IEC 61508 Part 2 \uae30\ubc18 \uc548\uc804\uad00\ub828 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc815\ub9ac – \ub2e8\uc77c \ud504\ub808\uc784<\/title>\n <style>\n :root {\n --navy: #1c385c;\n --navy-2: #294f7d;\n --blue: #e6edf5;\n --blue-2: #f2f6fa;\n --ink: #222831;\n --muted: #5e6773;\n --line: #d7dee7;\n --paper: #ffffff;\n --bg: #f4f6f8;\n --accent: #b56a18;\n --shadow: 0 8px 24px rgba(25, 45, 72, 0.08);\n --radius: 14px;\n }\n\n * { box-sizing: border-box; }\n html { scroll-behavior: smooth; }\n body {\n margin: 0;\n color: var(--ink);\n background: var(--bg);\n font-family: \"Noto Sans KR\", \"Apple SD Gothic Neo\", \"Malgun Gothic\", Arial, sans-serif;\n line-height: 1.75;\n word-break: keep-all;\n overflow-x: hidden;\n }\n a { color: var(--navy-2); }\n .page {\n width: 100%;\n max-width: 1600px;\n margin: 0 auto;\n padding: 28px 32px 72px;\n }\n .hero {\n position: relative;\n overflow: hidden;\n color: #fff;\n background: linear-gradient(135deg, #182f4d 0%, #244d7d 72%, #315f94 100%);\n border-radius: 20px;\n padding: 48px 52px;\n box-shadow: var(--shadow);\n }\n .hero::after {\n content: \"\";\n position: absolute;\n right: -120px;\n top: -120px;\n width: 340px;\n height: 340px;\n border-radius: 50%;\n background: rgba(255, 255, 255, 0.07);\n }\n .eyebrow {\n margin: 0 0 10px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n color: #cddcf0;\n font-size: 0.88rem;\n }\n h1 {\n margin: 0;\n max-width: 850px;\n font-size: clamp(2rem, 4vw, 3.2rem);\n line-height: 1.25;\n letter-spacing: -0.035em;\n }\n .subtitle {\n margin: 18px 0 0;\n color: #e7eef7;\n font-size: 1.05rem;\n }\n .hero-actions { margin-top: 26px; display: flex; gap: 10px; flex-wrap: wrap; }\n .button {\n appearance: none;\n border: 1px solid rgba(255,255,255,.36);\n border-radius: 999px;\n background: rgba(255,255,255,.12);\n color: #fff;\n padding: 10px 16px;\n font: inherit;\n font-weight: 700;\n cursor: pointer;\n text-decoration: none;\n }\n .button:hover { background: rgba(255,255,255,.2); }\n\n .summary {\n margin: 22px 0 26px;\n padding: 22px 24px;\n background: var(--paper);\n border: 1px solid var(--line);\n border-left: 5px solid var(--navy);\n border-radius: var(--radius);\n box-shadow: var(--shadow);\n font-size: 1.02rem;\n }\n\n .layout {\n display: block;\n width: 100%;\n }\n .toc {\n position: static;\n width: 100%;\n margin: 0 0 26px;\n background: var(--paper);\n border: 1px solid var(--line);\n border-radius: var(--radius);\n box-shadow: var(--shadow);\n padding: 20px 24px;\n }\n .toc h2 {\n margin: 0 0 10px;\n font-size: 1rem;\n color: var(--navy);\n }\n .toc ol {\n margin: 0;\n padding-left: 1.3rem;\n display: grid;\n grid-template-columns: repeat(4, minmax(0, 1fr));\n gap: 8px 24px;\n }\n .toc li { margin: 2px 0; font-size: 0.96rem; }\n .toc a { color: var(--ink); text-decoration: none; }\n .toc a:hover { color: var(--navy-2); text-decoration: underline; }\n\n main {\n width: 100%;\n min-width: 0;\n background: var(--paper);\n border: 1px solid var(--line);\n border-radius: var(--radius);\n box-shadow: var(--shadow);\n padding: 34px clamp(22px, 4vw, 48px) 52px;\n }\n section { scroll-margin-top: 18px; }\n h2.section-title {\n margin: 0 0 24px;\n padding-bottom: 12px;\n color: var(--navy);\n border-bottom: 2px solid var(--navy);\n font-size: 1.8rem;\n letter-spacing: -0.025em;\n }\n h3 {\n margin: 34px 0 14px;\n color: var(--navy-2);\n font-size: 1.28rem;\n letter-spacing: -0.02em;\n }\n p { margin: 0 0 14px; }\n\n .table-wrap {\n overflow-x: auto;\n margin: 14px 0 24px;\n border: 1px solid var(--line);\n border-radius: 12px;\n }\n table {\n width: 100%;\n border-collapse: collapse;\n min-width: 0;\n background: #fff;\n }\n th, td {\n padding: 12px 14px;\n border-bottom: 1px solid var(--line);\n vertical-align: top;\n text-align: left;\n }\n thead th {\n background: var(--navy);\n color: #fff;\n font-weight: 700;\n }\n tbody tr:last-child td { border-bottom: 0; }\n tbody tr:nth-child(even) { background: #fafbfd; }\n td:first-child { font-weight: 700; color: #243d5b; }\n\n .keybox, .note {\n margin: 22px 0;\n padding: 20px 22px;\n border-radius: 12px;\n }\n .keybox {\n background: var(--blue);\n border: 1px solid #9fb6cf;\n border-left: 5px solid var(--navy);\n }\n .keybox h4 { margin: 0 0 8px; color: var(--navy); font-size: 1.05rem; }\n .note { background: #f7f8fa; border: 1px solid var(--line); }\n ul, ol { padding-left: 1.4rem; }\n li { margin: 5px 0; }\n\n .flow {\n display: grid;\n grid-template-columns: repeat(4, minmax(130px, 1fr));\n gap: 18px 30px;\n margin: 24px 0 30px;\n counter-reset: flow;\n }\n .flow .node {\n position: relative;\n min-height: 92px;\n display: flex;\n align-items: center;\n justify-content: center;\n text-align: center;\n padding: 14px;\n background: var(--blue);\n border: 2px solid var(--navy);\n border-radius: 12px;\n font-weight: 700;\n color: #183553;\n }\n .flow .node:not(:nth-child(4n))::after {\n content: \"\u2192\";\n position: absolute;\n right: -25px;\n color: var(--muted);\n font-size: 1.35rem;\n }\n .flow .node:nth-child(5)::before {\n content: \"\u2193\";\n position: absolute;\n top: -29px;\n left: 50%;\n transform: translateX(-50%);\n color: var(--muted);\n font-size: 1.35rem;\n }\n .formula {\n margin: 22px auto;\n max-width: 780px;\n text-align: center;\n padding: 18px 20px;\n background: #fffaf3;\n border: 1px solid #e0c39c;\n border-radius: 12px;\n font-family: \"Times New Roman\", serif;\n font-size: 1.2rem;\n font-weight: 700;\n }\n\n .timeline {\n position: relative;\n margin: 10px 0 0;\n padding-left: 34px;\n }\n .timeline::before {\n content: \"\";\n position: absolute;\n left: 12px;\n top: 6px;\n bottom: 8px;\n width: 3px;\n background: #bdcadd;\n border-radius: 2px;\n }\n .step {\n position: relative;\n margin: 0 0 24px;\n padding: 18px 20px;\n background: var(--blue-2);\n border: 1px solid var(--line);\n border-radius: 12px;\n }\n .step::before {\n content: attr(data-step);\n position: absolute;\n left: -35px;\n top: 20px;\n width: 26px;\n height: 26px;\n display: grid;\n place-items: center;\n border-radius: 50%;\n color: #fff;\n background: var(--navy);\n font-size: 0.8rem;\n font-weight: 800;\n border: 3px solid #fff;\n box-shadow: 0 0 0 1px var(--navy);\n }\n .step h3 { margin: 0 0 8px; font-size: 1.18rem; }\n .step p:last-child { margin-bottom: 0; }\n\n .reference {\n margin-top: 44px;\n padding-top: 20px;\n border-top: 2px solid var(--line);\n color: var(--muted);\n font-size: 0.92rem;\n }\n footer {\n max-width: 1240px;\n margin: 20px auto 0;\n padding: 0 24px 48px;\n color: var(--muted);\n text-align: center;\n font-size: 0.86rem;\n }\n\n @media (max-width: 940px) {\n .toc ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }\n .flow { grid-template-columns: repeat(2, minmax(140px, 1fr)); }\n .flow .node::after, .flow .node::before { display: none; }\n }\n @media (max-width: 600px) {\n .page { padding: 14px 10px 40px; }\n .hero { padding: 34px 24px; border-radius: 14px; }\n main { padding: 26px 17px 38px; }\n .toc ol { grid-template-columns: 1fr; }\n .flow { grid-template-columns: 1fr; }\n .timeline { padding-left: 30px; }\n .step::before { left: -32px; }\n }\n\n @media print {\n @page { size: A4; margin: 16mm; }\n body { background: #fff; font-size: 10.5pt; }\n .page { max-width: none; padding: 0; }\n .hero { color: #000; background: #fff; border: 1px solid #777; box-shadow: none; padding: 20px; }\n .hero::after, .hero-actions, .toc, footer { display: none !important; }\n .subtitle, .eyebrow { color: #333; }\n .summary, main { box-shadow: none; }\n .layout { display: block; }\n .toc { display: none !important; }\n main { border: 0; padding: 0; }\n h2.section-title { break-before: page; }\n main > section:first-child h2.section-title { break-before: auto; }\n .table-wrap { overflow: visible; break-inside: avoid; }\n table { min-width: 0; font-size: 8.8pt; }\n th, td { padding: 6px 7px; }\n .step, .keybox, .note, .formula { break-inside: avoid; }\n a { color: inherit; text-decoration: none; }\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"page\">\n <header class=\"hero\">\n <p class=\"eyebrow\">Functional Safety Study Note<\/p>\n <h1>IEC 61508 Part 2 \uae30\ubc18<br>\uc548\uc804\uad00\ub828 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc815\ub9ac<\/h1>\n <p class=\"subtitle\"><em>The Safety Critical Systems Handbook<\/em>, Chapter 3 \ud559\uc2b5 \ub178\ud2b8<\/p>\n <div class=\"hero-actions\">\n <a class=\"button\" href=\"#keywords\">\ubcf8\ubb38 \uc2dc\uc791<\/a>\n <button class=\"button\" type=\"button\" onclick=\"window.print()\">\uc778\uc1c4 \/ PDF \uc800\uc7a5<\/button>\n <\/div>\n <\/header>\n\n <div class=\"summary\">\n Chapter 3\uc740 IEC 61508 Part 2\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \uc124\uba85\ud55c\ub2e4. \ub300\uc0c1\uc740 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc758 \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc124\uacc4\uc774\ub2e4. \ud575\uc2ec\uc740 \ubaa9\ud45c SIL\uc744 \ub9cc\uc871\ud558\ub294 \uc124\uacc4\ub97c \uc218\ud589\ud558\uace0, \uadf8 \uacb0\uacfc\ub97c \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, \uac80\ud1a0\uae30\ub85d \ubc0f \uc6b4\uc804\uae30\ub85d\uc73c\ub85c \uc785\uc99d\ud558\ub294 \uac83\uc774\ub2e4.\n <\/div>\n\n <div class=\"layout\">\n <nav class=\"toc\" aria-label=\"\ubaa9\ucc28\">\n <h2>\ubaa9\ucc28<\/h2>\n <ol>\n <li><a href=\"#keywords\">\ud0a4\uc6cc\ub4dc \uc815\uc758<\/a><\/li>\n <li><a href=\"#relationships\">\ud0a4\uc6cc\ub4dc \uac04 \uad00\uacc4<\/a><\/li>\n <li><a href=\"#flow-explanation\">\ud750\ub984\uc5d0 \ub9de\ucd98 \uc124\uba85<\/a><\/li>\n <li><a href=\"#references\">\ucc38\uace0\ubb38\ud5cc<\/a><\/li>\n <\/ol>\n <\/nav>\n\n <main>\n <section id=\"keywords\">\n <h2 class=\"section-title\">1. \ud0a4\uc6cc\ub4dc \uc815\uc758<\/h2>\n\n <h3>1.1 \uc801\uc6a9 \ubc94\uc704\uc640 \uae30\ubcf8 \uac1c\ub150<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>IEC 61508 Part 2<\/td><td>\uc548\uc804\uad00\ub828 \uc804\uae30\u00b7\uc804\uc790\u00b7\ud504\ub85c\uadf8\ub7a8 \uac00\ub2a5 \uc804\uc790 \uc2dc\uc2a4\ud15c\uc758 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc694\uad6c\uc0ac\ud56d\uc744 \ub2e4\ub8ec\ub2e4. \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c \uc694\uad6c\uc0ac\ud56d\uc740 Part 3\uc5d0\uc11c \ub2e4\ub8ec\ub2e4.<\/td><\/tr>\n <tr><td>E\/E\/PE \uc2dc\uc2a4\ud15c<\/td><td>Electrical, Electronic, Programmable Electronic System\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc804\uae30, \uc804\uc790 \ub610\ub294 \ud504\ub85c\uadf8\ub7a8 \uac00\ub2a5 \uc804\uc790\uae30\uc220\uc744 \uc774\uc6a9\ud558\uc5ec \uc548\uc804\uae30\ub2a5\uc744 \uc218\ud589\ud558\ub294 \uc2dc\uc2a4\ud15c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>EUC<\/td><td>Equipment Under Control\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uc2dc\uc2a4\ud15c\uc774 \uac10\uc2dc\ud558\uac70\ub098 \ubcf4\ud638\ud558\ub294 \ub300\uc0c1 \uc124\ube44\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc548\uc804\uae30\ub2a5<\/td><td>\ud2b9\uc815 \uc704\ud5d8\uacfc \uad00\ub828\ud558\uc5ec EUC\ub97c \uc548\uc804\uc0c1\ud0dc\ub85c \uc720\uc9c0\ud558\uac70\ub098 \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud558\ub294 \uae30\ub2a5\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc548\uc804\uc0c1\ud0dc<\/td><td>\uc704\ud5d8\uc774 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc218\uc900\uc73c\ub85c \uac10\uc18c\ub41c \uc124\ube44 \uc0c1\ud0dc\uc774\ub2e4. \uacf5\uc815 \uc815\uc9c0, \ubc38\ube0c \ucc28\ub2e8, \uc5d0\ub108\uc9c0 \ucc28\ub2e8 \ub4f1\uc774 \ud574\ub2f9\ud560 \uc218 \uc788\ub2e4.<\/td><\/tr>\n <tr><td>SIL<\/td><td>Safety Integrity Level\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uae30\ub2a5\uc5d0 \uc694\uad6c\ub418\ub294 \ubb34\uacb0\uc131 \uc218\uc900\uc774\ub2e4. SIL\uc774 \ub192\uc544\uc9c8\uc218\ub85d \uc124\uacc4, \ub3c5\ub9bd\uc131, \uac80\uc99d \ubc0f \ubb38\uc11c\ud654 \uc218\uc900\uc774 \uac15\ud654\ub41c\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>1.2 \uc0dd\uba85\uc8fc\uae30\uc640 \uc694\uad6c\uc0ac\ud56d<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\uc548\uc804 \uc0dd\uba85\uc8fc\uae30<\/td><td>\uc694\uad6c\uc0ac\ud56d \uc815\uc758, \uc124\uacc4, \uc81c\uc791, \uc124\uce58, \uc2dc\ud5d8, \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218, \ubcc0\uacbd \ubc0f \ud3d0\uae30\uae4c\uc9c0 \uc548\uc804\uc744 \uad00\ub9ac\ud558\ub294 \uc804\uccb4 \uc808\ucc28\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uae30\ub2a5\uc548\uc804\uad00\ub9ac<\/td><td>Functional Safety Management\uc758 \uc758\ubbf8\uc774\ub2e4. \uc5ed\ud560, \ucc45\uc784, \uc5ed\ub7c9, \ubb38\uc11c, \uac80\ud1a0, \uac10\uc0ac \ubc0f \ud615\uc0c1\uad00\ub9ac\ub97c \uccb4\uacc4\uc801\uc73c\ub85c \uc6b4\uc601\ud558\ub294 \uad00\ub9ac\uccb4\uacc4\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Quality and Safety Plan<\/td><td>\ud504\ub85c\uc81d\ud2b8\uc758 \uae30\ub2a5\uc548\uc804 \ubaa9\ud45c, \uc870\uc9c1, \ucc45\uc784, \ubb38\uc11c\uccb4\uacc4, \uac80\uc99d\uacc4\ud68d \ubc0f \ud655\uc778\uacc4\ud68d\uc744 \uc815\uc758\ud558\ub294 \ucd5c\uc0c1\uc704 \uacc4\ud68d\uc11c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>SRS<\/td><td>Safety Requirements Specification\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uae30\ub2a5, SIL, \uc751\ub2f5\uc2dc\uac04, \uc548\uc804\uc0c1\ud0dc, \uc6b4\uc804\ubaa8\ub4dc, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f \uc2dc\ud5d8\uc870\uac74\uc744 \uba85\ud655\ud558\uace0 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \ud615\ud0dc\ub85c \uc815\uc758\ud55c \ubb38\uc11c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\ucd94\uc801\uc131<\/td><td>\uc694\uad6c\uc0ac\ud56d\uc774 \uc124\uacc4, \uad6c\ud604, \uc2dc\ud5d8 \ubc0f \uacb0\uacfc\ubcf4\uace0\uc11c\uc640 \uc5f0\uacb0\ub418\ub294 \uc131\uc9c8\uc774\ub2e4. \uc694\uad6c\uc0ac\ud56d \ub204\ub77d\uacfc \ubbf8\uac80\uc99d \ud56d\ubaa9\uc744 \ubc29\uc9c0\ud55c\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>1.3 \uc124\uacc4\uc640 \ub3c5\ub9bd\uc131<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\uad6c\uc870\ud654 \uc124\uacc4<\/td><td>\uae30\ub2a5\uc744 \uba85\ud655\ud788 \ubd84\ud560\ud558\uace0 \uacc4\uce35\uacfc \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc2dd\ubcc4\ud560 \uc218 \uc788\ub3c4\ub85d \uc124\uacc4\ud558\ub294 \ubc29\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\ubaa8\ub4c8\ud654<\/td><td>\uc2dc\uc2a4\ud15c\uc744 \ub3c5\ub9bd\uc801\uc778 \uae30\ub2a5 \ub2e8\uc704\ub85c \ubd84\ub9ac\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \uacb0\ud568\uc758 \uc804\ud30c\ub97c \uc81c\ud55c\ud558\uace0 \uc2dc\ud5d8\uacfc \ubcc0\uacbd\uc744 \uc6a9\uc774\ud558\uac8c \ud55c\ub2e4.<\/td><\/tr>\n <tr><td>\ubd84\ub9ac<\/td><td>EUC, \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c, \uc548\uc804\uc2dc\uc2a4\ud15c \ubc0f \uc911\ubcf5 \ucc44\ub110 \uc0ac\uc774\uc758 \ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801\u00b7\ub370\uc774\ud130\uc801 \ub3c5\ub9bd\uc744 \ud655\ubcf4\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc911\ubcf5\uc131<\/td><td>\ub3d9\uc77c\ud55c \uc548\uc804\uae30\ub2a5\uc744 \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774 \uc218\ud589\ud558\ub3c4\ub85d \uad6c\uc131\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4. \ud558\ub098\uc758 \uace0\uc7a5\uc774 \uc804\uccb4 \uae30\ub2a5 \uc0c1\uc2e4\ub85c \uc774\uc5b4\uc9c0\ub294 \uac83\uc744 \ubc29\uc9c0\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>\ub2e4\uc591\uc131<\/td><td>\uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \uc124\uacc4 \ub610\ub294 \uad6c\ud604\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4. \ub3d9\uc77c \uc6d0\uc778\uc73c\ub85c \uc911\ubcf5 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud558\ub294 \uac83\uc744 \ubc29\uc9c0\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>CCF<\/td><td>Common Cause Failure\uc758 \uc57d\uc5b4\uc774\ub2e4. \uacf5\ud1b5\ub41c \uc6d0\uc778\uc73c\ub85c \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uace0\uc7a5 \ub098\ub294 \ud604\uc0c1\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc9c4\ub2e8\ubc94\uc704<\/td><td>Diagnostic Coverage\uc758 \uc758\ubbf8\uc774\ub2e4. \uc704\ud5d8\uace0\uc7a5 \uc911 \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Watchdog<\/td><td>CPU \uc815\uc9c0, \ud504\ub85c\uadf8\ub7a8 \uc21c\uc11c \uc774\uc0c1 \ub610\ub294 \uc2e4\ud589\uc2dc\uac04 \uc774\uc0c1\uc744 \uac10\uc2dc\ud558\ub294 \uae30\ubcf8 \uc9c4\ub2e8\uae30\ub2a5\uc774\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>1.4 \ud558\ub4dc\uc6e8\uc5b4 \uc548\uc804\ubb34\uacb0\uc131 \ud3c9\uac00<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5<\/td><td>\ubd80\ud488 \uc5f4\ud654\ub098 \ubb3c\ub9ac\uc801 \uc190\uc0c1\ucc98\ub7fc \uace0\uc7a5\ub960\ub85c \uc815\ub7c9\ud654\ud560 \uc218 \uc788\ub294 \uace0\uc7a5\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uccb4\uacc4\uc801 \uace0\uc7a5<\/td><td>\uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \uc81c\uc791, \ubcc0\uacbd \ub610\ub294 \uc6b4\uc804\uc808\ucc28\uc758 \uacb0\ud568\ucc98\ub7fc \ud2b9\uc815 \uc870\uac74\uc5d0\uc11c \ubc18\ubcf5\ub418\ub294 \uace0\uc7a5\uc774\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uace0\uc7a5\ub960\ub85c \uc9c1\uc811 \uc608\uce21\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/td><\/tr>\n <tr><td>SFF<\/td><td>Safe Failure Fraction\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uce21 \uace0\uc7a5\uacfc \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4.<\/td><\/tr>\n <tr><td>HFT<\/td><td>Hardware Fault Tolerance\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc2dc\uc2a4\ud15c\uc774 \uc548\uc804\uae30\ub2a5\uc744 \uc0c1\uc2e4\ud558\uc9c0 \uc54a\uace0 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \uac1c\uc218\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Type A \uc694\uc18c<\/td><td>\uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5 \uc2dc \ub3d9\uc791 \ubc0f \uace0\uc7a5\ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \uc54c\ub824\uc9c4 \ube44\uad50\uc801 \ub2e8\uc21c\ud55c \uc694\uc18c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Type B \uc694\uc18c<\/td><td>\ubcf5\uc7a1\ud55c \uc804\uc790\uc7a5\uce58\ucc98\ub7fc \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5 \uc2dc \ub3d9\uc791 \ub610\ub294 \uace0\uc7a5\ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \uc54c\ub824\uc9c0\uc9c0 \uc54a\uc740 \uc694\uc18c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>PFD<\/td><td>Probability of Failure on Demand\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc800\uc218\uc694 \uc548\uc804\uae30\ub2a5\uc774 \uc694\uad6c\ub420 \ub54c \uc2e4\ud328\ud560 \ud3c9\uade0 \ud655\ub960\uc774\ub2e4.<\/td><\/tr>\n <tr><td>PFH<\/td><td>Probability of dangerous Failure per Hour\uc758 \uc758\ubbf8\uc774\ub2e4. \uace0\uc218\uc694 \ub610\ub294 \uc5f0\uc18d\uc6b4\uc804 \uc548\uc804\uae30\ub2a5\uc758 \uc2dc\uac04\ub2f9 \uc704\ud5d8\uace0\uc7a5 \ube48\ub3c4\uc774\ub2e4.