{"id":9420,"date":"2026-08-28T11:19:30","date_gmt":"2026-08-28T02:19:30","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=9420"},"modified":"2026-08-28T11:19:32","modified_gmt":"2026-08-28T02:19:32","slug":"the-safety-critical-systems-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/the-safety-critical-systems-%ec%a0%95%eb%a6%ac\/","title":{"rendered":"The Safety Critical Systems \uc815\ub9ac"},"content":{"rendered":"\n\n\n\n \n \n IEC 61508 \uae30\ub2a5\uc548\uc804 \ud750\ub984 \uc815\ub9ac<\/title>\n <style>\n :root{\n --navy:#1F3A5F;\n --navy-2:#284F7A;\n --bluegray:#EAF0F6;\n --softgreen:#EAF5EE;\n --softyellow:#FFF7DD;\n --softred:#FCEBEC;\n --line:#CAD5E1;\n --text:#1F2933;\n --muted:#5B6775;\n --bg:#F5F7FA;\n --white:#FFFFFF;\n --shadow:0 10px 28px rgba(31,58,95,.10);\n }\n *{box-sizing:border-box}\n html{scroll-behavior:smooth}\n body{\n margin:0;\n font-family:\"Noto Sans KR\",\"Malgun Gothic\",\"Apple SD Gothic Neo\",sans-serif;\n color:var(--text);\n background:var(--bg);\n line-height:1.75;\n word-break:keep-all;\n }\n a{color:var(--navy);text-decoration:none}\n a:hover{text-decoration:underline}\n .page{\n width:min(1500px, 96vw);\n margin:0 auto;\n padding:24px 0 60px;\n }\n .hero{\n background:linear-gradient(135deg,var(--navy),var(--navy-2));\n color:#fff;\n border-radius:18px;\n padding:40px 42px;\n box-shadow:var(--shadow);\n }\n .hero h1{\n margin:0;\n font-size:clamp(2rem,4vw,3.8rem);\n line-height:1.2;\n letter-spacing:-.03em;\n }\n .hero .subtitle{\n margin-top:14px;\n font-size:clamp(1rem,1.7vw,1.35rem);\n opacity:.95;\n }\n .note{\n margin:22px 0;\n padding:18px 20px;\n border:1px solid var(--navy);\n border-left:6px solid var(--navy);\n background:var(--bluegray);\n border-radius:12px;\n }\n .toc{\n background:var(--white);\n border-radius:16px;\n padding:22px 24px;\n box-shadow:var(--shadow);\n margin:22px 0;\n }\n .toc h2{margin-top:0}\n .toc-grid{\n display:grid;\n grid-template-columns:repeat(auto-fit,minmax(260px,1fr));\n gap:10px 18px;\n }\n .toc a{\n display:block;\n padding:10px 12px;\n border-radius:10px;\n background:#F8FAFC;\n border:1px solid #E6ECF2;\n font-weight:700;\n }\n main{\n background:var(--white);\n border-radius:18px;\n padding:34px 42px;\n box-shadow:var(--shadow);\n }\n section{scroll-margin-top:20px}\n h2{\n margin:2.4em 0 .8em;\n padding-bottom:.35em;\n border-bottom:3px solid var(--navy);\n color:var(--navy);\n font-size:clamp(1.55rem,2.4vw,2.25rem);\n line-height:1.35;\n letter-spacing:-.02em;\n }\n h3{\n margin:1.8em 0 .55em;\n color:var(--navy-2);\n font-size:clamp(1.2rem,1.8vw,1.6rem);\n }\n h4{\n margin:1.35em 0 .35em;\n color:var(--navy);\n font-size:1.1rem;\n }\n p{margin:.5em 0 1em}\n ul,ol{padding-left:1.5em}\n li{margin:.3em 0}\n .key{\n font-weight:800;\n color:var(--navy);\n }\n .flow{\n display:flex;\n flex-wrap:wrap;\n gap:10px;\n align-items:center;\n margin:18px 0;\n }\n .flow .step{\n flex:1 1 180px;\n min-width:160px;\n background:var(--softgreen);\n border:1px solid #BFD9C9;\n border-radius:12px;\n padding:14px 15px;\n text-align:center;\n font-weight:800;\n }\n .flow .arrow{\n font-size:1.55rem;\n color:var(--navy);\n font-weight:800;\n }\n .formula{\n margin:18px 0;\n padding:18px 20px;\n border-radius:12px;\n background:#F8FAFC;\n border:1px solid var(--line);\n text-align:center;\n font-family:\"Times New Roman\",serif;\n font-size:1.18rem;\n overflow-x:auto;\n }\n .two-column{\n display:grid;\n grid-template-columns:repeat(2,minmax(0,1fr));\n gap:18px;\n margin:18px 0;\n }\n .card{\n border:1px solid var(--line);\n border-radius:14px;\n padding:18px;\n background:#FCFDFE;\n }\n .card h4{margin-top:0}\n .table-wrap{\n width:100%;\n overflow-x:auto;\n margin:18px 0 24px;\n border:1px solid var(--line);\n border-radius:12px;\n }\n table{\n width:100%;\n min-width:780px;\n border-collapse:collapse;\n background:#fff;\n }\n th,td{\n padding:13px 14px;\n border-bottom:1px solid #E5EAF0;\n vertical-align:top;\n text-align:left;\n }\n th{\n background:var(--bluegray);\n color:var(--navy);\n font-weight:800;\n }\n tr:last-child td{border-bottom:none}\n .summary{\n display:grid;\n grid-template-columns:repeat(auto-fit,minmax(220px,1fr));\n gap:14px;\n margin:20px 0;\n }\n .summary .item{\n border-radius:13px;\n padding:16px;\n background:var(--softyellow);\n border:1px solid #EADDA9;\n }\n .summary .item strong{color:var(--navy)}\n .printbar{\n position:sticky;\n top:8px;\n z-index:20;\n display:flex;\n justify-content:flex-end;\n gap:10px;\n margin-bottom:12px;\n }\n button{\n border:none;\n border-radius:10px;\n padding:10px 14px;\n background:var(--navy);\n color:#fff;\n font-weight:800;\n cursor:pointer;\n box-shadow:0 4px 12px rgba(31,58,95,.18);\n }\n button:hover{background:var(--navy-2)}\n .footer-note{\n margin-top:38px;\n font-size:.95rem;\n color:var(--muted);\n text-align:center;\n }\n @media (max-width:900px){\n .page{width:100%;padding:0}\n .hero,main,.toc{border-radius:0}\n .hero{padding:28px 22px}\n main{padding:24px 18px}\n .toc{margin:0;padding:20px 18px}\n .two-column{grid-template-columns:1fr}\n .flow .arrow{display:none}\n table{min-width:680px}\n .printbar{top:0;padding:8px;background:rgba(245,247,250,.92)}\n }\n @media print{\n body{background:#fff}\n .page{width:100%;padding:0}\n .printbar,.toc{display:none}\n .hero,main{box-shadow:none;border-radius:0}\n .hero{background:#fff;color:#000;padding:0 0 18px;border-bottom:2px solid #000}\n .hero h1,.hero .subtitle{color:#000}\n main{padding:0}\n h2{break-after:avoid}\n .table-wrap{overflow:visible}\n table{min-width:0}\n a{color:#000;text-decoration:none}\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"page\">\n <div class=\"printbar\">\n <button onclick=\"window.print()\">\uc778\uc1c4 \/ PDF \uc800\uc7a5<\/button>\n <\/div>\n\n <header class=\"hero\">\n <h1>IEC 61508 \uae30\ub2a5\uc548\uc804 \ud750\ub984 \uc815\ub9ac<\/h1>\n <div class=\"subtitle\">Chapter 1 \u2192 Chapter 2 \u2192 Chapter 5 \u2192 Chapter 3 \u2192 Chapter 4<\/div>\n <\/header>\n\n <div class=\"note\">\n <strong>\ud559\uc2b5 \ubaa9\uc801<\/strong><br>\n \ubcf8 \ubb38\uc11c\ub294 <em>The Safety Critical Systems Handbook<\/em>\uc758 Chapter 1, 2, 5, 3, 4\ub97c \uae30\ub2a5\uc548\uc804\uc758 \uc2e4\uc81c \uc0ac\uace0 \ud750\ub984\uc5d0 \ub9de\ucd94\uc5b4 \uc7ac\ubc30\uc5f4\ud55c \uac83\uc774\ub2e4.\n \uc804\uccb4 \ud750\ub984\uc740 <strong>\uc704\ud5d8 \uc778\uc2dd \u2192 \ubaa9\ud45c SIL \uacb0\uc815 \u2192 \uc815\ub7c9\uc801 \uc2e0\ub8b0\ub3c4 \uacc4\uc0b0 \u2192 \ud558\ub4dc\uc6e8\uc5b4\u00b7\uc2dc\uc2a4\ud15c \uad6c\ud604 \u2192 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\u00b7\uac80\uc99d<\/strong>\uc774\ub2e4.\n <\/div>\n\n <nav class=\"toc\">\n <h2>\ubaa9\ucc28<\/h2>\n <div class=\"toc-grid\">\n <a href=\"#overall\">1. \uc804\uccb4 \ud750\ub984<\/a>\n <a href=\"#ch1\">2. Chapter 1: \uc548\uc804\ubb34\uacb0\uc131<\/a>\n <a href=\"#ch2\">3. Chapter 2: \ubaa9\ud45c SIL \uacb0\uc815<\/a>\n <a href=\"#ch5\">4. Chapter 5: \uc815\ub7c9\uc801 \uc2e0\ub8b0\ub3c4<\/a>\n <a href=\"#ch3\">5. Chapter 3: \ud558\ub4dc\uc6e8\uc5b4\u00b7\uc2dc\uc2a4\ud15c<\/a>\n <a href=\"#ch4\">6. Chapter 4: \uc18c\ud504\ud2b8\uc6e8\uc5b4<\/a>\n <a href=\"#integration\">7. \ub2e4\uc12f Chapter\uc758 \ud1b5\ud569 \uad00\uacc4<\/a>\n <a href=\"#exam\">8. \uae30\uc220\uc0ac \ub2f5\uc548\uc6a9 \ud575\uc2ec \uc694\uc57d<\/a>\n <\/div>\n <\/nav>\n\n <main>\n <section id=\"overall\">\n <h2>1. \uc804\uccb4 \ud750\ub984<\/h2>\n\n <h3>1.1 \ud559\uc2b5 \uc21c\uc11c\uc640 \ud575\uc2ec \uc9c8\ubb38<\/h3>\n <div class=\"table-wrap\">\n <table>\n <thead>\n <tr>\n <th>\uc21c\uc11c<\/th>\n <th>Chapter<\/th>\n <th>\ud575\uc2ec \uc9c8\ubb38<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr><td>1<\/td><td>Chapter 1<\/td><td>\uc65c \uc548\uc804\ubb34\uacb0\uc131\uacfc SIL\uc774 \ud544\uc694\ud55c\uac00?<\/td><\/tr>\n <tr><td>2<\/td><td>Chapter 2<\/td><td>\uc5b4\ub5a4 \uc548\uc804\uae30\ub2a5\uc5d0 \uc5b4\ub290 SIL\uc744 \ubd80\uc5ec\ud560 \uac83\uc778\uac00?<\/td><\/tr>\n <tr><td>3<\/td><td>Chapter 5<\/td><td>\uc124\uacc4\ud55c \uc2dc\uc2a4\ud15c\uc774 \uc815\ub7c9\uc801 \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\ub294\uac00?<\/td><\/tr>\n <tr><td>4<\/td><td>Chapter 3<\/td><td>\ud558\ub4dc\uc6e8\uc5b4\uc640 \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc744 \uc5b4\ub5bb\uac8c \uc124\uacc4\u00b7\uac80\uc99d\ud560 \uac83\uc778\uac00?<\/td><\/tr>\n <tr><td>5<\/td><td>Chapter 4<\/td><td>\uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uc5b4\ub5bb\uac8c \ubc29\uc9c0\ud560 \uac83\uc778\uac00?