{"id":9364,"date":"2026-08-12T21:47:26","date_gmt":"2026-08-12T12:47:26","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=9364"},"modified":"2026-08-15T20:50:15","modified_gmt":"2026-08-15T11:50:15","slug":"%ec%86%8c%ed%94%84%ed%8a%b8%ec%9b%a8%ec%96%b4-%ea%b0%9c%eb%b0%9c-%ed%94%84%eb%a0%88%ec%9e%84%ec%9b%8c%ed%81%ac","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/%ec%86%8c%ed%94%84%ed%8a%b8%ec%9b%a8%ec%96%b4-%ea%b0%9c%eb%b0%9c-%ed%94%84%eb%a0%88%ec%9e%84%ec%9b%8c%ed%81%ac\/","title":{"rendered":"\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c \ud504\ub808\uc784\uc6cc\ud06c"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\ub514\uc9c0\ud138 I&amp;C \uc2dc\uc2a4\ud15c\uc758 \uc2e0\ub8b0\uc131\u00b7\uc548\uc804\uc131 \ud655\ubcf4 \uae30\uc220<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. \ud575\uc2ec \uac1c\ub150<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ub514\uc9c0\ud138 I&amp;C(Instrumentation and Control)\ub294 \uc13c\uc11c \uc785\ub825\uc744 PLC, DCS, \uc548\uc804 PLC \ub610\ub294 \ucef4\ud4e8\ud130 \uae30\ubc18 \ubcf4\ud638\uacc4\ud1b5\uc774 \ucc98\ub9ac\ud558\uc5ec \uac10\uc2dc\u00b7\uc81c\uc5b4\u00b7\ubcf4\ud638 \uae30\ub2a5\uc744 \uc218\ud589\ud558\ub294 \uc2dc\uc2a4\ud15c\uc774\ub2e4.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">[<br>\\text{Digital I&amp;C Risk}<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\\text{Random HW Failure}<br>+<br>\\text{Systematic SW Failure}<br>+<br>\\text{CCF}<br>+<br>\\text{Cyber Threat}<br>]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c \ub514\uc9c0\ud138 I&amp;C\uc758 \uc2e0\ub8b0\uc131\uacfc \uc548\uc804\uc131\uc740 \ub2e4\uc74c \ub124 \uac00\uc9c0 \ucd95\uc744 \ud1b5\ud569\ud558\uc5ec \ud655\ubcf4\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>V\ubaa8\ub378 \uae30\ubc18 V&amp;V \u2192 \ud615\uc0c1\uad00\ub9ac \u2192 \ub2e4\uc591\uc131\u00b7\ub3c5\ub9bd\uc131 \u2192 \uc2ec\uce35\ubc29\uc5b4\ud615 OT \ubcf4\uc548<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \uc8fc\uc694 \uad6d\uc81c\ud45c\uc900<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\ubd84\uc57c<\/th><th>\uc8fc\uc694 \ud45c\uc900<\/th><th>\ud575\uc2ec \ub0b4\uc6a9<\/th><\/tr><\/thead><tbody><tr><td>\uc77c\ubc18 \uae30\ub2a5\uc548\uc804<\/td><td>IEC 61508<\/td><td>E\/E\/PE \uc548\uc804\uad00\ub828 \uc2dc\uc2a4\ud15c\uc758 \uae30\ub2a5\uc548\uc804 \uc0dd\uba85\uc8fc\uae30<\/td><\/tr><tr><td>\ud504\ub85c\uc138\uc2a4 \ud50c\ub79c\ud2b8<\/td><td>IEC 61511<\/td><td>SIS\uc640 SIF\uc758 \uba85\uc138, \uc124\uacc4, \uc6b4\uc804, \uc720\uc9c0\ubcf4\uc218<\/td><\/tr><tr><td>\uc6d0\uc790\ub825 I&amp;C<\/td><td>IEC 61513<\/td><td>\uc548\uc804 \uc911\uc694 I&amp;C\uc758 \uc804\uccb4 \uc544\ud0a4\ud14d\ucc98\uc640 \uc0dd\uba85\uc8fc\uae30<\/td><\/tr><tr><td>\uc6d0\uc790\ub825 \uc18c\ud504\ud2b8\uc6e8\uc5b4<\/td><td>IEC 60880<\/td><td>Category A \uae30\ub2a5 \uc218\ud589 \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \uac1c\ubc1c \ubc0f V&amp;V<\/td><\/tr><tr><td>\uc6d0\uc790\ub825 CCF<\/td><td>IEC 62340<\/td><td>Category A I&amp;C\uc758 \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5 \ub300\uc751<\/td><\/tr><tr><td>\ucca0\ub3c4 \uc18c\ud504\ud2b8\uc6e8\uc5b4<\/td><td>IEC 62279<\/td><td>\ucca0\ub3c4 \uc81c\uc5b4\u00b7\ubcf4\ud638 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c<\/td><\/tr><tr><td>\ucca0\ub3c4 RAMS<\/td><td>IEC 62278<\/td><td>\uc2e0\ub8b0\uc131\u00b7\uac00\uc6a9\uc131\u00b7\uc720\uc9c0\ubcf4\uc218\uc131\u00b7\uc548\uc804\uc131 \uc0dd\uba85\uc8fc\uae30<\/td><\/tr><tr><td>\uc0b0\uc5c5\uc81c\uc5b4 \ubcf4\uc548<\/td><td>IEC 62443<\/td><td>IACS \ubcf4\uc548\uad00\ub9ac, \uc704\ud5d8\ud3c9\uac00, \uc2dc\uc2a4\ud15c\u00b7\uc81c\ud488 \ubcf4\uc548<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. V\ubaa8\ub378 \uae30\ubc18 \uac1c\ubc1c\uacfc V&amp;V<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 V\ubaa8\ub378<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\ubaa8\ub378\uc740 \uac1c\ubc1c\ub2e8\uacc4\uc640 \uc2dc\ud5d8\ub2e8\uacc4\ub97c \ub300\uc751\uc2dc\ucf1c \uc694\uad6c\uc0ac\ud56d\ubd80\ud130 \uad6c\ud604, \uc2dc\ud5d8 \ubc0f \uc6b4\uc6a9 \uc801\ud569\uc131\uae4c\uc9c0 \ucd94\uc801\ud558\ub294 \uc0dd\uba85\uc8fc\uae30 \ubaa8\ub378\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\uc0ac\uc6a9\uc790 \uc694\uad6c\uc0ac\ud56d ---------------------- \uc6b4\uc6a9 \uc801\ud569\uc131 \ud655\uc778\n      |                                  ^\n\uc2dc\uc2a4\ud15c \uc694\uad6c\uc0ac\ud56d ---------------------- \uc2dc\uc2a4\ud15c Validation\n      |                                  ^\n\uc2dc\uc2a4\ud15c \uc544\ud0a4\ud14d\ucc98 ---------------------- \uc2dc\uc2a4\ud15c \ud1b5\ud569\uc2dc\ud5d8\n      |                                  ^\nSW\/HW \uc694\uad6c\uc0ac\ud56d ---------------------- SW\/HW \ud1b5\ud569\uc2dc\ud5d8\n      |                                  ^\n\uc0c1\uc138\uc124\uacc4 ----------------------------- \ub2e8\uc704\uc2dc\ud5d8\n      \\----------- \uad6c\ud604\u00b7\ucf54\ub529 -----------\/\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Verification<\/strong>: \uc81c\ud488\uc744 \uba85\uc138\uc5d0 \ub9de\uac8c \uc62c\ubc14\ub974\uac8c \ub9cc\ub4e4\uc5c8\ub294\uac00?<\/li>\n\n\n\n<li><strong>Validation<\/strong>: \uc0ac\uc6a9 \ubaa9\uc801\uc5d0 \uc801\ud569\ud55c \uc62c\ubc14\ub978 \uc81c\ud488\uc744 \ub9cc\ub4e4\uc5c8\ub294\uac00?<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 \uc694\uad6c\uc0ac\ud56d \ucd94\uc801\uc131 \ub9e4\ud2b8\ub9ad\uc2a4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc694\uad6c\uc0ac\ud56d \ucd94\uc801\uc131 \ub9e4\ud2b8\ub9ad\uc2a4(Requirements Traceability Matrix, RTM)\ub294 \uc704\ud5d8\uc6d0, \uc548\uc804\uc694\uad6c\uc0ac\ud56d, \uc124\uacc4, \uad6c\ud604, \uc2dc\ud5d8\uacb0\uacfc\ub97c \uc591\ubc29\ud5a5\uc73c\ub85c \uc5f0\uacb0\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Forward Traceability<\/strong><br>\ubaa8\ub4e0 \uc694\uad6c\uc0ac\ud56d\uc774 \uc124\uacc4, \ucf54\ub4dc \ubc0f \uc2dc\ud5d8\uc73c\ub85c \uad6c\ud604\ub418\uc5c8\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4.<\/li>\n\n\n\n<li><strong>Backward Traceability<\/strong><br>\ubaa8\ub4e0 \uc124\uacc4\uc640 \ucf54\ub4dc\uac00 \uc2b9\uc778\ub41c \uc694\uad6c\uc0ac\ud56d\uc5d0\uc11c \uc720\ub798\ud588\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\ub2f5\uc548 \ud575\uc2ec\ubb38\uc7a5<\/strong><br>RTM\uc740 \uc694\uad6c\uc0ac\ud56d \ub204\ub77d, \uacfc\uc789 \uad6c\ud604, \ubcc0\uacbd \uc601\ud5a5 \ubc0f \uc2dc\ud5d8 \ub204\ub77d\uc744 \ud1b5\uc81c\ud558\ub294 V&amp;V\uc758 \ud575\uc2ec \uad00\ub9ac\uc218\ub2e8\uc774\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">3.3 MC\/DC<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">MC\/DC(Modified Condition\/Decision Coverage)\ub294 \ubcf5\ud569 \uacb0\uc815\ubb38\uc744 \uad6c\uc131\ud558\ub294 \uac01 \uc870\uac74\uc774 \ub2e4\ub978 \uc870\uac74\uc758 \uc601\ud5a5\uc744 \uace0\uc815\ud55c \uc0c1\ud0dc\uc5d0\uc11c \uacb0\uc815 \uacb0\uacfc\uc5d0 \ub3c5\ub9bd\uc801\uc73c\ub85c \uc601\ud5a5\uc744 \uc8fc\ub294\uc9c0\ub97c \ud655\uc778\ud558\ub294 \uad6c\uc870\uc801 \ucee4\ubc84\ub9ac\uc9c0 \uae30\uc900\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ub2e4\uc74c\uacfc \uac19\uc740 \ubcf4\ud638\ub17c\ub9ac\uac00 \uc788\ub2e4\uace0 \uac00\uc815\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[<br>Y=(A\\land B)\\lor C<br>]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A, B, C \uac01\uac01\uc774 \ub2e8\ub3c5\uc73c\ub85c (Y)\uc758 \ucc38\uacfc \uac70\uc9d3\uc744 \ubcc0\uacbd\ud558\ub294 \uc2dc\ud5d8\uc30d\uc744 \ud655\ubcf4\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MC\/DC\uc758 \uc8fc\uc694 \ud2b9\uc9d5\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub2e8\uc21c \ubb38\uc7a5 \ucee4\ubc84\ub9ac\uc9c0\ubcf4\ub2e4 \ub17c\ub9ac \uac80\uc99d\ub825\uc774 \ub192\ub2e4.<\/li>\n\n\n\n<li>\ubd84\uae30 \ucee4\ubc84\ub9ac\uc9c0\ubcf4\ub2e4 \uac1c\ubcc4 \uc870\uac74\uc758 \uc601\ud5a5\uc744 \uba85\ud655\ud788 \ud655\uc778\ud560 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>AND\u00b7OR \uacb0\ud569 \uc624\ub958\ub97c \uac80\ucd9c\ud558\ub294 \ub370 \uc720\ub9ac\ud558\ub2e4.<\/li>\n\n\n\n<li>\ubc18\uc804\uc870\uac74 \uc624\ub958\uc640 Masking\ub41c \uc870\uac74\uc744 \ucc3e\ub294 \ub370 \ud6a8\uacfc\uc801\uc774\ub2e4.