<\/td><\/tr>\n <tr><td>FMEA<\/td><td>Failure Mode and Effects Analysis\uc758 \uc57d\uc5b4\uc774\ub2e4. \ubd80\ud488\ubcc4 \uace0\uc7a5\ubaa8\ub4dc\uc640 \uc2dc\uc2a4\ud15c \uc601\ud5a5\uc744 \ubd84\uc11d\ud558\ub294 \uae30\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>FTA<\/td><td>Fault Tree Analysis\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc0c1\uc704 \uc704\ud5d8\uc0ac\uac74\uc758 \uc6d0\uc778\uc744 \ub17c\ub9ac\uc801\uc73c\ub85c \uc804\uac1c\ud558\ub294 \uae30\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Proof Test<\/td><td>\uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \ubc1c\uacac\ub418\uc9c0 \uc54a\ub294 \uc7a0\uc7ac \uc704\ud5d8\uace0\uc7a5\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \ud655\uc778\ud558\ub294 \uc2dc\ud5d8\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Route 1H<\/td><td>SFF\uc640 HFT\uc5d0 \ub530\ub978 \uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d\uc744 \uc801\uc6a9\ud558\uc5ec \ucd5c\ub300 SIL\uc744 \ud310\ub2e8\ud558\ub294 \ubc29\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Route 2H<\/td><td>\ucda9\ubd84\ud558\uace0 \uac80\uc99d\ub41c \ud604\uc7a5 \uace0\uc7a5\ub370\uc774\ud130\ub97c \uc774\uc6a9\ud558\uc5ec \ud558\ub4dc\uc6e8\uc5b4 \uc544\ud0a4\ud14d\ucc98 \uc801\ud569\uc131\uc744 \uc8fc\uc7a5\ud558\ub294 \ub300\uc548 \uacbd\ub85c\uc774\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>1.5 \uc2dc\ud5d8, \ud655\uc778 \ubc0f \uc99d\uac70<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>Verification<\/td><td>\uac01 \uc0dd\uba85\uc8fc\uae30 \ub2e8\uacc4\uc758 \uc0b0\ucd9c\ubb3c\uc774 \uc774\uc804 \ub2e8\uacc4\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \uc62c\ubc14\ub974\uac8c \ub9cc\uc871\ud558\ub294\uc9c0 \uac80\ud1a0\ud558\uace0 \uc2dc\ud5d8\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \u201c\uc124\uacc4\ub97c \uc62c\ubc14\ub974\uac8c \uad6c\ud604\ud588\ub294\uac00\u201d\ub97c \ud655\uc778\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>Validation<\/td><td>\uc644\uc131\ub41c \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc774 \uc2e4\uc81c \uc0ac\uc6a9\ud658\uacbd\uc5d0\uc11c \uc804\uccb4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 \ub9cc\uc871\ud558\ub294\uc9c0 \ud655\uc778\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \u201c\ud544\uc694\ud55c \uc548\uc804\uc2dc\uc2a4\ud15c\uc744 \ub9cc\ub4e4\uc5c8\ub294\uac00\u201d\ub97c \ud655\uc778\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>Safety Manual<\/td><td>\uc548\uc804\uad00\ub828 \uc7a5\uce58\uc758 \uae30\ub2a5, \uad6c\uc131, \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5\ub960, \uc9c4\ub2e8\ubc94\uc704, HFT, \uc0ac\uc6a9\uc81c\ud55c \ubc0f Proof Test \uc870\uac74\uc744 \uc81c\uacf5\ud558\ub294 \ubb38\uc11c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc601\ud5a5\ubd84\uc11d<\/td><td>\ubcc0\uacbd\uc774 \uc548\uc804\uae30\ub2a5, \uc778\ud130\ud398\uc774\uc2a4, \uc2dc\ud5d8\ubc94\uc704 \ubc0f \uae30\uc874 \uac80\uc99d\uacb0\uacfc\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5\uc744 \ud3c9\uac00\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Proven in Use<\/td><td>\uc720\uc0ac\ud55c \ud658\uacbd\uacfc \uc6a9\ub3c4\uc5d0\uc11c \ucd95\uc801\ub41c \ucda9\ubd84\ud55c \ud604\uc7a5 \uc6b4\uc804 \ubc0f \uace0\uc7a5\ub370\uc774\ud130\ub97c \uc774\uc6a9\ud558\uc5ec \uc801\ud569\uc131\uc744 \uc8fc\uc7a5\ud558\ub294 \ubc29\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc801\ud569\uc131 \uc785\uc99d<\/td><td>IEC 61508\uc758 \uac01 \uc694\uad6c\uc0ac\ud56d\uacfc \uc774\ub97c \ucda9\uc871\ud558\ub294 \uc0ac\uc591\uc11c, \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, \uac80\ud1a0\uc11c \ubc0f \uc6b4\uc804\uae30\ub85d\uc744 \uc5f0\uacb0\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n <\/section>\n\n <section id=\"relationships\">\n <h2 class=\"section-title\">2. \ud0a4\uc6cc\ub4dc \uac04 \uad00\uacc4 \uc815\ub9ac<\/h2>\n\n <h3>2.1 \uc804\uccb4 \uad00\uacc4<\/h3>\n <div class=\"flow\" aria-label=\"\uae30\ub2a5\uc548\uc804 \ud750\ub984\ub3c4\">\n <div class=\"node\">\uc704\ud5d8\ubd84\uc11d<br>\ubc0f SIL \ubaa9\ud45c<\/div>\n <div class=\"node\">SRS<br>\uc548\uc804\uae30\ub2a5 \uc815\uc758<\/div>\n <div class=\"node\">\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654<br>\ubd84\ub9ac\u00b7\ub2e4\uc591\uc131<\/div>\n <div class=\"node\">SFF\u00b7HFT<br>\uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d<\/div>\n <div class=\"node\">PFD\u00b7PFH<br>\uc815\ub7c9\ud3c9\uac00<\/div>\n <div class=\"node\">\ud1b5\ud569\uc2dc\ud5d8<br>Verification<\/div>\n <div class=\"node\">Validation<br>\uc694\uad6c\uc0ac\ud56d \uc885\ud569\ud655\uc778<\/div>\n <div class=\"node\">\uc6b4\uc804\u00b7\uc815\ube44<br>Proof Test\u00b7\uc99d\uac70<\/div>\n <\/div>\n\n <div class=\"keybox\">\n <h4>\uad00\uacc4\uc758 \ud575\uc2ec<\/h4>\n <ul>\n <li>SIL\uc740 \ucd9c\ubc1c\uc810\uc774\ub2e4. SIL\uc740 \uc548\uc804\uae30\ub2a5\ubcc4 \uc694\uad6c\uc218\uc900\uc744 \uacb0\uc815\ud55c\ub2e4.<\/li>\n <li>SRS\ub294 SIL\uc744 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \uc694\uad6c\uc0ac\ud56d\uc73c\ub85c \ubcc0\ud658\ud55c\ub2e4.<\/li>\n <li>\uc124\uacc4\uae30\ubc95\uc740 \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uc904\uc778\ub2e4.<\/li>\n <li>SFF\uc640 HFT\ub294 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \ud558\ub4dc\uc6e8\uc5b4 \uad6c\uc870\ub97c \uc81c\ud55c\ud55c\ub2e4.<\/li>\n <li>PFD \ub610\ub294 PFH\ub294 \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\ub7c9 \ubaa9\ud45c \ub2ec\uc131 \uc5ec\ubd80\ub97c \ud310\ub2e8\ud55c\ub2e4.<\/li>\n <li>Verification\uacfc Validation\uc740 \uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc744 \uc2dc\ud5d8\uacfc \uae30\ub85d\uc73c\ub85c \ud655\uc778\ud55c\ub2e4.<\/li>\n <li>\uc6b4\uc804\u00b7\uc815\ube44\uc640 \ubcc0\uacbd\uad00\ub9ac\ub294 \ub2ec\uc131\ub41c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc218\uba85\uc8fc\uae30 \ub3d9\uc548 \uc720\uc9c0\ud55c\ub2e4.<\/li>\n <\/ul>\n <\/div>\n\n <h3>2.2 \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc758 \uad00\uacc4<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\uad6c\ubd84<\/th><th>\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5<\/th><th>\uccb4\uacc4\uc801 \uace0\uc7a5<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\ubc1c\uc0dd \uc6d0\uc778<\/td><td>\ubd80\ud488 \uc5f4\ud654, \ubb3c\ub9ac\uc801 \uc190\uc0c1, \uc6b0\ubc1c\uc801 \uace0\uc7a5<\/td><td>\uc694\uad6c\uc0ac\ud56d \uc624\ub958, \uc124\uacc4 \uacb0\ud568, \uc81c\uc791 \uc624\ub958, \ubcc0\uacbd \uc624\ub958, \uc6b4\uc804\uc808\ucc28 \uc624\ub958<\/td><\/tr>\n <tr><td>\ud3c9\uac00 \ubc29\ubc95<\/td><td>\uace0\uc7a5\ub960, PFD, PFH, \uc2e0\ub8b0\ub3c4 \ubaa8\ub378, FMEA, FTA<\/td><td>\uc0dd\uba85\uc8fc\uae30 \uad00\ub9ac, \uc124\uacc4\ud45c\uc900, \ub3c5\ub9bd\uac80\ud1a0, \uc2dc\ud5d8, \ud615\uc0c1\uad00\ub9ac, \uc5ed\ub7c9\uad00\ub9ac<\/td><\/tr>\n <tr><td>\uc8fc\uc694 \ud0a4\uc6cc\ub4dc<\/td><td>SFF, HFT, \uc9c4\ub2e8\ubc94\uc704, Proof Test, CCF<\/td><td>SRS, \uad6c\uc870\ud654 \uc124\uacc4, \ubaa8\ub4c8\ud654, \ubd84\ub9ac, \ub2e4\uc591\uc131, Verification<\/td><\/tr>\n <tr><td>\ud310\uc815 \ubc29\uc2dd<\/td><td>\uc815\ub7c9\uc801 \ubaa9\ud45c\uc640 \ube44\uad50<\/td><td>SIL\uc5d0 \ub300\uc751\ud558\ub294 \uc808\ucc28\uc640 \uae30\ubc95\uc758 \uc5c4\uaca9\uc131\uc73c\ub85c \ud310\ub2e8<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n <div class=\"note\">\ubaa9\ud45c SIL \ub2ec\uc131\uc740 \ud558\ub098\uc758 \uacc4\uc0b0\uc73c\ub85c \uacb0\uc815\ub418\uc9c0 \uc54a\ub294\ub2e4. \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\ub7c9\ud3c9\uac00\uc640 \uccb4\uacc4\uc801 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\uc131\uc801 \ubc29\uc5b4\uac00 \ub3d9\uc2dc\uc5d0 \ud544\uc694\ud558\ub2e4.<\/div>\n\n <h3>2.3 SFF, HFT, PFD\/PFH\uc758 \uad00\uacc4<\/h3>\n <ol>\n <li><strong>SFF<\/strong>\ub294 \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uce21 \uace0\uc7a5\uacfc \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc744 \ub098\ud0c0\ub0b8\ub2e4.<\/li>\n <li><strong>HFT<\/strong>\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc744 \uba87 \uac1c\uae4c\uc9c0 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b8\ub2e4.<\/li>\n <li><strong>SFF\uc640 HFT<\/strong>\ub294 \ud574\ub2f9 \uad6c\uc870\uc5d0\uc11c \uc8fc\uc7a5\ud560 \uc218 \uc788\ub294 \ucd5c\ub300 SIL\uc744 \uc81c\ud55c\ud55c\ub2e4.<\/li>\n <li><strong>PFD \ub610\ub294 PFH<\/strong>\ub294 \uc120\ud0dd\ud55c \uad6c\uc870\uc758 \uc2e4\uc81c \uc704\ud5d8\uace0\uc7a5 \ud655\ub960 \ub610\ub294 \ube48\ub3c4\ub97c \uacc4\uc0b0\ud55c\ub2e4.<\/li>\n <li>\uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d\uc744 \ub9cc\uc871\ud558\ub354\ub77c\ub3c4 PFD\/PFH \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\uc9c0 \ubabb\ud558\uba74 \uc124\uacc4\ub294 \ubd80\uc801\ud569\ud558\ub2e4.<\/li>\n <li>PFD\/PFH \uacc4\uc0b0\uac12\uc774 \ucda9\ubd84\ud788 \ub0ae\ub354\ub77c\ub3c4 SFF\/HFT \uc81c\uc57d\uc744 \ucda9\uc871\ud558\uc9c0 \ubabb\ud558\uba74 \ud574\ub2f9 SIL\uc744 \uc8fc\uc7a5\ud560 \uc218 \uc5c6\ub2e4.<\/li>\n <\/ol>\n <div class=\"formula\">SIL \uc801\ud569\uc131 = \uc544\ud0a4\ud14d\ucc98 \uc801\ud569\uc131(SFF\/HFT) + \uc815\ub7c9 \uc801\ud569\uc131(PFD\/PFH) + \uccb4\uacc4\uc801 \uace0\uc7a5 \ubc29\uc5b4<\/div>\n\n <h3>2.4 \uc911\ubcf5\uc131, \ub2e4\uc591\uc131, \ubd84\ub9ac \ubc0f CCF\uc758 \uad00\uacc4<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\uad00\uacc4<\/th><th>\uc124\uba85<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\uc911\ubcf5\uc131 \u2192 HFT \uc99d\uac00<\/td><td>\ud558\ub098\uc758 \ucc44\ub110\uc774 \uace0\uc7a5 \ub098\ub3c4 \ub2e4\ub978 \ucc44\ub110\uc774 \uc548\uc804\uae30\ub2a5\uc744 \uc720\uc9c0\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>\uc911\ubcf5\uc131 \u2260 CCF \uc81c\uac70<\/td><td>\ub3d9\uc77c \uc804\uc6d0, \ub3d9\uc77c \ud658\uacbd, \ub3d9\uc77c \uc124\uacc4 \uc624\ub958\uac00 \uc788\uc73c\uba74 \ubaa8\ub4e0 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4.<\/td><\/tr>\n <tr><td>\ub2e4\uc591\uc131 \u2192 CCF \uac10\uc18c<\/td><td>\uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \ubd80\ud488 \ub610\ub294 \ub17c\ub9ac\ub97c \uc801\uc6a9\ud558\uc5ec \ub3d9\uc77c \uc6d0\uc778\uc5d0 \uc758\ud55c \ub3d9\uc2dc\uace0\uc7a5\uc744 \uc904\uc778\ub2e4.<\/td><\/tr>\n <tr><td>\ubd84\ub9ac \u2192 \ub3c5\ub9bd\uc131 \uc99d\uac00<\/td><td>\ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801\u00b7\ub370\uc774\ud130\uc801 \uac04\uc12d\uacfc \uace0\uc7a5\uc804\ud30c\ub97c \uc81c\ud55c\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>\uc9c4\ub2e8 \u2192 SFF \uc99d\uac00<\/td><td>\uc704\ud5d8\uace0\uc7a5\uc744 \uc790\ub3d9\uc73c\ub85c \uac80\ucd9c\ud558\uc5ec \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud560 \uc218 \uc788\ub2e4.<\/td><\/tr>\n <tr><td>Proof Test \u2192 \uc7a0\uc7ac\uace0\uc7a5 \uac10\uc18c<\/td><td>\uc790\ub3d9\uc9c4\ub2e8\uc774 \uac80\ucd9c\ud558\uc9c0 \ubabb\ud55c \uc704\ud5d8\uace0\uc7a5\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \ubc1c\uacac\ud55c\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>2.5 Verification\uacfc Validation\uc758 \uad00\uacc4<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\uad6c\ubd84<\/th><th>Verification<\/th><th>Validation<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\ud575\uc2ec \uc9c8\ubb38<\/td><td>\uc124\uacc4\ub97c \uc694\uad6c\uc0ac\ud56d\ub300\ub85c \uc62c\ubc14\ub974\uac8c \uad6c\ud604\ud588\ub294\uac00?<\/td><td>\uc644\uc131\ub41c \uc2dc\uc2a4\ud15c\uc774 \uc2e4\uc81c \uc548\uc804\uc694\uad6c\ub97c \ucda9\uc871\ud558\ub294\uac00?<\/td><\/tr>\n <tr><td>\ub300\uc0c1<\/td><td>\ub2e8\uacc4\ubcc4 \uc0ac\uc591\uc11c, \uc124\uacc4\uc11c, \ubaa8\ub4c8, \uc778\ud130\ud398\uc774\uc2a4, \ud1b5\ud569 \uacb0\uacfc<\/td><td>\uc804\uccb4 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uacfc \uc2e4\uc81c \uc6b4\uc804\uc870\uac74<\/td><\/tr>\n <tr><td>\uc8fc\uc694 \ubc29\ubc95<\/td><td>\uac80\ud1a0, \uc785\ub825\ubd84\ud560, \uacbd\uacc4\uac12\uc2dc\ud5d8, \ube44\uc815\uc0c1 \uc785\ub825\uc2dc\ud5d8, \ub17c\ub9ac\uc870\ud569\uc2dc\ud5d8<\/td><td>\uae30\ub2a5\uc2dc\ud5d8, \ud658\uacbd\uc2dc\ud5d8, \uac04\uc12d\uc2dc\ud5d8, \uace0\uc7a5\uc0bd\uc785, \uc885\ud569 \uc778\uc218\uc2dc\ud5d8<\/td><\/tr>\n <tr><td>\uacb0\uacfc<\/td><td>\ub2e8\uacc4\ubcc4 \uac80\uc99d\uae30\ub85d\uacfc \uacb0\ud568\uc870\uce58 \uae30\ub85d<\/td><td>\uc804\uccb4 \uc694\uad6c\uc0ac\ud56d \ucd94\uc801\ud45c\uc640 \uc885\ud569 \ud655\uc778\ubcf4\uace0\uc11c<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n <\/section>\n\n <section id=\"flow-explanation\">\n <h2 class=\"section-title\">3. \ud750\ub984\uc5d0 \ub9de\ucd98 \uc124\uba85<\/h2>\n <div class=\"timeline\">\n <article class=\"step\" data-step=\"1\"><h3>\uae30\ub2a5\uc548\uc804\uad00\ub9ac\uccb4\uacc4\ub97c \uc218\ub9bd\ud55c\ub2e4<\/h3><p>\ud504\ub85c\uc81d\ud2b8\ub97c \uc2dc\uc791\ud560 \ub54c \uc5ed\ud560, \ucc45\uc784, \uc5ed\ub7c9 \ubc0f \ub3c5\ub9bd\uc131\uc744 \uc815\ud55c\ub2e4. Quality and Safety Plan\uc744 \uc791\uc131\ud55c\ub2e4. \uc774 \uacc4\ud68d\uc5d0\ub294 \ubb38\uc11c\uccb4\uacc4, \uac80\ud1a0\ubc29\ubc95, \uc2dc\ud5d8\uc804\ub7b5, \ud615\uc0c1\uad00\ub9ac, Validation \uacc4\ud68d \ubc0f \uae30\ub2a5\uc548\uc804\uac10\uc0ac \uacc4\ud68d\uc774 \ud3ec\ud568\ub418\uc5b4\uc57c \ud55c\ub2e4. \ubaa8\ub4e0 \ud65c\ub3d9\uc740 \uae30\ub85d\ub418\uc5b4\uc57c \ud55c\ub2e4. \uae30\ub85d\uc774 \uc5c6\uc73c\uba74 \ud45c\uc900 \uc900\uc218 \uc5ec\ubd80\ub97c \ud3c9\uac00\ud560 \uc218 \uc5c6\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"2\"><h3>\uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 SRS\ub85c \uc815\uc758\ud55c\ub2e4<\/h3><p>\uc704\ud5d8\ubd84\uc11d \uacb0\uacfc\ub97c \ubc14\ud0d5\uc73c\ub85c \uc548\uc804\uae30\ub2a5\ubcc4 SIL\uc744 \uc815\ud55c\ub2e4. \uac01 \uc548\uc804\uae30\ub2a5\uc758 \uc800\uc218\uc694 \ub610\ub294 \uace0\uc218\uc694 \ubaa8\ub4dc\ub97c \uad6c\ubd84\ud55c\ub2e4. \uc751\ub2f5\uc2dc\uac04, \uc548\uc804\uc0c1\ud0dc, Trip \uc124\uc815\uac12, Reset \uc870\uac74, \uc804\uc6d0\uc0c1\uc2e4 \uc2dc \ub3d9\uc791, \uc6b4\uc804\ubaa8\ub4dc, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f Proof Test \uc694\uad6c\uc0ac\ud56d\uc744 \uc815\uc758\ud55c\ub2e4. \uc694\uad6c\uc0ac\ud56d\uc740 \uba85\ud655\ud558\uace0 \ubaa8\ud638\ud558\uc9c0 \uc54a\uc73c\uba70 \uc2dc\ud5d8 \uac00\ub2a5\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"3\"><h3>EUC\uc640 \uc548\uc804\uc2dc\uc2a4\ud15c\uc758 \uacbd\uacc4\ub97c \uc815\ud55c\ub2e4<\/h3><p>\uc77c\ubc18 \uc81c\uc5b4\uae30\ub2a5\uacfc \uc548\uc804\uae30\ub2a5\uc758 \uacbd\uacc4\ub97c \uc815\uc758\ud55c\ub2e4. \ub450 \uc2dc\uc2a4\ud15c \uc0ac\uc774\uc758 \uc804\uae30 \ubc0f \ub370\uc774\ud130 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uba85\ud655\ud788 \ud55c\ub2e4. \ud544\uc694\ud55c \uacbd\uc6b0 \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd84\ub9ac\ud55c\ub2e4. \ub3c5\ub9bd\uc131\uc744 \uc785\uc99d\ud560 \uc218 \uc5c6\ub2e4\uba74 \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc744 \ud3ec\ud568\ud55c \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc744 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc73c\ub85c \ucde8\uae09\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"4\"><h3>\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\ub41c \uc124\uacc4\ub97c \uc218\ud589\ud55c\ub2e4<\/h3><p>\uac80\uc99d\ub41c \ubd80\ud488\uacfc \uc124\uacc4\ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uae30\ub2a5\uc744 \ubaa8\ub4c8\ub85c \ubd84\ub9ac\ud55c\ub2e4. \uc548\uc804\uad00\ub828 \uc694\uc18c\uc640 \ube44\uc548\uc804\uad00\ub828 \uc694\uc18c\uc758 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc81c\ud55c\ud55c\ub2e4. \uace0\uc7a5\uc744 \uac80\ucd9c\ud558\uba74 \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud558\ub3c4\ub85d \uc124\uacc4\ud55c\ub2e4. \uc628\ub3c4, \uc9c4\ub3d9, EMC \ubc0f \uc804\uc6d0 \uc774\uc0c1\uc744 \uace0\ub824\ud55c\ub2e4. \uc628\ub77c\uc778 \ubcc0\uacbd\uc744 \uc81c\ud55c\ud558\uace0 \uc6b4\uc804\uc790 \uc624\uc870\uc791\uc744 \ubc29\uc9c0\ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"5\"><h3>\uc9c4\ub2e8\uacfc \uace0\uc7a5\ud5c8\uc6a9 \uad6c\uc870\ub97c \uacb0\uc815\ud55c\ub2e4<\/h3><p>\ubaa9\ud45c SIL\uc5d0 \ub530\ub77c Watchdog, \uba54\ubaa8\ub9ac \uac80\uc0ac, I\/O \uc9c4\ub2e8, \uc13c\uc11c \ubc0f \uc561\ucd94\uc5d0\uc774\ud130 \uc9c4\ub2e8\uc744 \uc124\uacc4\ud55c\ub2e4. \uc911\ubcf5\uad6c\uc870\ub97c \uc801\uc6a9\ud560 \uacbd\uc6b0 HFT\uac00 \uc99d\uac00\ud55c\ub2e4. \uadf8\ub7ec\ub098 \ub3d9\uc77c \uc6d0\uc778\uc5d0 \uc758\ud55c \ub3d9\uc2dc\uace0\uc7a5\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ucc44\ub110 \ubd84\ub9ac, \uc804\uc6d0 \ubd84\ub9ac, \ubc30\uc120 \ubd84\ub9ac \ubc0f \ub2e4\uc591\uc131 \uc124\uacc4\ub97c \ud568\uaed8 \uc801\uc6a9\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"6\"><h3>SFF\uc640 HFT\ub85c \uc544\ud0a4\ud14d\ucc98\ub97c \uac80\ud1a0\ud55c\ub2e4<\/h3><p>\uac01 \uc694\uc18c\ub97c Type A \ub610\ub294 Type B\ub85c \ubd84\ub958\ud55c\ub2e4. FMEA \ub610\ub294 \uace0\uc7a5\uc2dc\ud5d8\uc744 \ud1b5\ud574 \uc548\uc804\uce21 \uace0\uc7a5, \uac80\ucd9c\ub41c \uc704\ud5d8\uace0\uc7a5 \ubc0f \ubbf8\uac80\ucd9c \uc704\ud5d8\uace0\uc7a5\uc744 \uad6c\ubd84\ud55c\ub2e4. \uc774\ub97c \uc774\uc6a9\ud558\uc5ec SFF\ub97c \uc0b0\uc815\ud55c\ub2e4. SFF\uc640 HFT \ud45c\ub97c \uc774\uc6a9\ud558\uc5ec \ud574\ub2f9 \uad6c\uc870\uac00 \ubaa9\ud45c SIL\uc744 \uc8fc\uc7a5\ud560 \uc218 \uc788\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4. \uc774\uac83\uc774 Route 1H\uc758 \uae30\ubcf8 \ud750\ub984\uc774\ub2e4.<\/p><p>\ucda9\ubd84\ud558\uace0 \uac80\uc99d\ub41c \ud604\uc7a5 \uace0\uc7a5\ub370\uc774\ud130\uac00 \uc788\ub2e4\uba74 Route 2H\ub97c \uac80\ud1a0\ud560 \uc218 \uc788\ub2e4. \uc774\ub54c \uc81c\uc870\uc0ac \ubcf4\uc99d\ubc18\ud488 \uc790\ub8cc\uac00 \uc544\ub2c8\ub77c \uc2e4\uc81c \uc6b4\uc804\ud658\uacbd\uc5d0\uc11c \uc218\uc9d1\ud55c \ud604\uc7a5\ub370\uc774\ud130\uac00 \ud544\uc694\ud558\ub2e4. \ub370\uc774\ud130\uc758 \uc801\uc6a9\ud658\uacbd, \uace0\uc7a5\ubd84\ub958 \ubc0f \ud1b5\uacc4\uc801 \uc2e0\ub8b0\uc218\uc900\uc744 \uc785\uc99d\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"7\"><h3>PFD \ub610\ub294 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4<\/h3><p>\uc2e0\ub8b0\ub3c4 \ubaa8\ub378\uc744 \uc791\uc131\ud55c\ub2e4. \uc13c\uc11c, \ub85c\uc9c1\uc194\ubc84 \ubc0f \ucd5c\uc885\uc694\uc18c\uc758 \uc704\ud5d8\uace0\uc7a5\ub960\uc744 \ubc18\uc601\ud55c\ub2e4. \uc9c4\ub2e8\uc8fc\uae30, Proof Test \uc8fc\uae30, \uc218\ub9ac\uc2dc\uac04, \uc9c4\ub2e8\ubc94\uc704 \ubc0f CCF\ub97c \ud3ec\ud568\ud55c\ub2e4. \uc800\uc218\uc694 \uae30\ub2a5\uc740 PFD\ub97c \uacc4\uc0b0\ud558\uace0 \uace0\uc218\uc694 \ub610\ub294 \uc5f0\uc18d\uc6b4\uc804 \uae30\ub2a5\uc740 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4. \uacc4\uc0b0\uacb0\uacfc\ub294 SIL \ubc94\uc704\ubfd0 \uc544\ub2c8\ub77c \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \uc124\uc815\ud55c \uac1c\ubcc4 \uc815\ub7c9\ubaa9\ud45c\uc640 \ube44\uad50\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"8\"><h3>\ud1b5\ud569\uc2dc\ud5d8\uacfc Verification\uc744 \uc218\ud589\ud55c\ub2e4<\/h3><p>\uc785\ub825 \uc870\ud569\uc5d0 \ub530\ub978 \ucd9c\ub825\uc751\ub2f5\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \uc785\ub825 \uc601\uc5ed\uc744 \ubd84\ud560\ud558\uace0 \uacbd\uacc4\uac12\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \ube44\uc815\uc0c1 \uc785\ub825\uacfc \uba85\uc138\ub418\uc9c0 \uc54a\uc740 \uc785\ub825\uc5d0 \ub300\ud55c \ub3d9\uc791\ub3c4 \ud655\uc778\ud55c\ub2e4. \ub192\uc740 SIL\uc5d0\uc11c\ub294 \uc6b4\uc804 \uacbd\uacc4\uc5d0\uc11c \uc5ec\ub7ec \uc911\uc694 \ub17c\ub9ac\uac00 \ub3d9\uc2dc\uc5d0 \uc791\ub3d9\ud558\ub294 \uc870\uac74\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \uc2dc\ud5d8\ubc84\uc804, \uc2dc\ud5d8\ub3c4\uad6c, \ud569\uaca9\uae30\uc900, \uacb0\uacfc \ubc0f \ubd88\uc77c\uce58 \uc0ac\ud56d\uc744 \uae30\ub85d\ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"9\"><h3>Validation\uc73c\ub85c \uc804\uccb4 \uc694\uad6c\uc0ac\ud56d\uc744 \ud655\uc778\ud55c\ub2e4<\/h3><p>SRS\uc758 \uac01 \uc694\uad6c\uc0ac\ud56d\uc744 \uacc4\uc0b0\uc11c, \uac80\ud1a0\uc11c \ubc0f \uc2dc\ud5d8\uc131\uc801\uc11c\uc640 \uc5f0\uacb0\ud55c\ub2e4. \uae30\ub2a5\uc2dc\ud5d8, \ud658\uacbd\uc2dc\ud5d8, \uac04\uc12d\uc2dc\ud5d8 \ubc0f \uace0\uc7a5\uc0bd\uc785\uc2dc\ud5d8\uc744 \uc218\ud589\ud55c\ub2e4. \ubc1c\uacac\ub41c \ubb38\uc81c\ub294 \ud604\uc0c1, \uc6d0\uc778, \uc870\uce58 \ubc0f \uc7ac\uc2dc\ud5d8 \uacb0\uacfc\uae4c\uc9c0 \ub2eb\uc544\uc57c \ud55c\ub2e4. Validation\uc740 \uac1c\ubcc4 \uc2dc\ud5d8\uc758 \uc9d1\ud569\uc774 \uc544\ub2c8\ub77c \uc804\uccb4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc5d0 \ub300\ud55c \uc885\ud569 \ud655\uc778\uc774\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"10\"><h3>\uc6b4\uc804\uacfc \uc720\uc9c0\ubcf4\uc218\ub85c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4<\/h3><p>\uc6b4\uc804\uc808\ucc28\uc640 \uc815\ube44\uc808\ucc28\ub97c \uba85\ud655\ud788 \ud55c\ub2e4. Proof Test\ub97c \uc815\ud574\uc9c4 \uc8fc\uae30\ub85c \uc218\ud589\ud55c\ub2e4. \uc2e4\uc81c Demand \ud69f\uc218, \uace0\uc7a5, \uc624\ub3d9\uc791, \uc218\ub9ac \ubc0f \uad50\uccb4\uc774\ub825\uc744 \uae30\ub85d\ud55c\ub2e4. \uae30\ub85d\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \uac80\ud1a0\ud558\uc5ec \ucd5c\ucd08 SIL \uac00\uc815\uacfc \uace0\uc7a5\ub960 \uac00\uc815\uc774 \uc801\uc808\ud588\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4. \uc811\uadfc\uad8c\ud55c\uacfc \uc6b4\uc804\uc790 \uad50\uc721\ub3c4 \uad00\ub9ac\ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"11\"><h3>\ubcc0\uacbd\uc744 \ud1b5\uc81c\ud558\uace0 \uc7ac\uac80\uc99d\ud55c\ub2e4<\/h3><p>\ubaa8\ub4e0 \ubcc0\uacbd\uc740 \ud615\uc0c1\uad00\ub9ac \ub300\uc0c1\uc774\ub2e4. \ubcc0\uacbd\uc0ac\uc720\uc640 \uc601\ud5a5\ubd84\uc11d\uc744 \uae30\ub85d\ud55c\ub2e4. \ubcc0\uacbd\ub41c \ubaa8\ub4c8\ubfd0 \uc544\ub2c8\ub77c \uc601\ud5a5\uc744 \ubc1b\ub294 \uc778\ud130\ud398\uc774\uc2a4\uc640 \uad00\ub828 \ubaa8\ub4c8\ub3c4 \uc7ac\uac80\uc99d\ud55c\ub2e4. \ubcc0\uacbd\uc73c\ub85c SRS, \uc2e0\ub8b0\ub3c4 \uacc4\uc0b0, \uc2dc\ud5d8\ubc94\uc704 \ub610\ub294 Safety Manual\uc774 \ub2ec\ub77c\uc9c0\uba74 \uad00\ub828 \ubb38\uc11c\ub97c \ubaa8\ub450 \uac31\uc2e0\ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"12\"><h3>\uc801\ud569\uc131 \uc785\uc99d\uc790\ub8cc\ub97c \uc644\uc131\ud55c\ub2e4<\/h3><p>IEC 61508 \uc694\uad6c\uc0ac\ud56d\ubcc4\ub85c \uc99d\uac70\ubb38\uc11c\ub97c \uc5f0\uacb0\ud55c\ub2e4. \uc99d\uac70\uc5d0\ub294 SRS, \uc124\uacc4\uc11c, FMEA, CCF \ubd84\uc11d\uc11c, PFD\/PFH \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uacc4\ud68d\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, Validation \ubcf4\uace0\uc11c, Safety Manual, \ubcc0\uacbd\uc774\ub825 \ubc0f \uc6b4\uc804\uae30\ub85d\uc774 \ud3ec\ud568\ub41c\ub2e4. \ucd5c\uc885 \ubaa9\uc801\uc740 \u201c\ud45c\uc900\uc744 \uc801\uc6a9\ud588\ub2e4\u201d\uace0 \uc120\uc5b8\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, \uac01 \uc694\uad6c\uc0ac\ud56d\uc774 \ucda9\uc871\ub418\uc5c8\uc74c\uc744 \ucd94\uc801 \uac00\ub2a5\ud55c \uc790\ub8cc\ub85c \uc785\uc99d\ud558\ub294 \uac83\uc774\ub2e4.