<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>1.2 \uae30\ub2a5\uc548\uc804 \uc804\uccb4 \uad00\uacc4\ub3c4<\/h3>\n <div class=\"flow\">\n <div class=\"step\">Chapter 1<br>\uc704\ud5d8\uacfc \uc548\uc804\ubb34\uacb0\uc131<\/div>\n <div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">Chapter 2<br>\ubaa9\ud45c SIL \uacb0\uc815<\/div>\n <div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">Chapter 5<br>\uc2e0\ub8b0\ub3c4 \ubaa8\ub378\ub9c1<\/div>\n <div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">Chapter 3<br>\ud558\ub4dc\uc6e8\uc5b4\u00b7\uc2dc\uc2a4\ud15c<\/div>\n <div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">Chapter 4<br>\uc18c\ud504\ud2b8\uc6e8\uc5b4<\/div>\n <\/div>\n\n <div class=\"note\">\n <strong>\ud575\uc2ec<\/strong><br>\n Chapter 1\uacfc 2\uac00 \u201c\uc5bc\ub9c8\ub098 \uc548\uc804\ud574\uc57c \ud558\ub294\uac00\u201d\ub97c \uc815\ud55c\ub2e4.\n Chapter 5\ub294 \u201c\uc218\uce58\uc801\uc73c\ub85c \uac00\ub2a5\ud55c\uac00\u201d\ub97c \uac80\ud1a0\ud55c\ub2e4.\n Chapter 3\uacfc 4\ub294 \uac01\uac01 \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc18c\ud504\ud2b8\uc6e8\uc5b4\uac00 \uadf8 \ubaa9\ud45c\ub97c \uc2e4\uc81c\ub85c \ub9cc\uc871\ud558\ub3c4\ub85d \uad6c\ud604\ud558\uace0 \uc785\uc99d\ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"ch1\">\n <h2>2. Chapter 1: \uc548\uc804\ubb34\uacb0\uc131\uc774 \uc65c \ud544\uc694\ud55c\uac00<\/h2>\n\n <h3>2.1 Zero Risk\ub294 \uc874\uc7ac\ud558\uc9c0 \uc54a\ub294\ub2e4<\/h3>\n <p>\uae30\ub2a5\uc548\uc804\uc758 \ucd9c\ubc1c\uc810\uc740 <span class=\"key\">\uc704\ud5d8\uc744 \uc644\uc804\ud788 \uc81c\uac70\ud560 \uc218 \uc5c6\ub2e4\ub294 \uc0ac\uc2e4<\/span>\uc774\ub2e4.<\/p>\n <ul>\n <li>\ud558\ub4dc\uc6e8\uc5b4\uc5d0\ub294 \ubb3c\ub9ac\uc801 \uace0\uc7a5\uc774 \ubc1c\uc0dd\ud55c\ub2e4.<\/li>\n <li>\uc0ac\ub78c\uc740 \uc2e4\uc218\ud55c\ub2e4.<\/li>\n <li>\uc18c\ud504\ud2b8\uc6e8\uc5b4\ub294 \ubaa8\ub4e0 \uc6b4\uc804\uc0c1\ud669\uc744 \uc644\ubcbd\ud788 \uc608\uce21\ud560 \uc218 \uc5c6\ub2e4.<\/li>\n <\/ul>\n <p>\ub530\ub77c\uc11c \ubaa9\ud45c\ub294 \uc704\ud5d8\uc744 0\uc73c\ub85c \ub9cc\ub4dc\ub294 \uac83\uc774 \uc544\ub2c8\ub77c <span class=\"key\">\ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc218\uc900\uae4c\uc9c0 \uc800\uac10\ud558\ub294 \uac83<\/span>\uc774\ub2e4.<\/p>\n <div class=\"formula\">\ud604\uc7ac \uc704\ud5d8 \u2192 \uc704\ud5d8 \uc800\uac10 \u2192 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc794\uc5ec\uc704\ud5d8<\/div>\n\n <h3>2.2 \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5<\/h3>\n <div class=\"table-wrap\">\n <table>\n <thead>\n <tr><th>\uad6c\ubd84<\/th><th>\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5<\/th><th>\uccb4\uacc4\uc801 \uace0\uc7a5<\/th><\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>\ubc1c\uc0dd \ud2b9\uc131<\/td>\n <td>\ubd80\ud488\uc758 \uc5f4\ud654\u00b7\ud30c\uc190\u00b7\ubb3c\ub9ac\uc801 \uacb0\ud568\uc73c\ub85c \ubc1c\uc0dd<\/td>\n <td>\uc694\uad6c\uc0ac\ud56d\u00b7\uc124\uacc4\u00b7\uc18c\ud504\ud2b8\uc6e8\uc5b4\u00b7\uc808\ucc28\uc758 \uc624\ub958\ub85c \ubc1c\uc0dd<\/td>\n <\/tr>\n <tr>\n <td>\uc608\uc2dc<\/td>\n <td>\uc13c\uc11c \ub2e8\uc120, \ub9b4\ub808\uc774 \uc811\uc810\ubd88\ub7c9, \ubc38\ube0c \uace0\ucc29<\/td>\n <td>\uc798\ubabb\ub41c Trip \uc870\uac74, \ub17c\ub9ac \ub204\ub77d, \ubcc0\uacbd \uc601\ud5a5\ubd84\uc11d \ub204\ub77d<\/td>\n <\/tr>\n <tr>\n <td>\ud3c9\uac00 \ubc29\ubc95<\/td>\n <td>\uace0\uc7a5\ub960\uacfc \ud655\ub960\uc744 \uc774\uc6a9\ud55c \uc815\ub7c9\uc801 \ud3c9\uac00<\/td>\n <td>\uc124\uacc4\u00b7\uac80\ud1a0\u00b7\uc2dc\ud5d8\u00b7\uad00\ub9ac \uc808\ucc28\uc5d0 \uc758\ud55c \uc815\uc131\uc801 \ud1b5\uc81c<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n <div class=\"formula\">\n \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5 \u2192 \uc815\ub7c9\uc801 \ud3c9\uac00<br>\n \uccb4\uacc4\uc801 \uace0\uc7a5 \u2192 \uc815\uc131\uc801 \uc124\uacc4\u00b7\uad00\ub9ac \uaddc\uc728\n <\/div>\n\n <h3>2.3 SIL\uc758 \ub450 \uac00\uc9c0 \uc758\ubbf8<\/h3>\n <p><span class=\"key\">SIL(Safety Integrity Level)<\/span>\uc740 \ub2e8\uc21c\ud55c \ud655\ub960 \ub4f1\uae09\uc774 \uc544\ub2c8\ub2e4.<\/p>\n <ol>\n <li><strong>\uc815\ub7c9\uc801 \uc758\ubbf8:<\/strong> \uc704\ud5d8\uace0\uc7a5\ud655\ub960 \ub610\ub294 \uc704\ud5d8\uace0\uc7a5\ube48\ub3c4\uc758 \ubaa9\ud45c<\/li>\n <li><strong>\uc815\uc131\uc801 \uc758\ubbf8:<\/strong> \uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \uac80\ud1a0, \uc2dc\ud5d8 \ubc0f \uad00\ub9ac\uc758 \uc5c4\uaca9\ub3c4<\/li>\n <\/ol>\n <p>SIL 3\uc744 \uc8fc\uc7a5\ud558\ub824\uba74 \uacc4\uc0b0\uac12\ubfd0 \uc544\ub2c8\ub77c SIL 3 \uc218\uc900\uc758 \uc0dd\uba85\uc8fc\uae30, \uc544\ud0a4\ud14d\ucc98, \uac80\uc99d \ubc0f \uad00\ub9ac \uc694\uad6c\ub3c4 \ucda9\uc871\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n <h3>2.4 \uc548\uc804 \uc0dd\uba85\uc8fc\uae30<\/h3>\n <div class=\"flow\">\n <div class=\"step\">\uac1c\ub150\u00b7\ubc94\uc704<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\uc704\ud5d8\uc6d0 \uc2dd\ubcc4<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\uc548\uc804\uae30\ub2a5\u00b7SIL \uacb0\uc815<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">SRS<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\uc124\uacc4\u00b7\uc81c\uc791<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\uc124\uce58\u00b7\uc2dc\uc6b4\uc804<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">Validation<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\uc6b4\uc804\u00b7\uc815\ube44<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\ubcc0\uacbd<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\ud3d0\uae30<\/div>\n <\/div>\n\n <div class=\"note\">\n <strong>Chapter 1\uc758 \uacb0\ub860<\/strong><br>\n \uc704\ud5d8\uc744 \uc2dd\ubcc4\ud558\uace0 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \ubaa9\ud45c\ub97c \uc815\ud55c \ub4a4, \uc0dd\uba85\uc8fc\uae30 \uc804\uccb4\uc5d0\uc11c \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ud568\uaed8 \uad00\ub9ac\ud574\uc57c \ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"ch2\">\n <h2>3. Chapter 2: \ubaa9\ud45c SIL\uc744 \uc5b4\ub5bb\uac8c \uacb0\uc815\ud558\ub294\uac00<\/h2>\n\n <h3>3.1 \uc704\ud5d8 \uc2dc\ub098\ub9ac\uc624 \uc815\uc758<\/h3>\n <div class=\"formula\">\uc555\ub825 \uc0c1\uc2b9 \u2192 \uc6a9\uae30 \ud30c\uc5f4 \u2192 \uc720\ud574\ubb3c\uc9c8 \ub204\ucd9c \u2192 \uc0ac\ub9dd \uac00\ub2a5\uc131<\/div>\n <p>\ud3c9\uac00 \uc694\uc18c\ub294 \uc0ac\uace0 \uacb0\uacfc\uc758 \uc2ec\uac01\ub3c4, \ubc1c\uc0dd \uac00\ub2a5\uc131, \ub178\ucd9c \uac00\ub2a5\uc131, \ud68c\ud53c \uac00\ub2a5\uc131, \uae30\uc874 \ubcf4\ud638\uacc4\uce35\uc758 \uc131\ub2a5, \uac1c\uc778\uc704\ud5d8\uacfc \uc0ac\ud68c\uc801 \uc704\ud5d8\uc774\ub2e4.<\/p>\n\n <h3>3.2 \ud544\uc694\ud55c \uc704\ud5d8\uc800\uac10\ub7c9<\/h3>\n <div class=\"formula\">RRF<sub>required<\/sub> = \ubcf4\ud638 \uc804 \uc704\ud5d8 \u00f7 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc704\ud5d8<\/div>\n <p>\uc608\ub97c \ub4e4\uc5b4 \ubcf4\ud638 \uc804 \uc0ac\uace0\ube48\ub3c4\uac00 \uc5f0\uac04 10<sup>-2<\/sup>\uc774\uace0 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \ubaa9\ud45c\uac00 \uc5f0\uac04 10<sup>-5<\/sup>\ub77c\uba74 RRF<sub>required<\/sub>\ub294 10<sup>3<\/sup>\uc774\ub2e4.<\/p>\n\n <h3>3.3 \ubcf4\ud638\uacc4\uce35\uc758 \ubd84\ub2f4<\/h3>\n <div class=\"formula\">\uae30\ubcf8 \uacf5\uc815\uc81c\uc5b4 + \uacbd\ubcf4\u00b7\uc6b4\uc804\uc790 \uc870\uce58 + \uae30\uacc4\uc801 \ubcf4\ud638\uc7a5\uce58 + SIF + \ube44\uc0c1\ub300\uc751<\/div>\n <p>\uac01 \ubcf4\ud638\uacc4\uce35\uc740 \ub3c5\ub9bd\uc801\uc774\uc5b4\uc57c \ud558\uba70, SIF\uac00 \ub2f4\ub2f9\ud574\uc57c \ud560 \uc794\uc5ec \uc704\ud5d8\uc800\uac10\ub7c9\uc744 \uae30\uc900\uc73c\ub85c \ubaa9\ud45c SIL\uc744 \uc815\ud55c\ub2e4.<\/p>\n\n <h3>3.4 \ubaa9\ud45c SIL \uacb0\uc815 \ubc29\ubc95<\/h3>\n <div class=\"table-wrap\">\n <table>\n <thead><tr><th>\ubc29\ubc95<\/th><th>\uac1c\ub150<\/th><th>\ud2b9\uc9d5<\/th><\/tr><\/thead>\n <tbody>\n <tr>\n <td>\uc815\ub7c9\uc801 \ubc29\ubc95<\/td>\n <td>\ucd08\uae30\uc0ac\uac74\ube48\ub3c4, \uc0ac\uace0\uc804\ud30c\ud655\ub960, \ubcf4\ud638\uacc4\uce35 \uc2e4\ud328\ud655\ub960\uc744 \uacc4\uc0b0<\/td>\n <td>\uba85\ud655\ud55c \uc218\uce58\ubaa9\ud45c\ub97c \uc81c\uc2dc\ud560 \uc218 \uc788\uc73c\ub098 \ub370\uc774\ud130\uac00 \ud544\uc694\ud568<\/td>\n <\/tr>\n <tr>\n <td>LOPA<\/td>\n <td>\uc0ac\uace0 \uc2dc\ub098\ub9ac\uc624\ubcc4 \ub3c5\ub9bd\ubcf4\ud638\uacc4\uce35\uc744 \ub2e8\uacc4\uc801\uc73c\ub85c \ud3c9\uac00<\/td>\n <td>\ud604\uc7a5 \uc801\uc6a9\uc131\uc774 \ub192\uace0 \ubcf4\ud638\uacc4\uce35\uc758 \ub3c5\ub9bd\uc131 \ud310\ub2e8\uc774 \uc911\uc694\ud568<\/td>\n <\/tr>\n <tr>\n <td>Risk Graph<\/td>\n <td>\uc2ec\uac01\ub3c4, \ub178\ucd9c\ube48\ub3c4, \ud68c\ud53c \uac00\ub2a5\uc131, \ubc1c\uc0dd \uac00\ub2a5\uc131\uc744 \ubc94\uc8fc\ud654<\/td>\n <td>\uac04\ud3b8\ud558\uc9c0\ub9cc \ud310\ub2e8\uc758 \uc8fc\uad00\uc131\uc774 \ucee4\uc9c8 \uc218 \uc788\uc74c<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h3>3.5 SIL\uc740 \uc548\uc804\uae30\ub2a5\ubcc4\ub85c \uacb0\uc815\ud55c\ub2e4<\/h3>\n <p>SIL\uc740 \uc804\uccb4 PLC\ub098 SIS\uc5d0 \uc77c\uad04 \ubd80\uc5ec\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \uac01 <span class=\"key\">SIF<\/span>\ubcc4\ub85c \uacb0\uc815\ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uace0\uc555 \ucc28\ub2e8\uc740 SIL 2, \uace0\uc628 \ucc28\ub2e8\uc740 SIL 1, \ud654\uc5fc\uac10\uc2dc\ub294 SIL 3\uc77c \uc218 \uc788\ub2e4.