<\/li>\n\n\n\n<li>\uc694\uad6c\uc0ac\ud56d \uc624\ub958\uc640 \uc778\ud130\ud398\uc774\uc2a4 \uc624\ub958\uae4c\uc9c0 \ubcf4\uc7a5\ud558\uc9c0\ub294 \uc54a\ub294\ub2e4.<\/li>\n\n\n\n<li>\uc2e4\uc2dc\uac04 \ud0c0\uc774\ubc0d \uc624\ub958\ub294 \ubcc4\ub3c4 \uc2dc\ud5d8\uc774 \ud544\uc694\ud558\ub2e4.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\uc8fc\uc758\uc0ac\ud56d<\/strong><br>MC\/DC\uc758 \uc758\ubb34 \uc218\uc900\uc740 \uc0b0\uc5c5\ubcc4 \ud45c\uc900\uacfc \uc548\uc804\ub4f1\uae09\uc5d0 \ub530\ub77c \uad6c\ubd84\ud574\uc57c \ud55c\ub2e4. \ud56d\uacf5 Level A\uc758 \uc694\uad6c\ub97c \uc6d0\uc790\ub825 Category A\ub098 \ucca0\ub3c4 SIL 4\uc5d0 \uadf8\ub300\ub85c \ub4f1\uce58\ud574\uc11c\ub294 \uc548 \ub41c\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \ud615\uc0c1\uad00\ub9ac\uc640 \uae30\uc900\uc120<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ud615\uc0c1\uad00\ub9ac(Configuration Management)\ub294 \ud615\uc0c1\ud56d\ubaa9\uc744 \uc2dd\ubcc4\ud558\uace0 \ubcc0\uacbd\uc744 \ud1b5\uc81c\ud558\uba70, \uc0c1\ud0dc\ub97c \uae30\ub85d\ud558\uace0 \uc2e4\uc81c \uc81c\ud488\uacfc \uae30\uc900\uc120\uc758 \uc77c\uce58 \uc5ec\ubd80\ub97c \uac10\uc0ac\ud558\ub294 \ud65c\ub3d9\uc774\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 3\ub300 \uae30\uc900\uc120<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\uae30\uc900\uc120<\/th><th>\ud575\uc2ec \uac1c\ub150<\/th><\/tr><\/thead><tbody><tr><td>Functional Baseline<\/td><td>\uc2dc\uc2a4\ud15c\uc774 \uc218\ud589\ud574\uc57c \ud560 \uae30\ub2a5, \uc131\ub2a5 \ubc0f \uc778\ud130\ud398\uc774\uc2a4 \uc815\uc758<\/td><\/tr><tr><td>Allocated Baseline<\/td><td>\uc0c1\uc704 \uae30\ub2a5\uc744 HW, SW, \uc13c\uc11c, \ub124\ud2b8\uc6cc\ud06c \ub4f1 \ud558\uc704 \uad6c\uc131\ud488\uc5d0 \ud560\ub2f9<\/td><\/tr><tr><td>Product Baseline<\/td><td>\uc2e4\uc81c \uc81c\uc791\u00b7\ubc30\ud3ec\ub420 \ucf54\ub4dc, \ub3c4\uba74, \uc124\uc815, \uc2dc\ud5d8\uc808\ucc28 \ubc0f \ub9e4\ub274\uc5bc \ud655\uc815<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Functional Baseline<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2dc\uc2a4\ud15c\uc774 \uc218\ud589\ud574\uc57c \ud560 \uae30\ub2a5\uacfc \uc131\ub2a5\uc744 \uc815\uc758\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \ub0b4\uc6a9\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc548\uc804\uae30\ub2a5<\/li>\n\n\n\n<li>\uc6b4\uc804\uae30\ub2a5<\/li>\n\n\n\n<li>\uc131\ub2a5 \uc694\uad6c\uc0ac\ud56d<\/li>\n\n\n\n<li>\uc778\ud130\ud398\uc774\uc2a4 \uc694\uad6c\uc0ac\ud56d<\/li>\n\n\n\n<li>\uc751\ub2f5\uc2dc\uac04<\/li>\n\n\n\n<li>\ud5c8\uc6a9\uc624\ucc28<\/li>\n\n\n\n<li>\uc548\uc804\uc0c1\ud0dc<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Allocated Baseline<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0c1\uc704 \uae30\ub2a5\uc744 \ud558\uc704 \uad6c\uc131\ud488\uc5d0 \ud560\ub2f9\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \ub300\uc0c1\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc13c\uc11c<\/li>\n\n\n\n<li>PLC<\/li>\n\n\n\n<li>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \ubaa8\ub4c8<\/li>\n\n\n\n<li>\ub124\ud2b8\uc6cc\ud06c<\/li>\n\n\n\n<li>HMI<\/li>\n\n\n\n<li>\uad6c\ub3d9\uae30<\/li>\n\n\n\n<li>\ud1b5\uc2e0 \uc778\ud130\ud398\uc774\uc2a4<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Product Baseline<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\uc81c \uc81c\uc791\u00b7\uc124\uce58\u00b7\uc6b4\uc601\ud560 \uc81c\ud488\uc758 \uc0c1\uc138 \ud615\uc0c1\uc744 \ud655\uc815\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \ub0b4\uc6a9\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc2b9\uc778\ub41c PLC \ud504\ub85c\uadf8\ub7a8<\/li>\n\n\n\n<li>\uc2e4\ud589\ud30c\uc77c<\/li>\n\n\n\n<li>HMI \ud654\uba74<\/li>\n\n\n\n<li>\ubc29\ud654\ubcbd \uc815\ucc45<\/li>\n\n\n\n<li>\ud1b5\uc2e0 \uc124\uc815<\/li>\n\n\n\n<li>\uc785\ucd9c\ub825 \ub370\uc774\ud130\ubca0\uc774\uc2a4<\/li>\n\n\n\n<li>\uc2dc\ud5d8\uc808\ucc28<\/li>\n\n\n\n<li>\uc6b4\uc804 \ubc0f \uc720\uc9c0\ubcf4\uc218 \ub9e4\ub274\uc5bc<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 CCB \uc2b9\uc778 \uc808\ucc28<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud615\uc0c1\ud1b5\uc81c\uc704\uc6d0\ud68c(Configuration