<\/p><\/article>\n <\/div>\n\n <div class=\"keybox\">\n <h4>\ucd5c\uc885 \ud750\ub984 \uc694\uc57d<\/h4>\n \uc704\ud5d8\ubd84\uc11d\uacfc SIL \uc124\uc815\uc5d0\uc11c \uc2dc\uc791\ud55c\ub2e4. SRS\ub85c \uc548\uc804\uae30\ub2a5\uc744 \uba85\ud655\ud788 \ud55c\ub2e4. \uad6c\uc870\ud654, \ubaa8\ub4c8\ud654, \ubd84\ub9ac, \uc911\ubcf5 \ubc0f \ub2e4\uc591\uc131\uc73c\ub85c \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ubc29\uc5b4\ud55c\ub2e4. SFF\uc640 HFT\ub85c \ud558\ub4dc\uc6e8\uc5b4 \uad6c\uc870\ub97c \uac80\ud1a0\ud55c\ub2e4. PFD \ub610\ub294 PFH\ub85c \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \ubaa9\ud45c\ub97c \ud655\uc778\ud55c\ub2e4. Verification\uacfc Validation\uc73c\ub85c \uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc744 \uc785\uc99d\ud55c\ub2e4. \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218 \ubc0f \ubcc0\uacbd\uad00\ub9ac\ub85c \ub2ec\uc131\ub41c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"references\" class=\"reference\">\n <h2 class=\"section-title\">\ucc38\uace0\ubb38\ud5cc<\/h2>\n <p>David J. Smith and Kenneth G. L. Simpson, <em>The Safety Critical Systems Handbook: A Straightforward Guide to Functional Safety, IEC 61508, IEC 61511 and Related Guidance<\/em>, 4th ed., Butterworth-Heinemann, 2016, Chapter 3, pp. 57\u201378.<\/p>\n <\/section>\n <\/main>\n <\/div>\n <\/div>\n\n <footer>IEC 61508 Part 2 Chapter 3 \ud559\uc2b5\uc6a9 HTML \ubb38\uc11c \u00b7 \ub2e8\uc77c \ud504\ub808\uc784<\/footer>\n<\/body>\n<\/html>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/TheSafetyCriticlaSystem-6.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"TheSafetyCriticlaSystem-6\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-11b4ee2d-2c65-4536-b40a-2df05a3d7ab3\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/TheSafetyCriticlaSystem-6.pdf\">TheSafetyCriticlaSystem-6<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/TheSafetyCriticlaSystem-6.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-11b4ee2d-2c65-4536-b40a-2df05a3d7ab3\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<pre class=\"wp-block-code\"><code>\\documentclass[11pt,a4paper]{article}\n\n\\usepackage{kotex}\n\\usepackage[margin=22mm]{geometry}\n\\usepackage{setspace}\n\\usepackage{booktabs}\n\\usepackage{tabularx}\n\\usepackage{array}\n\\usepackage{enumitem}\n\\usepackage{xcolor}\n\\usepackage{amsmath}\n\\usepackage{tikz}\n\\usepackage[most]{tcolorbox}\n\\usepackage[hidelinks]{hyperref}\n\\usetikzlibrary{arrows.meta,positioning,shapes.geometric,fit}\n\n\\setstretch{1.18}\n\\setlist[itemize]{leftmargin=1.7em,itemsep=2pt,topsep=3pt}\n\\setlist[enumerate]{leftmargin=2.0em,itemsep=4pt,topsep=4pt}\n\\renewcommand{\\arraystretch}{1.35}\n\n\\definecolor{navy}{RGB}{28,56,92}\n\\definecolor{bluegray}{RGB}{230,237,245}\n\\definecolor{lightgray}{RGB}{246,247,249}\n\\definecolor{darkgray}{RGB}{65,70,78}\n\n\\newtcolorbox{keybox}[1]{\n colback=bluegray,\n colframe=navy,\n boxrule=0.7pt,\n arc=1.5mm,\n title=\\textbf{#1},\n fonttitle=\\bfseries\n}\n\n\\newtcolorbox{summarybox}{\n colback=lightgray,\n colframe=darkgray,\n boxrule=0.6pt,\n arc=1.5mm\n}\n\n\\newcommand{\\eng}[1]{\\textit{#1}}\n\\newcommand{\\term}[1]{\\textbf{#1}}\n\n\\title{\\textbf{IEC 61508 Part 2 \uae30\ubc18\\\\\uc548\uc804\uad00\ub828 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc815\ub9ac}}\n\\author{\\eng{The Safety Critical Systems Handbook}, Chapter 3 \ud559\uc2b5 \ub178\ud2b8}\n\\date{}\n\n\\begin{document}\n\n\\maketitle\n\n\\begin{summarybox}\nChapter 3\uc740 IEC 61508 Part 2\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \uc124\uba85\ud55c\ub2e4. \ub300\uc0c1\uc740 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc758 \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc124\uacc4\uc774\ub2e4. \ud575\uc2ec\uc740 \ubaa9\ud45c SIL\uc744 \ub9cc\uc871\ud558\ub294 \uc124\uacc4\ub97c \uc218\ud589\ud558\uace0, \uadf8 \uacb0\uacfc\ub97c \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, \uac80\ud1a0\uae30\ub85d \ubc0f \uc6b4\uc804\uae30\ub85d\uc73c\ub85c \uc785\uc99d\ud558\ub294 \uac83\uc774\ub2e4.\n\\end{summarybox}\n\n\\tableofcontents\n\\newpage\n\n% =========================================================\n\\section{\ud0a4\uc6cc\ub4dc \uc815\uc758}\n% =========================================================\n\n\\subsection{\uc801\uc6a9 \ubc94\uc704\uc640 \uae30\ubcf8 \uac1c\ub150}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\nIEC 61508 Part 2 & \uc548\uc804\uad00\ub828 \uc804\uae30\u00b7\uc804\uc790\u00b7\ud504\ub85c\uadf8\ub7a8 \uac00\ub2a5 \uc804\uc790 \uc2dc\uc2a4\ud15c\uc758 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc694\uad6c\uc0ac\ud56d\uc744 \ub2e4\ub8ec\ub2e4. \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c \uc694\uad6c\uc0ac\ud56d\uc740 Part 3\uc5d0\uc11c \ub2e4\ub8ec\ub2e4. \\\\\nE\/E\/PE \uc2dc\uc2a4\ud15c & Electrical, Electronic, Programmable Electronic System\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc804\uae30, \uc804\uc790 \ub610\ub294 \ud504\ub85c\uadf8\ub7a8 \uac00\ub2a5 \uc804\uc790\uae30\uc220\uc744 \uc774\uc6a9\ud558\uc5ec \uc548\uc804\uae30\ub2a5\uc744 \uc218\ud589\ud558\ub294 \uc2dc\uc2a4\ud15c\uc774\ub2e4. \\\\\nEUC & Equipment Under Control\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uc2dc\uc2a4\ud15c\uc774 \uac10\uc2dc\ud558\uac70\ub098 \ubcf4\ud638\ud558\ub294 \ub300\uc0c1 \uc124\ube44\uc774\ub2e4. \\\\\n\uc548\uc804\uae30\ub2a5 & \ud2b9\uc815 \uc704\ud5d8\uacfc \uad00\ub828\ud558\uc5ec EUC\ub97c \uc548\uc804\uc0c1\ud0dc\ub85c \uc720\uc9c0\ud558\uac70\ub098 \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud558\ub294 \uae30\ub2a5\uc774\ub2e4. \\\\\n\uc548\uc804\uc0c1\ud0dc & \uc704\ud5d8\uc774 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc218\uc900\uc73c\ub85c \uac10\uc18c\ub41c \uc124\ube44 \uc0c1\ud0dc\uc774\ub2e4. \uacf5\uc815 \uc815\uc9c0, \ubc38\ube0c \ucc28\ub2e8, \uc5d0\ub108\uc9c0 \ucc28\ub2e8 \ub4f1\uc774 \ud574\ub2f9\ud560 \uc218 \uc788\ub2e4. \\\\\nSIL & Safety Integrity Level\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uae30\ub2a5\uc5d0 \uc694\uad6c\ub418\ub294 \ubb34\uacb0\uc131 \uc218\uc900\uc774\ub2e4. SIL\uc774 \ub192\uc544\uc9c8\uc218\ub85d \uc124\uacc4, \ub3c5\ub9bd\uc131, \uac80\uc99d \ubc0f \ubb38\uc11c\ud654 \uc218\uc900\uc774 \uac15\ud654\ub41c\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{\uc0dd\uba85\uc8fc\uae30\uc640 \uc694\uad6c\uc0ac\ud56d}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\n\uc548\uc804 \uc0dd\uba85\uc8fc\uae30 & \uc694\uad6c\uc0ac\ud56d \uc815\uc758, \uc124\uacc4, \uc81c\uc791, \uc124\uce58, \uc2dc\ud5d8, \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218, \ubcc0\uacbd \ubc0f \ud3d0\uae30\uae4c\uc9c0 \uc548\uc804\uc744 \uad00\ub9ac\ud558\ub294 \uc804\uccb4 \uc808\ucc28\uc774\ub2e4. \\\\\n\uae30\ub2a5\uc548\uc804\uad00\ub9ac & Functional Safety Management\uc758 \uc758\ubbf8\uc774\ub2e4. \uc5ed\ud560, \ucc45\uc784, \uc5ed\ub7c9, \ubb38\uc11c, \uac80\ud1a0, \uac10\uc0ac \ubc0f \ud615\uc0c1\uad00\ub9ac\ub97c \uccb4\uacc4\uc801\uc73c\ub85c \uc6b4\uc601\ud558\ub294 \uad00\ub9ac\uccb4\uacc4\uc774\ub2e4. \\\\\nQuality and Safety Plan & \ud504\ub85c\uc81d\ud2b8\uc758 \uae30\ub2a5\uc548\uc804 \ubaa9\ud45c, \uc870\uc9c1, \ucc45\uc784, \ubb38\uc11c\uccb4\uacc4, \uac80\uc99d\uacc4\ud68d \ubc0f \ud655\uc778\uacc4\ud68d\uc744 \uc815\uc758\ud558\ub294 \ucd5c\uc0c1\uc704 \uacc4\ud68d\uc11c\uc774\ub2e4. \\\\\nSRS & Safety Requirements Specification\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uae30\ub2a5, SIL, \uc751\ub2f5\uc2dc\uac04, \uc548\uc804\uc0c1\ud0dc, \uc6b4\uc804\ubaa8\ub4dc, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f \uc2dc\ud5d8\uc870\uac74\uc744 \uba85\ud655\ud558\uace0 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \ud615\ud0dc\ub85c \uc815\uc758\ud55c \ubb38\uc11c\uc774\ub2e4. \\\\\n\ucd94\uc801\uc131 & \uc694\uad6c\uc0ac\ud56d\uc774 \uc124\uacc4, \uad6c\ud604, \uc2dc\ud5d8 \ubc0f \uacb0\uacfc\ubcf4\uace0\uc11c\uc640 \uc5f0\uacb0\ub418\ub294 \uc131\uc9c8\uc774\ub2e4. \uc694\uad6c\uc0ac\ud56d \ub204\ub77d\uacfc \ubbf8\uac80\uc99d \ud56d\ubaa9\uc744 \ubc29\uc9c0\ud55c\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{\uc124\uacc4\uc640 \ub3c5\ub9bd\uc131}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\n\uad6c\uc870\ud654 \uc124\uacc4 & \uae30\ub2a5\uc744 \uba85\ud655\ud788 \ubd84\ud560\ud558\uace0 \uacc4\uce35\uacfc \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc2dd\ubcc4\ud560 \uc218 \uc788\ub3c4\ub85d \uc124\uacc4\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \\\\\n\ubaa8\ub4c8\ud654 & \uc2dc\uc2a4\ud15c\uc744 \ub3c5\ub9bd\uc801\uc778 \uae30\ub2a5 \ub2e8\uc704\ub85c \ubd84\ub9ac\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \uacb0\ud568\uc758 \uc804\ud30c\ub97c \uc81c\ud55c\ud558\uace0 \uc2dc\ud5d8\uacfc \ubcc0\uacbd\uc744 \uc6a9\uc774\ud558\uac8c \ud55c\ub2e4. \\\\\n\ubd84\ub9ac & EUC, \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c, \uc548\uc804\uc2dc\uc2a4\ud15c \ubc0f \uc911\ubcf5 \ucc44\ub110 \uc0ac\uc774\uc758 \ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801\u00b7\ub370\uc774\ud130\uc801 \ub3c5\ub9bd\uc744 \ud655\ubcf4\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \\\\\n\uc911\ubcf5\uc131 & \ub3d9\uc77c\ud55c \uc548\uc804\uae30\ub2a5\uc744 \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774 \uc218\ud589\ud558\ub3c4\ub85d \uad6c\uc131\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4. \ud558\ub098\uc758 \uace0\uc7a5\uc774 \uc804\uccb4 \uae30\ub2a5 \uc0c1\uc2e4\ub85c \uc774\uc5b4\uc9c0\ub294 \uac83\uc744 \ubc29\uc9c0\ud55c\ub2e4. \\\\\n\ub2e4\uc591\uc131 & \uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \uc124\uacc4 \ub610\ub294 \uad6c\ud604\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4. \ub3d9\uc77c \uc6d0\uc778\uc73c\ub85c \uc911\ubcf5 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud558\ub294 \uac83\uc744 \ubc29\uc9c0\ud55c\ub2e4. \\\\\nCCF & Common Cause Failure\uc758 \uc57d\uc5b4\uc774\ub2e4. \uacf5\ud1b5\ub41c \uc6d0\uc778\uc73c\ub85c \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uace0\uc7a5 \ub098\ub294 \ud604\uc0c1\uc774\ub2e4. \\\\\n\uc9c4\ub2e8\ubc94\uc704 & Diagnostic Coverage\uc758 \uc758\ubbf8\uc774\ub2e4. \uc704\ud5d8\uace0\uc7a5 \uc911 \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4. \\\\\nWatchdog & CPU \uc815\uc9c0, \ud504\ub85c\uadf8\ub7a8 \uc21c\uc11c \uc774\uc0c1 \ub610\ub294 \uc2e4\ud589\uc2dc\uac04 \uc774\uc0c1\uc744 \uac10\uc2dc\ud558\ub294 \uae30\ubcf8 \uc9c4\ub2e8\uae30\ub2a5\uc774\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{\ud558\ub4dc\uc6e8\uc5b4 \uc548\uc804\ubb34\uacb0\uc131 \ud3c9\uac00}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\n\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 & \ubd80\ud488 \uc5f4\ud654\ub098 \ubb3c\ub9ac\uc801 \uc190\uc0c1\ucc98\ub7fc \uace0\uc7a5\ub960\ub85c \uc815\ub7c9\ud654\ud560 \uc218 \uc788\ub294 \uace0\uc7a5\uc774\ub2e4. \\\\\n\uccb4\uacc4\uc801 \uace0\uc7a5 & \uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \uc81c\uc791, \ubcc0\uacbd \ub610\ub294 \uc6b4\uc804\uc808\ucc28\uc758 \uacb0\ud568\ucc98\ub7fc \ud2b9\uc815 \uc870\uac74\uc5d0\uc11c \ubc18\ubcf5\ub418\ub294 \uace0\uc7a5\uc774\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uace0\uc7a5\ub960\ub85c \uc9c1\uc811 \uc608\uce21\ud558\uc9c0 \uc54a\ub294\ub2e4. \\\\\nSFF & Safe Failure Fraction\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uce21 \uace0\uc7a5\uacfc \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4. \\\\\nHFT & Hardware Fault Tolerance\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc2dc\uc2a4\ud15c\uc774 \uc548\uc804\uae30\ub2a5\uc744 \uc0c1\uc2e4\ud558\uc9c0 \uc54a\uace0 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \uac1c\uc218\uc774\ub2e4. \\\\\nType A \uc694\uc18c & \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5 \uc2dc \ub3d9\uc791 \ubc0f \uace0\uc7a5\ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \uc54c\ub824\uc9c4 \ube44\uad50\uc801 \ub2e8\uc21c\ud55c \uc694\uc18c\uc774\ub2e4. \\\\\nType B \uc694\uc18c & \ubcf5\uc7a1\ud55c \uc804\uc790\uc7a5\uce58\ucc98\ub7fc \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5 \uc2dc \ub3d9\uc791 \ub610\ub294 \uace0\uc7a5\ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \uc54c\ub824\uc9c0\uc9c0 \uc54a\uc740 \uc694\uc18c\uc774\ub2e4. \\\\\nPFD & Probability of Failure on Demand\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc800\uc218\uc694 \uc548\uc804\uae30\ub2a5\uc774 \uc694\uad6c\ub420 \ub54c \uc2e4\ud328\ud560 \ud3c9\uade0 \ud655\ub960\uc774\ub2e4. \\\\\nPFH & Probability of dangerous Failure per Hour\uc758 \uc758\ubbf8\uc774\ub2e4. \uace0\uc218\uc694 \ub610\ub294 \uc5f0\uc18d\uc6b4\uc804 \uc548\uc804\uae30\ub2a5\uc758 \uc2dc\uac04\ub2f9 \uc704\ud5d8\uace0\uc7a5 \ube48\ub3c4\uc774\ub2e4. \\\\\nFMEA & Failure Mode and Effects Analysis\uc758 \uc57d\uc5b4\uc774\ub2e4. \ubd80\ud488\ubcc4 \uace0\uc7a5\ubaa8\ub4dc\uc640 \uc2dc\uc2a4\ud15c \uc601\ud5a5\uc744 \ubd84\uc11d\ud558\ub294 \uae30\ubc95\uc774\ub2e4. \\\\\nFTA & Fault Tree Analysis\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc0c1\uc704 \uc704\ud5d8\uc0ac\uac74\uc758 \uc6d0\uc778\uc744 \ub17c\ub9ac\uc801\uc73c\ub85c \uc804\uac1c\ud558\ub294 \uae30\ubc95\uc774\ub2e4. \\\\\nProof Test & \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \ubc1c\uacac\ub418\uc9c0 \uc54a\ub294 \uc7a0\uc7ac \uc704\ud5d8\uace0\uc7a5\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \ud655\uc778\ud558\ub294 \uc2dc\ud5d8\uc774\ub2e4. \\\\\nRoute 1H & SFF\uc640 HFT\uc5d0 \ub530\ub978 \uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d\uc744 \uc801\uc6a9\ud558\uc5ec \ucd5c\ub300 SIL\uc744 \ud310\ub2e8\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \\\\\nRoute 2H & \ucda9\ubd84\ud558\uace0 \uac80\uc99d\ub41c \ud604\uc7a5 \uace0\uc7a5\ub370\uc774\ud130\ub97c \uc774\uc6a9\ud558\uc5ec \ud558\ub4dc\uc6e8\uc5b4 \uc544\ud0a4\ud14d\ucc98 \uc801\ud569\uc131\uc744 \uc8fc\uc7a5\ud558\ub294 \ub300\uc548 \uacbd\ub85c\uc774\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{\uc2dc\ud5d8, \ud655\uc778 \ubc0f \uc99d\uac70}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\nVerification & \uac01 \uc0dd\uba85\uc8fc\uae30 \ub2e8\uacc4\uc758 \uc0b0\ucd9c\ubb3c\uc774 \uc774\uc804 \ub2e8\uacc4\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \uc62c\ubc14\ub974\uac8c \ub9cc\uc871\ud558\ub294\uc9c0 \uac80\ud1a0\ud558\uace0 \uc2dc\ud5d8\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. ``\uc124\uacc4\ub97c \uc62c\ubc14\ub974\uac8c \uad6c\ud604\ud588\ub294\uac00''\ub97c \ud655\uc778\ud55c\ub2e4. \\\\\nValidation & \uc644\uc131\ub41c \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc774 \uc2e4\uc81c \uc0ac\uc6a9\ud658\uacbd\uc5d0\uc11c \uc804\uccb4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 \ub9cc\uc871\ud558\ub294\uc9c0 \ud655\uc778\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. ``\ud544\uc694\ud55c \uc548\uc804\uc2dc\uc2a4\ud15c\uc744 \ub9cc\ub4e4\uc5c8\ub294\uac00''\ub97c \ud655\uc778\ud55c\ub2e4. \\\\\nSafety Manual & \uc548\uc804\uad00\ub828 \uc7a5\uce58\uc758 \uae30\ub2a5, \uad6c\uc131, \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5\ub960, \uc9c4\ub2e8\ubc94\uc704, HFT, \uc0ac\uc6a9\uc81c\ud55c \ubc0f Proof Test \uc870\uac74\uc744 \uc81c\uacf5\ud558\ub294 \ubb38\uc11c\uc774\ub2e4. \\\\\n\uc601\ud5a5\ubd84\uc11d & \ubcc0\uacbd\uc774 \uc548\uc804\uae30\ub2a5, \uc778\ud130\ud398\uc774\uc2a4, \uc2dc\ud5d8\ubc94\uc704 \ubc0f \uae30\uc874 \uac80\uc99d\uacb0\uacfc\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5\uc744 \ud3c9\uac00\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \\\\\nProven in Use & \uc720\uc0ac\ud55c \ud658\uacbd\uacfc \uc6a9\ub3c4\uc5d0\uc11c \ucd95\uc801\ub41c \ucda9\ubd84\ud55c \ud604\uc7a5 \uc6b4\uc804 \ubc0f \uace0\uc7a5\ub370\uc774\ud130\ub97c \uc774\uc6a9\ud558\uc5ec \uc801\ud569\uc131\uc744 \uc8fc\uc7a5\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \\\\\n\uc801\ud569\uc131 \uc785\uc99d & IEC 61508\uc758 \uac01 \uc694\uad6c\uc0ac\ud56d\uacfc \uc774\ub97c \ucda9\uc871\ud558\ub294 \uc0ac\uc591\uc11c, \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, \uac80\ud1a0\uc11c \ubc0f \uc6b4\uc804\uae30\ub85d\uc744 \uc5f0\uacb0\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n% =========================================================\n\\section{\ud0a4\uc6cc\ub4dc \uac04 \uad00\uacc4 \uc815\ub9ac}\n% =========================================================\n\n\\subsection{\uc804\uccb4 \uad00\uacc4}\n\n\\begin{center}\n\\begin{tikzpicture}[\n node distance=8mm and 7mm,\n box\/.style={draw=navy, rounded corners, fill=bluegray, align=center, minimum height=9mm, text width=29mm, font=\\small},\n arrow\/.style={-{Latex[length=2mm]}, thick, draw=darkgray}\n]\n\\node[box] (sil) {\uc704\ud5d8\ubd84\uc11d\\\\\ubc0f SIL \ubaa9\ud45c};\n\\node[box, right=of sil] (srs) {SRS\\\\\uc548\uc804\uae30\ub2a5 \uc815\uc758};\n\\node[box, right=of srs] (design) {\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\\\\\ubd84\ub9ac\u00b7\ub2e4\uc591\uc131};\n\\node[box, below=of design] (arch) {SFF\u00b7HFT\\\\\uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d};\n\\node[box, left=of arch] (quant) {PFD\u00b7PFH\\\\\uc815\ub7c9\ud3c9\uac00};\n\\node[box, left=of quant] (verify) {\ud1b5\ud569\uc2dc\ud5d8\\\\Verification};\n\\node[box, below=of verify] (valid) {Validation\\\\\uc694\uad6c\uc0ac\ud56d \uc885\ud569\ud655\uc778};\n\\node[box, right=of valid] (ops) {\uc6b4\uc804\u00b7\uc815\ube44\\\\Proof Test};\n\\node[box, right=of ops] (evidence) {\uc801\ud569\uc131 \uc785\uc99d\\\\Evidence};\n\n\\draw[arrow] (sil) -- (srs);\n\\draw[arrow] (srs) -- (design);\n\\draw[arrow] (design) -- (arch);\n\\draw[arrow] (arch) -- (quant);\n\\draw[arrow] (quant) -- (verify);\n\\draw[arrow] (verify) -- (valid);\n\\draw[arrow] (valid) -- (ops);\n\\draw[arrow] (ops) -- (evidence);\n\\draw[arrow, dashed] (evidence.north) to[bend right=28] node[above, font=\\scriptsize]{\ubcc0\uacbd\u00b7\uc7ac\uac80\uc99d} (srs.south);\n\\end{tikzpicture}\n\\end{center}\n\n\\begin{keybox}{\uad00\uacc4\uc758 \ud575\uc2ec}\n\\begin{itemize}\n \\item SIL\uc740 \ucd9c\ubc1c\uc810\uc774\ub2e4. SIL\uc740 \uc548\uc804\uae30\ub2a5\ubcc4 \uc694\uad6c\uc218\uc900\uc744 \uacb0\uc815\ud55c\ub2e4.