<\/p>\n\n <h3>3.6 ALARP\uc640 \uae30\ub2a5\uc548\uc804\uad00\ub9ac<\/h3>\n <p>\ubaa9\ud45c SIL\uc744 \ub9cc\uc871\ud558\ub354\ub77c\ub3c4 \ucd94\uac00 \uc704\ud5d8\uc800\uac10\uc774 \ud569\ub9ac\uc801\uc73c\ub85c \uc2e4\ud589 \uac00\ub2a5\ud558\ub2e4\uba74 \uac80\ud1a0\ud574\uc57c \ud55c\ub2e4. \uc5ed\ud560\uacfc \ucc45\uc784, \uc5ed\ub7c9, \ub3c5\ub9bd \uac80\ud1a0, \ubb38\uc11c\uccb4\uacc4, \ubcc0\uacbd\uad00\ub9ac \ubc0f \uae30\ub2a5\uc548\uc804\ud3c9\uac00\ub3c4 \ud544\uc694\ud558\ub2e4.<\/p>\n\n <div class=\"note\">\n <strong>Chapter 2\uc758 \uacb0\ub860<\/strong><br>\n \uc704\ud5d8\ubd84\uc11d\uc744 \ud1b5\ud574 \uac01 \uc548\uc804\uae30\ub2a5\uc774 \ub2f4\ub2f9\ud574\uc57c \ud560 \uc704\ud5d8\uc800\uac10\ub7c9\uc744 \uc815\ud558\uace0, \uc774\ub97c SIL \ub610\ub294 \uac1c\ubcc4 \uc815\ub7c9\ubaa9\ud45c\ub85c \ud45c\ud604\ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"ch5\">\n <h2>4. Chapter 5: \ubaa9\ud45c SIL\uc744 \uc218\uce58\ub85c \ub9cc\uc871\ud558\ub294\uac00<\/h2>\n\n <h3>4.1 \uc2e0\ub8b0\ub3c4 \ubaa8\ub378\uc758 \uad6c\uc131<\/h3>\n <div class=\"formula\">\uc13c\uc11c \u2192 \ub85c\uc9c1\uc194\ubc84 \u2192 \ucd5c\uc885\uc694\uc18c<\/div>\n <p>\uc815\ub7c9\ud3c9\uac00\uc5d0\ub294 \uc704\ud5d8\uace0\uc7a5\ub960, \uc9c4\ub2e8\ubc94\uc704, \uc790\ub3d9\uc9c4\ub2e8 \uc8fc\uae30, Proof Test \uc8fc\uae30, \uc218\ub9ac\uc2dc\uac04, \uc911\ubcf5 \uad6c\uc131, \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5 \ubc0f \uc6b4\uc804\uc790 \uac1c\uc785\uc774 \ud544\uc694\ud558\ub2e4.<\/p>\n\n <h3>4.2 Reliability Block Diagram<\/h3>\n <div class=\"two-column\">\n <div class=\"card\">\n <h4>\uc9c1\ub82c\uad6c\uc870<\/h4>\n <p>\ubaa8\ub4e0 \uc694\uc18c\uac00 \uc815\uc0c1\uc774\uc5b4\uc57c \uc548\uc804\uae30\ub2a5\uc774 \uc131\uacf5\ud55c\ub2e4. \ud55c \uc694\uc18c\ub9cc \uc2e4\ud328\ud574\ub3c4 \uc804\uccb4 \uc548\uc804\uae30\ub2a5\uc774 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4.<\/p>\n <\/div>\n <div class=\"card\">\n <h4>\ubcd1\ub82c\uad6c\uc870<\/h4>\n <p>\uc5ec\ub7ec \uacbd\ub85c \uc911 \ud544\uc694\ud55c \uc218\ub9cc \uc815\uc0c1\uc774\uc5b4\ub3c4 \uc548\uc804\uae30\ub2a5\uc744 \uc720\uc9c0\ud55c\ub2e4. \uc911\ubcf5\uc740 \ub3c5\ub9bd\uace0\uc7a5\uc5d0\ub294 \ud6a8\uacfc\uac00 \uc788\uc9c0\ub9cc \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5\uc5d0\ub294 \ucde8\uc57d\ud558\ub2e4.<\/p>\n <\/div>\n <\/div>\n\n <h3>4.3 \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5<\/h3>\n <p><span class=\"key\">CCF(Common Cause Failure)<\/span>\ub294 \uc911\ubcf5\ucc44\ub110\uc774 \uac19\uc740 \uc6d0\uc778\uc73c\ub85c \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud558\ub294 \ud604\uc0c1\uc774\ub2e4.<\/p>\n <ul>\n <li>\uacf5\ud1b5 \uc804\uc6d0<\/li>\n <li>\ub3d9\uc77c \ud658\uacbd<\/li>\n <li>\ub3d9\uc77c \uc124\uacc4\uacb0\ud568<\/li>\n <li>\uacf5\ud1b5 \ud1b5\uc2e0\ub9dd<\/li>\n <li>\ub3d9\uc77c \uc815\ube44 \uc624\ub958<\/li>\n <li>\ub3d9\uc77c \uc2dc\ud5d8\uc7a5\ube44<\/li>\n <li>\ub3d9\uc77c \uc18c\ud504\ud2b8\uc6e8\uc5b4<\/li>\n <\/ul>\n\n <h3>4.4 Fault Tree Analysis<\/h3>\n <div class=\"formula\">\uc548\uc804\ucc28\ub2e8 \uc2e4\ud328 = \uc13c\uc11c \uc2e4\ud328 OR \ub85c\uc9c1\uc194\ubc84 \uc2e4\ud328 OR \ubc38\ube0c \uc2e4\ud328<\/div>\n <p>RBD\ub294 \uc131\uacf5\uacbd\ub85c\ub97c \ud45c\ud604\ud558\uace0, FTA\ub294 \uc2e4\ud328\uacbd\ub85c\uc640 \ubcf5\uc7a1\ud55c \uc6d0\uc778\uc870\ud569\uc744 \ud45c\ud604\ud558\ub294 \ub370 \uc720\ub9ac\ud558\ub2e4.<\/p>\n\n <h3>4.5 \uc790\ub3d9\uc9c4\ub2e8\uacfc Proof Test<\/h3>\n <ul>\n <li>\uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uace0\uc7a5: \uc9e7\uc740 \uc2dc\uac04 \ub0b4 \ubc1c\uacac<\/li>\n <li>Proof Test\ub85c \uac80\ucd9c\ub418\ub294 \uace0\uc7a5: \uc2dc\ud5d8\uc8fc\uae30 \ub3d9\uc548 \uc7a0\ubcf5<\/li>\n <li>\uc2e4\uc81c Demand\uc5d0\uc11c\ub9cc \uac80\ucd9c\ub418\ub294 \uace0\uc7a5: \ub354 \uae34 \uc2dc\uac04 \uc7a0\ubcf5 \uac00\ub2a5<\/li>\n <\/ul>\n <p>\uc9c4\ub2e8\ubc94\uc704\uac00 \ub192\uace0 \uc9c4\ub2e8\uc8fc\uae30\uac00 \uc9e7\uc744\uc218\ub85d \ube44\uac00\uc6a9\ub3c4\uac00 \uac10\uc18c\ud55c\ub2e4. \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ud558\uc9c0 \ubabb\ud558\ub294 \uc704\ud5d8\uace0\uc7a5\uc740 Proof Test \uc8fc\uae30\uc758 \uc601\ud5a5\uc744 \ud06c\uac8c \ubc1b\ub294\ub2e4.<\/p>\n\n <h3>4.6 \uc778\uc801\uc694\uc778<\/h3>\n <p>\uc798\ubabb\ub41c Bypass, Proof Test \ud6c4 \ubcf5\uad6c \ub204\ub77d, \uc124\uc815\uac12 \uc624\uc785\ub825, \ube44\uc0c1\uc870\uc791 \uc2e4\ud328 \ubc0f \uc624\uc815\ube44\ub3c4 \uc2e4\ud328\uacbd\ub85c\uac00 \ub420 \uc218 \uc788\ub2e4.<\/p>\n\n <div class=\"note\">\n <strong>Chapter 5\uc758 \uacb0\ub860<\/strong><br>\n \uace0\uc7a5\ub960\ubfd0 \uc544\ub2c8\ub77c \uc911\ubcf5\uad6c\uc870, \uc7a0\ubcf5\uc2dc\uac04, \uc9c4\ub2e8, \uc2dc\ud5d8, \uc218\ub9ac, \uacf5\ud1b5\uc6d0\uc778 \ubc0f \uc778\uc801\uc694\uc778\uc744 \ud558\ub098\uc758 \ubaa8\ub378\uc5d0 \ud3ec\ud568\ud558\uc5ec PFD \ub610\ub294 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"ch3\">\n <h2>5. Chapter 3: \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc2dc\uc2a4\ud15c\uc744 \uc5b4\ub5bb\uac8c \uc124\uacc4\ud560 \uac83\uc778\uac00<\/h2>\n\n <h3>5.1 \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uba85\uc138\uc11c<\/h3>\n <p>SRS\uc5d0\ub294 \uc548\uc804\uae30\ub2a5, \uc548\uc804\uc0c1\ud0dc, Trip \uc870\uac74, \uc751\ub2f5\uc2dc\uac04, Reset \uc870\uac74, \uc6b4\uc804\ubaa8\ub4dc, \uc804\uc6d0 \uc0c1\uc2e4 \uc2dc \ub3d9\uc791, \uc678\ubd80 \uc778\ud130\ud398\uc774\uc2a4, \ud658\uacbd\uc870\uac74, Proof Test \uc694\uad6c \ubc0f \uac01 \uae30\ub2a5\uc758 SIL\uc744 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \ud615\ud0dc\ub85c \uc815\uc758\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n <h3>5.2 \ub3c5\ub9bd\uc131\uacfc \ubd84\ub9ac<\/h3>\n <p>EUC, \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c \ubc0f \uc548\uc804\uc2dc\uc2a4\ud15c \uc0ac\uc774\uc5d0\ub294 \uc804\uc6d0, \ubc30\uc120, \ud1b5\uc2e0 \ubc0f \ubb3c\ub9ac\uc801 \ubd84\ub9ac\uac00 \ud544\uc694\ud558\ub2e4. \ub3c5\ub9bd\uc131\uc744 \uc785\uc99d\ud558\uc9c0 \ubabb\ud558\uba74 \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uae4c\uc9c0 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc73c\ub85c \ud3c9\uac00\ud574\uc57c \ud560 \uc218 \uc788\ub2e4.<\/p>\n\n <h3>5.3 \uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\u00b7\uc9c4\ub2e8<\/h3>\n <ul>\n <li>\uac80\uc99d\ub41c \ubd80\ud488 \uc0ac\uc6a9<\/li>\n <li>\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654<\/li>\n <li>\uace0\uc7a5 \uac80\ucd9c \uc2dc \uc548\uc804\uc0c1\ud0dc \uc804\ud658<\/li>\n <li>Watchdog \uc801\uc6a9<\/li>\n <li>\uba54\ubaa8\ub9ac\u00b7I\/O \uc9c4\ub2e8<\/li>\n <li>EMC\uc640 \ud658\uacbd\uc870\uac74 \uace0\ub824<\/li>\n <li>\uc628\ub77c\uc778 \ubcc0\uacbd \ubc29\uc9c0<\/li>\n <li>\uc6b4\uc804\uc790 \uc624\ub958 \ubc29\uc9c0<\/li>\n <\/ul>\n\n <h3>5.4 SFF\uc640 HFT<\/h3>\n <p><span class=\"key\">SFF<\/span>\ub294 \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uc0c1\ud0dc\ub97c \uc720\ubc1c\ud558\uac70\ub098 \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4.<\/p>\n <div class=\"formula\">SFF = (\uc548\uc804\uace0\uc7a5 + \uac80\ucd9c\ub41c \uc704\ud5d8\uace0\uc7a5) \u00f7 \uc804\uccb4 \uace0\uc7a5<\/div>\n <p><span class=\"key\">HFT<\/span>\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc744 \ud5c8\uc6a9\ud558\uba74\uc11c \uc548\uc804\uae30\ub2a5\uc744 \uc720\uc9c0\ud558\ub294 \ub2a5\ub825\uc774\ub2e4.<\/p>\n <div class=\"table-wrap\">\n <table>\n <thead><tr><th>HFT<\/th><th>\uc758\ubbf8<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>0<\/td><td>\uace0\uc7a5 \ud5c8\uc6a9 \uc5c6\uc74c<\/td><\/tr>\n <tr><td>1<\/td><td>\ud55c \uac1c\uc758 \uace0\uc7a5\uc744 \ud5c8\uc6a9<\/td><\/tr>\n <tr><td>2<\/td><td>\ub450 \uac1c\uc758 \uace0\uc7a5\uc744 \ud5c8\uc6a9<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n <div class=\"formula\">PFD\/PFH \uc815\ub7c9\ubaa9\ud45c \ucda9\uc871 + SFF\/HFT \uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d \ucda9\uc871<\/div>\n\n <h3>5.5 Verification\uacfc Validation<\/h3>\n <div class=\"table-wrap\">\n <table>\n <thead><tr><th>\uad6c\ubd84<\/th><th>Verification<\/th><th>Validation<\/th><\/tr><\/thead>\n <tbody>\n <tr>\n <td>\ud575\uc2ec \uc9c8\ubb38<\/td>\n <td>\uac01 \ub2e8\uacc4\uc758 \uc0b0\ucd9c\ubb3c\uc774 \uc55e \ub2e8\uacc4 \uc694\uad6c\ub97c \ub9cc\uc871\ud558\ub294\uac00?