Control Board, CCB)\ub294 \uc2b9\uc778\ub41c \uae30\uc900\uc120\uc758 \ubcc0\uacbd\uc744 \uc2ec\uc758\ud558\uace0 \uc2b9\uc778\u00b7\ubcf4\ub958\u00b7\uac70\ubd80\ud558\ub294 \uc870\uc9c1\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\ubcc0\uacbd\uc694\uccad\n   \u2193\n\uc601\ud5a5\ubd84\uc11d\n   \u2193\nCCB \uc2ec\uc758\n   \u2193\n\ubcc0\uacbd \uad6c\ud604\n   \u2193\n\ub2e8\uc704\u00b7\ud1b5\ud569\u00b7\ud68c\uadc0\uc2dc\ud5d8\n   \u2193\n\ud615\uc0c1\uac10\uc0ac\n   \u2193\n\uae30\uc900\uc120 \uac31\uc2e0\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">CCB\ub294 \ub2e4\uc74c \ud56d\ubaa9\uc744 \uac80\ud1a0\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uae30\ub2a5 \uc601\ud5a5<\/li>\n\n\n\n<li>\uc548\uc804 \uc601\ud5a5<\/li>\n\n\n\n<li>\ubcf4\uc548 \uc601\ud5a5<\/li>\n\n\n\n<li>\ube44\uc6a9 \uc601\ud5a5<\/li>\n\n\n\n<li>\uc77c\uc815 \uc601\ud5a5<\/li>\n\n\n\n<li>\uc2dc\ud5d8\ubc94\uc704<\/li>\n\n\n\n<li>\uc6b4\uc804 \uc601\ud5a5<\/li>\n\n\n\n<li>\ubcf5\uad6c \uac00\ub2a5\uc131<\/li>\n\n\n\n<li>Rollback \ubc29\uc548<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\ub2f5\uc548 \ud575\uc2ec\ubb38\uc7a5<\/strong><br>CCB\ub294 \ubcc0\uacbd \uc790\uccb4\ubcf4\ub2e4 \ubcc0\uacbd\uc73c\ub85c \uc778\ud55c \uc548\uc804\uc131\u00b7\ubcf4\uc548\uc131\u00b7\uac80\uc99d\ubc94\uc704\u00b7\ubcf5\uad6c\uac00\ub2a5\uc131\uc744 \ud1b5\uc81c\ud558\uc5ec \uae30\uc900\uc120\uc758 \ubb34\uacb0\uc131\uc744 \ubcf4\ud638\ud55c\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5\uacfc \ub2e4\uc591\uc131 \uc124\uacc4<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">5.1 \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5(Common Cause Failure, CCF)\uc740 \ud558\ub098\uc758 \uc6d0\uc778 \ub610\ub294 \uc0c1\ud638 \uc5f0\uad00\ub41c \uc6d0\uc778\uc73c\ub85c \ub458 \uc774\uc0c1\uc758 \ucc44\ub110\uc774\ub098 \uacc4\ud1b5\uc774 \ub3d9\uc2dc\uc5d0 \uae30\ub2a5\uc744 \uc0c1\uc2e4\ud558\ub294 \uace0\uc7a5\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \uc6d0\uc778\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub3d9\uc77c \uc694\uad6c\uc0ac\ud56d \uc624\ub958<\/li>\n\n\n\n<li>\ub3d9\uc77c \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uacb0\ud568<\/li>\n\n\n\n<li>\ub3d9\uc77c \uc6b4\uc601\uccb4\uc81c<\/li>\n\n\n\n<li>\ub3d9\uc77c \ucef4\ud30c\uc77c\ub7ec<\/li>\n\n\n\n<li>\ub3d9\uc77c \ud558\ub4dc\uc6e8\uc5b4<\/li>\n\n\n\n<li>\uacf5\ud1b5 \uc804\uc6d0<\/li>\n\n\n\n<li>\uacf5\ud1b5 \ud1b5\uc2e0\ub9dd<\/li>\n\n\n\n<li>\uacf5\ud1b5 \ub0c9\uac01\uc124\ube44<\/li>\n\n\n\n<li>\ub3d9\uc77c \uc720\uc9c0\ubcf4\uc218 \uc808\ucc28<\/li>\n\n\n\n<li>\ub3d9\uc77c \uc124\uc815\uac12 \uc624\ub958<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5.2 2oo3 \uad6c\uc870<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">2oo3(2-out-of-3)\ub294 \uc138 \uac1c \ucc44\ub110 \uc911 \ub450 \uac1c \uc774\uc0c1\uc774 \ub3d9\uc77c\ud55c \ud310\ub2e8\uc744 \ub0b4\ub9ac\uba74 \ucd5c\uc885 \ucd9c\ub825\uc744 \ubc1c\uc0dd\uc2dc\ud0a4\ub294 \ud22c\ud45c\uad6c\uc870\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Channel A \u2500\u2510\nChannel B \u2500\u253c\u2500\u2500 2oo3 Voter \u2500\u2500 Final Trip\nChannel C \u2500\u2518\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uac01 \ucc44\ub110\uc758 \ub3c5\ub9bd \uc2e4\ud328\ud655\ub960\uc744 (q)\ub77c\uace0 \ud558\uba74 2oo3 \uc2dc\uc2a4\ud15c\uc758 \uc2e4\ud328\ud655\ub960\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">[<br>Q_{2oo3}<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">3q^2(1-q)+q^3<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">3q^2-2q^3<br>]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(q)\uac00 \ub9e4\uc6b0 \uc791\uc73c\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uadfc\uc0ac\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[<br>Q_{2oo3}\\approx3q^2<br>]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c 2oo3 \uad6c\uc870\ub294 \ub3c5\ub9bd\uc801\uc778 \uc6b0\ubc1c\uace0\uc7a5\uc5d0 \ub300\ud574\uc11c\ub294 \ub192\uc740 \uc2e0\ub8b0\uc131\uc744 \uc81c\uacf5\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub7ec\ub098 \ub3d9\uc77c \uc18c\ud504\ud2b8\uc6e8\uc5b4, \uacf5\ud1b5 \uc804\uc6d0, \uacf5\ud1b5 \ub124\ud2b8\uc6cc\ud06c \ub610\ub294 \uacf5\ud1b5 \ud658\uacbd\uc744 \uacf5\uc720\ud558\uba74 \ub3c5\ub9bd\uc131 \uac00\uc815\uc774 \uae68\uc9c4\ub2e4.