\n \\item SRS\ub294 SIL\uc744 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \uc694\uad6c\uc0ac\ud56d\uc73c\ub85c \ubcc0\ud658\ud55c\ub2e4.\n \\item \uc124\uacc4\uae30\ubc95\uc740 \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uc904\uc778\ub2e4.\n \\item SFF\uc640 HFT\ub294 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \ud558\ub4dc\uc6e8\uc5b4 \uad6c\uc870\ub97c \uc81c\ud55c\ud55c\ub2e4.\n \\item PFD \ub610\ub294 PFH\ub294 \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\ub7c9 \ubaa9\ud45c \ub2ec\uc131 \uc5ec\ubd80\ub97c \ud310\ub2e8\ud55c\ub2e4.\n \\item Verification\uacfc Validation\uc740 \uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc744 \uc2dc\ud5d8\uacfc \uae30\ub85d\uc73c\ub85c \ud655\uc778\ud55c\ub2e4.\n \\item \uc6b4\uc804\u00b7\uc815\ube44\uc640 \ubcc0\uacbd\uad00\ub9ac\ub294 \ub2ec\uc131\ub41c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc218\uba85\uc8fc\uae30 \ub3d9\uc548 \uc720\uc9c0\ud55c\ub2e4.\n\\end{itemize}\n\\end{keybox}\n\n\\subsection{\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc758 \uad00\uacc4}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.21\\textwidth} X X}\n\\toprule\n\uad6c\ubd84 & \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 & \uccb4\uacc4\uc801 \uace0\uc7a5 \\\\\n\\midrule\n\ubc1c\uc0dd \uc6d0\uc778 & \ubd80\ud488 \uc5f4\ud654, \ubb3c\ub9ac\uc801 \uc190\uc0c1, \uc6b0\ubc1c\uc801 \uace0\uc7a5 & \uc694\uad6c\uc0ac\ud56d \uc624\ub958, \uc124\uacc4 \uacb0\ud568, \uc81c\uc791 \uc624\ub958, \ubcc0\uacbd \uc624\ub958, \uc6b4\uc804\uc808\ucc28 \uc624\ub958 \\\\\n\ud3c9\uac00 \ubc29\ubc95 & \uace0\uc7a5\ub960, PFD, PFH, \uc2e0\ub8b0\ub3c4 \ubaa8\ub378, FMEA, FTA & \uc0dd\uba85\uc8fc\uae30 \uad00\ub9ac, \uc124\uacc4\ud45c\uc900, \ub3c5\ub9bd\uac80\ud1a0, \uc2dc\ud5d8, \ud615\uc0c1\uad00\ub9ac, \uc5ed\ub7c9\uad00\ub9ac \\\\\n\uc8fc\uc694 \ud0a4\uc6cc\ub4dc & SFF, HFT, \uc9c4\ub2e8\ubc94\uc704, Proof Test, CCF & SRS, \uad6c\uc870\ud654 \uc124\uacc4, \ubaa8\ub4c8\ud654, \ubd84\ub9ac, \ub2e4\uc591\uc131, Verification \\\\\n\ud310\uc815 \ubc29\uc2dd & \uc815\ub7c9\uc801 \ubaa9\ud45c\uc640 \ube44\uad50 & SIL\uc5d0 \ub300\uc751\ud558\ub294 \uc808\ucc28\uc640 \uae30\ubc95\uc758 \uc5c4\uaca9\uc131\uc73c\ub85c \ud310\ub2e8 \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\begin{summarybox}\n\ubaa9\ud45c SIL \ub2ec\uc131\uc740 \ud558\ub098\uc758 \uacc4\uc0b0\uc73c\ub85c \uacb0\uc815\ub418\uc9c0 \uc54a\ub294\ub2e4. \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\ub7c9\ud3c9\uac00\uc640 \uccb4\uacc4\uc801 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\uc131\uc801 \ubc29\uc5b4\uac00 \ub3d9\uc2dc\uc5d0 \ud544\uc694\ud558\ub2e4.\n\\end{summarybox}\n\n\\subsection{SFF, HFT, PFD\/PFH\uc758 \uad00\uacc4}\n\n\\begin{enumerate}\n \\item \\term{SFF}\ub294 \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uce21 \uace0\uc7a5\uacfc \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc744 \ub098\ud0c0\ub0b8\ub2e4.\n \\item \\term{HFT}\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc744 \uba87 \uac1c\uae4c\uc9c0 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b8\ub2e4.\n \\item \\term{SFF\uc640 HFT}\ub294 \ud574\ub2f9 \uad6c\uc870\uc5d0\uc11c \uc8fc\uc7a5\ud560 \uc218 \uc788\ub294 \ucd5c\ub300 SIL\uc744 \uc81c\ud55c\ud55c\ub2e4.\n \\item \\term{PFD \ub610\ub294 PFH}\ub294 \uc120\ud0dd\ud55c \uad6c\uc870\uc758 \uc2e4\uc81c \uc704\ud5d8\uace0\uc7a5 \ud655\ub960 \ub610\ub294 \ube48\ub3c4\ub97c \uacc4\uc0b0\ud55c\ub2e4.\n \\item \ub530\ub77c\uc11c \uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d\uc744 \ub9cc\uc871\ud558\ub354\ub77c\ub3c4 PFD\/PFH \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\uc9c0 \ubabb\ud558\uba74 \uc124\uacc4\ub294 \ubd80\uc801\ud569\ud558\ub2e4.\n \\item \ubc18\ub300\ub85c PFD\/PFH \uacc4\uc0b0\uac12\uc774 \ucda9\ubd84\ud788 \ub0ae\ub354\ub77c\ub3c4 SFF\/HFT \uc81c\uc57d\uc744 \ucda9\uc871\ud558\uc9c0 \ubabb\ud558\uba74 \ud574\ub2f9 SIL\uc744 \uc8fc\uc7a5\ud560 \uc218 \uc5c6\ub2e4.\n\\end{enumerate}\n\n\\[\n\\text{SIL \uc801\ud569\uc131}\n=\n\\text{\uc544\ud0a4\ud14d\ucc98 \uc801\ud569\uc131(SFF\/HFT)}\n+\n\\text{\uc815\ub7c9 \uc801\ud569\uc131(PFD\/PFH)}\n+\n\\text{\uccb4\uacc4\uc801 \uace0\uc7a5 \ubc29\uc5b4}\n\\]\n\n\\subsection{\uc911\ubcf5\uc131, \ub2e4\uc591\uc131, \ubd84\ub9ac \ubc0f CCF\uc758 \uad00\uacc4}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.19\\textwidth} X}\n\\toprule\n\uad00\uacc4 & \uc124\uba85 \\\\\n\\midrule\n\uc911\ubcf5\uc131 $\\rightarrow$ HFT \uc99d\uac00 & \ud558\ub098\uc758 \ucc44\ub110\uc774 \uace0\uc7a5 \ub098\ub3c4 \ub2e4\ub978 \ucc44\ub110\uc774 \uc548\uc804\uae30\ub2a5\uc744 \uc720\uc9c0\ud55c\ub2e4. \\\\\n\uc911\ubcf5\uc131 $\\not\\Rightarrow$ CCF \uc81c\uac70 & \ub3d9\uc77c \uc804\uc6d0, \ub3d9\uc77c \ud658\uacbd, \ub3d9\uc77c \uc124\uacc4 \uc624\ub958\uac00 \uc788\uc73c\uba74 \ubaa8\ub4e0 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4. \\\\\n\ub2e4\uc591\uc131 $\\rightarrow$ CCF \uac10\uc18c & \uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \ubd80\ud488 \ub610\ub294 \ub17c\ub9ac\ub97c \uc801\uc6a9\ud558\uc5ec \ub3d9\uc77c \uc6d0\uc778\uc5d0 \uc758\ud55c \ub3d9\uc2dc\uace0\uc7a5\uc744 \uc904\uc778\ub2e4. \\\\\n\ubd84\ub9ac $\\rightarrow$ \ub3c5\ub9bd\uc131 \uc99d\uac00 & \ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801\u00b7\ub370\uc774\ud130\uc801 \uac04\uc12d\uacfc \uace0\uc7a5\uc804\ud30c\ub97c \uc81c\ud55c\ud55c\ub2e4. \\\\\n\uc9c4\ub2e8 $\\rightarrow$ SFF \uc99d\uac00 & \uc704\ud5d8\uace0\uc7a5\uc744 \uc790\ub3d9\uc73c\ub85c \uac80\ucd9c\ud558\uc5ec \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud560 \uc218 \uc788\ub2e4. \\\\\nProof Test $\\rightarrow$ \uc7a0\uc7ac\uace0\uc7a5 \uac10\uc18c & \uc790\ub3d9\uc9c4\ub2e8\uc774 \uac80\ucd9c\ud558\uc9c0 \ubabb\ud55c \uc704\ud5d8\uace0\uc7a5\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \ubc1c\uacac\ud55c\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{Verification\uacfc Validation\uc758 \uad00\uacc4}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.20\\textwidth} X X}\n\\toprule\n\uad6c\ubd84 & Verification & Validation \\\\\n\\midrule\n\ud575\uc2ec \uc9c8\ubb38 & \uc124\uacc4\ub97c \uc694\uad6c\uc0ac\ud56d\ub300\ub85c \uc62c\ubc14\ub974\uac8c \uad6c\ud604\ud588\ub294\uac00? & \uc644\uc131\ub41c \uc2dc\uc2a4\ud15c\uc774 \uc2e4\uc81c \uc548\uc804\uc694\uad6c\ub97c \ucda9\uc871\ud558\ub294\uac00? \\\\\n\ub300\uc0c1 & \ub2e8\uacc4\ubcc4 \uc0ac\uc591\uc11c, \uc124\uacc4\uc11c, \ubaa8\ub4c8, \uc778\ud130\ud398\uc774\uc2a4, \ud1b5\ud569 \uacb0\uacfc & \uc804\uccb4 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uacfc \uc2e4\uc81c \uc6b4\uc804\uc870\uac74 \\\\\n\uc8fc\uc694 \ubc29\ubc95 & \uac80\ud1a0, \uc785\ub825\ubd84\ud560, \uacbd\uacc4\uac12\uc2dc\ud5d8, \ube44\uc815\uc0c1 \uc785\ub825\uc2dc\ud5d8, \ub17c\ub9ac\uc870\ud569\uc2dc\ud5d8 & \uae30\ub2a5\uc2dc\ud5d8, \ud658\uacbd\uc2dc\ud5d8, \uac04\uc12d\uc2dc\ud5d8, \uace0\uc7a5\uc0bd\uc785, \uc885\ud569 \uc778\uc218\uc2dc\ud5d8 \\\\\n\uacb0\uacfc & \ub2e8\uacc4\ubcc4 \uac80\uc99d\uae30\ub85d\uacfc \uacb0\ud568\uc870\uce58 \uae30\ub85d & \uc804\uccb4 \uc694\uad6c\uc0ac\ud56d \ucd94\uc801\ud45c\uc640 \uc885\ud569 \ud655\uc778\ubcf4\uace0\uc11c \\\\\n\\bottomrule\n\\end{tabularx}\n\n% =========================================================\n\\section{\ud750\ub984\uc5d0 \ub9de\ucd98 \uc124\uba85}\n% =========================================================\n\n\\subsection{1\ub2e8\uacc4: \uae30\ub2a5\uc548\uc804\uad00\ub9ac\uccb4\uacc4\ub97c \uc218\ub9bd\ud55c\ub2e4}\n\n\ud504\ub85c\uc81d\ud2b8\ub97c \uc2dc\uc791\ud560 \ub54c \uc5ed\ud560, \ucc45\uc784, \uc5ed\ub7c9 \ubc0f \ub3c5\ub9bd\uc131\uc744 \uc815\ud55c\ub2e4. Quality and Safety Plan\uc744 \uc791\uc131\ud55c\ub2e4. \uc774 \uacc4\ud68d\uc5d0\ub294 \ubb38\uc11c\uccb4\uacc4, \uac80\ud1a0\ubc29\ubc95, \uc2dc\ud5d8\uc804\ub7b5, \ud615\uc0c1\uad00\ub9ac, Validation \uacc4\ud68d \ubc0f \uae30\ub2a5\uc548\uc804\uac10\uc0ac \uacc4\ud68d\uc774 \ud3ec\ud568\ub418\uc5b4\uc57c \ud55c\ub2e4. \ubaa8\ub4e0 \ud65c\ub3d9\uc740 \uae30\ub85d\ub418\uc5b4\uc57c \ud55c\ub2e4. \uae30\ub85d\uc774 \uc5c6\uc73c\uba74 \ud45c\uc900 \uc900\uc218 \uc5ec\ubd80\ub97c \ud3c9\uac00\ud560 \uc218 \uc5c6\ub2e4.\n\n\\subsection{2\ub2e8\uacc4: \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 SRS\ub85c \uc815\uc758\ud55c\ub2e4}\n\n\uc704\ud5d8\ubd84\uc11d \uacb0\uacfc\ub97c \ubc14\ud0d5\uc73c\ub85c \uc548\uc804\uae30\ub2a5\ubcc4 SIL\uc744 \uc815\ud55c\ub2e4. \uac01 \uc548\uc804\uae30\ub2a5\uc758 \uc800\uc218\uc694 \ub610\ub294 \uace0\uc218\uc694 \ubaa8\ub4dc\ub97c \uad6c\ubd84\ud55c\ub2e4. \uc751\ub2f5\uc2dc\uac04, \uc548\uc804\uc0c1\ud0dc, Trip \uc124\uc815\uac12, Reset \uc870\uac74, \uc804\uc6d0\uc0c1\uc2e4 \uc2dc \ub3d9\uc791, \uc6b4\uc804\ubaa8\ub4dc, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f Proof Test \uc694\uad6c\uc0ac\ud56d\uc744 \uc815\uc758\ud55c\ub2e4. \uc694\uad6c\uc0ac\ud56d\uc740 \uba85\ud655\ud558\uace0 \ubaa8\ud638\ud558\uc9c0 \uc54a\uc73c\uba70 \uc2dc\ud5d8 \uac00\ub2a5\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{3\ub2e8\uacc4: EUC\uc640 \uc548\uc804\uc2dc\uc2a4\ud15c\uc758 \uacbd\uacc4\ub97c \uc815\ud55c\ub2e4}\n\n\uc77c\ubc18 \uc81c\uc5b4\uae30\ub2a5\uacfc \uc548\uc804\uae30\ub2a5\uc758 \uacbd\uacc4\ub97c \uc815\uc758\ud55c\ub2e4. \ub450 \uc2dc\uc2a4\ud15c \uc0ac\uc774\uc758 \uc804\uae30 \ubc0f \ub370\uc774\ud130 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uba85\ud655\ud788 \ud55c\ub2e4. \ud544\uc694\ud55c \uacbd\uc6b0 \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd84\ub9ac\ud55c\ub2e4. \ub3c5\ub9bd\uc131\uc744 \uc785\uc99d\ud560 \uc218 \uc5c6\ub2e4\uba74 \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc744 \ud3ec\ud568\ud55c \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc744 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc73c\ub85c \ucde8\uae09\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{4\ub2e8\uacc4: \uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\ub41c \uc124\uacc4\ub97c \uc218\ud589\ud55c\ub2e4}\n\n\uac80\uc99d\ub41c \ubd80\ud488\uacfc \uc124\uacc4\ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uae30\ub2a5\uc744 \ubaa8\ub4c8\ub85c \ubd84\ub9ac\ud55c\ub2e4. \uc548\uc804\uad00\ub828 \uc694\uc18c\uc640 \ube44\uc548\uc804\uad00\ub828 \uc694\uc18c\uc758 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc81c\ud55c\ud55c\ub2e4. \uace0\uc7a5\uc744 \uac80\ucd9c\ud558\uba74 \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud558\ub3c4\ub85d \uc124\uacc4\ud55c\ub2e4. \uc628\ub3c4, \uc9c4\ub3d9, EMC \ubc0f \uc804\uc6d0 \uc774\uc0c1\uc744 \uace0\ub824\ud55c\ub2e4. \uc628\ub77c\uc778 \ubcc0\uacbd\uc744 \uc81c\ud55c\ud558\uace0 \uc6b4\uc804\uc790 \uc624\uc870\uc791\uc744 \ubc29\uc9c0\ud55c\ub2e4.\n\n\\subsection{5\ub2e8\uacc4: \uc9c4\ub2e8\uacfc \uace0\uc7a5\ud5c8\uc6a9 \uad6c\uc870\ub97c \uacb0\uc815\ud55c\ub2e4}\n\n\ubaa9\ud45c SIL\uc5d0 \ub530\ub77c Watchdog, \uba54\ubaa8\ub9ac \uac80\uc0ac, I\/O \uc9c4\ub2e8, \uc13c\uc11c \ubc0f \uc561\ucd94\uc5d0\uc774\ud130 \uc9c4\ub2e8\uc744 \uc124\uacc4\ud55c\ub2e4. \uc911\ubcf5\uad6c\uc870\ub97c \uc801\uc6a9\ud560 \uacbd\uc6b0 HFT\uac00 \uc99d\uac00\ud55c\ub2e4. \uadf8\ub7ec\ub098 \ub3d9\uc77c \uc6d0\uc778\uc5d0 \uc758\ud55c \ub3d9\uc2dc\uace0\uc7a5\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ucc44\ub110 \ubd84\ub9ac, \uc804\uc6d0 \ubd84\ub9ac, \ubc30\uc120 \ubd84\ub9ac \ubc0f \ub2e4\uc591\uc131 \uc124\uacc4\ub97c \ud568\uaed8 \uc801\uc6a9\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{6\ub2e8\uacc4: SFF\uc640 HFT\ub85c \uc544\ud0a4\ud14d\ucc98\ub97c \uac80\ud1a0\ud55c\ub2e4}\n\n\uac01 \uc694\uc18c\ub97c Type A \ub610\ub294 Type B\ub85c \ubd84\ub958\ud55c\ub2e4. FMEA \ub610\ub294 \uace0\uc7a5\uc2dc\ud5d8\uc744 \ud1b5\ud574 \uc548\uc804\uce21 \uace0\uc7a5, \uac80\ucd9c\ub41c \uc704\ud5d8\uace0\uc7a5 \ubc0f \ubbf8\uac80\ucd9c \uc704\ud5d8\uace0\uc7a5\uc744 \uad6c\ubd84\ud55c\ub2e4. \uc774\ub97c \uc774\uc6a9\ud558\uc5ec SFF\ub97c \uc0b0\uc815\ud55c\ub2e4. SFF\uc640 HFT \ud45c\ub97c \uc774\uc6a9\ud558\uc5ec \ud574\ub2f9 \uad6c\uc870\uac00 \ubaa9\ud45c SIL\uc744 \uc8fc\uc7a5\ud560 \uc218 \uc788\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4. \uc774\uac83\uc774 Route 1H\uc758 \uae30\ubcf8 \ud750\ub984\uc774\ub2e4.\n\n\ucda9\ubd84\ud558\uace0 \uac80\uc99d\ub41c \ud604\uc7a5 \uace0\uc7a5\ub370\uc774\ud130\uac00 \uc788\ub2e4\uba74 Route 2H\ub97c \uac80\ud1a0\ud560 \uc218 \uc788\ub2e4. \uc774\ub54c \uc81c\uc870\uc0ac \ubcf4\uc99d\ubc18\ud488 \uc790\ub8cc\uac00 \uc544\ub2c8\ub77c \uc2e4\uc81c \uc6b4\uc804\ud658\uacbd\uc5d0\uc11c \uc218\uc9d1\ud55c \ud604\uc7a5\ub370\uc774\ud130\uac00 \ud544\uc694\ud558\ub2e4. \ub370\uc774\ud130\uc758 \uc801\uc6a9\ud658\uacbd, \uace0\uc7a5\ubd84\ub958 \ubc0f \ud1b5\uacc4\uc801 \uc2e0\ub8b0\uc218\uc900\uc744 \uc785\uc99d\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{7\ub2e8\uacc4: PFD \ub610\ub294 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4}\n\n\uc2e0\ub8b0\ub3c4 \ubaa8\ub378\uc744 \uc791\uc131\ud55c\ub2e4. \uc13c\uc11c, \ub85c\uc9c1\uc194\ubc84 \ubc0f \ucd5c\uc885\uc694\uc18c\uc758 \uc704\ud5d8\uace0\uc7a5\ub960\uc744 \ubc18\uc601\ud55c\ub2e4. \uc9c4\ub2e8\uc8fc\uae30, Proof Test \uc8fc\uae30, \uc218\ub9ac\uc2dc\uac04, \uc9c4\ub2e8\ubc94\uc704 \ubc0f CCF\ub97c \ud3ec\ud568\ud55c\ub2e4. \uc800\uc218\uc694 \uae30\ub2a5\uc740 PFD\ub97c \uacc4\uc0b0\ud558\uace0 \uace0\uc218\uc694 \ub610\ub294 \uc5f0\uc18d\uc6b4\uc804 \uae30\ub2a5\uc740 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4. \uacc4\uc0b0\uacb0\uacfc\ub294 SIL \ubc94\uc704\ubfd0 \uc544\ub2c8\ub77c \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \uc124\uc815\ud55c \uac1c\ubcc4 \uc815\ub7c9\ubaa9\ud45c\uc640 \ube44\uad50\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{8\ub2e8\uacc4: \ud1b5\ud569\uc2dc\ud5d8\uacfc Verification\uc744 \uc218\ud589\ud55c\ub2e4}\n\n\uc785\ub825 \uc870\ud569\uc5d0 \ub530\ub978 \ucd9c\ub825\uc751\ub2f5\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \uc785\ub825 \uc601\uc5ed\uc744 \ubd84\ud560\ud558\uace0 \uacbd\uacc4\uac12\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \ube44\uc815\uc0c1 \uc785\ub825\uacfc \uba85\uc138\ub418\uc9c0 \uc54a\uc740 \uc785\ub825\uc5d0 \ub300\ud55c \ub3d9\uc791\ub3c4 \ud655\uc778\ud55c\ub2e4. \ub192\uc740 SIL\uc5d0\uc11c\ub294 \uc6b4\uc804 \uacbd\uacc4\uc5d0\uc11c \uc5ec\ub7ec \uc911\uc694 \ub17c\ub9ac\uac00 \ub3d9\uc2dc\uc5d0 \uc791\ub3d9\ud558\ub294 \uc870\uac74\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \uc2dc\ud5d8\ubc84\uc804, \uc2dc\ud5d8\ub3c4\uad6c, \ud569\uaca9\uae30\uc900, \uacb0\uacfc \ubc0f \ubd88\uc77c\uce58 \uc0ac\ud56d\uc744 \uae30\ub85d\ud55c\ub2e4.\n\n\\subsection{9\ub2e8\uacc4: Validation\uc73c\ub85c \uc804\uccb4 \uc694\uad6c\uc0ac\ud56d\uc744 \ud655\uc778\ud55c\ub2e4}\n\nSRS\uc758 \uac01 \uc694\uad6c\uc0ac\ud56d\uc744 \uacc4\uc0b0\uc11c, \uac80\ud1a0\uc11c \ubc0f \uc2dc\ud5d8\uc131\uc801\uc11c\uc640 \uc5f0\uacb0\ud55c\ub2e4. \uae30\ub2a5\uc2dc\ud5d8, \ud658\uacbd\uc2dc\ud5d8, \uac04\uc12d\uc2dc\ud5d8 \ubc0f \uace0\uc7a5\uc0bd\uc785\uc2dc\ud5d8\uc744 \uc218\ud589\ud55c\ub2e4. \ubc1c\uacac\ub41c \ubb38\uc81c\ub294 \ud604\uc0c1, \uc6d0\uc778, \uc870\uce58 \ubc0f \uc7ac\uc2dc\ud5d8 \uacb0\uacfc\uae4c\uc9c0 \ub2eb\uc544\uc57c \ud55c\ub2e4. Validation\uc740 \uac1c\ubcc4 \uc2dc\ud5d8\uc758 \uc9d1\ud569\uc774 \uc544\ub2c8\ub77c \uc804\uccb4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc5d0 \ub300\ud55c \uc885\ud569 \ud655\uc778\uc774\ub2e4.\n\n\\subsection{10\ub2e8\uacc4: \uc6b4\uc804\uacfc \uc720\uc9c0\ubcf4\uc218\ub85c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4}\n\n\uc6b4\uc804\uc808\ucc28\uc640 \uc815\ube44\uc808\ucc28\ub97c \uba85\ud655\ud788 \ud55c\ub2e4. Proof Test\ub97c \uc815\ud574\uc9c4 \uc8fc\uae30\ub85c \uc218\ud589\ud55c\ub2e4. \uc2e4\uc81c Demand \ud69f\uc218, \uace0\uc7a5, \uc624\ub3d9\uc791, \uc218\ub9ac \ubc0f \uad50\uccb4\uc774\ub825\uc744 \uae30\ub85d\ud55c\ub2e4. \uae30\ub85d\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \uac80\ud1a0\ud558\uc5ec \ucd5c\ucd08 SIL \uac00\uc815\uacfc \uace0\uc7a5\ub960 \uac00\uc815\uc774 \uc801\uc808\ud588\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4. \uc811\uadfc\uad8c\ud55c\uacfc \uc6b4\uc804\uc790 \uad50\uc721\ub3c4 \uad00\ub9ac\ud55c\ub2e4.\n\n\\subsection{11\ub2e8\uacc4: \ubcc0\uacbd\uc744 \ud1b5\uc81c\ud558\uace0 \uc7ac\uac80\uc99d\ud55c\ub2e4}\n\n\ubaa8\ub4e0 \ubcc0\uacbd\uc740 \ud615\uc0c1\uad00\ub9ac \ub300\uc0c1\uc774\ub2e4. \ubcc0\uacbd\uc0ac\uc720\uc640 \uc601\ud5a5\ubd84\uc11d\uc744 \uae30\ub85d\ud55c\ub2e4. \ubcc0\uacbd\ub41c \ubaa8\ub4c8\ubfd0 \uc544\ub2c8\ub77c \uc601\ud5a5\uc744 \ubc1b\ub294 \uc778\ud130\ud398\uc774\uc2a4\uc640 \uad00\ub828 \ubaa8\ub4c8\ub3c4 \uc7ac\uac80\uc99d\ud55c\ub2e4. \ubcc0\uacbd\uc73c\ub85c SRS, \uc2e0\ub8b0\ub3c4 \uacc4\uc0b0, \uc2dc\ud5d8\ubc94\uc704 \ub610\ub294 Safety Manual\uc774 \ub2ec\ub77c\uc9c0\uba74 \uad00\ub828 \ubb38\uc11c\ub97c \ubaa8\ub450 \uac31\uc2e0\ud55c\ub2e4.\n\n\\subsection{12\ub2e8\uacc4: \uc801\ud569\uc131 \uc785\uc99d\uc790\ub8cc\ub97c \uc644\uc131\ud55c\ub2e4}\n\nIEC 61508 \uc694\uad6c\uc0ac\ud56d\ubcc4\ub85c \uc99d\uac70\ubb38\uc11c\ub97c \uc5f0\uacb0\ud55c\ub2e4. \uc99d\uac70\uc5d0\ub294 SRS, \uc124\uacc4\uc11c, FMEA, CCF \ubd84\uc11d\uc11c, PFD\/PFH \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uacc4\ud68d\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, Validation \ubcf4\uace0\uc11c, Safety Manual, \ubcc0\uacbd\uc774\ub825 \ubc0f \uc6b4\uc804\uae30\ub85d\uc774 \ud3ec\ud568\ub41c\ub2e4. \ucd5c\uc885 \ubaa9\uc801\uc740 ``\ud45c\uc900\uc744 \uc801\uc6a9\ud588\ub2e4''\uace0 \uc120\uc5b8\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, \uac01 \uc694\uad6c\uc0ac\ud56d\uc774 \ucda9\uc871\ub418\uc5c8\uc74c\uc744 \ucd94\uc801 \uac00\ub2a5\ud55c \uc790\ub8cc\ub85c \uc785\uc99d\ud558\ub294 \uac83\uc774\ub2e4.\n\n\\begin{keybox}{\ucd5c\uc885 \ud750\ub984 \uc694\uc57d}\n\uc704\ud5d8\ubd84\uc11d\uacfc SIL \uc124\uc815\uc5d0\uc11c \uc2dc\uc791\ud55c\ub2e4. SRS\ub85c \uc548\uc804\uae30\ub2a5\uc744 \uba85\ud655\ud788 \ud55c\ub2e4. \uad6c\uc870\ud654, \ubaa8\ub4c8\ud654, \ubd84\ub9ac, \uc911\ubcf5 \ubc0f \ub2e4\uc591\uc131\uc73c\ub85c \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ubc29\uc5b4\ud55c\ub2e4. SFF\uc640 HFT\ub85c \ud558\ub4dc\uc6e8\uc5b4 \uad6c\uc870\ub97c \uac80\ud1a0\ud55c\ub2e4. PFD \ub610\ub294 PFH\ub85c \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \ubaa9\ud45c\ub97c \ud655\uc778\ud55c\ub2e4. Verification\uacfc Validation\uc73c\ub85c \uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc744 \uc785\uc99d\ud55c\ub2e4. \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218 \ubc0f \ubcc0\uacbd\uad00\ub9ac\ub85c \ub2ec\uc131\ub41c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4.\n\\end{keybox}\n\n\\section*{\ucc38\uace0\ubb38\ud5cc}\n\\addcontentsline{toc}{section}{\ucc38\uace0\ubb38\ud5cc}\n\n\\begin{thebibliography}{9}\n\\bibitem{smith2016}\nDavid J. Smith and Kenneth G. L. Simpson,\n\\textit{The Safety Critical Systems Handbook: A Straightforward Guide to Functional Safety, IEC 61508, IEC 61511 and Related Guidance},\n4th ed., Butterworth-Heinemann, 2016, Chapter 3, pp. 57--78.