<\/td>\n <td>\uc644\uc131\ub41c \uc2dc\uc2a4\ud15c\uc774 \ucd5c\ucd08 \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 \ub9cc\uc871\ud558\ub294\uac00?<\/td>\n <\/tr>\n <tr>\n <td>\uc8fc\uc694 \uc218\ub2e8<\/td>\n <td>\uac80\ud1a0, \uacc4\uc0b0, \ub2e8\uc704\uc2dc\ud5d8, \ud1b5\ud569\uc2dc\ud5d8<\/td>\n <td>\uc804\uccb4 \uae30\ub2a5\uc2dc\ud5d8, \uace0\uc7a5\uc0bd\uc785, \ud658\uacbd\uc2dc\ud5d8, \ucd5c\uc885 \uc778\uc218<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n <p>\uc2dc\ud5d8\uc5d0\ub294 \uc815\uc0c1\uc870\uac74\ubfd0 \uc544\ub2c8\ub77c \uacbd\uacc4\uac12, \ube44\uc815\uc0c1 \uc785\ub825, \uba85\uc138\ub418\uc9c0 \uc54a\uc740 \uc785\ub825, \uace0\uc7a5\uc0bd\uc785, \ud658\uacbd\uc870\uac74 \ubc0f \uac04\uc12d\uc870\uac74\uc744 \ud3ec\ud568\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n <div class=\"note\">\n <strong>Chapter 3\uc758 \uacb0\ub860<\/strong><br>\n \uc815\ub7c9\uc801 \uace0\uc7a5\ud655\ub960\ubfd0 \uc544\ub2c8\ub77c \uc0ac\uc591, \uc544\ud0a4\ud14d\ucc98, \uc9c4\ub2e8, \uc2dc\ud5d8, \uc6b4\uc804, \uc815\ube44 \ubc0f \ubcc0\uacbd\uae4c\uc9c0 \ud3ec\ud568\ud558\uc5ec \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc758 SIL \uc801\ud569\uc131\uc744 \uc785\uc99d\ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"ch4\">\n <h2>6. Chapter 4: \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \uc5b4\ub5bb\uac8c \uac1c\ubc1c\u00b7\uac80\uc99d\ud560 \uac83\uc778\uac00<\/h2>\n\n <h3>6.1 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uace0\uc7a5\uc758 \ud2b9\uc131<\/h3>\n <p>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uace0\uc7a5\uc740 \uc77c\ubc18 \ubd80\ud488\ucc98\ub7fc \ub9c8\ubaa8\ub418\uc5b4 \ubc1c\uc0dd\ud558\uc9c0 \uc54a\ub294\ub2e4. \ub300\ubd80\ubd84 \uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \ucf54\ub529 \ub610\ub294 \ubcc0\uacbd \uacfc\uc815\uc5d0 \uc874\uc7ac\ud558\ub294 \uccb4\uacc4\uc801 \uc624\ub958\uc774\ub2e4. \ub530\ub77c\uc11c \uba85\ud655\ud55c \uc694\uad6c\uc0ac\ud56d, \uad6c\uc870\ud654 \uc124\uacc4, \uc81c\ud55c\ub41c \uc5b8\uc5b4, \ubc29\uc5b4\uc801 \ucf54\ub529, \ub2e8\uacc4\uc801 \uac80\uc99d, \ud615\uc0c1\uad00\ub9ac \ubc0f Validation\uc744 \uc801\uc6a9\ud55c\ub2e4.<\/p>\n\n <h3>6.2 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc548\uc804 \uc0dd\uba85\uc8fc\uae30<\/h3>\n <div class=\"flow\">\n <div class=\"step\">\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\uc544\ud0a4\ud14d\ucc98<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\uc0c1\uc138\uc124\uacc4<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\ucf54\ub529<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\ubaa8\ub4c8\uc2dc\ud5d8<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\ud1b5\ud569\uc2dc\ud5d8<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">\uc804\uccb4 \uc2dc\uc2a4\ud15c\uc2dc\ud5d8<\/div><div class=\"arrow\">\u2192<\/div>\n <div class=\"step\">Validation<\/div>\n <\/div>\n <p>V-Model\uc740 \uc67c\ucabd\uc758 \uc694\uad6c\uc0ac\ud56d\u00b7\uc124\uacc4\ub2e8\uacc4\uc640 \uc624\ub978\ucabd\uc758 \uc2dc\ud5d8\ub2e8\uacc4\ub97c \ub300\uc751\uc2dc\ud0a8\ub2e4.<\/p>\n\n <h3>6.3 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d<\/h3>\n <p>\ucc98\ub9ac\uc6a9\ub7c9, \uc751\ub2f5\uc2dc\uac04, \uc785\ub825\uac12 \ud5c8\uc6a9\ubc94\uc704, \uc815\uc0c1\u00b7\uae30\ub3d9\u00b7\uc815\uc9c0\u00b7\uace0\uc7a5 \uc6b4\uc804\ubaa8\ub4dc, \uc548\uc804\uc0c1\ud0dc \uc804\ud658, Overflow\u00b7Underflow, \ub370\uc774\ud130 \uc190\uc0c1, \uc790\uae30\uc9c4\ub2e8, \uc6b4\uc804\uc790 \uc778\ud130\ud398\uc774\uc2a4 \ubc0f \ud558\ub4dc\uc6e8\uc5b4 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uba85\ud655\ud788 \uc815\uc758\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n <h3>6.4 \uc124\uacc4\uc640 \ucf54\ub529<\/h3>\n <ul>\n <li>\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654<\/li>\n <li>\uc548\uc804\uae30\ub2a5\uacfc \ube44\uc548\uc804\uae30\ub2a5\uc758 \ube44\uac04\uc12d\uc131<\/li>\n <li>\uc81c\ud55c\ub41c \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4<\/li>\n <li>\ubc29\uc5b4\uc801 \ud504\ub85c\uadf8\ub798\ubc0d<\/li>\n <li>\ubc94\uc704 \ubc0f \ud0c0\ub2f9\uc131 \uac80\uc0ac<\/li>\n <li>Pointer, Recursion, \ub3d9\uc801 \uba54\ubaa8\ub9ac\uc758 \uc81c\ud55c<\/li>\n <li>\uac80\uc99d\ub41c Library\uc640 Function Block \uc0ac\uc6a9<\/li>\n <li>Compiler\uc640 \uac1c\ubc1c\ub3c4\uad6c\uc758 \uc801\ud569\uc131 \uad00\ub9ac<\/li>\n <\/ul>\n\n <h3>6.5 \uc2dc\ud5d8<\/h3>\n <div class=\"formula\">\ubaa8\ub4c8\uc2dc\ud5d8 \u2192 \ubaa8\ub4c8 \ud1b5\ud569\uc2dc\ud5d8 \u2192 HW\/SW \ud1b5\ud569\uc2dc\ud5d8 \u2192 \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc2dc\ud5d8 \u2192 Validation<\/div>\n <p>\uc815\uc0c1\uae30\ub2a5\ubfd0 \uc544\ub2c8\ub77c \uacbd\uacc4\uac12, \ubc94\uc704 \ubc16 \uc785\ub825, Timeout, \uc0c1\ucda9 \uba85\ub839, \ud1b5\uc2e0\uc911\ub2e8, \ube44\uc815\uc0c1 \uc0c1\ud0dc\uc804\uc774 \ubc0f \uc758\ub3c4\ud558\uc9c0 \uc54a\uc740 \uae30\ub2a5\uc744 \uc2dc\ud5d8\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n <h3>6.6 \ud615\uc0c1\uad00\ub9ac<\/h3>\n <p>\ud615\uc0c1\uad00\ub9ac\ub294 \uc694\uad6c\uc0ac\ud56d, \uc124\uacc4\ubb38\uc11c, PLC \ud504\ub85c\uadf8\ub7a8, Function Block, Parameter, Compiler, Engineering Tool, Firmware, \uc2dc\ud5d8\uc808\ucc28 \ubc0f \uc2dc\ud5d8\uacb0\uacfc\ub97c \ud558\ub098\uc758 \uc2b9\uc778 \ud615\uc0c1\uc73c\ub85c \uad00\ub9ac\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \ubaa9\uc801\uc740 <strong>\uc124\uacc4\ud55c \uc2dc\uc2a4\ud15c, \uc2dc\ud5d8\ud55c \uc2dc\uc2a4\ud15c \ubc0f \uc2e4\uc81c \uc124\uce58\ub41c \uc2dc\uc2a4\ud15c\uc758 \ub3d9\uc77c\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \uac83<\/strong>\uc774\ub2e4.<\/p>\n\n <h3>6.7 \ubcc0\uacbd\uad00\ub9ac<\/h3>\n <div class=\"formula\">\ubcc0\uacbd \uc694\uccad \u2192 \uc601\ud5a5\ubd84\uc11d \u2192 \uc2b9\uc778 \u2192 \uad6c\ud604 \u2192 \uc7ac\uac80\uc99d \u2192 \uc0c8 \uae30\uc900\uc120<\/div>\n <p>SIL\uc774 \ub192\uc744\uc218\ub85d \uc7ac\uac80\uc99d \ubc94\uc704\uc640 \ub3c5\ub9bd\uc131\uc774 \uac15\ud654\ub41c\ub2e4.<\/p>\n\n <div class=\"note\">\n <strong>Chapter 4\uc758 \uacb0\ub860<\/strong><br>\n \uc548\uc804\uc18c\ud504\ud2b8\uc6e8\uc5b4\uc5d0 \uc624\ub958\uac00 \uc5c6\ub2e4\uace0 \uc120\uc5b8\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, \uc624\ub958\ub97c \uc608\ubc29\u00b7\ubc1c\uacac\u00b7\ud1b5\uc81c\ud558\uae30 \uc704\ud55c \uc0dd\uba85\uc8fc\uae30\ub97c \uc801\uc6a9\ud558\uace0 \uadf8 \uc218\ud589 \uc99d\uac70\ub85c \ubaa9\ud45c SIL\uc744 \uc785\uc99d\ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"integration\">\n <h2>7. \ub2e4\uc12f Chapter\uc758 \ud1b5\ud569 \uad00\uacc4<\/h2>\n <ol>\n <li><strong>\uc704\ud5d8 \uc778\uc2dd \u2014 Chapter 1:<\/strong> \uc0ac\uace0 \uc2dc\ub098\ub9ac\uc624\ub97c \uc2dd\ubcc4\ud558\uace0 \ub79c\ub364 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uad6c\ubd84\ud55c\ub2e4.<\/li>\n <li><strong>\ubaa9\ud45c \uacb0\uc815 \u2014 Chapter 2:<\/strong> \ud544\uc694\ud55c \uc704\ud5d8\uc800\uac10\ub7c9\uc744 \uacc4\uc0b0\ud558\uace0 \uac01 \uc548\uc804\uae30\ub2a5\uc5d0 \ubaa9\ud45c SIL\uc744 \ubd80\uc5ec\ud55c\ub2e4.<\/li>\n <li><strong>\uc815\ub7c9\ud3c9\uac00 \u2014 Chapter 5:<\/strong> \uc2e0\ub8b0\ub3c4 \ubaa8\ub378\uc744 \ub9cc\ub4e4\uace0 PFD \ub610\ub294 PFH\uac00 \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4.<\/li>\n <li><strong>\ud558\ub4dc\uc6e8\uc5b4\u00b7\uc2dc\uc2a4\ud15c \uad6c\ud604 \u2014 Chapter 3:<\/strong> SRS, \ub3c5\ub9bd\uc131, SFF, HFT, \uc9c4\ub2e8, \uc2dc\ud5d8 \ubc0f Validation\uc73c\ub85c \ud558\ub4dc\uc6e8\uc5b4 \uc801\ud569\uc131\uc744 \uc785\uc99d\ud55c\ub2e4.<\/li>\n <li><strong>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uad6c\ud604 \u2014 Chapter 4:<\/strong> V-Model, \uad6c\uc870\ud654 \uc124\uacc4, \uc81c\ud55c\ub41c \uc5b8\uc5b4, \uc2dc\ud5d8 \ubc0f \ud615\uc0c1\uad00\ub9ac\ub85c \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ud1b5\uc81c\ud55c\ub2e4.