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Redundancy\ub294 \uc6b0\ubc1c\uace0\uc7a5 \ub0b4\uc131\uc744 \ub192\uc778\ub2e4.<\/strong><br><strong>Diversity\uc640 Independence\ub294 CCF \uc704\ud5d8\uc744 \uc904\uc778\ub2e4.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">5.3 \ub2e4\uc591\uc131 \uc124\uacc4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc591\uc131(Diversity)\uc740 \ub3d9\uc77c \uc548\uc804\ubaa9\ud45c\ub97c \uc11c\ub85c \ub2e4\ub978 \uc6d0\ub9ac, \uae30\uc220, \uad6c\ud604 \ub610\ub294 \uc870\uc9c1\uc744 \ud1b5\ud574 \ub2ec\uc131\ud558\ub294 \uc124\uacc4\uc6d0\uce59\uc774\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\ub2e4\uc591\uc131 \uc720\ud615<\/th><th>\uc801\uc6a9 \uc608<\/th><\/tr><\/thead><tbody><tr><td>\uae30\ub2a5\uc801 \ub2e4\uc591\uc131<\/td><td>\uc11c\ub85c \ub2e4\ub978 \ubb3c\ub9ac\ub7c9\uc73c\ub85c \ub3d9\uc77c \uc548\uc804\ubaa9\ud45c \ub2ec\uc131<\/td><\/tr><tr><td>\uc2e0\ud638 \ub2e4\uc591\uc131<\/td><td>\uc11c\ub85c \ub2e4\ub978 \uc13c\uc11c\uc640 \uce21\uc815\uc6d0\ub9ac \uc0ac\uc6a9<\/td><\/tr><tr><td>\uc124\uacc4 \ub2e4\uc591\uc131<\/td><td>\uc11c\ub85c \ub2e4\ub978 \uc54c\uace0\ub9ac\uc998\uacfc \uc544\ud0a4\ud14d\ucc98 \uc801\uc6a9<\/td><\/tr><tr><td>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \ub2e4\uc591\uc131<\/td><td>\ub2e4\ub978 \uc5b8\uc5b4, OS, \uac1c\ubc1c\ub3c4\uad6c \ubc0f \uac1c\ubc1c\ud300 \uc801\uc6a9<\/td><\/tr><tr><td>\ud558\ub4dc\uc6e8\uc5b4 \ub2e4\uc591\uc131<\/td><td>\ub2e4\ub978 CPU, I\/O, \uc81c\uc870\uc0ac \ubc0f \uae30\uc220 \uc801\uc6a9<\/td><\/tr><tr><td>\ud1b5\uc2e0 \ub2e4\uc591\uc131<\/td><td>\ub2e4\ub978 \ud1b5\uc2e0\uacbd\ub85c\uc640 \ud504\ub85c\ud1a0\ucf5c \uc0ac\uc6a9<\/td><\/tr><tr><td>\uad00\ub9ac\uc801 \ub2e4\uc591\uc131<\/td><td>\ub3c5\ub9bd \uac1c\ubc1c\u00b7\uac80\uc99d\u00b7\ud615\uc0c1\uad00\ub9ac \uc870\uc9c1 \uc6b4\uc601<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc591\uc131\uc740 \ub2e8\uc21c\ud788 \uc81c\uc870\uc0ac\ub97c \ub2e4\ub974\uac8c \uc120\ud0dd\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uacf5\ud1b5 \uc2e4\ud328\uacbd\ub85c\ub97c \ubd84\uc11d\ud558\uace0 \uc774\ub97c \uc758\ub3c4\uc801\uc73c\ub85c \ucc28\ub2e8\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc591\uc131 \uc124\uacc4\uc758 \uc8fc\uc694 \ud55c\uacc4\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc124\uacc4\ube44 \uc99d\uac00<\/li>\n\n\n\n<li>\uc2dc\ud5d8\ube44 \uc99d\uac00<\/li>\n\n\n\n<li>\uc778\ud130\ud398\uc774\uc2a4 \ubcf5\uc7a1\ub3c4 \uc99d\uac00<\/li>\n\n\n\n<li>\uc720\uc9c0\ubcf4\uc218 \ubd80\ub2f4 \uc99d\uac00<\/li>\n\n\n\n<li>\uc608\ube44\ud488 \uc885\ub958 \uc99d\uac00<\/li>\n\n\n\n<li>\uc9c4\ub2e8\uc815\ubcf4 \ud574\uc11d \uc5b4\ub824\uc6c0<\/li>\n\n\n\n<li>\uacf5\ud1b5 \uc694\uad6c\uc0ac\ud56d \uc624\ub958\ub294 \uc81c\uac70\ud558\uc9c0 \ubabb\ud560 \uc218 \uc788\uc74c<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. IEC 62443 \uae30\ubc18 OT \ubcf4\uc548<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">6.1 \uc2ec\uce35\ubc29\uc5b4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2ec\uce35\ubc29\uc5b4(Defense in Depth)\ub294 \ud558\ub098\uc758 \ubcf4\uc548\ud1b5\uc81c\uac00 \uc2e4\ud328\ud574\ub3c4 \ub2e4\uc74c \ubc29\uc5b4\uacc4\uce35\uc774 \uacf5\uaca9 \ud655\uc0b0\uc744 \uc81c\ud55c\ud558\ub3c4\ub85d \uc870\uc9c1, \ubb3c\ub9ac, \ub124\ud2b8\uc6cc\ud06c, \ud638\uc2a4\ud2b8 \ubc0f \ubcf5\uad6c\uc218\ub2e8\uc744 \ub2e4\uce35\ud654\ud558\ub294 \uac1c\ub150\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\uc870\uc9c1\u00b7\ubcf4\uc548\uc815\ucc45\n      \u2193\n\ubb3c\ub9ac\uc801 \ucd9c\uc785\ud1b5\uc81c\n      \u2193\nIT\/OT \ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac\n      \u2193\nZone\u00b7Conduit \ubd84\ud560\n      \u2193\n\ubc29\ud654\ubcbd\u00b7DMZ\n      \u2193\n\ud638\uc2a4\ud2b8 \uac15\ud654\n      \u2193\n\uc0ac\uc6a9\uc790 \uc778\uc99d\u00b7\uad8c\ud55c\ud1b5\uc81c\n      \u2193\n\uc774\uc0c1\uc9d5\ud6c4 \ud0d0\uc9c0\n      \u2193\n\ubc31\uc5c5\u00b7\ubcf5\uad6c\u00b7\uc0ac\uace0\ub300\uc751\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">6.2 Zone\uacfc Conduit<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Zone<\/strong><br>\uc704\ud5d8\ub3c4, \uc911\uc694\ub3c4 \ubc0f \ubcf4\uc548 \uc694\uad6c\uc0ac\ud56d\uc774 \uc720\uc0ac\ud55c \uc790\uc0b0\uc758 \uc9d1\ud569\uc774\ub2e4.