\n\\end{thebibliography}\n\n\\end{document}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>IEC 61508 Part 2 \uae30\ubc18 \uc548\uc804\uad00\ub828 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc815\ub9ac – \ub2e8\uc77c \ud504\ub808\uc784 Functional Safety Study Note IEC 61508 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{"id":9406,"date":"2026-08-27T18:35:07","date_gmt":"2026-08-27T09:35:07","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=9406"},"modified":"2026-08-27T21:28:13","modified_gmt":"2026-08-27T12:28:13","slug":"the-safety-critical-systems-chapter5","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/the-safety-critical-systems-chapter5\/","title":{"rendered":"The Safety Critical Systems, Chapter3"},"content":{"rendered":"\n\n\n\n \n \n \n IEC 61508 Part 2 \uae30\ubc18 \uc548\uc804\uad00\ub828 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc815\ub9ac – \ub2e8\uc77c \ud504\ub808\uc784<\/title>\n <style>\n :root {\n --navy: #1c385c;\n --navy-2: #294f7d;\n --blue: #e6edf5;\n --blue-2: #f2f6fa;\n --ink: #222831;\n --muted: #5e6773;\n --line: #d7dee7;\n --paper: #ffffff;\n --bg: #f4f6f8;\n --accent: #b56a18;\n --shadow: 0 8px 24px rgba(25, 45, 72, 0.08);\n --radius: 14px;\n }\n\n * { box-sizing: border-box; }\n html { scroll-behavior: smooth; }\n body {\n margin: 0;\n color: var(--ink);\n background: var(--bg);\n font-family: \"Noto Sans KR\", \"Apple SD Gothic Neo\", \"Malgun Gothic\", Arial, sans-serif;\n line-height: 1.75;\n word-break: keep-all;\n overflow-x: hidden;\n }\n a { color: var(--navy-2); }\n .page {\n width: 100%;\n max-width: 1600px;\n margin: 0 auto;\n padding: 28px 32px 72px;\n }\n .hero {\n position: relative;\n overflow: hidden;\n color: #fff;\n background: linear-gradient(135deg, #182f4d 0%, #244d7d 72%, #315f94 100%);\n border-radius: 20px;\n padding: 48px 52px;\n box-shadow: var(--shadow);\n }\n .hero::after {\n content: \"\";\n position: absolute;\n right: -120px;\n top: -120px;\n width: 340px;\n height: 340px;\n border-radius: 50%;\n background: rgba(255, 255, 255, 0.07);\n }\n .eyebrow {\n margin: 0 0 10px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n color: #cddcf0;\n font-size: 0.88rem;\n }\n h1 {\n margin: 0;\n max-width: 850px;\n font-size: clamp(2rem, 4vw, 3.2rem);\n line-height: 1.25;\n letter-spacing: -0.035em;\n }\n .subtitle {\n margin: 18px 0 0;\n color: #e7eef7;\n font-size: 1.05rem;\n }\n .hero-actions { margin-top: 26px; 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font-size: 0.96rem; }\n .toc a { color: var(--ink); text-decoration: none; }\n .toc a:hover { color: var(--navy-2); text-decoration: underline; }\n\n main {\n width: 100%;\n min-width: 0;\n background: var(--paper);\n border: 1px solid var(--line);\n border-radius: var(--radius);\n box-shadow: var(--shadow);\n padding: 34px clamp(22px, 4vw, 48px) 52px;\n }\n section { scroll-margin-top: 18px; }\n h2.section-title {\n margin: 0 0 24px;\n padding-bottom: 12px;\n color: var(--navy);\n border-bottom: 2px solid var(--navy);\n font-size: 1.8rem;\n letter-spacing: -0.025em;\n }\n h3 {\n margin: 34px 0 14px;\n color: var(--navy-2);\n font-size: 1.28rem;\n letter-spacing: -0.02em;\n }\n p { margin: 0 0 14px; }\n\n .table-wrap {\n overflow-x: auto;\n margin: 14px 0 24px;\n border: 1px solid var(--line);\n border-radius: 12px;\n }\n table {\n width: 100%;\n border-collapse: collapse;\n min-width: 0;\n background: #fff;\n }\n th, td {\n padding: 12px 14px;\n border-bottom: 1px solid var(--line);\n vertical-align: top;\n text-align: left;\n }\n thead th {\n background: var(--navy);\n color: #fff;\n font-weight: 700;\n }\n tbody tr:last-child td { border-bottom: 0; }\n tbody tr:nth-child(even) { background: #fafbfd; }\n td:first-child { font-weight: 700; color: #243d5b; }\n\n .keybox, .note {\n margin: 22px 0;\n padding: 20px 22px;\n border-radius: 12px;\n }\n .keybox {\n background: var(--blue);\n border: 1px solid #9fb6cf;\n border-left: 5px solid var(--navy);\n }\n .keybox h4 { margin: 0 0 8px; color: var(--navy); font-size: 1.05rem; }\n .note { background: #f7f8fa; border: 1px solid var(--line); }\n ul, ol { padding-left: 1.4rem; }\n li { margin: 5px 0; }\n\n .flow {\n display: grid;\n grid-template-columns: repeat(4, minmax(130px, 1fr));\n gap: 18px 30px;\n margin: 24px 0 30px;\n counter-reset: flow;\n }\n .flow .node {\n position: relative;\n min-height: 92px;\n display: flex;\n align-items: center;\n justify-content: center;\n text-align: center;\n padding: 14px;\n background: var(--blue);\n border: 2px solid var(--navy);\n border-radius: 12px;\n font-weight: 700;\n color: #183553;\n }\n .flow .node:not(:nth-child(4n))::after {\n content: \"\u2192\";\n position: absolute;\n right: -25px;\n color: var(--muted);\n font-size: 1.35rem;\n }\n .flow .node:nth-child(5)::before {\n content: \"\u2193\";\n position: absolute;\n top: -29px;\n left: 50%;\n transform: translateX(-50%);\n color: var(--muted);\n font-size: 1.35rem;\n }\n .formula {\n margin: 22px auto;\n max-width: 780px;\n text-align: center;\n padding: 18px 20px;\n background: #fffaf3;\n border: 1px solid #e0c39c;\n border-radius: 12px;\n font-family: \"Times New Roman\", serif;\n font-size: 1.2rem;\n font-weight: 700;\n }\n\n .timeline {\n position: relative;\n margin: 10px 0 0;\n padding-left: 34px;\n }\n .timeline::before {\n content: \"\";\n position: absolute;\n left: 12px;\n top: 6px;\n bottom: 8px;\n width: 3px;\n background: #bdcadd;\n border-radius: 2px;\n }\n .step {\n position: relative;\n margin: 0 0 24px;\n padding: 18px 20px;\n background: var(--blue-2);\n border: 1px solid var(--line);\n border-radius: 12px;\n }\n .step::before {\n content: attr(data-step);\n position: absolute;\n left: -35px;\n top: 20px;\n width: 26px;\n height: 26px;\n display: grid;\n place-items: center;\n border-radius: 50%;\n color: #fff;\n background: var(--navy);\n font-size: 0.8rem;\n font-weight: 800;\n border: 3px solid #fff;\n box-shadow: 0 0 0 1px var(--navy);\n }\n .step h3 { margin: 0 0 8px; font-size: 1.18rem; }\n .step p:last-child { margin-bottom: 0; }\n\n .reference {\n margin-top: 44px;\n padding-top: 20px;\n border-top: 2px solid var(--line);\n color: var(--muted);\n font-size: 0.92rem;\n }\n footer {\n max-width: 1240px;\n margin: 20px auto 0;\n padding: 0 24px 48px;\n color: var(--muted);\n text-align: center;\n font-size: 0.86rem;\n }\n\n @media (max-width: 940px) {\n .toc ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }\n .flow { grid-template-columns: repeat(2, minmax(140px, 1fr)); }\n .flow .node::after, .flow .node::before { display: none; }\n }\n @media (max-width: 600px) {\n .page { padding: 14px 10px 40px; }\n .hero { padding: 34px 24px; border-radius: 14px; }\n main { padding: 26px 17px 38px; }\n .toc ol { grid-template-columns: 1fr; }\n .flow { grid-template-columns: 1fr; }\n .timeline { padding-left: 30px; }\n .step::before { left: -32px; }\n }\n\n @media print {\n @page { size: A4; margin: 16mm; }\n body { background: #fff; font-size: 10.5pt; }\n .page { max-width: none; padding: 0; }\n .hero { color: #000; background: #fff; border: 1px solid #777; box-shadow: none; padding: 20px; }\n .hero::after, .hero-actions, .toc, footer { display: none !important; }\n .subtitle, .eyebrow { color: #333; }\n .summary, main { box-shadow: none; }\n .layout { display: block; }\n .toc { display: none !important; }\n main { border: 0; padding: 0; }\n h2.section-title { break-before: page; }\n main > section:first-child h2.section-title { break-before: auto; }\n .table-wrap { overflow: visible; break-inside: avoid; }\n table { min-width: 0; font-size: 8.8pt; }\n th, td { padding: 6px 7px; }\n .step, .keybox, .note, .formula { break-inside: avoid; }\n a { color: inherit; text-decoration: none; }\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"page\">\n <header class=\"hero\">\n <p class=\"eyebrow\">Functional Safety Study Note<\/p>\n <h1>IEC 61508 Part 2 \uae30\ubc18<br>\uc548\uc804\uad00\ub828 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc815\ub9ac<\/h1>\n <p class=\"subtitle\"><em>The Safety Critical Systems Handbook<\/em>, Chapter 3 \ud559\uc2b5 \ub178\ud2b8<\/p>\n <div class=\"hero-actions\">\n <a class=\"button\" href=\"#keywords\">\ubcf8\ubb38 \uc2dc\uc791<\/a>\n <button class=\"button\" type=\"button\" onclick=\"window.print()\">\uc778\uc1c4 \/ PDF \uc800\uc7a5<\/button>\n <\/div>\n <\/header>\n\n <div class=\"summary\">\n Chapter 3\uc740 IEC 61508 Part 2\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \uc124\uba85\ud55c\ub2e4. \ub300\uc0c1\uc740 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc758 \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc124\uacc4\uc774\ub2e4. \ud575\uc2ec\uc740 \ubaa9\ud45c SIL\uc744 \ub9cc\uc871\ud558\ub294 \uc124\uacc4\ub97c \uc218\ud589\ud558\uace0, \uadf8 \uacb0\uacfc\ub97c \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, \uac80\ud1a0\uae30\ub85d \ubc0f \uc6b4\uc804\uae30\ub85d\uc73c\ub85c \uc785\uc99d\ud558\ub294 \uac83\uc774\ub2e4.\n <\/div>\n\n <div class=\"layout\">\n <nav class=\"toc\" aria-label=\"\ubaa9\ucc28\">\n <h2>\ubaa9\ucc28<\/h2>\n <ol>\n <li><a href=\"#keywords\">\ud0a4\uc6cc\ub4dc \uc815\uc758<\/a><\/li>\n <li><a href=\"#relationships\">\ud0a4\uc6cc\ub4dc \uac04 \uad00\uacc4<\/a><\/li>\n <li><a href=\"#flow-explanation\">\ud750\ub984\uc5d0 \ub9de\ucd98 \uc124\uba85<\/a><\/li>\n <li><a href=\"#references\">\ucc38\uace0\ubb38\ud5cc<\/a><\/li>\n <\/ol>\n <\/nav>\n\n <main>\n <section id=\"keywords\">\n <h2 class=\"section-title\">1. \ud0a4\uc6cc\ub4dc \uc815\uc758<\/h2>\n\n <h3>1.1 \uc801\uc6a9 \ubc94\uc704\uc640 \uae30\ubcf8 \uac1c\ub150<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>IEC 61508 Part 2<\/td><td>\uc548\uc804\uad00\ub828 \uc804\uae30\u00b7\uc804\uc790\u00b7\ud504\ub85c\uadf8\ub7a8 \uac00\ub2a5 \uc804\uc790 \uc2dc\uc2a4\ud15c\uc758 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc694\uad6c\uc0ac\ud56d\uc744 \ub2e4\ub8ec\ub2e4. \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c \uc694\uad6c\uc0ac\ud56d\uc740 Part 3\uc5d0\uc11c \ub2e4\ub8ec\ub2e4.<\/td><\/tr>\n <tr><td>E\/E\/PE \uc2dc\uc2a4\ud15c<\/td><td>Electrical, Electronic, Programmable Electronic System\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc804\uae30, \uc804\uc790 \ub610\ub294 \ud504\ub85c\uadf8\ub7a8 \uac00\ub2a5 \uc804\uc790\uae30\uc220\uc744 \uc774\uc6a9\ud558\uc5ec \uc548\uc804\uae30\ub2a5\uc744 \uc218\ud589\ud558\ub294 \uc2dc\uc2a4\ud15c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>EUC<\/td><td>Equipment Under Control\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uc2dc\uc2a4\ud15c\uc774 \uac10\uc2dc\ud558\uac70\ub098 \ubcf4\ud638\ud558\ub294 \ub300\uc0c1 \uc124\ube44\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc548\uc804\uae30\ub2a5<\/td><td>\ud2b9\uc815 \uc704\ud5d8\uacfc \uad00\ub828\ud558\uc5ec EUC\ub97c \uc548\uc804\uc0c1\ud0dc\ub85c \uc720\uc9c0\ud558\uac70\ub098 \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud558\ub294 \uae30\ub2a5\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc548\uc804\uc0c1\ud0dc<\/td><td>\uc704\ud5d8\uc774 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc218\uc900\uc73c\ub85c \uac10\uc18c\ub41c \uc124\ube44 \uc0c1\ud0dc\uc774\ub2e4. \uacf5\uc815 \uc815\uc9c0, \ubc38\ube0c \ucc28\ub2e8, \uc5d0\ub108\uc9c0 \ucc28\ub2e8 \ub4f1\uc774 \ud574\ub2f9\ud560 \uc218 \uc788\ub2e4.<\/td><\/tr>\n <tr><td>SIL<\/td><td>Safety Integrity Level\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uae30\ub2a5\uc5d0 \uc694\uad6c\ub418\ub294 \ubb34\uacb0\uc131 \uc218\uc900\uc774\ub2e4. SIL\uc774 \ub192\uc544\uc9c8\uc218\ub85d \uc124\uacc4, \ub3c5\ub9bd\uc131, \uac80\uc99d \ubc0f \ubb38\uc11c\ud654 \uc218\uc900\uc774 \uac15\ud654\ub41c\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>1.2 \uc0dd\uba85\uc8fc\uae30\uc640 \uc694\uad6c\uc0ac\ud56d<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\uc548\uc804 \uc0dd\uba85\uc8fc\uae30<\/td><td>\uc694\uad6c\uc0ac\ud56d \uc815\uc758, \uc124\uacc4, \uc81c\uc791, \uc124\uce58, \uc2dc\ud5d8, \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218, \ubcc0\uacbd \ubc0f \ud3d0\uae30\uae4c\uc9c0 \uc548\uc804\uc744 \uad00\ub9ac\ud558\ub294 \uc804\uccb4 \uc808\ucc28\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uae30\ub2a5\uc548\uc804\uad00\ub9ac<\/td><td>Functional Safety Management\uc758 \uc758\ubbf8\uc774\ub2e4. \uc5ed\ud560, \ucc45\uc784, \uc5ed\ub7c9, \ubb38\uc11c, \uac80\ud1a0, \uac10\uc0ac \ubc0f \ud615\uc0c1\uad00\ub9ac\ub97c \uccb4\uacc4\uc801\uc73c\ub85c \uc6b4\uc601\ud558\ub294 \uad00\ub9ac\uccb4\uacc4\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Quality and Safety Plan<\/td><td>\ud504\ub85c\uc81d\ud2b8\uc758 \uae30\ub2a5\uc548\uc804 \ubaa9\ud45c, \uc870\uc9c1, \ucc45\uc784, \ubb38\uc11c\uccb4\uacc4, \uac80\uc99d\uacc4\ud68d \ubc0f \ud655\uc778\uacc4\ud68d\uc744 \uc815\uc758\ud558\ub294 \ucd5c\uc0c1\uc704 \uacc4\ud68d\uc11c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>SRS<\/td><td>Safety Requirements Specification\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uae30\ub2a5, SIL, \uc751\ub2f5\uc2dc\uac04, \uc548\uc804\uc0c1\ud0dc, \uc6b4\uc804\ubaa8\ub4dc, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f \uc2dc\ud5d8\uc870\uac74\uc744 \uba85\ud655\ud558\uace0 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \ud615\ud0dc\ub85c \uc815\uc758\ud55c \ubb38\uc11c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\ucd94\uc801\uc131<\/td><td>\uc694\uad6c\uc0ac\ud56d\uc774 \uc124\uacc4, \uad6c\ud604, \uc2dc\ud5d8 \ubc0f \uacb0\uacfc\ubcf4\uace0\uc11c\uc640 \uc5f0\uacb0\ub418\ub294 \uc131\uc9c8\uc774\ub2e4. \uc694\uad6c\uc0ac\ud56d \ub204\ub77d\uacfc \ubbf8\uac80\uc99d \ud56d\ubaa9\uc744 \ubc29\uc9c0\ud55c\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>1.3 \uc124\uacc4\uc640 \ub3c5\ub9bd\uc131<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\uad6c\uc870\ud654 \uc124\uacc4<\/td><td>\uae30\ub2a5\uc744 \uba85\ud655\ud788 \ubd84\ud560\ud558\uace0 \uacc4\uce35\uacfc \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc2dd\ubcc4\ud560 \uc218 \uc788\ub3c4\ub85d \uc124\uacc4\ud558\ub294 \ubc29\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\ubaa8\ub4c8\ud654<\/td><td>\uc2dc\uc2a4\ud15c\uc744 \ub3c5\ub9bd\uc801\uc778 \uae30\ub2a5 \ub2e8\uc704\ub85c \ubd84\ub9ac\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \uacb0\ud568\uc758 \uc804\ud30c\ub97c \uc81c\ud55c\ud558\uace0 \uc2dc\ud5d8\uacfc \ubcc0\uacbd\uc744 \uc6a9\uc774\ud558\uac8c \ud55c\ub2e4.<\/td><\/tr>\n <tr><td>\ubd84\ub9ac<\/td><td>EUC, \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c, \uc548\uc804\uc2dc\uc2a4\ud15c \ubc0f \uc911\ubcf5 \ucc44\ub110 \uc0ac\uc774\uc758 \ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801\u00b7\ub370\uc774\ud130\uc801 \ub3c5\ub9bd\uc744 \ud655\ubcf4\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc911\ubcf5\uc131<\/td><td>\ub3d9\uc77c\ud55c \uc548\uc804\uae30\ub2a5\uc744 \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774 \uc218\ud589\ud558\ub3c4\ub85d \uad6c\uc131\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4. \ud558\ub098\uc758 \uace0\uc7a5\uc774 \uc804\uccb4 \uae30\ub2a5 \uc0c1\uc2e4\ub85c \uc774\uc5b4\uc9c0\ub294 \uac83\uc744 \ubc29\uc9c0\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>\ub2e4\uc591\uc131<\/td><td>\uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \uc124\uacc4 \ub610\ub294 \uad6c\ud604\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4. \ub3d9\uc77c \uc6d0\uc778\uc73c\ub85c \uc911\ubcf5 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud558\ub294 \uac83\uc744 \ubc29\uc9c0\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>CCF<\/td><td>Common Cause Failure\uc758 \uc57d\uc5b4\uc774\ub2e4. \uacf5\ud1b5\ub41c \uc6d0\uc778\uc73c\ub85c \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uace0\uc7a5 \ub098\ub294 \ud604\uc0c1\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc9c4\ub2e8\ubc94\uc704<\/td><td>Diagnostic Coverage\uc758 \uc758\ubbf8\uc774\ub2e4. \uc704\ud5d8\uace0\uc7a5 \uc911 \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Watchdog<\/td><td>CPU \uc815\uc9c0, \ud504\ub85c\uadf8\ub7a8 \uc21c\uc11c \uc774\uc0c1 \ub610\ub294 \uc2e4\ud589\uc2dc\uac04 \uc774\uc0c1\uc744 \uac10\uc2dc\ud558\ub294 \uae30\ubcf8 \uc9c4\ub2e8\uae30\ub2a5\uc774\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>1.4 \ud558\ub4dc\uc6e8\uc5b4 \uc548\uc804\ubb34\uacb0\uc131 \ud3c9\uac00<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5<\/td><td>\ubd80\ud488 \uc5f4\ud654\ub098 \ubb3c\ub9ac\uc801 \uc190\uc0c1\ucc98\ub7fc \uace0\uc7a5\ub960\ub85c \uc815\ub7c9\ud654\ud560 \uc218 \uc788\ub294 \uace0\uc7a5\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uccb4\uacc4\uc801 \uace0\uc7a5<\/td><td>\uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \uc81c\uc791, \ubcc0\uacbd \ub610\ub294 \uc6b4\uc804\uc808\ucc28\uc758 \uacb0\ud568\ucc98\ub7fc \ud2b9\uc815 \uc870\uac74\uc5d0\uc11c \ubc18\ubcf5\ub418\ub294 \uace0\uc7a5\uc774\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uace0\uc7a5\ub960\ub85c \uc9c1\uc811 \uc608\uce21\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/td><\/tr>\n <tr><td>SFF<\/td><td>Safe Failure Fraction\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uce21 \uace0\uc7a5\uacfc \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4.<\/td><\/tr>\n <tr><td>HFT<\/td><td>Hardware Fault Tolerance\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc2dc\uc2a4\ud15c\uc774 \uc548\uc804\uae30\ub2a5\uc744 \uc0c1\uc2e4\ud558\uc9c0 \uc54a\uace0 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \uac1c\uc218\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Type A \uc694\uc18c<\/td><td>\uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5 \uc2dc \ub3d9\uc791 \ubc0f \uace0\uc7a5\ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \uc54c\ub824\uc9c4 \ube44\uad50\uc801 \ub2e8\uc21c\ud55c \uc694\uc18c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Type B \uc694\uc18c<\/td><td>\ubcf5\uc7a1\ud55c \uc804\uc790\uc7a5\uce58\ucc98\ub7fc \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5 \uc2dc \ub3d9\uc791 \ub610\ub294 \uace0\uc7a5\ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \uc54c\ub824\uc9c0\uc9c0 \uc54a\uc740 \uc694\uc18c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>PFD<\/td><td>Probability of Failure on Demand\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc800\uc218\uc694 \uc548\uc804\uae30\ub2a5\uc774 \uc694\uad6c\ub420 \ub54c \uc2e4\ud328\ud560 \ud3c9\uade0 \ud655\ub960\uc774\ub2e4.<\/td><\/tr>\n <tr><td>PFH<\/td><td>Probability of dangerous Failure per Hour\uc758 \uc758\ubbf8\uc774\ub2e4. \uace0\uc218\uc694 \ub610\ub294 \uc5f0\uc18d\uc6b4\uc804 \uc548\uc804\uae30\ub2a5\uc758 \uc2dc\uac04\ub2f9 \uc704\ud5d8\uace0\uc7a5 \ube48\ub3c4\uc774\ub2e4.