<\/li>\n <\/ol>\n\n <div class=\"summary\">\n <div class=\"item\"><strong>Chapter 1<\/strong><br>\uc65c \uc548\uc804\ubb34\uacb0\uc131\uc774 \ud544\uc694\ud55c\uac00<\/div>\n <div class=\"item\"><strong>Chapter 2<\/strong><br>\uc5b4\ub290 \uc218\uc900\uc758 SIL\uc774 \ud544\uc694\ud55c\uac00<\/div>\n <div class=\"item\"><strong>Chapter 5<\/strong><br>\uace0\uc7a5\ud655\ub960\uc774 \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\ub294\uac00<\/div>\n <div class=\"item\"><strong>Chapter 3<\/strong><br>\ud558\ub4dc\uc6e8\uc5b4\uc640 \uc2dc\uc2a4\ud15c\uc774 \uc801\uc808\ud558\uac8c \uc124\uacc4\ub418\uc5c8\ub294\uac00<\/div>\n <div class=\"item\"><strong>Chapter 4<\/strong><br>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uccb4\uacc4\uc801 \uace0\uc7a5\uc774 \ud1b5\uc81c\ub418\uc5c8\ub294\uac00<\/div>\n <\/div>\n\n <div class=\"note\">\n <strong>\ucd5c\uc885 \uc815\ub9ac<\/strong><br>\n \uc704\ud5d8\uc744 \uc2dd\ubcc4\ud558\uace0 \ubaa9\ud45c SIL\uc744 \uacb0\uc815\ud55c \ub4a4, \uc2e0\ub8b0\ub3c4 \ubaa8\ub378\ub85c \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc744 \uacc4\uc0b0\ud55c\ub2e4.\n \uc774\ud6c4 \ud558\ub4dc\uc6e8\uc5b4 \uc544\ud0a4\ud14d\ucc98\uc640 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc0dd\uba85\uc8fc\uae30\ub97c \ud1b5\ud574 \uc815\ub7c9\uc801\u00b7\uc815\uc131\uc801 \uc694\uad6c\ub97c \ubaa8\ub450 \ucda9\uc871\ud558\uace0,\n \uc2dc\ud5d8\u00b7\uc6b4\uc804\u00b7\ubcc0\uacbd\uc758 \uac1d\uad00\uc801 \uc99d\uac70\ub85c \uc801\ud569\uc131\uc744 \uc785\uc99d\ud55c\ub2e4.\n <\/div>\n <\/section>\n\n <section id=\"exam\">\n <h2>8. \uae30\uc220\uc0ac \ub2f5\uc548\uc6a9 \ud575\uc2ec \uc694\uc57d<\/h2>\n <div class=\"table-wrap\">\n <table>\n <thead><tr><th>\uad6c\ubd84<\/th><th>\ud575\uc2ec \ud45c\ud604<\/th><\/tr><\/thead>\n <tbody>\n <tr>\n <td>Chapter 1<\/td>\n <td>\uae30\ub2a5\uc548\uc804\uc740 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc704\ud5d8\uc744 \uc124\uc815\ud558\uace0 \uc0dd\uba85\uc8fc\uae30 \uc804\ubc18\uc5d0\uc11c \ub79c\ub364 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uad00\ub9ac\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4.<\/td>\n <\/tr>\n <tr>\n <td>Chapter 2<\/td>\n <td>\uc704\ud5d8\ubd84\uc11d\uacfc \ubcf4\ud638\uacc4\uce35 \ud3c9\uac00\ub97c \ud1b5\ud574 \uac01 \uc548\uc804\uae30\ub2a5\uc758 \ubaa9\ud45c SIL\uc744 \uacb0\uc815\ud55c\ub2e4.<\/td>\n <\/tr>\n <tr>\n <td>Chapter 5<\/td>\n <td>\uace0\uc7a5\ub960, \uc9c4\ub2e8, \uc2dc\ud5d8\uc8fc\uae30, \uc218\ub9ac\uc2dc\uac04, \uc911\ubcf5 \ubc0f CCF\ub97c \ubc18\uc601\ud558\uc5ec PFD \ub610\ub294 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4.<\/td>\n <\/tr>\n <tr>\n <td>Chapter 3<\/td>\n <td>SRS, \ub3c5\ub9bd\uc131, SFF, HFT, \ud1b5\ud569\uc2dc\ud5d8 \ubc0f Validation\uc73c\ub85c \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc2dc\uc2a4\ud15c \uc801\ud569\uc131\uc744 \uc785\uc99d\ud55c\ub2e4.<\/td>\n <\/tr>\n <tr>\n <td>Chapter 4<\/td>\n <td>V-Model, \uc81c\ud55c\ub41c \uc5b8\uc5b4, \ubc29\uc5b4\uc801 \ucf54\ub529, \ub2e8\uacc4\ubcc4 \uc2dc\ud5d8 \ubc0f \ud615\uc0c1\uad00\ub9ac\ub85c \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ud1b5\uc81c\ud55c\ub2e4.<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <p class=\"footer-note\">\n \ubcf8 \ubb38\uc11c\ub294 \ud559\uc2b5\uc6a9 \uc694\uc57d\uc774\uba70, \uc138\ubd80 \uc801\uc6a9 \uc2dc \ud574\ub2f9 IEC 61508 \uc6d0\ubb38\uacfc \ud504\ub85c\uc81d\ud2b8 \uc808\ucc28\ub97c \ud568\uaed8 \ud655\uc778\ud574\uc57c \ud55c\ub2e4.\n <\/p>\n <\/section>\n <\/main>\n <\/div>\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-5.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"TheSafetyCriticlaSystem\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-dbe59b4e-f329-4cdc-a09b-9371635f57ef\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/TheSafetyCriticlaSystem-5.pdf\">TheSafetyCriticlaSystem<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/TheSafetyCriticlaSystem-5.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-dbe59b4e-f329-4cdc-a09b-9371635f57ef\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<pre class=\"wp-block-code\"><code>\\documentclass[11pt,a4paper]{article}\n\n\\usepackage[utf8]{inputenc}\n\\usepackage[T1]{fontenc}\n\\usepackage{kotex}\n\\usepackage{geometry}\n\\usepackage{setspace}\n\\usepackage{booktabs}\n\\usepackage{tabularx}\n\\usepackage{array}\n\\usepackage{xcolor}\n\\usepackage{amsmath,amssymb}\n\\usepackage{enumitem}\n\\usepackage{hyperref}\n\\usepackage{tikz}\n\\usetikzlibrary{arrows.meta,positioning}\n\n\\geometry{left=18mm,right=18mm,top=18mm,bottom=20mm}\n\\setstretch{1.17}\n\\setlength{\\parindent}{0pt}\n\\setlength{\\parskip}{0.5em}\n\\setlist[itemize]{leftmargin=1.7em,itemsep=0.2em,topsep=0.3em}\n\\setlist[enumerate]{leftmargin=1.8em,itemsep=0.2em,topsep=0.3em}\n\n\\definecolor{navy}{HTML}{1F3A5F}\n\\definecolor{bluegray}{HTML}{EAF0F6}\n\\definecolor{softgreen}{HTML}{EAF5EE}\n\\definecolor{softyellow}{HTML}{FFF7DD}\n\n\\hypersetup{colorlinks=true,linkcolor=navy,urlcolor=navy,pdftitle={IEC 61508 \uae30\ub2a5\uc548\uc804 \ud750\ub984 \uc815\ub9ac}}\n\n\\newcommand{\\keyterm}[1]{\\textbf{\\textcolor{navy}{#1}}}\n\\newcommand{\\boxnote}[1]{%\n\\begin{center}\n\\fcolorbox{navy}{bluegray}{\\parbox{0.92\\textwidth}{#1}}\n\\end{center}}\n\n\\title{\\vspace{-1.5em}\\textbf{\\Huge IEC 61508 \uae30\ub2a5\uc548\uc804 \ud750\ub984 \uc815\ub9ac}\\\\[0.5em]\n\\Large Chapter 1 $\\rightarrow$ Chapter 2 $\\rightarrow$ Chapter 5 $\\rightarrow$ Chapter 3 $\\rightarrow$ Chapter 4}\n\\author{}\n\\date{}\n\n\\begin{document}\n\\maketitle\n\\vspace{-1.5em}\n\n\\boxnote{\\textbf{\ud559\uc2b5 \ubaa9\uc801}\\\\\n\ubcf8 \ubb38\uc11c\ub294 \\textit{The Safety Critical Systems Handbook}\uc758 Chapter 1, 2, 5, 3, 4\ub97c \uae30\ub2a5\uc548\uc804\uc758 \uc2e4\uc81c \uc0ac\uace0 \ud750\ub984\uc5d0 \ub9de\ucd94\uc5b4 \uc7ac\ubc30\uc5f4\ud55c \uac83\uc774\ub2e4. \uc804\uccb4 \ud750\ub984\uc740 \\textbf{\uc704\ud5d8 \uc778\uc2dd $\\rightarrow$ \ubaa9\ud45c SIL \uacb0\uc815 $\\rightarrow$ \uc815\ub7c9\uc801 \uc2e0\ub8b0\ub3c4 \uacc4\uc0b0 $\\rightarrow$ \ud558\ub4dc\uc6e8\uc5b4\u00b7\uc2dc\uc2a4\ud15c \uad6c\ud604 $\\rightarrow$ \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\u00b7\uac80\uc99d}\uc774\ub2e4.}\n\n\\tableofcontents\n\\newpage\n\n\\section{\uc804\uccb4 \ud750\ub984}\n\n\\subsection{\ud559\uc2b5 \uc21c\uc11c\uc640 \ud575\uc2ec \uc9c8\ubb38}\n\\begin{center}\n\\begin{tabularx}{\\textwidth}{>{\\centering\\arraybackslash}p{1.2cm} p{2.5cm} X}\n\\toprule\n\\textbf{\uc21c\uc11c} & \\textbf{Chapter} & \\textbf{\ud575\uc2ec \uc9c8\ubb38} \\\\\n\\midrule\n1 & Chapter 1 & \uc65c \uc548\uc804\ubb34\uacb0\uc131\uacfc SIL\uc774 \ud544\uc694\ud55c\uac00? \\\\\n2 & Chapter 2 & \uc5b4\ub5a4 \uc548\uc804\uae30\ub2a5\uc5d0 \uc5b4\ub290 SIL\uc744 \ubd80\uc5ec\ud560 \uac83\uc778\uac00? \\\\\n3 & Chapter 5 & \uc124\uacc4\ud55c \uc2dc\uc2a4\ud15c\uc774 \uc815\ub7c9\uc801 \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\ub294\uac00? \\\\\n4 & Chapter 3 & \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc744 \uc5b4\ub5bb\uac8c \uc124\uacc4\u00b7\uac80\uc99d\ud560 \uac83\uc778\uac00? \\\\\n5 & Chapter 4 & \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uc5b4\ub5bb\uac8c \ubc29\uc9c0\ud560 \uac83\uc778\uac00? \\\\\n\\bottomrule\n\\end{tabularx}\n\\end{center}\n\n\\subsection{\uae30\ub2a5\uc548\uc804 \uc804\uccb4 \uad00\uacc4\ub3c4}\n\\begin{center}\n\\begin{tikzpicture}[\nnode distance=7mm,\nbox\/.style={rectangle,rounded corners=3pt,draw=navy,thick,minimum width=3.1cm,minimum height=1.2cm,align=center,fill=bluegray},\narrow\/.style={-{Latex[length=2.5mm]},thick,draw=navy}]\n\\node[box] (c1) {\\textbf{Chapter 1}\\\\\uc704\ud5d8\uacfc \uc548\uc804\ubb34\uacb0\uc131};\n\\node[box,right=of c1] (c2) {\\textbf{Chapter 2}\\\\\ubaa9\ud45c SIL \uacb0\uc815};\n\\node[box,right=of c2] (c5) {\\textbf{Chapter 5}\\\\\uc2e0\ub8b0\ub3c4 \ubaa8\ub378\ub9c1};\n\\node[box,below=of c5] (c3) {\\textbf{Chapter 3}\\\\\ud558\ub4dc\uc6e8\uc5b4\u00b7\uc2dc\uc2a4\ud15c};\n\\node[box,left=of c3] (c4) {\\textbf{Chapter 4}\\\\\uc18c\ud504\ud2b8\uc6e8\uc5b4};\n\\draw[arrow] (c1)--(c2);\n\\draw[arrow] (c2)--(c5);\n\\draw[arrow] (c5)--(c3);\n\\draw[arrow] (c3)--(c4);\n\\end{tikzpicture}\n\\end{center}\n\n\\boxnote{\\textbf{\ud575\uc2ec}\\\\\nChapter 1\uacfc 2\uac00 ``\uc5bc\ub9c8\ub098 \uc548\uc804\ud574\uc57c \ud558\ub294\uac00''\ub97c \uc815\ud55c\ub2e4. Chapter 5\ub294 ``\uc218\uce58\uc801\uc73c\ub85c \uac00\ub2a5\ud55c\uac00''\ub97c \uac80\ud1a0\ud55c\ub2e4. Chapter 3\uacfc 4\ub294 \uac01\uac01 \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc18c\ud504\ud2b8\uc6e8\uc5b4\uac00 \uadf8 \ubaa9\ud45c\ub97c \uc2e4\uc81c\ub85c \ub9cc\uc871\ud558\ub3c4\ub85d \uad6c\ud604\ud558\uace0 \uc785\uc99d\ud55c\ub2e4.}\n\n\\section{Chapter 1: \uc548\uc804\ubb34\uacb0\uc131\uc774 \uc65c \ud544\uc694\ud55c\uac00}\n\n\\subsection{Zero Risk\ub294 \uc874\uc7ac\ud558\uc9c0 \uc54a\ub294\ub2e4}\n\uae30\ub2a5\uc548\uc804\uc758 \ucd9c\ubc1c\uc810\uc740 \\keyterm{\uc704\ud5d8\uc744 \uc644\uc804\ud788 \uc81c\uac70\ud560 \uc218 \uc5c6\ub2e4\ub294 \uc0ac\uc2e4}\uc774\ub2e4.\n\\begin{itemize}\n\\item \ud558\ub4dc\uc6e8\uc5b4\uc5d0\ub294 \ubb3c\ub9ac\uc801 \uace0\uc7a5\uc774 \ubc1c\uc0dd\ud55c\ub2e4.