<\/li>\n\n\n\n<li><strong>Conduit<\/strong><br>Zone \uc0ac\uc774\uc5d0\uc11c \ud5c8\uc6a9\ub41c \ud1b5\uc2e0\uacbd\ub85c\uc774\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">IEC 62443-3-2\ub294 \uc2dc\uc2a4\ud15c\uc744 Zone\uacfc Conduit\ub85c \ubd84\ud560\ud558\uace0 \uc704\ud5d8\ud3c9\uac00\ub97c \ud1b5\ud574 \ubaa9\ud45c \ubcf4\uc548\uc218\uc900\uc778 SL-T\ub97c \uacb0\uc815\ud558\ub3c4\ub85d \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IEC 62443-3-3\uc740 \uc2dc\uc2a4\ud15c \uc218\uc900\uc758 \ubcf4\uc548\uc694\uad6c\uc0ac\ud56d\uc744 \uc815\uc758\ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6.3 \uc801\uc6a9 \uc544\ud0a4\ud14d\ucc98<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>Enterprise IT\n      |\nIndustrial DMZ\n      |\nOT Operations Zone\n      |\nBasic Control Zone\n      |\nField Zone\n\nSafety Zone ---- \uc81c\ud55c\ub41c Conduit ---- Monitoring\/DMZ\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \uc801\uc6a9\uc6d0\uce59\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IT\uc640 OT \ub124\ud2b8\uc6cc\ud06c\ub97c \ubd84\ub9ac\ud55c\ub2e4.<\/li>\n\n\n\n<li>IT\uc640 OT \uc0ac\uc774\uc5d0 DMZ\ub97c \uad6c\uc131\ud55c\ub2e4.<\/li>\n\n\n\n<li>SIS\uc640 BPCS\ub97c \ubd84\ub9ac\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ud5c8\uc6a9 \ud504\ub85c\ud1a0\ucf5c\uacfc \ud3ec\ud2b8\ub97c \ucd5c\uc18c\ud654\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc6d0\uaca9\uc811\uc18d\uc740 \uc2b9\uc778\uacfc \uc2dc\uac04\uc81c\ud55c\uc744 \uc801\uc6a9\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc6d0\uaca9\uc811\uc18d \uc774\ub825\uc744 \uae30\ub85d\ud55c\ub2e4.<\/li>\n\n\n\n<li>Engineering Workstation\uc744 \ubcc4\ub3c4 \ud1b5\uc81c\ud55c\ub2e4.<\/li>\n\n\n\n<li>USB\uc640 \uc774\ub3d9\uc2dd \ub9e4\uccb4\ub97c \ud1b5\uc81c\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ubc31\uc5c5\uacfc \ubcf5\uad6c\uc808\ucc28\ub97c \uc815\uae30\uc801\uc73c\ub85c \uac80\uc99d\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc548\uc804\uacc4\ud1b5\uc758 \ud1b5\uc2e0\uc740 \ucd5c\uc18c\ud654\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. \uae30\uc220\uc0ac\uc801 Trade-off<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\uae30\uc220<\/th><th>\uae30\ub300\ud6a8\uacfc<\/th><th>\ud55c\uacc4<\/th><\/tr><\/thead><tbody><tr><td>V\ubaa8\ub378\u00b7RTM<\/td><td>\ub204\ub77d \ubc29\uc9c0, \uac80\uc99d\uadfc\uac70 \ud655\ubcf4<\/td><td>\ubb38\uc11c\ub7c9\uacfc \uad00\ub9ac\ube44\uc6a9 \uc99d\uac00<\/td><\/tr><tr><td>MC\/DC<\/td><td>\ubcf5\ud569\ub17c\ub9ac \uac80\uc99d \uac15\ud654<\/td><td>\uc694\uad6c\uc0ac\ud56d\u00b7\ud0c0\uc774\ubc0d \uc624\ub958\ub294 \ubcc4\ub3c4 \uac80\uc99d \ud544\uc694<\/td><\/tr><tr><td>\ud615\uc0c1\uad00\ub9ac\u00b7CCB<\/td><td>\ubb34\ub2e8\ubcc0\uacbd \ubc29\uc9c0, \uc7ac\ud604\uc131 \ud655\ubcf4<\/td><td>\uae34\uae09\ubcc0\uacbd \uc18d\ub3c4 \uc800\ud558<\/td><\/tr><tr><td>2oo3<\/td><td>\ub2e8\uc77c \uc6b0\ubc1c\uace0\uc7a5 \ud5c8\uc6a9<\/td><td>CCF\uc5d0\ub294 \ucde8\uc57d<\/td><\/tr><tr><td>\ub2e4\uc591\uc131<\/td><td>\uacf5\ud1b5 \uc2e4\ud328\uacbd\ub85c \uac10\uc18c<\/td><td>\ube44\uc6a9\u00b7\ubcf5\uc7a1\ub3c4\u00b7\uc720\uc9c0\ubcf4\uc218 \ubd80\ub2f4 \uc99d\uac00<\/td><\/tr><tr><td>Zone\u00b7Conduit<\/td><td>\uce68\ud574\ud655\uc0b0 \uc81c\ud55c<\/td><td>\uc6b4\uc804\u00b7\uc9c4\ub2e8 \ud3b8\uc758\uc131 \uac10\uc18c<\/td><\/tr><tr><td>\ubcf4\uc548\ud328\uce58<\/td><td>\ucde8\uc57d\uc810 \uac10\uc18c<\/td><td>\uc7ac\uac80\uc99d\uacfc \uc124\ube44\uc815\uc9c0 \ud544\uc694<\/td><\/tr><tr><td>\ub3c5\ub9bd V&amp;V<\/td><td>\uac80\uc99d \uac1d\uad00\uc131 \ud5a5\uc0c1<\/td><td>\uc77c\uc815\uacfc \ube44\uc6a9 \uc99d\uac00<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8. \uad8c\uc7a5 \ub3c4\uc11c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1\uc21c\uc704<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Safety