<\/td><\/tr>\n <tr><td>FMEA<\/td><td>Failure Mode and Effects Analysis\uc758 \uc57d\uc5b4\uc774\ub2e4. \ubd80\ud488\ubcc4 \uace0\uc7a5\ubaa8\ub4dc\uc640 \uc2dc\uc2a4\ud15c \uc601\ud5a5\uc744 \ubd84\uc11d\ud558\ub294 \uae30\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>FTA<\/td><td>Fault Tree Analysis\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc0c1\uc704 \uc704\ud5d8\uc0ac\uac74\uc758 \uc6d0\uc778\uc744 \ub17c\ub9ac\uc801\uc73c\ub85c \uc804\uac1c\ud558\ub294 \uae30\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Proof Test<\/td><td>\uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \ubc1c\uacac\ub418\uc9c0 \uc54a\ub294 \uc7a0\uc7ac \uc704\ud5d8\uace0\uc7a5\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \ud655\uc778\ud558\ub294 \uc2dc\ud5d8\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Route 1H<\/td><td>SFF\uc640 HFT\uc5d0 \ub530\ub978 \uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d\uc744 \uc801\uc6a9\ud558\uc5ec \ucd5c\ub300 SIL\uc744 \ud310\ub2e8\ud558\ub294 \ubc29\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Route 2H<\/td><td>\ucda9\ubd84\ud558\uace0 \uac80\uc99d\ub41c \ud604\uc7a5 \uace0\uc7a5\ub370\uc774\ud130\ub97c \uc774\uc6a9\ud558\uc5ec \ud558\ub4dc\uc6e8\uc5b4 \uc544\ud0a4\ud14d\ucc98 \uc801\ud569\uc131\uc744 \uc8fc\uc7a5\ud558\ub294 \ub300\uc548 \uacbd\ub85c\uc774\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>1.5 \uc2dc\ud5d8, \ud655\uc778 \ubc0f \uc99d\uac70<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\ud0a4\uc6cc\ub4dc<\/th><th>\uc815\uc758<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>Verification<\/td><td>\uac01 \uc0dd\uba85\uc8fc\uae30 \ub2e8\uacc4\uc758 \uc0b0\ucd9c\ubb3c\uc774 \uc774\uc804 \ub2e8\uacc4\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \uc62c\ubc14\ub974\uac8c \ub9cc\uc871\ud558\ub294\uc9c0 \uac80\ud1a0\ud558\uace0 \uc2dc\ud5d8\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \u201c\uc124\uacc4\ub97c \uc62c\ubc14\ub974\uac8c \uad6c\ud604\ud588\ub294\uac00\u201d\ub97c \ud655\uc778\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>Validation<\/td><td>\uc644\uc131\ub41c \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc774 \uc2e4\uc81c \uc0ac\uc6a9\ud658\uacbd\uc5d0\uc11c \uc804\uccb4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 \ub9cc\uc871\ud558\ub294\uc9c0 \ud655\uc778\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \u201c\ud544\uc694\ud55c \uc548\uc804\uc2dc\uc2a4\ud15c\uc744 \ub9cc\ub4e4\uc5c8\ub294\uac00\u201d\ub97c \ud655\uc778\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>Safety Manual<\/td><td>\uc548\uc804\uad00\ub828 \uc7a5\uce58\uc758 \uae30\ub2a5, \uad6c\uc131, \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5\ub960, \uc9c4\ub2e8\ubc94\uc704, HFT, \uc0ac\uc6a9\uc81c\ud55c \ubc0f Proof Test \uc870\uac74\uc744 \uc81c\uacf5\ud558\ub294 \ubb38\uc11c\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc601\ud5a5\ubd84\uc11d<\/td><td>\ubcc0\uacbd\uc774 \uc548\uc804\uae30\ub2a5, \uc778\ud130\ud398\uc774\uc2a4, \uc2dc\ud5d8\ubc94\uc704 \ubc0f \uae30\uc874 \uac80\uc99d\uacb0\uacfc\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5\uc744 \ud3c9\uac00\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4.<\/td><\/tr>\n <tr><td>Proven in Use<\/td><td>\uc720\uc0ac\ud55c \ud658\uacbd\uacfc \uc6a9\ub3c4\uc5d0\uc11c \ucd95\uc801\ub41c \ucda9\ubd84\ud55c \ud604\uc7a5 \uc6b4\uc804 \ubc0f \uace0\uc7a5\ub370\uc774\ud130\ub97c \uc774\uc6a9\ud558\uc5ec \uc801\ud569\uc131\uc744 \uc8fc\uc7a5\ud558\ub294 \ubc29\ubc95\uc774\ub2e4.<\/td><\/tr>\n <tr><td>\uc801\ud569\uc131 \uc785\uc99d<\/td><td>IEC 61508\uc758 \uac01 \uc694\uad6c\uc0ac\ud56d\uacfc \uc774\ub97c \ucda9\uc871\ud558\ub294 \uc0ac\uc591\uc11c, \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, \uac80\ud1a0\uc11c \ubc0f \uc6b4\uc804\uae30\ub85d\uc744 \uc5f0\uacb0\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n <\/section>\n\n <section id=\"relationships\">\n <h2 class=\"section-title\">2. \ud0a4\uc6cc\ub4dc \uac04 \uad00\uacc4 \uc815\ub9ac<\/h2>\n\n <h3>2.1 \uc804\uccb4 \uad00\uacc4<\/h3>\n <div class=\"flow\" aria-label=\"\uae30\ub2a5\uc548\uc804 \ud750\ub984\ub3c4\">\n <div class=\"node\">\uc704\ud5d8\ubd84\uc11d<br>\ubc0f SIL \ubaa9\ud45c<\/div>\n <div class=\"node\">SRS<br>\uc548\uc804\uae30\ub2a5 \uc815\uc758<\/div>\n <div class=\"node\">\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654<br>\ubd84\ub9ac\u00b7\ub2e4\uc591\uc131<\/div>\n <div class=\"node\">SFF\u00b7HFT<br>\uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d<\/div>\n <div class=\"node\">PFD\u00b7PFH<br>\uc815\ub7c9\ud3c9\uac00<\/div>\n <div class=\"node\">\ud1b5\ud569\uc2dc\ud5d8<br>Verification<\/div>\n <div class=\"node\">Validation<br>\uc694\uad6c\uc0ac\ud56d \uc885\ud569\ud655\uc778<\/div>\n <div class=\"node\">\uc6b4\uc804\u00b7\uc815\ube44<br>Proof Test\u00b7\uc99d\uac70<\/div>\n <\/div>\n\n <div class=\"keybox\">\n <h4>\uad00\uacc4\uc758 \ud575\uc2ec<\/h4>\n <ul>\n <li>SIL\uc740 \ucd9c\ubc1c\uc810\uc774\ub2e4. SIL\uc740 \uc548\uc804\uae30\ub2a5\ubcc4 \uc694\uad6c\uc218\uc900\uc744 \uacb0\uc815\ud55c\ub2e4.<\/li>\n <li>SRS\ub294 SIL\uc744 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \uc694\uad6c\uc0ac\ud56d\uc73c\ub85c \ubcc0\ud658\ud55c\ub2e4.<\/li>\n <li>\uc124\uacc4\uae30\ubc95\uc740 \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uc904\uc778\ub2e4.<\/li>\n <li>SFF\uc640 HFT\ub294 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \ud558\ub4dc\uc6e8\uc5b4 \uad6c\uc870\ub97c \uc81c\ud55c\ud55c\ub2e4.<\/li>\n <li>PFD \ub610\ub294 PFH\ub294 \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\ub7c9 \ubaa9\ud45c \ub2ec\uc131 \uc5ec\ubd80\ub97c \ud310\ub2e8\ud55c\ub2e4.<\/li>\n <li>Verification\uacfc Validation\uc740 \uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc744 \uc2dc\ud5d8\uacfc \uae30\ub85d\uc73c\ub85c \ud655\uc778\ud55c\ub2e4.<\/li>\n <li>\uc6b4\uc804\u00b7\uc815\ube44\uc640 \ubcc0\uacbd\uad00\ub9ac\ub294 \ub2ec\uc131\ub41c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc218\uba85\uc8fc\uae30 \ub3d9\uc548 \uc720\uc9c0\ud55c\ub2e4.<\/li>\n <\/ul>\n <\/div>\n\n <h3>2.2 \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc758 \uad00\uacc4<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\uad6c\ubd84<\/th><th>\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5<\/th><th>\uccb4\uacc4\uc801 \uace0\uc7a5<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\ubc1c\uc0dd \uc6d0\uc778<\/td><td>\ubd80\ud488 \uc5f4\ud654, \ubb3c\ub9ac\uc801 \uc190\uc0c1, \uc6b0\ubc1c\uc801 \uace0\uc7a5<\/td><td>\uc694\uad6c\uc0ac\ud56d \uc624\ub958, \uc124\uacc4 \uacb0\ud568, \uc81c\uc791 \uc624\ub958, \ubcc0\uacbd \uc624\ub958, \uc6b4\uc804\uc808\ucc28 \uc624\ub958<\/td><\/tr>\n <tr><td>\ud3c9\uac00 \ubc29\ubc95<\/td><td>\uace0\uc7a5\ub960, PFD, PFH, \uc2e0\ub8b0\ub3c4 \ubaa8\ub378, FMEA, FTA<\/td><td>\uc0dd\uba85\uc8fc\uae30 \uad00\ub9ac, \uc124\uacc4\ud45c\uc900, \ub3c5\ub9bd\uac80\ud1a0, \uc2dc\ud5d8, \ud615\uc0c1\uad00\ub9ac, \uc5ed\ub7c9\uad00\ub9ac<\/td><\/tr>\n <tr><td>\uc8fc\uc694 \ud0a4\uc6cc\ub4dc<\/td><td>SFF, HFT, \uc9c4\ub2e8\ubc94\uc704, Proof Test, CCF<\/td><td>SRS, \uad6c\uc870\ud654 \uc124\uacc4, \ubaa8\ub4c8\ud654, \ubd84\ub9ac, \ub2e4\uc591\uc131, Verification<\/td><\/tr>\n <tr><td>\ud310\uc815 \ubc29\uc2dd<\/td><td>\uc815\ub7c9\uc801 \ubaa9\ud45c\uc640 \ube44\uad50<\/td><td>SIL\uc5d0 \ub300\uc751\ud558\ub294 \uc808\ucc28\uc640 \uae30\ubc95\uc758 \uc5c4\uaca9\uc131\uc73c\ub85c \ud310\ub2e8<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n <div class=\"note\">\ubaa9\ud45c SIL \ub2ec\uc131\uc740 \ud558\ub098\uc758 \uacc4\uc0b0\uc73c\ub85c \uacb0\uc815\ub418\uc9c0 \uc54a\ub294\ub2e4. \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\ub7c9\ud3c9\uac00\uc640 \uccb4\uacc4\uc801 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\uc131\uc801 \ubc29\uc5b4\uac00 \ub3d9\uc2dc\uc5d0 \ud544\uc694\ud558\ub2e4.<\/div>\n\n <h3>2.3 SFF, HFT, PFD\/PFH\uc758 \uad00\uacc4<\/h3>\n <ol>\n <li><strong>SFF<\/strong>\ub294 \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uce21 \uace0\uc7a5\uacfc \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc744 \ub098\ud0c0\ub0b8\ub2e4.<\/li>\n <li><strong>HFT<\/strong>\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc744 \uba87 \uac1c\uae4c\uc9c0 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b8\ub2e4.<\/li>\n <li><strong>SFF\uc640 HFT<\/strong>\ub294 \ud574\ub2f9 \uad6c\uc870\uc5d0\uc11c \uc8fc\uc7a5\ud560 \uc218 \uc788\ub294 \ucd5c\ub300 SIL\uc744 \uc81c\ud55c\ud55c\ub2e4.<\/li>\n <li><strong>PFD \ub610\ub294 PFH<\/strong>\ub294 \uc120\ud0dd\ud55c \uad6c\uc870\uc758 \uc2e4\uc81c \uc704\ud5d8\uace0\uc7a5 \ud655\ub960 \ub610\ub294 \ube48\ub3c4\ub97c \uacc4\uc0b0\ud55c\ub2e4.<\/li>\n <li>\uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d\uc744 \ub9cc\uc871\ud558\ub354\ub77c\ub3c4 PFD\/PFH \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\uc9c0 \ubabb\ud558\uba74 \uc124\uacc4\ub294 \ubd80\uc801\ud569\ud558\ub2e4.<\/li>\n <li>PFD\/PFH \uacc4\uc0b0\uac12\uc774 \ucda9\ubd84\ud788 \ub0ae\ub354\ub77c\ub3c4 SFF\/HFT \uc81c\uc57d\uc744 \ucda9\uc871\ud558\uc9c0 \ubabb\ud558\uba74 \ud574\ub2f9 SIL\uc744 \uc8fc\uc7a5\ud560 \uc218 \uc5c6\ub2e4.<\/li>\n <\/ol>\n <div class=\"formula\">SIL \uc801\ud569\uc131 = \uc544\ud0a4\ud14d\ucc98 \uc801\ud569\uc131(SFF\/HFT) + \uc815\ub7c9 \uc801\ud569\uc131(PFD\/PFH) + \uccb4\uacc4\uc801 \uace0\uc7a5 \ubc29\uc5b4<\/div>\n\n <h3>2.4 \uc911\ubcf5\uc131, \ub2e4\uc591\uc131, \ubd84\ub9ac \ubc0f CCF\uc758 \uad00\uacc4<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\uad00\uacc4<\/th><th>\uc124\uba85<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\uc911\ubcf5\uc131 \u2192 HFT \uc99d\uac00<\/td><td>\ud558\ub098\uc758 \ucc44\ub110\uc774 \uace0\uc7a5 \ub098\ub3c4 \ub2e4\ub978 \ucc44\ub110\uc774 \uc548\uc804\uae30\ub2a5\uc744 \uc720\uc9c0\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>\uc911\ubcf5\uc131 \u2260 CCF \uc81c\uac70<\/td><td>\ub3d9\uc77c \uc804\uc6d0, \ub3d9\uc77c \ud658\uacbd, \ub3d9\uc77c \uc124\uacc4 \uc624\ub958\uac00 \uc788\uc73c\uba74 \ubaa8\ub4e0 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4.<\/td><\/tr>\n <tr><td>\ub2e4\uc591\uc131 \u2192 CCF \uac10\uc18c<\/td><td>\uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \ubd80\ud488 \ub610\ub294 \ub17c\ub9ac\ub97c \uc801\uc6a9\ud558\uc5ec \ub3d9\uc77c \uc6d0\uc778\uc5d0 \uc758\ud55c \ub3d9\uc2dc\uace0\uc7a5\uc744 \uc904\uc778\ub2e4.<\/td><\/tr>\n <tr><td>\ubd84\ub9ac \u2192 \ub3c5\ub9bd\uc131 \uc99d\uac00<\/td><td>\ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801\u00b7\ub370\uc774\ud130\uc801 \uac04\uc12d\uacfc \uace0\uc7a5\uc804\ud30c\ub97c \uc81c\ud55c\ud55c\ub2e4.<\/td><\/tr>\n <tr><td>\uc9c4\ub2e8 \u2192 SFF \uc99d\uac00<\/td><td>\uc704\ud5d8\uace0\uc7a5\uc744 \uc790\ub3d9\uc73c\ub85c \uac80\ucd9c\ud558\uc5ec \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud560 \uc218 \uc788\ub2e4.<\/td><\/tr>\n <tr><td>Proof Test \u2192 \uc7a0\uc7ac\uace0\uc7a5 \uac10\uc18c<\/td><td>\uc790\ub3d9\uc9c4\ub2e8\uc774 \uac80\ucd9c\ud558\uc9c0 \ubabb\ud55c \uc704\ud5d8\uace0\uc7a5\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \ubc1c\uacac\ud55c\ub2e4.<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n\n <h3>2.5 Verification\uacfc Validation\uc758 \uad00\uacc4<\/h3>\n <div class=\"table-wrap\"><table>\n <thead><tr><th>\uad6c\ubd84<\/th><th>Verification<\/th><th>Validation<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>\ud575\uc2ec \uc9c8\ubb38<\/td><td>\uc124\uacc4\ub97c \uc694\uad6c\uc0ac\ud56d\ub300\ub85c \uc62c\ubc14\ub974\uac8c \uad6c\ud604\ud588\ub294\uac00?<\/td><td>\uc644\uc131\ub41c \uc2dc\uc2a4\ud15c\uc774 \uc2e4\uc81c \uc548\uc804\uc694\uad6c\ub97c \ucda9\uc871\ud558\ub294\uac00?<\/td><\/tr>\n <tr><td>\ub300\uc0c1<\/td><td>\ub2e8\uacc4\ubcc4 \uc0ac\uc591\uc11c, \uc124\uacc4\uc11c, \ubaa8\ub4c8, \uc778\ud130\ud398\uc774\uc2a4, \ud1b5\ud569 \uacb0\uacfc<\/td><td>\uc804\uccb4 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uacfc \uc2e4\uc81c \uc6b4\uc804\uc870\uac74<\/td><\/tr>\n <tr><td>\uc8fc\uc694 \ubc29\ubc95<\/td><td>\uac80\ud1a0, \uc785\ub825\ubd84\ud560, \uacbd\uacc4\uac12\uc2dc\ud5d8, \ube44\uc815\uc0c1 \uc785\ub825\uc2dc\ud5d8, \ub17c\ub9ac\uc870\ud569\uc2dc\ud5d8<\/td><td>\uae30\ub2a5\uc2dc\ud5d8, \ud658\uacbd\uc2dc\ud5d8, \uac04\uc12d\uc2dc\ud5d8, \uace0\uc7a5\uc0bd\uc785, \uc885\ud569 \uc778\uc218\uc2dc\ud5d8<\/td><\/tr>\n <tr><td>\uacb0\uacfc<\/td><td>\ub2e8\uacc4\ubcc4 \uac80\uc99d\uae30\ub85d\uacfc \uacb0\ud568\uc870\uce58 \uae30\ub85d<\/td><td>\uc804\uccb4 \uc694\uad6c\uc0ac\ud56d \ucd94\uc801\ud45c\uc640 \uc885\ud569 \ud655\uc778\ubcf4\uace0\uc11c<\/td><\/tr>\n <\/tbody>\n <\/table><\/div>\n <\/section>\n\n <section id=\"flow-explanation\">\n <h2 class=\"section-title\">3. \ud750\ub984\uc5d0 \ub9de\ucd98 \uc124\uba85<\/h2>\n <div class=\"timeline\">\n <article class=\"step\" data-step=\"1\"><h3>\uae30\ub2a5\uc548\uc804\uad00\ub9ac\uccb4\uacc4\ub97c \uc218\ub9bd\ud55c\ub2e4<\/h3><p>\ud504\ub85c\uc81d\ud2b8\ub97c \uc2dc\uc791\ud560 \ub54c \uc5ed\ud560, \ucc45\uc784, \uc5ed\ub7c9 \ubc0f \ub3c5\ub9bd\uc131\uc744 \uc815\ud55c\ub2e4. Quality and Safety Plan\uc744 \uc791\uc131\ud55c\ub2e4. \uc774 \uacc4\ud68d\uc5d0\ub294 \ubb38\uc11c\uccb4\uacc4, \uac80\ud1a0\ubc29\ubc95, \uc2dc\ud5d8\uc804\ub7b5, \ud615\uc0c1\uad00\ub9ac, Validation \uacc4\ud68d \ubc0f \uae30\ub2a5\uc548\uc804\uac10\uc0ac \uacc4\ud68d\uc774 \ud3ec\ud568\ub418\uc5b4\uc57c \ud55c\ub2e4. \ubaa8\ub4e0 \ud65c\ub3d9\uc740 \uae30\ub85d\ub418\uc5b4\uc57c \ud55c\ub2e4. \uae30\ub85d\uc774 \uc5c6\uc73c\uba74 \ud45c\uc900 \uc900\uc218 \uc5ec\ubd80\ub97c \ud3c9\uac00\ud560 \uc218 \uc5c6\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"2\"><h3>\uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 SRS\ub85c \uc815\uc758\ud55c\ub2e4<\/h3><p>\uc704\ud5d8\ubd84\uc11d \uacb0\uacfc\ub97c \ubc14\ud0d5\uc73c\ub85c \uc548\uc804\uae30\ub2a5\ubcc4 SIL\uc744 \uc815\ud55c\ub2e4. \uac01 \uc548\uc804\uae30\ub2a5\uc758 \uc800\uc218\uc694 \ub610\ub294 \uace0\uc218\uc694 \ubaa8\ub4dc\ub97c \uad6c\ubd84\ud55c\ub2e4. \uc751\ub2f5\uc2dc\uac04, \uc548\uc804\uc0c1\ud0dc, Trip \uc124\uc815\uac12, Reset \uc870\uac74, \uc804\uc6d0\uc0c1\uc2e4 \uc2dc \ub3d9\uc791, \uc6b4\uc804\ubaa8\ub4dc, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f Proof Test \uc694\uad6c\uc0ac\ud56d\uc744 \uc815\uc758\ud55c\ub2e4. \uc694\uad6c\uc0ac\ud56d\uc740 \uba85\ud655\ud558\uace0 \ubaa8\ud638\ud558\uc9c0 \uc54a\uc73c\uba70 \uc2dc\ud5d8 \uac00\ub2a5\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"3\"><h3>EUC\uc640 \uc548\uc804\uc2dc\uc2a4\ud15c\uc758 \uacbd\uacc4\ub97c \uc815\ud55c\ub2e4<\/h3><p>\uc77c\ubc18 \uc81c\uc5b4\uae30\ub2a5\uacfc \uc548\uc804\uae30\ub2a5\uc758 \uacbd\uacc4\ub97c \uc815\uc758\ud55c\ub2e4. \ub450 \uc2dc\uc2a4\ud15c \uc0ac\uc774\uc758 \uc804\uae30 \ubc0f \ub370\uc774\ud130 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uba85\ud655\ud788 \ud55c\ub2e4. \ud544\uc694\ud55c \uacbd\uc6b0 \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd84\ub9ac\ud55c\ub2e4. \ub3c5\ub9bd\uc131\uc744 \uc785\uc99d\ud560 \uc218 \uc5c6\ub2e4\uba74 \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc744 \ud3ec\ud568\ud55c \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc744 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc73c\ub85c \ucde8\uae09\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"4\"><h3>\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\ub41c \uc124\uacc4\ub97c \uc218\ud589\ud55c\ub2e4<\/h3><p>\uac80\uc99d\ub41c \ubd80\ud488\uacfc \uc124\uacc4\ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uae30\ub2a5\uc744 \ubaa8\ub4c8\ub85c \ubd84\ub9ac\ud55c\ub2e4. \uc548\uc804\uad00\ub828 \uc694\uc18c\uc640 \ube44\uc548\uc804\uad00\ub828 \uc694\uc18c\uc758 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc81c\ud55c\ud55c\ub2e4. \uace0\uc7a5\uc744 \uac80\ucd9c\ud558\uba74 \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud558\ub3c4\ub85d \uc124\uacc4\ud55c\ub2e4. \uc628\ub3c4, \uc9c4\ub3d9, EMC \ubc0f \uc804\uc6d0 \uc774\uc0c1\uc744 \uace0\ub824\ud55c\ub2e4. \uc628\ub77c\uc778 \ubcc0\uacbd\uc744 \uc81c\ud55c\ud558\uace0 \uc6b4\uc804\uc790 \uc624\uc870\uc791\uc744 \ubc29\uc9c0\ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"5\"><h3>\uc9c4\ub2e8\uacfc \uace0\uc7a5\ud5c8\uc6a9 \uad6c\uc870\ub97c \uacb0\uc815\ud55c\ub2e4<\/h3><p>\ubaa9\ud45c SIL\uc5d0 \ub530\ub77c Watchdog, \uba54\ubaa8\ub9ac \uac80\uc0ac, I\/O \uc9c4\ub2e8, \uc13c\uc11c \ubc0f \uc561\ucd94\uc5d0\uc774\ud130 \uc9c4\ub2e8\uc744 \uc124\uacc4\ud55c\ub2e4. \uc911\ubcf5\uad6c\uc870\ub97c \uc801\uc6a9\ud560 \uacbd\uc6b0 HFT\uac00 \uc99d\uac00\ud55c\ub2e4. \uadf8\ub7ec\ub098 \ub3d9\uc77c \uc6d0\uc778\uc5d0 \uc758\ud55c \ub3d9\uc2dc\uace0\uc7a5\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ucc44\ub110 \ubd84\ub9ac, \uc804\uc6d0 \ubd84\ub9ac, \ubc30\uc120 \ubd84\ub9ac \ubc0f \ub2e4\uc591\uc131 \uc124\uacc4\ub97c \ud568\uaed8 \uc801\uc6a9\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"6\"><h3>SFF\uc640 HFT\ub85c \uc544\ud0a4\ud14d\ucc98\ub97c \uac80\ud1a0\ud55c\ub2e4<\/h3><p>\uac01 \uc694\uc18c\ub97c Type A \ub610\ub294 Type B\ub85c \ubd84\ub958\ud55c\ub2e4. FMEA \ub610\ub294 \uace0\uc7a5\uc2dc\ud5d8\uc744 \ud1b5\ud574 \uc548\uc804\uce21 \uace0\uc7a5, \uac80\ucd9c\ub41c \uc704\ud5d8\uace0\uc7a5 \ubc0f \ubbf8\uac80\ucd9c \uc704\ud5d8\uace0\uc7a5\uc744 \uad6c\ubd84\ud55c\ub2e4. \uc774\ub97c \uc774\uc6a9\ud558\uc5ec SFF\ub97c \uc0b0\uc815\ud55c\ub2e4. SFF\uc640 HFT \ud45c\ub97c \uc774\uc6a9\ud558\uc5ec \ud574\ub2f9 \uad6c\uc870\uac00 \ubaa9\ud45c SIL\uc744 \uc8fc\uc7a5\ud560 \uc218 \uc788\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4. \uc774\uac83\uc774 Route 1H\uc758 \uae30\ubcf8 \ud750\ub984\uc774\ub2e4.<\/p><p>\ucda9\ubd84\ud558\uace0 \uac80\uc99d\ub41c \ud604\uc7a5 \uace0\uc7a5\ub370\uc774\ud130\uac00 \uc788\ub2e4\uba74 Route 2H\ub97c \uac80\ud1a0\ud560 \uc218 \uc788\ub2e4. \uc774\ub54c \uc81c\uc870\uc0ac \ubcf4\uc99d\ubc18\ud488 \uc790\ub8cc\uac00 \uc544\ub2c8\ub77c \uc2e4\uc81c \uc6b4\uc804\ud658\uacbd\uc5d0\uc11c \uc218\uc9d1\ud55c \ud604\uc7a5\ub370\uc774\ud130\uac00 \ud544\uc694\ud558\ub2e4. \ub370\uc774\ud130\uc758 \uc801\uc6a9\ud658\uacbd, \uace0\uc7a5\ubd84\ub958 \ubc0f \ud1b5\uacc4\uc801 \uc2e0\ub8b0\uc218\uc900\uc744 \uc785\uc99d\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"7\"><h3>PFD \ub610\ub294 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4<\/h3><p>\uc2e0\ub8b0\ub3c4 \ubaa8\ub378\uc744 \uc791\uc131\ud55c\ub2e4. \uc13c\uc11c, \ub85c\uc9c1\uc194\ubc84 \ubc0f \ucd5c\uc885\uc694\uc18c\uc758 \uc704\ud5d8\uace0\uc7a5\ub960\uc744 \ubc18\uc601\ud55c\ub2e4. \uc9c4\ub2e8\uc8fc\uae30, Proof Test \uc8fc\uae30, \uc218\ub9ac\uc2dc\uac04, \uc9c4\ub2e8\ubc94\uc704 \ubc0f CCF\ub97c \ud3ec\ud568\ud55c\ub2e4. \uc800\uc218\uc694 \uae30\ub2a5\uc740 PFD\ub97c \uacc4\uc0b0\ud558\uace0 \uace0\uc218\uc694 \ub610\ub294 \uc5f0\uc18d\uc6b4\uc804 \uae30\ub2a5\uc740 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4. \uacc4\uc0b0\uacb0\uacfc\ub294 SIL \ubc94\uc704\ubfd0 \uc544\ub2c8\ub77c \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \uc124\uc815\ud55c \uac1c\ubcc4 \uc815\ub7c9\ubaa9\ud45c\uc640 \ube44\uad50\ud574\uc57c \ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"8\"><h3>\ud1b5\ud569\uc2dc\ud5d8\uacfc Verification\uc744 \uc218\ud589\ud55c\ub2e4<\/h3><p>\uc785\ub825 \uc870\ud569\uc5d0 \ub530\ub978 \ucd9c\ub825\uc751\ub2f5\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \uc785\ub825 \uc601\uc5ed\uc744 \ubd84\ud560\ud558\uace0 \uacbd\uacc4\uac12\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \ube44\uc815\uc0c1 \uc785\ub825\uacfc \uba85\uc138\ub418\uc9c0 \uc54a\uc740 \uc785\ub825\uc5d0 \ub300\ud55c \ub3d9\uc791\ub3c4 \ud655\uc778\ud55c\ub2e4. \ub192\uc740 SIL\uc5d0\uc11c\ub294 \uc6b4\uc804 \uacbd\uacc4\uc5d0\uc11c \uc5ec\ub7ec \uc911\uc694 \ub17c\ub9ac\uac00 \ub3d9\uc2dc\uc5d0 \uc791\ub3d9\ud558\ub294 \uc870\uac74\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \uc2dc\ud5d8\ubc84\uc804, \uc2dc\ud5d8\ub3c4\uad6c, \ud569\uaca9\uae30\uc900, \uacb0\uacfc \ubc0f \ubd88\uc77c\uce58 \uc0ac\ud56d\uc744 \uae30\ub85d\ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"9\"><h3>Validation\uc73c\ub85c \uc804\uccb4 \uc694\uad6c\uc0ac\ud56d\uc744 \ud655\uc778\ud55c\ub2e4<\/h3><p>SRS\uc758 \uac01 \uc694\uad6c\uc0ac\ud56d\uc744 \uacc4\uc0b0\uc11c, \uac80\ud1a0\uc11c \ubc0f \uc2dc\ud5d8\uc131\uc801\uc11c\uc640 \uc5f0\uacb0\ud55c\ub2e4. \uae30\ub2a5\uc2dc\ud5d8, \ud658\uacbd\uc2dc\ud5d8, \uac04\uc12d\uc2dc\ud5d8 \ubc0f \uace0\uc7a5\uc0bd\uc785\uc2dc\ud5d8\uc744 \uc218\ud589\ud55c\ub2e4. \ubc1c\uacac\ub41c \ubb38\uc81c\ub294 \ud604\uc0c1, \uc6d0\uc778, \uc870\uce58 \ubc0f \uc7ac\uc2dc\ud5d8 \uacb0\uacfc\uae4c\uc9c0 \ub2eb\uc544\uc57c \ud55c\ub2e4. Validation\uc740 \uac1c\ubcc4 \uc2dc\ud5d8\uc758 \uc9d1\ud569\uc774 \uc544\ub2c8\ub77c \uc804\uccb4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc5d0 \ub300\ud55c \uc885\ud569 \ud655\uc778\uc774\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"10\"><h3>\uc6b4\uc804\uacfc \uc720\uc9c0\ubcf4\uc218\ub85c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4<\/h3><p>\uc6b4\uc804\uc808\ucc28\uc640 \uc815\ube44\uc808\ucc28\ub97c \uba85\ud655\ud788 \ud55c\ub2e4. Proof Test\ub97c \uc815\ud574\uc9c4 \uc8fc\uae30\ub85c \uc218\ud589\ud55c\ub2e4. \uc2e4\uc81c Demand \ud69f\uc218, \uace0\uc7a5, \uc624\ub3d9\uc791, \uc218\ub9ac \ubc0f \uad50\uccb4\uc774\ub825\uc744 \uae30\ub85d\ud55c\ub2e4. \uae30\ub85d\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \uac80\ud1a0\ud558\uc5ec \ucd5c\ucd08 SIL \uac00\uc815\uacfc \uace0\uc7a5\ub960 \uac00\uc815\uc774 \uc801\uc808\ud588\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4. \uc811\uadfc\uad8c\ud55c\uacfc \uc6b4\uc804\uc790 \uad50\uc721\ub3c4 \uad00\ub9ac\ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"11\"><h3>\ubcc0\uacbd\uc744 \ud1b5\uc81c\ud558\uace0 \uc7ac\uac80\uc99d\ud55c\ub2e4<\/h3><p>\ubaa8\ub4e0 \ubcc0\uacbd\uc740 \ud615\uc0c1\uad00\ub9ac \ub300\uc0c1\uc774\ub2e4. \ubcc0\uacbd\uc0ac\uc720\uc640 \uc601\ud5a5\ubd84\uc11d\uc744 \uae30\ub85d\ud55c\ub2e4. \ubcc0\uacbd\ub41c \ubaa8\ub4c8\ubfd0 \uc544\ub2c8\ub77c \uc601\ud5a5\uc744 \ubc1b\ub294 \uc778\ud130\ud398\uc774\uc2a4\uc640 \uad00\ub828 \ubaa8\ub4c8\ub3c4 \uc7ac\uac80\uc99d\ud55c\ub2e4. \ubcc0\uacbd\uc73c\ub85c SRS, \uc2e0\ub8b0\ub3c4 \uacc4\uc0b0, \uc2dc\ud5d8\ubc94\uc704 \ub610\ub294 Safety Manual\uc774 \ub2ec\ub77c\uc9c0\uba74 \uad00\ub828 \ubb38\uc11c\ub97c \ubaa8\ub450 \uac31\uc2e0\ud55c\ub2e4.