\n\\item \uc0ac\ub78c\uc740 \uc2e4\uc218\ud55c\ub2e4.\n\\item \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub294 \ubaa8\ub4e0 \uc6b4\uc804\uc0c1\ud669\uc744 \uc644\ubcbd\ud788 \uc608\uce21\ud560 \uc218 \uc5c6\ub2e4.\n\\end{itemize}\n\ub530\ub77c\uc11c \ubaa9\ud45c\ub294 \uc704\ud5d8\uc744 0\uc73c\ub85c \ub9cc\ub4dc\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \\keyterm{\ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc218\uc900\uae4c\uc9c0 \uc800\uac10\ud558\ub294 \uac83}\uc774\ub2e4.\n\\[\n\\text{\ud604\uc7ac \uc704\ud5d8}\\rightarrow\\text{\uc704\ud5d8 \uc800\uac10}\\rightarrow\\text{\ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc794\uc5ec\uc704\ud5d8}\n\\]\n\n\\subsection{\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5}\n\\begin{center}\n\\begin{tabularx}{\\textwidth}{p{3.2cm} X X}\n\\toprule\n & \\textbf{\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5} & \\textbf{\uccb4\uacc4\uc801 \uace0\uc7a5} \\\\\n\\midrule\n\ubc1c\uc0dd \ud2b9\uc131 & \ubd80\ud488\uc758 \uc5f4\ud654\u00b7\ud30c\uc190\u00b7\ubb3c\ub9ac\uc801 \uacb0\ud568\uc73c\ub85c \ubc1c\uc0dd & \uc694\uad6c\uc0ac\ud56d\u00b7\uc124\uacc4\u00b7\uc18c\ud504\ud2b8\uc6e8\uc5b4\u00b7\uc808\ucc28\uc758 \uc624\ub958\ub85c \ubc1c\uc0dd \\\\\n\uc608\uc2dc & \uc13c\uc11c \ub2e8\uc120, \ub9b4\ub808\uc774 \uc811\uc810\ubd88\ub7c9, \ubc38\ube0c \uace0\ucc29 & \uc798\ubabb\ub41c Trip \uc870\uac74, \ub17c\ub9ac \ub204\ub77d, \ubcc0\uacbd \uc601\ud5a5\ubd84\uc11d \ub204\ub77d \\\\\n\ud3c9\uac00 \ubc29\ubc95 & \uace0\uc7a5\ub960\uacfc \ud655\ub960\uc744 \uc774\uc6a9\ud55c \uc815\ub7c9\uc801 \ud3c9\uac00 & \uc124\uacc4\u00b7\uac80\ud1a0\u00b7\uc2dc\ud5d8\u00b7\uad00\ub9ac \uc808\ucc28\uc5d0 \uc758\ud55c \uc815\uc131\uc801 \ud1b5\uc81c \\\\\n\\bottomrule\n\\end{tabularx}\n\\end{center}\n\\[\n\\begin{aligned}\n\\text{\ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5}&\\rightarrow\\text{\uc815\ub7c9\uc801 \ud3c9\uac00}\\\\\n\\text{\uccb4\uacc4\uc801 \uace0\uc7a5}&\\rightarrow\\text{\uc815\uc131\uc801 \uc124\uacc4\u00b7\uad00\ub9ac \uaddc\uc728}\n\\end{aligned}\n\\]\n\n\\subsection{SIL\uc758 \ub450 \uac00\uc9c0 \uc758\ubbf8}\n\\keyterm{SIL(Safety Integrity Level)}\uc740 \ub2e8\uc21c\ud55c \ud655\ub960 \ub4f1\uae09\uc774 \uc544\ub2c8\ub2e4.\n\\begin{enumerate}\n\\item \\textbf{\uc815\ub7c9\uc801 \uc758\ubbf8}: \uc704\ud5d8\uace0\uc7a5\ud655\ub960 \ub610\ub294 \uc704\ud5d8\uace0\uc7a5\ube48\ub3c4\uc758 \ubaa9\ud45c\n\\item \\textbf{\uc815\uc131\uc801 \uc758\ubbf8}: \uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \uac80\ud1a0, \uc2dc\ud5d8 \ubc0f \uad00\ub9ac\uc758 \uc5c4\uaca9\ub3c4\n\\end{enumerate}\n\uc989, SIL 3\uc744 \uc8fc\uc7a5\ud558\ub824\uba74 \uacc4\uc0b0\uac12\ubfd0 \uc544\ub2c8\ub77c SIL 3 \uc218\uc900\uc758 \uc0dd\uba85\uc8fc\uae30, \uc544\ud0a4\ud14d\ucc98, \uac80\uc99d \ubc0f \uad00\ub9ac \uc694\uad6c\ub3c4 \ucda9\uc871\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{\uc548\uc804 \uc0dd\uba85\uc8fc\uae30}\n\\[\n\\text{\uac1c\ub150\u00b7\ubc94\uc704}\\rightarrow\\text{\uc704\ud5d8\uc6d0 \uc2dd\ubcc4}\\rightarrow\\text{\uc548\uc804\uae30\ub2a5\u00b7SIL \uacb0\uc815}\\rightarrow\\text{SRS}\\rightarrow\\text{\uc124\uacc4\u00b7\uc81c\uc791}\n\\]\n\\[\n\\rightarrow\\text{\uc124\uce58\u00b7\uc2dc\uc6b4\uc804}\\rightarrow\\text{Validation}\\rightarrow\\text{\uc6b4\uc804\u00b7\uc815\ube44}\\rightarrow\\text{\ubcc0\uacbd}\\rightarrow\\text{\ud3d0\uae30}\n\\]\n\\boxnote{\\textbf{Chapter 1\uc758 \uacb0\ub860}\\\\\n\uc704\ud5d8\uc744 \uc2dd\ubcc4\ud558\uace0 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \ubaa9\ud45c\ub97c \uc815\ud55c \ub4a4, \uc0dd\uba85\uc8fc\uae30 \uc804\uccb4\uc5d0\uc11c \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ud568\uaed8 \uad00\ub9ac\ud574\uc57c \ud55c\ub2e4.}\n\n\\section{Chapter 2: \ubaa9\ud45c SIL\uc744 \uc5b4\ub5bb\uac8c \uacb0\uc815\ud558\ub294\uac00}\n\n\\subsection{\uc704\ud5d8 \uc2dc\ub098\ub9ac\uc624 \uc815\uc758}\n\ubaa9\ud45c SIL \uacb0\uc815\uc740 \uad6c\uccb4\uc801\uc778 \uc0ac\uace0 \uc2dc\ub098\ub9ac\uc624\uc5d0\uc11c \uc2dc\uc791\ud55c\ub2e4.\n\\[\n\\text{\uc555\ub825 \uc0c1\uc2b9}\\rightarrow\\text{\uc6a9\uae30 \ud30c\uc5f4}\\rightarrow\\text{\uc720\ud574\ubb3c\uc9c8 \ub204\ucd9c}\\rightarrow\\text{\uc0ac\ub9dd \uac00\ub2a5\uc131}\n\\]\n\ud3c9\uac00 \uc694\uc18c\ub294 \uc0ac\uace0 \uacb0\uacfc\uc758 \uc2ec\uac01\ub3c4, \ubc1c\uc0dd \uac00\ub2a5\uc131, \ub178\ucd9c \uac00\ub2a5\uc131, \ud68c\ud53c \uac00\ub2a5\uc131, \uae30\uc874 \ubcf4\ud638\uacc4\uce35\uc758 \uc131\ub2a5, \uac1c\uc778\uc704\ud5d8\uacfc \uc0ac\ud68c\uc801 \uc704\ud5d8\uc774\ub2e4.\n\n\\subsection{\ud544\uc694\ud55c \uc704\ud5d8\uc800\uac10\ub7c9}\n\\[\nRRF_{\\text{required}}=\\frac{\\text{\ubcf4\ud638 \uc804 \uc704\ud5d8}}{\\text{\ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc704\ud5d8}}\n\\]\n\uc608\ub97c \ub4e4\uc5b4 \ubcf4\ud638 \uc804 \uc0ac\uace0\ube48\ub3c4\uac00 \uc5f0\uac04 $10^{-2}$\uc774\uace0 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \ubaa9\ud45c\uac00 \uc5f0\uac04 $10^{-5}$\ub77c\uba74 $RRF_{\\text{required}}=10^3$\uc774\ub2e4.\n\n\\subsection{\ubcf4\ud638\uacc4\uce35\uc758 \ubd84\ub2f4}\n\\[\n\\text{\uae30\ubcf8 \uacf5\uc815\uc81c\uc5b4}+\\text{\uacbd\ubcf4\u00b7\uc6b4\uc804\uc790 \uc870\uce58}+\\text{\uae30\uacc4\uc801 \ubcf4\ud638\uc7a5\uce58}+\\text{SIF}+\\text{\ube44\uc0c1\ub300\uc751}\n\\]\n\uac01 \ubcf4\ud638\uacc4\uce35\uc740 \ub3c5\ub9bd\uc801\uc774\uc5b4\uc57c \ud558\uba70, SIF\uac00 \ub2f4\ub2f9\ud574\uc57c \ud560 \uc794\uc5ec \uc704\ud5d8\uc800\uac10\ub7c9\uc744 \uae30\uc900\uc73c\ub85c \ubaa9\ud45c SIL\uc744 \uc815\ud55c\ub2e4.\n\n\\subsection{\ubaa9\ud45c SIL \uacb0\uc815 \ubc29\ubc95}\n\\begin{center}\n\\begin{tabularx}{\\textwidth}{p{3cm} X X}\n\\toprule\n\\textbf{\ubc29\ubc95} & \\textbf{\uac1c\ub150} & \\textbf{\ud2b9\uc9d5} \\\\\n\\midrule\n\uc815\ub7c9\uc801 \ubc29\ubc95 & \ucd08\uae30\uc0ac\uac74\ube48\ub3c4, \uc0ac\uace0\uc804\ud30c\ud655\ub960, \ubcf4\ud638\uacc4\uce35 \uc2e4\ud328\ud655\ub960\uc744 \uacc4\uc0b0 & \uba85\ud655\ud55c \uc218\uce58\ubaa9\ud45c\ub97c \uc81c\uc2dc\ud560 \uc218 \uc788\uc73c\ub098 \ub370\uc774\ud130\uac00 \ud544\uc694\ud568 \\\\\nLOPA & \uc0ac\uace0 \uc2dc\ub098\ub9ac\uc624\ubcc4 \ub3c5\ub9bd\ubcf4\ud638\uacc4\uce35\uc744 \ub2e8\uacc4\uc801\uc73c\ub85c \ud3c9\uac00 & \ud604\uc7a5 \uc801\uc6a9\uc131\uc774 \ub192\uace0 \ubcf4\ud638\uacc4\uce35\uc758 \ub3c5\ub9bd\uc131 \ud310\ub2e8\uc774 \uc911\uc694\ud568 \\\\\nRisk Graph & \uc2ec\uac01\ub3c4, \ub178\ucd9c\ube48\ub3c4, \ud68c\ud53c \uac00\ub2a5\uc131, \ubc1c\uc0dd \uac00\ub2a5\uc131\uc744 \ubc94\uc8fc\ud654 & \uac04\ud3b8\ud558\uc9c0\ub9cc \ud310\ub2e8\uc758 \uc8fc\uad00\uc131\uc774 \ucee4\uc9c8 \uc218 \uc788\uc74c \\\\\n\\bottomrule\n\\end{tabularx}\n\\end{center}\n\n\\subsection{SIL\uc740 \uc548\uc804\uae30\ub2a5\ubcc4\ub85c \uacb0\uc815\ud55c\ub2e4}\nSIL\uc740 \uc804\uccb4 PLC\ub098 SIS\uc5d0 \uc77c\uad04 \ubd80\uc5ec\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \uac01 \\keyterm{SIF}\ubcc4\ub85c \uacb0\uc815\ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uace0\uc555 \ucc28\ub2e8\uc740 SIL 2, \uace0\uc628 \ucc28\ub2e8\uc740 SIL 1, \ud654\uc5fc\uac10\uc2dc\ub294 SIL 3\uc77c \uc218 \uc788\ub2e4.\n\n\\subsection{ALARP\uc640 \uae30\ub2a5\uc548\uc804\uad00\ub9ac}\n\ubaa9\ud45c SIL\uc744 \ub9cc\uc871\ud558\ub354\ub77c\ub3c4 \ucd94\uac00 \uc704\ud5d8\uc800\uac10\uc774 \ud569\ub9ac\uc801\uc73c\ub85c \uc2e4\ud589 \uac00\ub2a5\ud558\ub2e4\uba74 \uac80\ud1a0\ud574\uc57c \ud55c\ub2e4. \uc5ed\ud560\uacfc \ucc45\uc784, \uc5ed\ub7c9, \ub3c5\ub9bd \uac80\ud1a0, \ubb38\uc11c\uccb4\uacc4, \ubcc0\uacbd\uad00\ub9ac \ubc0f \uae30\ub2a5\uc548\uc804\ud3c9\uac00\ub3c4 \ud544\uc694\ud558\ub2e4.\n\n\\boxnote{\\textbf{Chapter 2\uc758 \uacb0\ub860}\\\\\n\uc704\ud5d8\ubd84\uc11d\uc744 \ud1b5\ud574 \uac01 \uc548\uc804\uae30\ub2a5\uc774 \ub2f4\ub2f9\ud574\uc57c \ud560 \uc704\ud5d8\uc800\uac10\ub7c9\uc744 \uc815\ud558\uace0, \uc774\ub97c SIL \ub610\ub294 \uac1c\ubcc4 \uc815\ub7c9\ubaa9\ud45c\ub85c \ud45c\ud604\ud55c\ub2e4.}\n\n\\section{Chapter 5: \ubaa9\ud45c SIL\uc744 \uc218\uce58\ub85c \ub9cc\uc871\ud558\ub294\uac00}\n\n\\subsection{\uc2e0\ub8b0\ub3c4 \ubaa8\ub378\uc758 \uad6c\uc131}\n\uc548\uc804\uae30\ub2a5\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \ub2e4\uc74c\uc758 \uc138 \ubd80\ubd84\uc73c\ub85c \uad6c\uc131\ub41c\ub2e4.\n\\[\n\\text{\uc13c\uc11c}\\rightarrow\\text{\ub85c\uc9c1\uc194\ubc84}\\rightarrow\\text{\ucd5c\uc885\uc694\uc18c}\n\\]\n\uc815\ub7c9\ud3c9\uac00\uc5d0\ub294 \uc704\ud5d8\uace0\uc7a5\ub960, \uc9c4\ub2e8\ubc94\uc704, \uc790\ub3d9\uc9c4\ub2e8 \uc8fc\uae30, Proof Test \uc8fc\uae30, \uc218\ub9ac\uc2dc\uac04, \uc911\ubcf5 \uad6c\uc131, \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5 \ubc0f \uc6b4\uc804\uc790 \uac1c\uc785\uc774 \ud544\uc694\ud558\ub2e4.