Critical Systems Handbook, 5th Edition<\/strong><br>David J. Smith, Kenneth G. L. Simpson<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \ud559\uc2b5\ub0b4\uc6a9\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IEC 61508<\/li>\n\n\n\n<li>IEC 61511<\/li>\n\n\n\n<li>SIL<\/li>\n\n\n\n<li>\uae30\ub2a5\uc548\uc804 \uc0dd\uba85\uc8fc\uae30<\/li>\n\n\n\n<li>\uace0\uc7a5\ub960<\/li>\n\n\n\n<li>\uc2e0\ub8b0\ub3c4 \uacc4\uc0b0<\/li>\n\n\n\n<li>\uc548\uc804\uc2dc\uc2a4\ud15c \uc124\uacc4<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4\uae30\uc220\uc0ac \uc900\ube44\uc5d0 \uac00\uc7a5 \uc6b0\uc120\uc801\uc73c\ub85c \ucd94\ucc9c\ud560 \uc218 \uc788\ub294 \ub3c4\uc11c\uc774\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2\uc21c\uc704<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Plant Hazard Analysis and Safety Instrumentation Systems, 2nd Edition<\/strong><br>Swapan Basu<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \ud559\uc2b5\ub0b4\uc6a9\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SIS<\/li>\n\n\n\n<li>SIF<\/li>\n\n\n\n<li>SIL<\/li>\n\n\n\n<li>\uc704\ud5d8\ubd84\uc11d<\/li>\n\n\n\n<li>\uc548\uc804\uacc4\uc7a5 \uc124\uacc4<\/li>\n\n\n\n<li>\ud50c\ub79c\ud2b8 \ud604\uc7a5 \uc801\uc6a9<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uae30\ub2a5\uc548\uc804 \uc774\ub860\uc744 \uc2e4\uc81c \uacf5\uc815\uacfc \uc5f0\uacb0\ud558\ub294 \ub370 \uc720\uc6a9\ud558\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3\uc21c\uc704<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Industrial Network Security, 3rd Edition<\/strong><br>Eric D. Knapp \uc678<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \ud559\uc2b5\ub0b4\uc6a9\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SCADA \ubcf4\uc548<\/li>\n\n\n\n<li>DCS \ubcf4\uc548<\/li>\n\n\n\n<li>PLC \ubcf4\uc548<\/li>\n\n\n\n<li>\ub124\ud2b8\uc6cc\ud06c \ubd84\ub9ac<\/li>\n\n\n\n<li>\uc2ec\uce35\ubc29\uc5b4<\/li>\n\n\n\n<li>OT \uacf5\uaca9\uc0ac\ub840<\/li>\n\n\n\n<li>\uc0b0\uc5c5\uc81c\uc5b4\ub9dd \ubcf4\uc548\uad6c\uc870<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">IEC 62443\uc758 \ubc30\uacbd\uc9c0\uc2dd\uc744 \uc774\ud574\ud558\ub294 \ub370 \uc801\ud569\ud558\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4\uc21c\uc704<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Software Engineering, 10th Edition<\/strong><br>Ian Sommerville<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \ud559\uc2b5\ub0b4\uc6a9\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc694\uad6c\uc0ac\ud56d\uacf5\ud559<\/li>\n\n\n\n<li>V\ubaa8\ub378<\/li>\n\n\n\n<li>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc2dc\ud5d8<\/li>\n\n\n\n<li>\ud615\uc0c1\uad00\ub9ac<\/li>\n\n\n\n<li>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc0dd\uba85\uc8fc\uae30<\/li>\n\n\n\n<li>\uc2dc\uc2a4\ud15c \uac1c\ubc1c \ud504\ub85c\uc138\uc2a4<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc18c\ud504\ud2b8\uc6e8\uc5b4\uacf5\ud559\uc758 \uae30\ubcf8\uac1c\ub150\uc744 \ubcf4\uc644\ud558\ub294 \ub370 \uc801\ud569\ud558\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ucc38\uace0\ub3c4\uc11c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nuclear Power Plants: Innovative Technologies for Instrumentation and Control Systems<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \ud559\uc2b5\ub0b4\uc6a9\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc6d0\uc790\ub825 \ub514\uc9c0\ud138 I&amp;C<\/li>\n\n\n\n<li>\uc6d0\uc804 \uacc4\uce21\uc81c\uc5b4 \uad6c\uc870<\/li>\n\n\n\n<li>\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc2e0\ub8b0\uc131<\/li>\n\n\n\n<li>\uc6d0\uc804 \uc0ac\uc774\ubc84\ubcf4\uc548<\/li>\n\n\n\n<li>\uc6d0\uc804 \uc790\ub3d9\ud654 \uae30\uc220<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc6d0\uc790\ub825 \ubd84\uc57c\uc758 \uc804\ubb38 \uc0ac\ub840\ub97c \ubcf4\uc644\ud560 \ub54c \ucc38\uace0\ud55c\ub2e4.