<\/p><\/article>\n <article class=\"step\" data-step=\"12\"><h3>\uc801\ud569\uc131 \uc785\uc99d\uc790\ub8cc\ub97c \uc644\uc131\ud55c\ub2e4<\/h3><p>IEC 61508 \uc694\uad6c\uc0ac\ud56d\ubcc4\ub85c \uc99d\uac70\ubb38\uc11c\ub97c \uc5f0\uacb0\ud55c\ub2e4. \uc99d\uac70\uc5d0\ub294 SRS, \uc124\uacc4\uc11c, FMEA, CCF \ubd84\uc11d\uc11c, PFD\/PFH \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uacc4\ud68d\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, Validation \ubcf4\uace0\uc11c, Safety Manual, \ubcc0\uacbd\uc774\ub825 \ubc0f \uc6b4\uc804\uae30\ub85d\uc774 \ud3ec\ud568\ub41c\ub2e4. \ucd5c\uc885 \ubaa9\uc801\uc740 \u201c\ud45c\uc900\uc744 \uc801\uc6a9\ud588\ub2e4\u201d\uace0 \uc120\uc5b8\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, \uac01 \uc694\uad6c\uc0ac\ud56d\uc774 \ucda9\uc871\ub418\uc5c8\uc74c\uc744 \ucd94\uc801 \uac00\ub2a5\ud55c \uc790\ub8cc\ub85c \uc785\uc99d\ud558\ub294 \uac83\uc774\ub2e4.<\/p><\/article>\n <\/div>\n\n <div class=\"keybox\">\n <h4>\ucd5c\uc885 \ud750\ub984 \uc694\uc57d<\/h4>\n \uc704\ud5d8\ubd84\uc11d\uacfc SIL \uc124\uc815\uc5d0\uc11c \uc2dc\uc791\ud55c\ub2e4. SRS\ub85c \uc548\uc804\uae30\ub2a5\uc744 \uba85\ud655\ud788 \ud55c\ub2e4. \uad6c\uc870\ud654, \ubaa8\ub4c8\ud654, \ubd84\ub9ac, \uc911\ubcf5 \ubc0f \ub2e4\uc591\uc131\uc73c\ub85c \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ubc29\uc5b4\ud55c\ub2e4. SFF\uc640 HFT\ub85c \ud558\ub4dc\uc6e8\uc5b4 \uad6c\uc870\ub97c \uac80\ud1a0\ud55c\ub2e4. PFD \ub610\ub294 PFH\ub85c \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \ubaa9\ud45c\ub97c \ud655\uc778\ud55c\ub2e4. Verification\uacfc Validation\uc73c\ub85c \uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc744 \uc785\uc99d\ud55c\ub2e4. \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218 \ubc0f \ubcc0\uacbd\uad00\ub9ac\ub85c \ub2ec\uc131\ub41c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"references\" class=\"reference\">\n <h2 class=\"section-title\">\ucc38\uace0\ubb38\ud5cc<\/h2>\n <p>David J. Smith and Kenneth G. L. Simpson, <em>The Safety Critical Systems Handbook: A Straightforward Guide to Functional Safety, IEC 61508, IEC 61511 and Related Guidance<\/em>, 4th ed., Butterworth-Heinemann, 2016, Chapter 3, pp. 57\u201378.<\/p>\n <\/section>\n <\/main>\n <\/div>\n <\/div>\n\n <footer>IEC 61508 Part 2 Chapter 3 \ud559\uc2b5\uc6a9 HTML \ubb38\uc11c \u00b7 \ub2e8\uc77c \ud504\ub808\uc784<\/footer>\n<\/body>\n<\/html>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/TheSafetyCriticlaSystem-6.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"TheSafetyCriticlaSystem-6\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-11b4ee2d-2c65-4536-b40a-2df05a3d7ab3\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/TheSafetyCriticlaSystem-6.pdf\">TheSafetyCriticlaSystem-6<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/TheSafetyCriticlaSystem-6.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-11b4ee2d-2c65-4536-b40a-2df05a3d7ab3\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<pre class=\"wp-block-code\"><code>\\documentclass[11pt,a4paper]{article}\n\n\\usepackage{kotex}\n\\usepackage[margin=22mm]{geometry}\n\\usepackage{setspace}\n\\usepackage{booktabs}\n\\usepackage{tabularx}\n\\usepackage{array}\n\\usepackage{enumitem}\n\\usepackage{xcolor}\n\\usepackage{amsmath}\n\\usepackage{tikz}\n\\usepackage[most]{tcolorbox}\n\\usepackage[hidelinks]{hyperref}\n\\usetikzlibrary{arrows.meta,positioning,shapes.geometric,fit}\n\n\\setstretch{1.18}\n\\setlist[itemize]{leftmargin=1.7em,itemsep=2pt,topsep=3pt}\n\\setlist[enumerate]{leftmargin=2.0em,itemsep=4pt,topsep=4pt}\n\\renewcommand{\\arraystretch}{1.35}\n\n\\definecolor{navy}{RGB}{28,56,92}\n\\definecolor{bluegray}{RGB}{230,237,245}\n\\definecolor{lightgray}{RGB}{246,247,249}\n\\definecolor{darkgray}{RGB}{65,70,78}\n\n\\newtcolorbox{keybox}[1]{\n colback=bluegray,\n colframe=navy,\n boxrule=0.7pt,\n arc=1.5mm,\n title=\\textbf{#1},\n fonttitle=\\bfseries\n}\n\n\\newtcolorbox{summarybox}{\n colback=lightgray,\n colframe=darkgray,\n boxrule=0.6pt,\n arc=1.5mm\n}\n\n\\newcommand{\\eng}[1]{\\textit{#1}}\n\\newcommand{\\term}[1]{\\textbf{#1}}\n\n\\title{\\textbf{IEC 61508 Part 2 \uae30\ubc18\\\\\uc548\uc804\uad00\ub828 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc815\ub9ac}}\n\\author{\\eng{The Safety Critical Systems Handbook}, Chapter 3 \ud559\uc2b5 \ub178\ud2b8}\n\\date{}\n\n\\begin{document}\n\n\\maketitle\n\n\\begin{summarybox}\nChapter 3\uc740 IEC 61508 Part 2\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \uc124\uba85\ud55c\ub2e4. \ub300\uc0c1\uc740 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc758 \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc124\uacc4\uc774\ub2e4. \ud575\uc2ec\uc740 \ubaa9\ud45c SIL\uc744 \ub9cc\uc871\ud558\ub294 \uc124\uacc4\ub97c \uc218\ud589\ud558\uace0, \uadf8 \uacb0\uacfc\ub97c \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, \uac80\ud1a0\uae30\ub85d \ubc0f \uc6b4\uc804\uae30\ub85d\uc73c\ub85c \uc785\uc99d\ud558\ub294 \uac83\uc774\ub2e4.\n\\end{summarybox}\n\n\\tableofcontents\n\\newpage\n\n% =========================================================\n\\section{\ud0a4\uc6cc\ub4dc \uc815\uc758}\n% =========================================================\n\n\\subsection{\uc801\uc6a9 \ubc94\uc704\uc640 \uae30\ubcf8 \uac1c\ub150}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\nIEC 61508 Part 2 & \uc548\uc804\uad00\ub828 \uc804\uae30\u00b7\uc804\uc790\u00b7\ud504\ub85c\uadf8\ub7a8 \uac00\ub2a5 \uc804\uc790 \uc2dc\uc2a4\ud15c\uc758 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc694\uad6c\uc0ac\ud56d\uc744 \ub2e4\ub8ec\ub2e4. \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c \uc694\uad6c\uc0ac\ud56d\uc740 Part 3\uc5d0\uc11c \ub2e4\ub8ec\ub2e4. \\\\\nE\/E\/PE \uc2dc\uc2a4\ud15c & Electrical, Electronic, Programmable Electronic System\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc804\uae30, \uc804\uc790 \ub610\ub294 \ud504\ub85c\uadf8\ub7a8 \uac00\ub2a5 \uc804\uc790\uae30\uc220\uc744 \uc774\uc6a9\ud558\uc5ec \uc548\uc804\uae30\ub2a5\uc744 \uc218\ud589\ud558\ub294 \uc2dc\uc2a4\ud15c\uc774\ub2e4. \\\\\nEUC & Equipment Under Control\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uc2dc\uc2a4\ud15c\uc774 \uac10\uc2dc\ud558\uac70\ub098 \ubcf4\ud638\ud558\ub294 \ub300\uc0c1 \uc124\ube44\uc774\ub2e4. \\\\\n\uc548\uc804\uae30\ub2a5 & \ud2b9\uc815 \uc704\ud5d8\uacfc \uad00\ub828\ud558\uc5ec EUC\ub97c \uc548\uc804\uc0c1\ud0dc\ub85c \uc720\uc9c0\ud558\uac70\ub098 \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud558\ub294 \uae30\ub2a5\uc774\ub2e4. \\\\\n\uc548\uc804\uc0c1\ud0dc & \uc704\ud5d8\uc774 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc218\uc900\uc73c\ub85c \uac10\uc18c\ub41c \uc124\ube44 \uc0c1\ud0dc\uc774\ub2e4. \uacf5\uc815 \uc815\uc9c0, \ubc38\ube0c \ucc28\ub2e8, \uc5d0\ub108\uc9c0 \ucc28\ub2e8 \ub4f1\uc774 \ud574\ub2f9\ud560 \uc218 \uc788\ub2e4. \\\\\nSIL & Safety Integrity Level\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uae30\ub2a5\uc5d0 \uc694\uad6c\ub418\ub294 \ubb34\uacb0\uc131 \uc218\uc900\uc774\ub2e4. SIL\uc774 \ub192\uc544\uc9c8\uc218\ub85d \uc124\uacc4, \ub3c5\ub9bd\uc131, \uac80\uc99d \ubc0f \ubb38\uc11c\ud654 \uc218\uc900\uc774 \uac15\ud654\ub41c\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{\uc0dd\uba85\uc8fc\uae30\uc640 \uc694\uad6c\uc0ac\ud56d}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\n\uc548\uc804 \uc0dd\uba85\uc8fc\uae30 & \uc694\uad6c\uc0ac\ud56d \uc815\uc758, \uc124\uacc4, \uc81c\uc791, \uc124\uce58, \uc2dc\ud5d8, \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218, \ubcc0\uacbd \ubc0f \ud3d0\uae30\uae4c\uc9c0 \uc548\uc804\uc744 \uad00\ub9ac\ud558\ub294 \uc804\uccb4 \uc808\ucc28\uc774\ub2e4. \\\\\n\uae30\ub2a5\uc548\uc804\uad00\ub9ac & Functional Safety Management\uc758 \uc758\ubbf8\uc774\ub2e4. \uc5ed\ud560, \ucc45\uc784, \uc5ed\ub7c9, \ubb38\uc11c, \uac80\ud1a0, \uac10\uc0ac \ubc0f \ud615\uc0c1\uad00\ub9ac\ub97c \uccb4\uacc4\uc801\uc73c\ub85c \uc6b4\uc601\ud558\ub294 \uad00\ub9ac\uccb4\uacc4\uc774\ub2e4. \\\\\nQuality and Safety Plan & \ud504\ub85c\uc81d\ud2b8\uc758 \uae30\ub2a5\uc548\uc804 \ubaa9\ud45c, \uc870\uc9c1, \ucc45\uc784, \ubb38\uc11c\uccb4\uacc4, \uac80\uc99d\uacc4\ud68d \ubc0f \ud655\uc778\uacc4\ud68d\uc744 \uc815\uc758\ud558\ub294 \ucd5c\uc0c1\uc704 \uacc4\ud68d\uc11c\uc774\ub2e4. \\\\\nSRS & Safety Requirements Specification\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc548\uc804\uae30\ub2a5, SIL, \uc751\ub2f5\uc2dc\uac04, \uc548\uc804\uc0c1\ud0dc, \uc6b4\uc804\ubaa8\ub4dc, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f \uc2dc\ud5d8\uc870\uac74\uc744 \uba85\ud655\ud558\uace0 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \ud615\ud0dc\ub85c \uc815\uc758\ud55c \ubb38\uc11c\uc774\ub2e4. \\\\\n\ucd94\uc801\uc131 & \uc694\uad6c\uc0ac\ud56d\uc774 \uc124\uacc4, \uad6c\ud604, \uc2dc\ud5d8 \ubc0f \uacb0\uacfc\ubcf4\uace0\uc11c\uc640 \uc5f0\uacb0\ub418\ub294 \uc131\uc9c8\uc774\ub2e4. \uc694\uad6c\uc0ac\ud56d \ub204\ub77d\uacfc \ubbf8\uac80\uc99d \ud56d\ubaa9\uc744 \ubc29\uc9c0\ud55c\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{\uc124\uacc4\uc640 \ub3c5\ub9bd\uc131}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\n\uad6c\uc870\ud654 \uc124\uacc4 & \uae30\ub2a5\uc744 \uba85\ud655\ud788 \ubd84\ud560\ud558\uace0 \uacc4\uce35\uacfc \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc2dd\ubcc4\ud560 \uc218 \uc788\ub3c4\ub85d \uc124\uacc4\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \\\\\n\ubaa8\ub4c8\ud654 & \uc2dc\uc2a4\ud15c\uc744 \ub3c5\ub9bd\uc801\uc778 \uae30\ub2a5 \ub2e8\uc704\ub85c \ubd84\ub9ac\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \uacb0\ud568\uc758 \uc804\ud30c\ub97c \uc81c\ud55c\ud558\uace0 \uc2dc\ud5d8\uacfc \ubcc0\uacbd\uc744 \uc6a9\uc774\ud558\uac8c \ud55c\ub2e4. \\\\\n\ubd84\ub9ac & EUC, \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c, \uc548\uc804\uc2dc\uc2a4\ud15c \ubc0f \uc911\ubcf5 \ucc44\ub110 \uc0ac\uc774\uc758 \ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801\u00b7\ub370\uc774\ud130\uc801 \ub3c5\ub9bd\uc744 \ud655\ubcf4\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \\\\\n\uc911\ubcf5\uc131 & \ub3d9\uc77c\ud55c \uc548\uc804\uae30\ub2a5\uc744 \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774 \uc218\ud589\ud558\ub3c4\ub85d \uad6c\uc131\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4. \ud558\ub098\uc758 \uace0\uc7a5\uc774 \uc804\uccb4 \uae30\ub2a5 \uc0c1\uc2e4\ub85c \uc774\uc5b4\uc9c0\ub294 \uac83\uc744 \ubc29\uc9c0\ud55c\ub2e4. \\\\\n\ub2e4\uc591\uc131 & \uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \uc124\uacc4 \ub610\ub294 \uad6c\ud604\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4. \ub3d9\uc77c \uc6d0\uc778\uc73c\ub85c \uc911\ubcf5 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud558\ub294 \uac83\uc744 \ubc29\uc9c0\ud55c\ub2e4. \\\\\nCCF & Common Cause Failure\uc758 \uc57d\uc5b4\uc774\ub2e4. \uacf5\ud1b5\ub41c \uc6d0\uc778\uc73c\ub85c \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uace0\uc7a5 \ub098\ub294 \ud604\uc0c1\uc774\ub2e4. \\\\\n\uc9c4\ub2e8\ubc94\uc704 & Diagnostic Coverage\uc758 \uc758\ubbf8\uc774\ub2e4. \uc704\ud5d8\uace0\uc7a5 \uc911 \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4. \\\\\nWatchdog & CPU \uc815\uc9c0, \ud504\ub85c\uadf8\ub7a8 \uc21c\uc11c \uc774\uc0c1 \ub610\ub294 \uc2e4\ud589\uc2dc\uac04 \uc774\uc0c1\uc744 \uac10\uc2dc\ud558\ub294 \uae30\ubcf8 \uc9c4\ub2e8\uae30\ub2a5\uc774\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{\ud558\ub4dc\uc6e8\uc5b4 \uc548\uc804\ubb34\uacb0\uc131 \ud3c9\uac00}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\n\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 & \ubd80\ud488 \uc5f4\ud654\ub098 \ubb3c\ub9ac\uc801 \uc190\uc0c1\ucc98\ub7fc \uace0\uc7a5\ub960\ub85c \uc815\ub7c9\ud654\ud560 \uc218 \uc788\ub294 \uace0\uc7a5\uc774\ub2e4. \\\\\n\uccb4\uacc4\uc801 \uace0\uc7a5 & \uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \uc81c\uc791, \ubcc0\uacbd \ub610\ub294 \uc6b4\uc804\uc808\ucc28\uc758 \uacb0\ud568\ucc98\ub7fc \ud2b9\uc815 \uc870\uac74\uc5d0\uc11c \ubc18\ubcf5\ub418\ub294 \uace0\uc7a5\uc774\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uace0\uc7a5\ub960\ub85c \uc9c1\uc811 \uc608\uce21\ud558\uc9c0 \uc54a\ub294\ub2e4. \\\\\nSFF & Safe Failure Fraction\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uce21 \uace0\uc7a5\uacfc \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4. \\\\\nHFT & Hardware Fault Tolerance\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc2dc\uc2a4\ud15c\uc774 \uc548\uc804\uae30\ub2a5\uc744 \uc0c1\uc2e4\ud558\uc9c0 \uc54a\uace0 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \uac1c\uc218\uc774\ub2e4. \\\\\nType A \uc694\uc18c & \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5 \uc2dc \ub3d9\uc791 \ubc0f \uace0\uc7a5\ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \uc54c\ub824\uc9c4 \ube44\uad50\uc801 \ub2e8\uc21c\ud55c \uc694\uc18c\uc774\ub2e4. \\\\\nType B \uc694\uc18c & \ubcf5\uc7a1\ud55c \uc804\uc790\uc7a5\uce58\ucc98\ub7fc \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5 \uc2dc \ub3d9\uc791 \ub610\ub294 \uace0\uc7a5\ub370\uc774\ud130\uac00 \ucda9\ubd84\ud788 \uc54c\ub824\uc9c0\uc9c0 \uc54a\uc740 \uc694\uc18c\uc774\ub2e4. \\\\\nPFD & Probability of Failure on Demand\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc800\uc218\uc694 \uc548\uc804\uae30\ub2a5\uc774 \uc694\uad6c\ub420 \ub54c \uc2e4\ud328\ud560 \ud3c9\uade0 \ud655\ub960\uc774\ub2e4. \\\\\nPFH & Probability of dangerous Failure per Hour\uc758 \uc758\ubbf8\uc774\ub2e4. \uace0\uc218\uc694 \ub610\ub294 \uc5f0\uc18d\uc6b4\uc804 \uc548\uc804\uae30\ub2a5\uc758 \uc2dc\uac04\ub2f9 \uc704\ud5d8\uace0\uc7a5 \ube48\ub3c4\uc774\ub2e4. \\\\\nFMEA & Failure Mode and Effects Analysis\uc758 \uc57d\uc5b4\uc774\ub2e4. \ubd80\ud488\ubcc4 \uace0\uc7a5\ubaa8\ub4dc\uc640 \uc2dc\uc2a4\ud15c \uc601\ud5a5\uc744 \ubd84\uc11d\ud558\ub294 \uae30\ubc95\uc774\ub2e4. \\\\\nFTA & Fault Tree Analysis\uc758 \uc57d\uc5b4\uc774\ub2e4. \uc0c1\uc704 \uc704\ud5d8\uc0ac\uac74\uc758 \uc6d0\uc778\uc744 \ub17c\ub9ac\uc801\uc73c\ub85c \uc804\uac1c\ud558\ub294 \uae30\ubc95\uc774\ub2e4. \\\\\nProof Test & \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \ubc1c\uacac\ub418\uc9c0 \uc54a\ub294 \uc7a0\uc7ac \uc704\ud5d8\uace0\uc7a5\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \ud655\uc778\ud558\ub294 \uc2dc\ud5d8\uc774\ub2e4. \\\\\nRoute 1H & SFF\uc640 HFT\uc5d0 \ub530\ub978 \uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d\uc744 \uc801\uc6a9\ud558\uc5ec \ucd5c\ub300 SIL\uc744 \ud310\ub2e8\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \\\\\nRoute 2H & \ucda9\ubd84\ud558\uace0 \uac80\uc99d\ub41c \ud604\uc7a5 \uace0\uc7a5\ub370\uc774\ud130\ub97c \uc774\uc6a9\ud558\uc5ec \ud558\ub4dc\uc6e8\uc5b4 \uc544\ud0a4\ud14d\ucc98 \uc801\ud569\uc131\uc744 \uc8fc\uc7a5\ud558\ub294 \ub300\uc548 \uacbd\ub85c\uc774\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{\uc2dc\ud5d8, \ud655\uc778 \ubc0f \uc99d\uac70}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.24\\textwidth} X}\n\\toprule\n\ud0a4\uc6cc\ub4dc & \uc815\uc758 \\\\\n\\midrule\nVerification & \uac01 \uc0dd\uba85\uc8fc\uae30 \ub2e8\uacc4\uc758 \uc0b0\ucd9c\ubb3c\uc774 \uc774\uc804 \ub2e8\uacc4\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \uc62c\ubc14\ub974\uac8c \ub9cc\uc871\ud558\ub294\uc9c0 \uac80\ud1a0\ud558\uace0 \uc2dc\ud5d8\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. ``\uc124\uacc4\ub97c \uc62c\ubc14\ub974\uac8c \uad6c\ud604\ud588\ub294\uac00''\ub97c \ud655\uc778\ud55c\ub2e4. \\\\\nValidation & \uc644\uc131\ub41c \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc774 \uc2e4\uc81c \uc0ac\uc6a9\ud658\uacbd\uc5d0\uc11c \uc804\uccb4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 \ub9cc\uc871\ud558\ub294\uc9c0 \ud655\uc778\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. ``\ud544\uc694\ud55c \uc548\uc804\uc2dc\uc2a4\ud15c\uc744 \ub9cc\ub4e4\uc5c8\ub294\uac00''\ub97c \ud655\uc778\ud55c\ub2e4. \\\\\nSafety Manual & \uc548\uc804\uad00\ub828 \uc7a5\uce58\uc758 \uae30\ub2a5, \uad6c\uc131, \uace0\uc7a5\ubaa8\ub4dc, \uace0\uc7a5\ub960, \uc9c4\ub2e8\ubc94\uc704, HFT, \uc0ac\uc6a9\uc81c\ud55c \ubc0f Proof Test \uc870\uac74\uc744 \uc81c\uacf5\ud558\ub294 \ubb38\uc11c\uc774\ub2e4. \\\\\n\uc601\ud5a5\ubd84\uc11d & \ubcc0\uacbd\uc774 \uc548\uc804\uae30\ub2a5, \uc778\ud130\ud398\uc774\uc2a4, \uc2dc\ud5d8\ubc94\uc704 \ubc0f \uae30\uc874 \uac80\uc99d\uacb0\uacfc\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5\uc744 \ud3c9\uac00\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \\\\\nProven in Use & \uc720\uc0ac\ud55c \ud658\uacbd\uacfc \uc6a9\ub3c4\uc5d0\uc11c \ucd95\uc801\ub41c \ucda9\ubd84\ud55c \ud604\uc7a5 \uc6b4\uc804 \ubc0f \uace0\uc7a5\ub370\uc774\ud130\ub97c \uc774\uc6a9\ud558\uc5ec \uc801\ud569\uc131\uc744 \uc8fc\uc7a5\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \\\\\n\uc801\ud569\uc131 \uc785\uc99d & IEC 61508\uc758 \uac01 \uc694\uad6c\uc0ac\ud56d\uacfc \uc774\ub97c \ucda9\uc871\ud558\ub294 \uc0ac\uc591\uc11c, \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, \uac80\ud1a0\uc11c \ubc0f \uc6b4\uc804\uae30\ub85d\uc744 \uc5f0\uacb0\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n% =========================================================\n\\section{\ud0a4\uc6cc\ub4dc \uac04 \uad00\uacc4 \uc815\ub9ac}\n% =========================================================\n\n\\subsection{\uc804\uccb4 \uad00\uacc4}\n\n\\begin{center}\n\\begin{tikzpicture}[\n node distance=8mm and 7mm,\n box\/.style={draw=navy, rounded corners, fill=bluegray, align=center, minimum height=9mm, text width=29mm, font=\\small},\n arrow\/.style={-{Latex[length=2mm]}, thick, draw=darkgray}\n]\n\\node[box] (sil) {\uc704\ud5d8\ubd84\uc11d\\\\\ubc0f SIL \ubaa9\ud45c};\n\\node[box, right=of sil] (srs) {SRS\\\\\uc548\uc804\uae30\ub2a5 \uc815\uc758};\n\\node[box, right=of srs] (design) {\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\\\\\ubd84\ub9ac\u00b7\ub2e4\uc591\uc131};\n\\node[box, below=of design] (arch) {SFF\u00b7HFT\\\\\uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d};\n\\node[box, left=of arch] (quant) {PFD\u00b7PFH\\\\\uc815\ub7c9\ud3c9\uac00};\n\\node[box, left=of quant] (verify) {\ud1b5\ud569\uc2dc\ud5d8\\\\Verification};\n\\node[box, below=of verify] (valid) {Validation\\\\\uc694\uad6c\uc0ac\ud56d \uc885\ud569\ud655\uc778};\n\\node[box, right=of valid] (ops) {\uc6b4\uc804\u00b7\uc815\ube44\\\\Proof Test};\n\\node[box, right=of ops] (evidence) {\uc801\ud569\uc131 \uc785\uc99d\\\\Evidence};\n\n\\draw[arrow] (sil) -- (srs);\n\\draw[arrow] (srs) -- (design);\n\\draw[arrow] (design) -- (arch);\n\\draw[arrow] (arch) -- (quant);\n\\draw[arrow] (quant) -- (verify);\n\\draw[arrow] (verify) -- (valid);\n\\draw[arrow] (valid) -- (ops);\n\\draw[arrow] (ops) -- (evidence);\n\\draw[arrow, dashed] (evidence.north) to[bend right=28] node[above, font=\\scriptsize]{\ubcc0\uacbd\u00b7\uc7ac\uac80\uc99d} (srs.south);\n\\end{tikzpicture}\n\\end{center}\n\n\\begin{keybox}{\uad00\uacc4\uc758 \ud575\uc2ec}\n\\begin{itemize}\n \\item SIL\uc740 \ucd9c\ubc1c\uc810\uc774\ub2e4. SIL\uc740 \uc548\uc804\uae30\ub2a5\ubcc4 \uc694\uad6c\uc218\uc900\uc744 \uacb0\uc815\ud55c\ub2e4.