\n\n\\subsection{Reliability Block Diagram}\n\\textbf{\uc9c1\ub82c\uad6c\uc870}: \ubaa8\ub4e0 \uc694\uc18c\uac00 \uc815\uc0c1\uc774\uc5b4\uc57c \uc548\uc804\uae30\ub2a5\uc774 \uc131\uacf5\ud55c\ub2e4. \ud55c \uc694\uc18c\ub9cc \uc2e4\ud328\ud574\ub3c4 \uc804\uccb4 \uc548\uc804\uae30\ub2a5\uc774 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4.\n\n\\textbf{\ubcd1\ub82c\uad6c\uc870}: \uc5ec\ub7ec \uacbd\ub85c \uc911 \ud544\uc694\ud55c \uc218\ub9cc \uc815\uc0c1\uc774\uc5b4\ub3c4 \uc548\uc804\uae30\ub2a5\uc744 \uc720\uc9c0\ud55c\ub2e4. \uc911\ubcf5\uc740 \ub3c5\ub9bd\uace0\uc7a5\uc5d0\ub294 \ud6a8\uacfc\uac00 \uc788\uc9c0\ub9cc \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5\uc5d0\ub294 \ucde8\uc57d\ud558\ub2e4.\n\n\\subsection{\uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5}\n\\keyterm{CCF(Common Cause Failure)}\ub294 \uc911\ubcf5\ucc44\ub110\uc774 \uac19\uc740 \uc6d0\uc778\uc73c\ub85c \ub3d9\uc2dc\uc5d0 \uc2e4\ud328\ud558\ub294 \ud604\uc0c1\uc774\ub2e4. \uacf5\ud1b5 \uc804\uc6d0, \ub3d9\uc77c \ud658\uacbd, \ub3d9\uc77c \uc124\uacc4\uacb0\ud568, \uacf5\ud1b5 \ud1b5\uc2e0\ub9dd, \ub3d9\uc77c \uc815\ube44 \uc624\ub958, \ub3d9\uc77c \uc2dc\ud5d8\uc7a5\ube44 \ubc0f \ub3d9\uc77c \uc18c\ud504\ud2b8\uc6e8\uc5b4\uac00 \ub300\ud45c \uc6d0\uc778\uc774\ub2e4.\n\n\\subsection{Fault Tree Analysis}\n\\[\n\\text{\uc548\uc804\ucc28\ub2e8 \uc2e4\ud328}=\\text{\uc13c\uc11c \uc2e4\ud328}\\lor\\text{\ub85c\uc9c1\uc194\ubc84 \uc2e4\ud328}\\lor\\text{\ubc38\ube0c \uc2e4\ud328}\n\\]\nRBD\ub294 \uc131\uacf5\uacbd\ub85c\ub97c \ud45c\ud604\ud558\uace0, FTA\ub294 \uc2e4\ud328\uacbd\ub85c\uc640 \ubcf5\uc7a1\ud55c \uc6d0\uc778\uc870\ud569\uc744 \ud45c\ud604\ud558\ub294 \ub370 \uc720\ub9ac\ud558\ub2e4.\n\n\\subsection{\uc790\ub3d9\uc9c4\ub2e8\uacfc Proof Test}\n\\begin{itemize}\n\\item \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uace0\uc7a5: \uc9e7\uc740 \uc2dc\uac04 \ub0b4 \ubc1c\uacac\n\\item Proof Test\ub85c \uac80\ucd9c\ub418\ub294 \uace0\uc7a5: \uc2dc\ud5d8\uc8fc\uae30 \ub3d9\uc548 \uc7a0\ubcf5\n\\item \uc2e4\uc81c Demand\uc5d0\uc11c\ub9cc \uac80\ucd9c\ub418\ub294 \uace0\uc7a5: \ub354 \uae34 \uc2dc\uac04 \uc7a0\ubcf5 \uac00\ub2a5\n\\end{itemize}\n\uc9c4\ub2e8\ubc94\uc704\uac00 \ub192\uace0 \uc9c4\ub2e8\uc8fc\uae30\uac00 \uc9e7\uc744\uc218\ub85d \ube44\uac00\uc6a9\ub3c4\uac00 \uac10\uc18c\ud55c\ub2e4. \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ud558\uc9c0 \ubabb\ud558\ub294 \uc704\ud5d8\uace0\uc7a5\uc740 Proof Test \uc8fc\uae30\uc758 \uc601\ud5a5\uc744 \ud06c\uac8c \ubc1b\ub294\ub2e4.\n\n\\subsection{\uc778\uc801\uc694\uc778}\n\uc798\ubabb\ub41c Bypass, Proof Test \ud6c4 \ubcf5\uad6c \ub204\ub77d, \uc124\uc815\uac12 \uc624\uc785\ub825, \ube44\uc0c1\uc870\uc791 \uc2e4\ud328 \ubc0f \uc624\uc815\ube44\ub3c4 \uc2e4\ud328\uacbd\ub85c\uac00 \ub420 \uc218 \uc788\ub2e4.\n\n\\boxnote{\\textbf{Chapter 5\uc758 \uacb0\ub860}\\\\\n\uace0\uc7a5\ub960\ubfd0 \uc544\ub2c8\ub77c \uc911\ubcf5\uad6c\uc870, \uc7a0\ubcf5\uc2dc\uac04, \uc9c4\ub2e8, \uc2dc\ud5d8, \uc218\ub9ac, \uacf5\ud1b5\uc6d0\uc778 \ubc0f \uc778\uc801\uc694\uc778\uc744 \ud558\ub098\uc758 \ubaa8\ub378\uc5d0 \ud3ec\ud568\ud558\uc5ec PFD \ub610\ub294 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4.}\n\n\\section{Chapter 3: \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc2dc\uc2a4\ud15c\uc744 \uc5b4\ub5bb\uac8c \uc124\uacc4\ud560 \uac83\uc778\uac00}\n\n\\subsection{\uc548\uc804\uc694\uad6c\uc0ac\ud56d\uba85\uc138\uc11c}\nSRS\uc5d0\ub294 \uc548\uc804\uae30\ub2a5, \uc548\uc804\uc0c1\ud0dc, Trip \uc870\uac74, \uc751\ub2f5\uc2dc\uac04, Reset \uc870\uac74, \uc6b4\uc804\ubaa8\ub4dc, \uc804\uc6d0 \uc0c1\uc2e4 \uc2dc \ub3d9\uc791, \uc678\ubd80 \uc778\ud130\ud398\uc774\uc2a4, \ud658\uacbd\uc870\uac74, Proof Test \uc694\uad6c \ubc0f \uac01 \uae30\ub2a5\uc758 SIL\uc744 \uc2dc\ud5d8 \uac00\ub2a5\ud55c \ud615\ud0dc\ub85c \uc815\uc758\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{\ub3c5\ub9bd\uc131\uacfc \ubd84\ub9ac}\nEUC, \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c \ubc0f \uc548\uc804\uc2dc\uc2a4\ud15c \uc0ac\uc774\uc5d0\ub294 \uc804\uc6d0, \ubc30\uc120, \ud1b5\uc2e0 \ubc0f \ubb3c\ub9ac\uc801 \ubd84\ub9ac\uac00 \ud544\uc694\ud558\ub2e4. \ub3c5\ub9bd\uc131\uc744 \uc785\uc99d\ud558\uc9c0 \ubabb\ud558\uba74 \uc77c\ubc18 \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uae4c\uc9c0 \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc73c\ub85c \ud3c9\uac00\ud574\uc57c \ud560 \uc218 \uc788\ub2e4.\n\n\\subsection{\uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\u00b7\uc9c4\ub2e8}\n\uac80\uc99d\ub41c \ubd80\ud488, \uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654, \uace0\uc7a5 \uac80\ucd9c \uc2dc \uc548\uc804\uc0c1\ud0dc \uc804\ud658, Watchdog, \uba54\ubaa8\ub9ac\u00b7I\/O \uc9c4\ub2e8, EMC, \uc628\ub77c\uc778 \ubcc0\uacbd \ubc29\uc9c0 \ubc0f \uc6b4\uc804\uc790 \uc624\ub958 \ubc29\uc9c0\ub97c \uc801\uc6a9\ud55c\ub2e4.\n\n\\subsection{SFF\uc640 HFT}\n\\keyterm{SFF}\ub294 \uc804\uccb4 \uace0\uc7a5 \uc911 \uc548\uc804\uc0c1\ud0dc\ub97c \uc720\ubc1c\ud558\uac70\ub098 \uc790\ub3d9\uc9c4\ub2e8\uc73c\ub85c \uac80\ucd9c\ub418\ub294 \uc704\ud5d8\uace0\uc7a5\uc758 \ube44\uc728\uc774\ub2e4.\n\\[\nSFF=\\frac{\\text{\uc548\uc804\uace0\uc7a5}+\\text{\uac80\ucd9c\ub41c \uc704\ud5d8\uace0\uc7a5}}{\\text{\uc804\uccb4 \uace0\uc7a5}}\n\\]\n\\keyterm{HFT}\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc744 \ud5c8\uc6a9\ud558\uba74\uc11c \uc548\uc804\uae30\ub2a5\uc744 \uc720\uc9c0\ud558\ub294 \ub2a5\ub825\uc774\ub2e4.\n\\begin{center}\n\\begin{tabular}{cc}\n\\toprule\n\\textbf{HFT} & \\textbf{\uc758\ubbf8} \\\\\n\\midrule\n0 & \uace0\uc7a5 \ud5c8\uc6a9 \uc5c6\uc74c \\\\\n1 & \ud55c \uac1c\uc758 \uace0\uc7a5\uc744 \ud5c8\uc6a9 \\\\\n2 & \ub450 \uac1c\uc758 \uace0\uc7a5\uc744 \ud5c8\uc6a9 \\\\\n\\bottomrule\n\\end{tabular}\n\\end{center}\nType A \ub610\ub294 Type B, SFF \ubc0f HFT\uc758 \uc870\ud569\uc740 \uc8fc\uc7a5 \uac00\ub2a5\ud55c \ucd5c\ub300 SIL\uc744 \uc81c\ud55c\ud55c\ub2e4.\n\\[\n\\boxed{\\text{PFD\/PFH \uc815\ub7c9\ubaa9\ud45c \ucda9\uc871}}\\qquad\\text{\ubc0f}\\qquad\\boxed{\\text{SFF\/HFT \uc544\ud0a4\ud14d\ucc98 \uc81c\uc57d \ucda9\uc871}}\n\\]\n\n\\subsection{Verification\uacfc Validation}\n\\begin{center}\n\\begin{tabularx}{\\textwidth}{p{3cm} X X}\n\\toprule\n & \\textbf{Verification} & \\textbf{Validation} \\\\\n\\midrule\n\ud575\uc2ec \uc9c8\ubb38 & \uac01 \ub2e8\uacc4\uc758 \uc0b0\ucd9c\ubb3c\uc774 \uc55e \ub2e8\uacc4 \uc694\uad6c\ub97c \ub9cc\uc871\ud558\ub294\uac00? & \uc644\uc131\ub41c \uc2dc\uc2a4\ud15c\uc774 \ucd5c\ucd08 \uc548\uc804\uc694\uad6c\uc0ac\ud56d\uc744 \ub9cc\uc871\ud558\ub294\uac00? \\\\\n\uc8fc\uc694 \uc218\ub2e8 & \uac80\ud1a0, \uacc4\uc0b0, \ub2e8\uc704\uc2dc\ud5d8, \ud1b5\ud569\uc2dc\ud5d8 & \uc804\uccb4 \uae30\ub2a5\uc2dc\ud5d8, \uace0\uc7a5\uc0bd\uc785, \ud658\uacbd\uc2dc\ud5d8, \ucd5c\uc885 \uc778\uc218 \\\\\n\\bottomrule\n\\end{tabularx}\n\\end{center}\n\uc2dc\ud5d8\uc5d0\ub294 \uc815\uc0c1\uc870\uac74\ubfd0 \uc544\ub2c8\ub77c \uacbd\uacc4\uac12, \ube44\uc815\uc0c1 \uc785\ub825, \uba85\uc138\ub418\uc9c0 \uc54a\uc740 \uc785\ub825, \uace0\uc7a5\uc0bd\uc785, \ud658\uacbd\uc870\uac74 \ubc0f \uac04\uc12d\uc870\uac74\uc744 \ud3ec\ud568\ud574\uc57c \ud55c\ub2e4.\n\n\\boxnote{\\textbf{Chapter 3\uc758 \uacb0\ub860}\\\\\n\uc815\ub7c9\uc801 \uace0\uc7a5\ud655\ub960\ubfd0 \uc544\ub2c8\ub77c \uc0ac\uc591, \uc544\ud0a4\ud14d\ucc98, \uc9c4\ub2e8, \uc2dc\ud5d8, \uc6b4\uc804, \uc815\ube44 \ubc0f \ubcc0\uacbd\uae4c\uc9c0 \ud3ec\ud568\ud558\uc5ec \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc758 SIL \uc801\ud569\uc131\uc744 \uc785\uc99d\ud55c\ub2e4.}\n\n\\section{Chapter 4: \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \uc5b4\ub5bb\uac8c \uac1c\ubc1c\u00b7\uac80\uc99d\ud560 \uac83\uc778\uac00}\n\n\\subsection{\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uace0\uc7a5\uc758 \ud2b9\uc131}\n\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uace0\uc7a5\uc740 \uc77c\ubc18 \ubd80\ud488\ucc98\ub7fc \ub9c8\ubaa8\ub418\uc5b4 \ubc1c\uc0dd\ud558\uc9c0 \uc54a\ub294\ub2e4. \ub300\ubd80\ubd84 \uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \ucf54\ub529 \ub610\ub294 \ubcc0\uacbd \uacfc\uc815\uc5d0 \uc874\uc7ac\ud558\ub294 \uccb4\uacc4\uc801 \uc624\ub958\uc774\ub2e4. \ub530\ub77c\uc11c \uba85\ud655\ud55c \uc694\uad6c\uc0ac\ud56d, \uad6c\uc870\ud654 \uc124\uacc4, \uc81c\ud55c\ub41c \uc5b8\uc5b4, \ubc29\uc5b4\uc801 \ucf54\ub529, \ub2e8\uacc4\uc801 \uac80\uc99d, \ud615\uc0c1\uad00\ub9ac \ubc0f Validation\uc744 \uc801\uc6a9\ud55c\ub2e4.