\n \\item SRS\ub294 SIL\uc744 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \uc694\uad6c\uc0ac\ud56d\uc73c\ub85c \ubcc0\ud658\ud55c\ub2e4.\n \\item \uc124\uacc4\uae30\ubc95\uc740 \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uc904\uc778\ub2e4.\n \\item SFF\uc640 HFT\ub294 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \ud558\ub4dc\uc6e8\uc5b4 \uad6c\uc870\ub97c \uc81c\ud55c\ud55c\ub2e4.\n \\item PFD \ub610\ub294 PFH\ub294 \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\ub7c9 \ubaa9\ud45c \ub2ec\uc131 \uc5ec\ubd80\ub97c \ud310\ub2e8\ud55c\ub2e4.\n \\item Verification\uacfc Validation\uc740 \uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc744 \uc2dc\ud5d8\uacfc \uae30\ub85d\uc73c\ub85c \ud655\uc778\ud55c\ub2e4.\n \\item \uc6b4\uc804\u00b7\uc815\ube44\uc640 \ubcc0\uacbd\uad00\ub9ac\ub294 \ub2ec\uc131\ub41c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc218\uba85\uc8fc\uae30 \ub3d9\uc548 \uc720\uc9c0\ud55c\ub2e4.\n\\end{itemize}\n\\end{keybox}\n\n\\subsection{\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc758 \uad00\uacc4}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.21\\textwidth} X X}\n\\toprule\n\uad6c\ubd84 & \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 & \uccb4\uacc4\uc801 \uace0\uc7a5 \\\\\n\\midrule\n\ubc1c\uc0dd \uc6d0\uc778 & \ubd80\ud488 \uc5f4\ud654, \ubb3c\ub9ac\uc801 \uc190\uc0c1, \uc6b0\ubc1c\uc801 \uace0\uc7a5 & \uc694\uad6c\uc0ac\ud56d \uc624\ub958, \uc124\uacc4 \uacb0\ud568, \uc81c\uc791 \uc624\ub958, \ubcc0\uacbd \uc624\ub958, \uc6b4\uc804\uc808\ucc28 \uc624\ub958 \\\\\n\ud3c9\uac00 \ubc29\ubc95 & \uace0\uc7a5\ub960, PFD, PFH, \uc2e0\ub8b0\ub3c4 \ubaa8\ub378, FMEA, FTA & \uc0dd\uba85\uc8fc\uae30 \uad00\ub9ac, \uc124\uacc4\ud45c\uc900, \ub3c5\ub9bd\uac80\ud1a0, \uc2dc\ud5d8, \ud615\uc0c1\uad00\ub9ac, \uc5ed\ub7c9\uad00\ub9ac \\\\\n\uc8fc\uc694 \ud0a4\uc6cc\ub4dc & SFF, HFT, \uc9c4\ub2e8\ubc94\uc704, Proof Test, CCF & SRS, \uad6c\uc870\ud654 \uc124\uacc4, \ubaa8\ub4c8\ud654, \ubd84\ub9ac, \ub2e4\uc591\uc131, Verification \\\\\n\ud310\uc815 \ubc29\uc2dd & \uc815\ub7c9\uc801 \ubaa9\ud45c\uc640 \ube44\uad50 & SIL\uc5d0 \ub300\uc751\ud558\ub294 \uc808\ucc28\uc640 \uae30\ubc95\uc758 \uc5c4\uaca9\uc131\uc73c\ub85c \ud310\ub2e8 \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\begin{summarybox}\n\ubaa9\ud45c SIL \ub2ec\uc131\uc740 \ud558\ub098\uc758 \uacc4\uc0b0\uc73c\ub85c \uacb0\uc815\ub418\uc9c0 \uc54a\ub294\ub2e4. \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\ub7c9\ud3c9\uac00\uc640 \uccb4\uacc4\uc801 \uace0\uc7a5\uc5d0 \ub300\ud55c \uc815\uc131\uc801 \ubc29\uc5b4\uac00 \ub3d9\uc2dc\uc5d0 \ud544\uc694\ud558\ub2e4.\n\\end{summarybox}\n\n\\subsection{SFF, HFT, PFD\/PFH\uc758 \uad00\uacc4}\n\n\\begin{enumerate}\n \\item \\term{SFF}\ub294 \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uce21 \uace0\uc7a5\uacfc \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc744 \ub098\ud0c0\ub0b8\ub2e4.\n \\item \\term{HFT}\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc744 \uba87 \uac1c\uae4c\uc9c0 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b8\ub2e4.\n \\item \\term{SFF\uc640 HFT}\ub294 \ud574\ub2f9 \uad6c\uc870\uc5d0\uc11c \uc8fc\uc7a5\ud560 \uc218 \uc788\ub294 \ucd5c\ub300 SIL\uc744 \uc81c\ud55c\ud55c\ub2e4.\n \\item \\term{PFD \ub610\ub294 PFH}\ub294 \uc120\ud0dd\ud55c \uad6c\uc870\uc758 \uc2e4\uc81c \uc704\ud5d8\uace0\uc7a5 \ud655\ub960 \ub610\ub294 \ube48\ub3c4\ub97c \uacc4\uc0b0\ud55c\ub2e4.\n \\item \ub530\ub77c\uc11c \uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d\uc744 \ub9cc\uc871\ud558\ub354\ub77c\ub3c4 PFD\/PFH \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\uc9c0 \ubabb\ud558\uba74 \uc124\uacc4\ub294 \ubd80\uc801\ud569\ud558\ub2e4.\n \\item \ubc18\ub300\ub85c PFD\/PFH \uacc4\uc0b0\uac12\uc774 \ucda9\ubd84\ud788 \ub0ae\ub354\ub77c\ub3c4 SFF\/HFT \uc81c\uc57d\uc744 \ucda9\uc871\ud558\uc9c0 \ubabb\ud558\uba74 \ud574\ub2f9 SIL\uc744 \uc8fc\uc7a5\ud560 \uc218 \uc5c6\ub2e4.\n\\end{enumerate}\n\n\\[\n\\text{SIL \uc801\ud569\uc131}\n=\n\\text{\uc544\ud0a4\ud14d\ucc98 \uc801\ud569\uc131(SFF\/HFT)}\n+\n\\text{\uc815\ub7c9 \uc801\ud569\uc131(PFD\/PFH)}\n+\n\\text{\uccb4\uacc4\uc801 \uace0\uc7a5 \ubc29\uc5b4}\n\\]\n\n\\subsection{\uc911\ubcf5\uc131, \ub2e4\uc591\uc131, \ubd84\ub9ac \ubc0f CCF\uc758 \uad00\uacc4}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.19\\textwidth} X}\n\\toprule\n\uad00\uacc4 & \uc124\uba85 \\\\\n\\midrule\n\uc911\ubcf5\uc131 $\\rightarrow$ HFT \uc99d\uac00 & \ud558\ub098\uc758 \ucc44\ub110\uc774 \uace0\uc7a5 \ub098\ub3c4 \ub2e4\ub978 \ucc44\ub110\uc774 \uc548\uc804\uae30\ub2a5\uc744 \uc720\uc9c0\ud55c\ub2e4. \\\\\n\uc911\ubcf5\uc131 $\\not\\Rightarrow$ CCF \uc81c\uac70 & \ub3d9\uc77c \uc804\uc6d0, \ub3d9\uc77c \ud658\uacbd, \ub3d9\uc77c \uc124\uacc4 \uc624\ub958\uac00 \uc788\uc73c\uba74 \ubaa8\ub4e0 \ucc44\ub110\uc774 \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4. \\\\\n\ub2e4\uc591\uc131 $\\rightarrow$ CCF \uac10\uc18c & \uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \ubd80\ud488 \ub610\ub294 \ub17c\ub9ac\ub97c \uc801\uc6a9\ud558\uc5ec \ub3d9\uc77c \uc6d0\uc778\uc5d0 \uc758\ud55c \ub3d9\uc2dc\uace0\uc7a5\uc744 \uc904\uc778\ub2e4. \\\\\n\ubd84\ub9ac $\\rightarrow$ \ub3c5\ub9bd\uc131 \uc99d\uac00 & \ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801\u00b7\ub370\uc774\ud130\uc801 \uac04\uc12d\uacfc \uace0\uc7a5\uc804\ud30c\ub97c \uc81c\ud55c\ud55c\ub2e4. \\\\\n\uc9c4\ub2e8 $\\rightarrow$ SFF \uc99d\uac00 & \uc704\ud5d8\uace0\uc7a5\uc744 \uc790\ub3d9\uc73c\ub85c \uac80\ucd9c\ud558\uc5ec \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud560 \uc218 \uc788\ub2e4. \\\\\nProof Test $\\rightarrow$ \uc7a0\uc7ac\uace0\uc7a5 \uac10\uc18c & \uc790\ub3d9\uc9c4\ub2e8\uc774 \uac80\ucd9c\ud558\uc9c0 \ubabb\ud55c \uc704\ud5d8\uace0\uc7a5\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \ubc1c\uacac\ud55c\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\n\\subsection{Verification\uacfc Validation\uc758 \uad00\uacc4}\n\n\\begin{tabularx}{\\textwidth}{>{\\bfseries}p{0.20\\textwidth} X X}\n\\toprule\n\uad6c\ubd84 & Verification & Validation \\\\\n\\midrule\n\ud575\uc2ec \uc9c8\ubb38 & \uc124\uacc4\ub97c \uc694\uad6c\uc0ac\ud56d\ub300\ub85c \uc62c\ubc14\ub974\uac8c \uad6c\ud604\ud588\ub294\uac00? & \uc644\uc131\ub41c \uc2dc\uc2a4\ud15c\uc774 \uc2e4\uc81c \uc548\uc804\uc694\uad6c\ub97c \ucda9\uc871\ud558\ub294\uac00? \\\\\n\ub300\uc0c1 & \ub2e8\uacc4\ubcc4 \uc0ac\uc591\uc11c, \uc124\uacc4\uc11c, \ubaa8\ub4c8, \uc778\ud130\ud398\uc774\uc2a4, \ud1b5\ud569 \uacb0\uacfc & \uc804\uccb4 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uacfc \uc2e4\uc81c \uc6b4\uc804\uc870\uac74 \\\\\n\uc8fc\uc694 \ubc29\ubc95 & \uac80\ud1a0, \uc785\ub825\ubd84\ud560, \uacbd\uacc4\uac12\uc2dc\ud5d8, \ube44\uc815\uc0c1 \uc785\ub825\uc2dc\ud5d8, \ub17c\ub9ac\uc870\ud569\uc2dc\ud5d8 & \uae30\ub2a5\uc2dc\ud5d8, \ud658\uacbd\uc2dc\ud5d8, \uac04\uc12d\uc2dc\ud5d8, \uace0\uc7a5\uc0bd\uc785, \uc885\ud569 \uc778\uc218\uc2dc\ud5d8 \\\\\n\uacb0\uacfc & \ub2e8\uacc4\ubcc4 \uac80\uc99d\uae30\ub85d\uacfc \uacb0\ud568\uc870\uce58 \uae30\ub85d & \uc804\uccb4 \uc694\uad6c\uc0ac\ud56d \ucd94\uc801\ud45c\uc640 \uc885\ud569 \ud655\uc778\ubcf4\uace0\uc11c \\\\\n\\bottomrule\n\\end{tabularx}\n\n% =========================================================\n\\section{\ud750\ub984\uc5d0 \ub9de\ucd98 \uc124\uba85}\n% =========================================================\n\n\\subsection{1\ub2e8\uacc4: \uae30\ub2a5\uc548\uc804\uad00\ub9ac\uccb4\uacc4\ub97c \uc218\ub9bd\ud55c\ub2e4}\n\n\ud504\ub85c\uc81d\ud2b8\ub97c \uc2dc\uc791\ud560 \ub54c \uc5ed\ud560, \ucc45\uc784, \uc5ed\ub7c9 \ubc0f \ub3c5\ub9bd\uc131\uc744 \uc815\ud55c\ub2e4. Quality and Safety Plan\uc744 \uc791\uc131\ud55c\ub2e4. \uc774 \uacc4\ud68d\uc5d0\ub294 \ubb38\uc11c\uccb4\uacc4, \uac80\ud1a0\ubc29\ubc95, \uc2dc\ud5d8\uc804\ub7b5, \ud615\uc0c1\uad00\ub9ac, Validation \uacc4\ud68d \ubc0f \uae30\ub2a5\uc548\uc804\uac10\uc0ac \uacc4\ud68d\uc774 \ud3ec\ud568\ub418\uc5b4\uc57c \ud55c\ub2e4. \ubaa8\ub4e0 \ud65c\ub3d9\uc740 \uae30\ub85d\ub418\uc5b4\uc57c \ud55c\ub2e4. \uae30\ub85d\uc774 \uc5c6\uc73c\uba74 \ud45c\uc900 \uc900\uc218 \uc5ec\ubd80\ub97c \ud3c9\uac00\ud560 \uc218 \uc5c6\ub2e4.\n\n\\subsection{2\ub2e8\uacc4: \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 SRS\ub85c \uc815\uc758\ud55c\ub2e4}\n\n\uc704\ud5d8\ubd84\uc11d \uacb0\uacfc\ub97c \ubc14\ud0d5\uc73c\ub85c \uc548\uc804\uae30\ub2a5\ubcc4 SIL\uc744 \uc815\ud55c\ub2e4. \uac01 \uc548\uc804\uae30\ub2a5\uc758 \uc800\uc218\uc694 \ub610\ub294 \uace0\uc218\uc694 \ubaa8\ub4dc\ub97c \uad6c\ubd84\ud55c\ub2e4. \uc751\ub2f5\uc2dc\uac04, \uc548\uc804\uc0c1\ud0dc, Trip \uc124\uc815\uac12, Reset \uc870\uac74, \uc804\uc6d0\uc0c1\uc2e4 \uc2dc \ub3d9\uc791, \uc6b4\uc804\ubaa8\ub4dc, \uc778\ud130\ud398\uc774\uc2a4 \ubc0f Proof Test \uc694\uad6c\uc0ac\ud56d\uc744 \uc815\uc758\ud55c\ub2e4. \uc694\uad6c\uc0ac\ud56d\uc740 \uba85\ud655\ud558\uace0 \ubaa8\ud638\ud558\uc9c0 \uc54a\uc73c\uba70 \uc2dc\ud5d8 \uac00\ub2a5\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{3\ub2e8\uacc4: EUC\uc640 \uc548\uc804\uc2dc\uc2a4\ud15c\uc758 \uacbd\uacc4\ub97c \uc815\ud55c\ub2e4}\n\n\uc77c\ubc18 \uc81c\uc5b4\uae30\ub2a5\uacfc \uc548\uc804\uae30\ub2a5\uc758 \uacbd\uacc4\ub97c \uc815\uc758\ud55c\ub2e4. \ub450 \uc2dc\uc2a4\ud15c \uc0ac\uc774\uc758 \uc804\uae30 \ubc0f \ub370\uc774\ud130 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uba85\ud655\ud788 \ud55c\ub2e4. \ud544\uc694\ud55c \uacbd\uc6b0 \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd84\ub9ac\ud55c\ub2e4. \ub3c5\ub9bd\uc131\uc744 \uc785\uc99d\ud560 \uc218 \uc5c6\ub2e4\uba74 \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc744 \ud3ec\ud568\ud55c \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc744 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc73c\ub85c \ucde8\uae09\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{4\ub2e8\uacc4: \uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\ub41c \uc124\uacc4\ub97c \uc218\ud589\ud55c\ub2e4}\n\n\uac80\uc99d\ub41c \ubd80\ud488\uacfc \uc124\uacc4\ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uae30\ub2a5\uc744 \ubaa8\ub4c8\ub85c \ubd84\ub9ac\ud55c\ub2e4. \uc548\uc804\uad00\ub828 \uc694\uc18c\uc640 \ube44\uc548\uc804\uad00\ub828 \uc694\uc18c\uc758 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc81c\ud55c\ud55c\ub2e4. \uace0\uc7a5\uc744 \uac80\ucd9c\ud558\uba74 \uc548\uc804\uc0c1\ud0dc\ub85c \uc804\ud658\ud558\ub3c4\ub85d \uc124\uacc4\ud55c\ub2e4. \uc628\ub3c4, \uc9c4\ub3d9, EMC \ubc0f \uc804\uc6d0 \uc774\uc0c1\uc744 \uace0\ub824\ud55c\ub2e4. \uc628\ub77c\uc778 \ubcc0\uacbd\uc744 \uc81c\ud55c\ud558\uace0 \uc6b4\uc804\uc790 \uc624\uc870\uc791\uc744 \ubc29\uc9c0\ud55c\ub2e4.\n\n\\subsection{5\ub2e8\uacc4: \uc9c4\ub2e8\uacfc \uace0\uc7a5\ud5c8\uc6a9 \uad6c\uc870\ub97c \uacb0\uc815\ud55c\ub2e4}\n\n\ubaa9\ud45c SIL\uc5d0 \ub530\ub77c Watchdog, \uba54\ubaa8\ub9ac \uac80\uc0ac, I\/O \uc9c4\ub2e8, \uc13c\uc11c \ubc0f \uc561\ucd94\uc5d0\uc774\ud130 \uc9c4\ub2e8\uc744 \uc124\uacc4\ud55c\ub2e4. \uc911\ubcf5\uad6c\uc870\ub97c \uc801\uc6a9\ud560 \uacbd\uc6b0 HFT\uac00 \uc99d\uac00\ud55c\ub2e4. \uadf8\ub7ec\ub098 \ub3d9\uc77c \uc6d0\uc778\uc5d0 \uc758\ud55c \ub3d9\uc2dc\uace0\uc7a5\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ucc44\ub110 \ubd84\ub9ac, \uc804\uc6d0 \ubd84\ub9ac, \ubc30\uc120 \ubd84\ub9ac \ubc0f \ub2e4\uc591\uc131 \uc124\uacc4\ub97c \ud568\uaed8 \uc801\uc6a9\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{6\ub2e8\uacc4: SFF\uc640 HFT\ub85c \uc544\ud0a4\ud14d\ucc98\ub97c \uac80\ud1a0\ud55c\ub2e4}\n\n\uac01 \uc694\uc18c\ub97c Type A \ub610\ub294 Type B\ub85c \ubd84\ub958\ud55c\ub2e4. FMEA \ub610\ub294 \uace0\uc7a5\uc2dc\ud5d8\uc744 \ud1b5\ud574 \uc548\uc804\uce21 \uace0\uc7a5, \uac80\ucd9c\ub41c \uc704\ud5d8\uace0\uc7a5 \ubc0f \ubbf8\uac80\ucd9c \uc704\ud5d8\uace0\uc7a5\uc744 \uad6c\ubd84\ud55c\ub2e4. \uc774\ub97c \uc774\uc6a9\ud558\uc5ec SFF\ub97c \uc0b0\uc815\ud55c\ub2e4. SFF\uc640 HFT \ud45c\ub97c \uc774\uc6a9\ud558\uc5ec \ud574\ub2f9 \uad6c\uc870\uac00 \ubaa9\ud45c SIL\uc744 \uc8fc\uc7a5\ud560 \uc218 \uc788\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4. \uc774\uac83\uc774 Route 1H\uc758 \uae30\ubcf8 \ud750\ub984\uc774\ub2e4.\n\n\ucda9\ubd84\ud558\uace0 \uac80\uc99d\ub41c \ud604\uc7a5 \uace0\uc7a5\ub370\uc774\ud130\uac00 \uc788\ub2e4\uba74 Route 2H\ub97c \uac80\ud1a0\ud560 \uc218 \uc788\ub2e4. \uc774\ub54c \uc81c\uc870\uc0ac \ubcf4\uc99d\ubc18\ud488 \uc790\ub8cc\uac00 \uc544\ub2c8\ub77c \uc2e4\uc81c \uc6b4\uc804\ud658\uacbd\uc5d0\uc11c \uc218\uc9d1\ud55c \ud604\uc7a5\ub370\uc774\ud130\uac00 \ud544\uc694\ud558\ub2e4. \ub370\uc774\ud130\uc758 \uc801\uc6a9\ud658\uacbd, \uace0\uc7a5\ubd84\ub958 \ubc0f \ud1b5\uacc4\uc801 \uc2e0\ub8b0\uc218\uc900\uc744 \uc785\uc99d\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{7\ub2e8\uacc4: PFD \ub610\ub294 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4}\n\n\uc2e0\ub8b0\ub3c4 \ubaa8\ub378\uc744 \uc791\uc131\ud55c\ub2e4. \uc13c\uc11c, \ub85c\uc9c1\uc194\ubc84 \ubc0f \ucd5c\uc885\uc694\uc18c\uc758 \uc704\ud5d8\uace0\uc7a5\ub960\uc744 \ubc18\uc601\ud55c\ub2e4. \uc9c4\ub2e8\uc8fc\uae30, Proof Test \uc8fc\uae30, \uc218\ub9ac\uc2dc\uac04, \uc9c4\ub2e8\ubc94\uc704 \ubc0f CCF\ub97c \ud3ec\ud568\ud55c\ub2e4. \uc800\uc218\uc694 \uae30\ub2a5\uc740 PFD\ub97c \uacc4\uc0b0\ud558\uace0 \uace0\uc218\uc694 \ub610\ub294 \uc5f0\uc18d\uc6b4\uc804 \uae30\ub2a5\uc740 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4. \uacc4\uc0b0\uacb0\uacfc\ub294 SIL \ubc94\uc704\ubfd0 \uc544\ub2c8\ub77c \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \uc124\uc815\ud55c \uac1c\ubcc4 \uc815\ub7c9\ubaa9\ud45c\uc640 \ube44\uad50\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{8\ub2e8\uacc4: \ud1b5\ud569\uc2dc\ud5d8\uacfc Verification\uc744 \uc218\ud589\ud55c\ub2e4}\n\n\uc785\ub825 \uc870\ud569\uc5d0 \ub530\ub978 \ucd9c\ub825\uc751\ub2f5\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \uc785\ub825 \uc601\uc5ed\uc744 \ubd84\ud560\ud558\uace0 \uacbd\uacc4\uac12\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \ube44\uc815\uc0c1 \uc785\ub825\uacfc \uba85\uc138\ub418\uc9c0 \uc54a\uc740 \uc785\ub825\uc5d0 \ub300\ud55c \ub3d9\uc791\ub3c4 \ud655\uc778\ud55c\ub2e4. \ub192\uc740 SIL\uc5d0\uc11c\ub294 \uc6b4\uc804 \uacbd\uacc4\uc5d0\uc11c \uc5ec\ub7ec \uc911\uc694 \ub17c\ub9ac\uac00 \ub3d9\uc2dc\uc5d0 \uc791\ub3d9\ud558\ub294 \uc870\uac74\uc744 \uc2dc\ud5d8\ud55c\ub2e4. \uc2dc\ud5d8\ubc84\uc804, \uc2dc\ud5d8\ub3c4\uad6c, \ud569\uaca9\uae30\uc900, \uacb0\uacfc \ubc0f \ubd88\uc77c\uce58 \uc0ac\ud56d\uc744 \uae30\ub85d\ud55c\ub2e4.\n\n\\subsection{9\ub2e8\uacc4: Validation\uc73c\ub85c \uc804\uccb4 \uc694\uad6c\uc0ac\ud56d\uc744 \ud655\uc778\ud55c\ub2e4}\n\nSRS\uc758 \uac01 \uc694\uad6c\uc0ac\ud56d\uc744 \uacc4\uc0b0\uc11c, \uac80\ud1a0\uc11c \ubc0f \uc2dc\ud5d8\uc131\uc801\uc11c\uc640 \uc5f0\uacb0\ud55c\ub2e4. \uae30\ub2a5\uc2dc\ud5d8, \ud658\uacbd\uc2dc\ud5d8, \uac04\uc12d\uc2dc\ud5d8 \ubc0f \uace0\uc7a5\uc0bd\uc785\uc2dc\ud5d8\uc744 \uc218\ud589\ud55c\ub2e4. \ubc1c\uacac\ub41c \ubb38\uc81c\ub294 \ud604\uc0c1, \uc6d0\uc778, \uc870\uce58 \ubc0f \uc7ac\uc2dc\ud5d8 \uacb0\uacfc\uae4c\uc9c0 \ub2eb\uc544\uc57c \ud55c\ub2e4. Validation\uc740 \uac1c\ubcc4 \uc2dc\ud5d8\uc758 \uc9d1\ud569\uc774 \uc544\ub2c8\ub77c \uc804\uccb4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc5d0 \ub300\ud55c \uc885\ud569 \ud655\uc778\uc774\ub2e4.\n\n\\subsection{10\ub2e8\uacc4: \uc6b4\uc804\uacfc \uc720\uc9c0\ubcf4\uc218\ub85c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4}\n\n\uc6b4\uc804\uc808\ucc28\uc640 \uc815\ube44\uc808\ucc28\ub97c \uba85\ud655\ud788 \ud55c\ub2e4. Proof Test\ub97c \uc815\ud574\uc9c4 \uc8fc\uae30\ub85c \uc218\ud589\ud55c\ub2e4. \uc2e4\uc81c Demand \ud69f\uc218, \uace0\uc7a5, \uc624\ub3d9\uc791, \uc218\ub9ac \ubc0f \uad50\uccb4\uc774\ub825\uc744 \uae30\ub85d\ud55c\ub2e4. \uae30\ub85d\uc744 \uc8fc\uae30\uc801\uc73c\ub85c \uac80\ud1a0\ud558\uc5ec \ucd5c\ucd08 SIL \uac00\uc815\uacfc \uace0\uc7a5\ub960 \uac00\uc815\uc774 \uc801\uc808\ud588\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4. \uc811\uadfc\uad8c\ud55c\uacfc \uc6b4\uc804\uc790 \uad50\uc721\ub3c4 \uad00\ub9ac\ud55c\ub2e4.\n\n\\subsection{11\ub2e8\uacc4: \ubcc0\uacbd\uc744 \ud1b5\uc81c\ud558\uace0 \uc7ac\uac80\uc99d\ud55c\ub2e4}\n\n\ubaa8\ub4e0 \ubcc0\uacbd\uc740 \ud615\uc0c1\uad00\ub9ac \ub300\uc0c1\uc774\ub2e4. \ubcc0\uacbd\uc0ac\uc720\uc640 \uc601\ud5a5\ubd84\uc11d\uc744 \uae30\ub85d\ud55c\ub2e4. \ubcc0\uacbd\ub41c \ubaa8\ub4c8\ubfd0 \uc544\ub2c8\ub77c \uc601\ud5a5\uc744 \ubc1b\ub294 \uc778\ud130\ud398\uc774\uc2a4\uc640 \uad00\ub828 \ubaa8\ub4c8\ub3c4 \uc7ac\uac80\uc99d\ud55c\ub2e4. \ubcc0\uacbd\uc73c\ub85c SRS, \uc2e0\ub8b0\ub3c4 \uacc4\uc0b0, \uc2dc\ud5d8\ubc94\uc704 \ub610\ub294 Safety Manual\uc774 \ub2ec\ub77c\uc9c0\uba74 \uad00\ub828 \ubb38\uc11c\ub97c \ubaa8\ub450 \uac31\uc2e0\ud55c\ub2e4.\n\n\\subsection{12\ub2e8\uacc4: \uc801\ud569\uc131 \uc785\uc99d\uc790\ub8cc\ub97c \uc644\uc131\ud55c\ub2e4}\n\nIEC 61508 \uc694\uad6c\uc0ac\ud56d\ubcc4\ub85c \uc99d\uac70\ubb38\uc11c\ub97c \uc5f0\uacb0\ud55c\ub2e4. \uc99d\uac70\uc5d0\ub294 SRS, \uc124\uacc4\uc11c, FMEA, CCF \ubd84\uc11d\uc11c, PFD\/PFH \uacc4\uc0b0\uc11c, \uc2dc\ud5d8\uacc4\ud68d\uc11c, \uc2dc\ud5d8\uc131\uc801\uc11c, Validation \ubcf4\uace0\uc11c, Safety Manual, \ubcc0\uacbd\uc774\ub825 \ubc0f \uc6b4\uc804\uae30\ub85d\uc774 \ud3ec\ud568\ub41c\ub2e4. \ucd5c\uc885 \ubaa9\uc801\uc740 ``\ud45c\uc900\uc744 \uc801\uc6a9\ud588\ub2e4''\uace0 \uc120\uc5b8\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, \uac01 \uc694\uad6c\uc0ac\ud56d\uc774 \ucda9\uc871\ub418\uc5c8\uc74c\uc744 \ucd94\uc801 \uac00\ub2a5\ud55c \uc790\ub8cc\ub85c \uc785\uc99d\ud558\ub294 \uac83\uc774\ub2e4.\n\n\\begin{keybox}{\ucd5c\uc885 \ud750\ub984 \uc694\uc57d}\n\uc704\ud5d8\ubd84\uc11d\uacfc SIL \uc124\uc815\uc5d0\uc11c \uc2dc\uc791\ud55c\ub2e4. SRS\ub85c \uc548\uc804\uae30\ub2a5\uc744 \uba85\ud655\ud788 \ud55c\ub2e4. \uad6c\uc870\ud654, \ubaa8\ub4c8\ud654, \ubd84\ub9ac, \uc911\ubcf5 \ubc0f \ub2e4\uc591\uc131\uc73c\ub85c \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ubc29\uc5b4\ud55c\ub2e4. SFF\uc640 HFT\ub85c \ud558\ub4dc\uc6e8\uc5b4 \uad6c\uc870\ub97c \uac80\ud1a0\ud55c\ub2e4. PFD \ub610\ub294 PFH\ub85c \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \ubaa9\ud45c\ub97c \ud655\uc778\ud55c\ub2e4. Verification\uacfc Validation\uc73c\ub85c \uc694\uad6c\uc0ac\ud56d \ucda9\uc871\uc744 \uc785\uc99d\ud55c\ub2e4. \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218 \ubc0f \ubcc0\uacbd\uad00\ub9ac\ub85c \ub2ec\uc131\ub41c \uc548\uc804\ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4.\n\\end{keybox}\n\n\\section*{\ucc38\uace0\ubb38\ud5cc}\n\\addcontentsline{toc}{section}{\ucc38\uace0\ubb38\ud5cc}\n\n\\begin{thebibliography}{9}\n\\bibitem{smith2016}\nDavid J. Smith and Kenneth G. L. Simpson,\n\\textit{The Safety Critical Systems Handbook: A Straightforward Guide to Functional Safety, IEC 61508, IEC 61511 and Related Guidance},\n4th ed., Butterworth-Heinemann, 2016, Chapter 3, pp. 57--78.\n\\end{thebibliography}\n\n\\end{document}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>IEC 61508 Part 2 \uae30\ubc18 \uc548\uc804\uad00\ub828 \ud558\ub4dc\uc6e8\uc5b4 \ubc0f \uc2dc\uc2a4\ud15c \uc124\uacc4 \uc815\ub9ac – \ub2e8\uc77c \ud504\ub808\uc784 Functional Safety Study Note IEC 61508 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