\n\n\\subsection{\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc548\uc804 \uc0dd\uba85\uc8fc\uae30}\n\\[\n\\text{\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d}\\rightarrow\\text{\uc544\ud0a4\ud14d\ucc98}\\rightarrow\\text{\uc0c1\uc138\uc124\uacc4}\\rightarrow\\text{\ucf54\ub529}\n\\]\n\\[\n\\rightarrow\\text{\ubaa8\ub4c8\uc2dc\ud5d8}\\rightarrow\\text{\ud1b5\ud569\uc2dc\ud5d8}\\rightarrow\\text{\uc804\uccb4 \uc2dc\uc2a4\ud15c\uc2dc\ud5d8}\\rightarrow\\text{Validation}\n\\]\nV-Model\uc740 \uc67c\ucabd\uc758 \uc694\uad6c\uc0ac\ud56d\u00b7\uc124\uacc4\ub2e8\uacc4\uc640 \uc624\ub978\ucabd\uc758 \uc2dc\ud5d8\ub2e8\uacc4\ub97c \ub300\uc751\uc2dc\ud0a8\ub2e4.\n\n\\subsection{\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc548\uc804\uc694\uad6c\uc0ac\ud56d}\n\ucc98\ub9ac\uc6a9\ub7c9, \uc751\ub2f5\uc2dc\uac04, \uc785\ub825\uac12 \ud5c8\uc6a9\ubc94\uc704, \uc815\uc0c1\u00b7\uae30\ub3d9\u00b7\uc815\uc9c0\u00b7\uace0\uc7a5 \uc6b4\uc804\ubaa8\ub4dc, \uc548\uc804\uc0c1\ud0dc \uc804\ud658, Overflow\u00b7Underflow, \ub370\uc774\ud130 \uc190\uc0c1, \uc790\uae30\uc9c4\ub2e8, \uc6b4\uc804\uc790 \uc778\ud130\ud398\uc774\uc2a4 \ubc0f \ud558\ub4dc\uc6e8\uc5b4 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uba85\ud655\ud788 \uc815\uc758\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{\uc124\uacc4\uc640 \ucf54\ub529}\n\\begin{itemize}\n\\item \uad6c\uc870\ud654\u00b7\ubaa8\ub4c8\ud654\n\\item \uc548\uc804\uae30\ub2a5\uacfc \ube44\uc548\uc804\uae30\ub2a5\uc758 \ube44\uac04\uc12d\uc131\n\\item \uc81c\ud55c\ub41c \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\n\\item \ubc29\uc5b4\uc801 \ud504\ub85c\uadf8\ub798\ubc0d\n\\item \ubc94\uc704 \ubc0f \ud0c0\ub2f9\uc131 \uac80\uc0ac\n\\item Pointer, Recursion, \ub3d9\uc801 \uba54\ubaa8\ub9ac\uc758 \uc81c\ud55c\n\\item \uac80\uc99d\ub41c Library\uc640 Function Block \uc0ac\uc6a9\n\\item Compiler\uc640 \uac1c\ubc1c\ub3c4\uad6c\uc758 \uc801\ud569\uc131 \uad00\ub9ac\n\\end{itemize}\n\n\\subsection{\uc2dc\ud5d8}\n\\[\n\\text{\ubaa8\ub4c8\uc2dc\ud5d8}\\rightarrow\\text{\ubaa8\ub4c8 \ud1b5\ud569\uc2dc\ud5d8}\\rightarrow\\text{HW\/SW \ud1b5\ud569\uc2dc\ud5d8}\\rightarrow\\text{\uc804\uccb4 \uc2dc\uc2a4\ud15c\uc2dc\ud5d8}\\rightarrow\\text{Validation}\n\\]\n\uc815\uc0c1\uae30\ub2a5\ubfd0 \uc544\ub2c8\ub77c \uacbd\uacc4\uac12, \ubc94\uc704 \ubc16 \uc785\ub825, Timeout, \uc0c1\ucda9 \uba85\ub839, \ud1b5\uc2e0\uc911\ub2e8, \ube44\uc815\uc0c1 \uc0c1\ud0dc\uc804\uc774 \ubc0f \uc758\ub3c4\ud558\uc9c0 \uc54a\uc740 \uae30\ub2a5\uc744 \uc2dc\ud5d8\ud574\uc57c \ud55c\ub2e4.\n\n\\subsection{\ud615\uc0c1\uad00\ub9ac}\n\ud615\uc0c1\uad00\ub9ac\ub294 \uc694\uad6c\uc0ac\ud56d, \uc124\uacc4\ubb38\uc11c, PLC \ud504\ub85c\uadf8\ub7a8, Function Block, Parameter, Compiler, Engineering Tool, Firmware, \uc2dc\ud5d8\uc808\ucc28 \ubc0f \uc2dc\ud5d8\uacb0\uacfc\ub97c \ud558\ub098\uc758 \uc2b9\uc778 \ud615\uc0c1\uc73c\ub85c \uad00\ub9ac\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \ubaa9\uc801\uc740 \\textbf{\uc124\uacc4\ud55c \uc2dc\uc2a4\ud15c, \uc2dc\ud5d8\ud55c \uc2dc\uc2a4\ud15c \ubc0f \uc2e4\uc81c \uc124\uce58\ub41c \uc2dc\uc2a4\ud15c\uc758 \ub3d9\uc77c\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \uac83}\uc774\ub2e4.\n\n\\subsection{\ubcc0\uacbd\uad00\ub9ac}\n\\[\n\\text{\ubcc0\uacbd \uc694\uccad}\\rightarrow\\text{\uc601\ud5a5\ubd84\uc11d}\\rightarrow\\text{\uc2b9\uc778}\\rightarrow\\text{\uad6c\ud604}\\rightarrow\\text{\uc7ac\uac80\uc99d}\\rightarrow\\text{\uc0c8 \uae30\uc900\uc120}\n\\]\nSIL\uc774 \ub192\uc744\uc218\ub85d \uc7ac\uac80\uc99d \ubc94\uc704\uc640 \ub3c5\ub9bd\uc131\uc774 \uac15\ud654\ub41c\ub2e4.\n\n\\boxnote{\\textbf{Chapter 4\uc758 \uacb0\ub860}\\\\\n\uc548\uc804\uc18c\ud504\ud2b8\uc6e8\uc5b4\uc5d0 \uc624\ub958\uac00 \uc5c6\ub2e4\uace0 \uc120\uc5b8\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, \uc624\ub958\ub97c \uc608\ubc29\u00b7\ubc1c\uacac\u00b7\ud1b5\uc81c\ud558\uae30 \uc704\ud55c \uc0dd\uba85\uc8fc\uae30\ub97c \uc801\uc6a9\ud558\uace0 \uadf8 \uc218\ud589 \uc99d\uac70\ub85c \ubaa9\ud45c SIL\uc744 \uc785\uc99d\ud55c\ub2e4.}\n\n\\section{\ub2e4\uc12f Chapter\uc758 \ud1b5\ud569 \uad00\uacc4}\n\n\\begin{enumerate}\n\\item \\textbf{\uc704\ud5d8 \uc778\uc2dd --- Chapter 1}: \uc0ac\uace0 \uc2dc\ub098\ub9ac\uc624\ub97c \uc2dd\ubcc4\ud558\uace0 \ub79c\ub364 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uad6c\ubd84\ud55c\ub2e4.\n\\item \\textbf{\ubaa9\ud45c \uacb0\uc815 --- Chapter 2}: \ud544\uc694\ud55c \uc704\ud5d8\uc800\uac10\ub7c9\uc744 \uacc4\uc0b0\ud558\uace0 \uac01 \uc548\uc804\uae30\ub2a5\uc5d0 \ubaa9\ud45c SIL\uc744 \ubd80\uc5ec\ud55c\ub2e4.\n\\item \\textbf{\uc815\ub7c9\ud3c9\uac00 --- Chapter 5}: \uc2e0\ub8b0\ub3c4 \ubaa8\ub378\uc744 \ub9cc\ub4e4\uace0 PFD \ub610\ub294 PFH\uac00 \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4.\n\\item \\textbf{\ud558\ub4dc\uc6e8\uc5b4\u00b7\uc2dc\uc2a4\ud15c \uad6c\ud604 --- Chapter 3}: SRS, \ub3c5\ub9bd\uc131, SFF, HFT, \uc9c4\ub2e8, \uc2dc\ud5d8 \ubc0f Validation\uc73c\ub85c \ud558\ub4dc\uc6e8\uc5b4 \uc801\ud569\uc131\uc744 \uc785\uc99d\ud55c\ub2e4.\n\\item \\textbf{\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uad6c\ud604 --- Chapter 4}: V-Model, \uad6c\uc870\ud654 \uc124\uacc4, \uc81c\ud55c\ub41c \uc5b8\uc5b4, \uc2dc\ud5d8 \ubc0f \ud615\uc0c1\uad00\ub9ac\ub85c \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ud1b5\uc81c\ud55c\ub2e4.\n\\end{enumerate}\n\n\\[\n\\boxed{\\begin{aligned}\n\\text{Chapter 1}&:\\ \\text{\uc65c \uc548\uc804\ubb34\uacb0\uc131\uc774 \ud544\uc694\ud55c\uac00}\\\\\n\\text{Chapter 2}&:\\ \\text{\uc5b4\ub290 \uc218\uc900\uc758 SIL\uc774 \ud544\uc694\ud55c\uac00}\\\\\n\\text{Chapter 5}&:\\ \\text{\uace0\uc7a5\ud655\ub960\uc774 \ubaa9\ud45c\ub97c \ub9cc\uc871\ud558\ub294\uac00}\\\\\n\\text{Chapter 3}&:\\ \\text{\ud558\ub4dc\uc6e8\uc5b4\uc640 \uc2dc\uc2a4\ud15c\uc774 \uc801\uc808\ud558\uac8c \uc124\uacc4\ub418\uc5c8\ub294\uac00}\\\\\n\\text{Chapter 4}&:\\ \\text{\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uccb4\uacc4\uc801 \uace0\uc7a5\uc774 \ud1b5\uc81c\ub418\uc5c8\ub294\uac00}\n\\end{aligned}}\n\\]\n\n\\boxnote{\\textbf{\ucd5c\uc885 \uc815\ub9ac}\\\\\n\uc704\ud5d8\uc744 \uc2dd\ubcc4\ud558\uace0 \ubaa9\ud45c SIL\uc744 \uacb0\uc815\ud55c \ub4a4, \uc2e0\ub8b0\ub3c4 \ubaa8\ub378\ub85c \ub79c\ub364 \ud558\ub4dc\uc6e8\uc5b4 \uace0\uc7a5\uc744 \uacc4\uc0b0\ud55c\ub2e4. \uc774\ud6c4 \ud558\ub4dc\uc6e8\uc5b4 \uc544\ud0a4\ud14d\ucc98\uc640 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc0dd\uba85\uc8fc\uae30\ub97c \ud1b5\ud574 \uc815\ub7c9\uc801\u00b7\uc815\uc131\uc801 \uc694\uad6c\ub97c \ubaa8\ub450 \ucda9\uc871\ud558\uace0, \uc2dc\ud5d8\u00b7\uc6b4\uc804\u00b7\ubcc0\uacbd\uc758 \uac1d\uad00\uc801 \uc99d\uac70\ub85c \uc801\ud569\uc131\uc744 \uc785\uc99d\ud55c\ub2e4.}\n\n\\section{\uae30\uc220\uc0ac \ub2f5\uc548\uc6a9 \ud575\uc2ec \uc694\uc57d}\n\\begin{center}\n\\begin{tabularx}{\\textwidth}{p{2.5cm} X}\n\\toprule\n\\textbf{\uad6c\ubd84} & \\textbf{\ud575\uc2ec \ud45c\ud604} \\\\\n\\midrule\nChapter 1 & \uae30\ub2a5\uc548\uc804\uc740 \ud5c8\uc6a9 \uac00\ub2a5\ud55c \uc704\ud5d8\uc744 \uc124\uc815\ud558\uace0 \uc0dd\uba85\uc8fc\uae30 \uc804\ubc18\uc5d0\uc11c \ub79c\ub364 \uace0\uc7a5\uacfc \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \uad00\ub9ac\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4. \\\\\nChapter 2 & \uc704\ud5d8\ubd84\uc11d\uacfc \ubcf4\ud638\uacc4\uce35 \ud3c9\uac00\ub97c \ud1b5\ud574 \uac01 \uc548\uc804\uae30\ub2a5\uc758 \ubaa9\ud45c SIL\uc744 \uacb0\uc815\ud55c\ub2e4. \\\\\nChapter 5 & \uace0\uc7a5\ub960, \uc9c4\ub2e8, \uc2dc\ud5d8\uc8fc\uae30, \uc218\ub9ac\uc2dc\uac04, \uc911\ubcf5 \ubc0f CCF\ub97c \ubc18\uc601\ud558\uc5ec PFD \ub610\ub294 PFH\ub97c \uacc4\uc0b0\ud55c\ub2e4. \\\\\nChapter 3 & SRS, \ub3c5\ub9bd\uc131, SFF, HFT, \ud1b5\ud569\uc2dc\ud5d8 \ubc0f Validation\uc73c\ub85c \ud558\ub4dc\uc6e8\uc5b4\uc640 \uc2dc\uc2a4\ud15c \uc801\ud569\uc131\uc744 \uc785\uc99d\ud55c\ub2e4. \\\\\nChapter 4 & V-Model, \uc81c\ud55c\ub41c \uc5b8\uc5b4, \ubc29\uc5b4\uc801 \ucf54\ub529, \ub2e8\uacc4\ubcc4 \uc2dc\ud5d8 \ubc0f \ud615\uc0c1\uad00\ub9ac\ub85c \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uccb4\uacc4\uc801 \uace0\uc7a5\uc744 \ud1b5\uc81c\ud55c\ub2e4. \\\\\n\\bottomrule\n\\end{tabularx}\n\\end{center}\n\n\\vfill\n\\begin{center}\n\\small \ubcf8 \ubb38\uc11c\ub294 \ud559\uc2b5\uc6a9 \uc694\uc57d\uc774\uba70, \uc138\ubd80 \uc801\uc6a9 \uc2dc \ud574\ub2f9 IEC 61508 \uc6d0\ubb38\uacfc \ud504\ub85c\uc81d\ud2b8 \uc808\ucc28\ub97c \ud568\uaed8 \ud655\uc778\ud574\uc57c \ud55c\ub2e4.\n\\end{center}\n\n\\end{document}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>IEC 61508 \uae30\ub2a5\uc548\uc804 \ud750\ub984 \uc815\ub9ac \uc778\uc1c4 \/ PDF \uc800\uc7a5 IEC 61508 \uae30\ub2a5\uc548\uc804 \ud750\ub984 \uc815\ub9ac Chapter 1 \u2192 Chapter 2 \u2192 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