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9. \uad8c\uc7a5 \ud559\uc2b5 \uc21c\uc11c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1\ub2e8\uacc4. \uae30\ub2a5\uc548\uc804 \uae30\ucd08<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uba3c\uc800 \ub2e4\uc74c \ub0b4\uc6a9\uc744 \ud559\uc2b5\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IEC 61508<\/li>\n\n\n\n<li>SIL<\/li>\n\n\n\n<li>\uae30\ub2a5\uc548\uc804 \uc0dd\uba85\uc8fc\uae30<\/li>\n\n\n\n<li>V\ubaa8\ub378<\/li>\n\n\n\n<li>RTM<\/li>\n\n\n\n<li>Verification\uacfc Validation<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd94\ucc9c\ub3c4\uc11c\ub294 <strong>The Safety Critical Systems Handbook<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2\ub2e8\uacc4. SIS \ud604\uc7a5 \uc801\uc6a9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc74c\uc73c\ub85c \ud50c\ub79c\ud2b8 \uc548\uc804\uacc4\uc7a5\uc2dc\uc2a4\ud15c\uc744 \ud559\uc2b5\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IEC 61511<\/li>\n\n\n\n<li>SIS<\/li>\n\n\n\n<li>SIF<\/li>\n\n\n\n<li>1oo2, 2oo3 \uad6c\uc870<\/li>\n\n\n\n<li>PFDavg<\/li>\n\n\n\n<li>Proof Test<\/li>\n\n\n\n<li>BPCS\uc640 SIS \ubd84\ub9ac<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd94\ucc9c\ub3c4\uc11c\ub294 <strong>Plant Hazard Analysis and Safety Instrumentation Systems<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3\ub2e8\uacc4. \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc2e0\ub8b0\uc131<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc74c \ub0b4\uc6a9\uc744 \ud559\uc2b5\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc694\uad6c\uc0ac\ud56d \uae30\ubc18 \uc2dc\ud5d8<\/li>\n\n\n\n<li>MC\/DC<\/li>\n\n\n\n<li>\uc815\uc801\ubd84\uc11d<\/li>\n\n\n\n<li>\ub3d9\uc801\uc2dc\ud5d8<\/li>\n\n\n\n<li>\ub3c5\ub9bd V&amp;V<\/li>\n\n\n\n<li>\ud615\uc0c1\uad00\ub9ac<\/li>\n\n\n\n<li>\uae30\uc900\uc120<\/li>\n\n\n\n<li>CCB<\/li>\n\n\n\n<li>\ud68c\uadc0\uc2dc\ud5d8<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd94\ucc9c\ub3c4\uc11c\ub294 <strong>Software Engineering<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4\ub2e8\uacc4. CCF\uc640 \uc0b0\uc5c5\ubcc4 \uc801\uc6a9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc74c \ub0b4\uc6a9\uc744 \ud559\uc2b5\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5<\/li>\n\n\n\n<li>\ub2e4\uc591\uc131<\/li>\n\n\n\n<li>\ub3c5\ub9bd\uc131<\/li>\n\n\n\n<li>\uc6d0\uc790\ub825 Category A<\/li>\n\n\n\n<li>\ucca0\ub3c4 SIL 4<\/li>\n\n\n\n<li>IEC 61513<\/li>\n\n\n\n<li>IEC 60880<\/li>\n\n\n\n<li>IEC 62279<\/li>\n\n\n\n<li>IEC 62340<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \ub2e8\uacc4\uc5d0\uc11c\ub294 \ud45c\uc900 \uc6d0\ubb38\uacfc \uc804\ubb38\uc790\ub8cc\ub97c \ud568\uaed8 \ud655\uc778\ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5\ub2e8\uacc4. OT \uc0ac\uc774\ubc84\ubcf4\uc548<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub9c8\uc9c0\ub9c9\uc73c\ub85c \ub2e4\uc74c \ub0b4\uc6a9\uc744 \ud559\uc2b5\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IEC 62443<\/li>\n\n\n\n<li>Defense in Depth<\/li>\n\n\n\n<li>Zone<\/li>\n\n\n\n<li>Conduit<\/li>\n\n\n\n<li>SL-T<\/li>\n\n\n\n<li>DMZ<\/li>\n\n\n\n<li>\uc6d0\uaca9\uc811\uc18d \ud1b5\uc81c<\/li>\n\n\n\n<li>Engineering Workstation \ubcf4\uc548<\/li>\n\n\n\n<li>\ubc31\uc5c5\uacfc \uc0ac\uace0\ub300\uc751<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd94\ucc9c\ub3c4\uc11c\ub294 <strong>Industrial Network Security<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">10. \ucd5c\uc885 \uc815\ub9ac<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ub514\uc9c0\ud138 I&amp;C\uc758 \uc2e0\ub8b0\uc131\uacfc \uc548\uc804\uc131\uc740 \uac1c\ubcc4 \uae30\uc220 \ud558\ub098\ub9cc\uc73c\ub85c \ud655\ubcf4\ub418\uc9c0 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc74c \ub124 \uac00\uc9c0 \ud65c\ub3d9\uc774 \uc804 \uc0dd\uba85\uc8fc\uae30\uc5d0\uc11c \ud1b5\ud569\ub418\uc5b4\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\uacb0\ud568\uc744 \uc904\uc774\ub294 V&amp;V<\/strong><br><strong>\ubcc0\uacbd\uc744 \ud1b5\uc81c\ud558\ub294 \ud615\uc0c1\uad00\ub9ac<\/strong><br><strong>\uacf5\ud1b5\uace0\uc7a5\uc744 \ucc28\ub2e8\ud558\ub294 \ub2e4\uc591\uc131<\/strong><br><strong>\uacf5\uaca9\uc744 \uc81c\ud55c\ud558\ub294 \uc2ec\uce35\ubc29\uc5b4<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">V\ubaa8\ub378\uacfc RTM\uc740 \uc694\uad6c\uc0ac\ud56d\ubd80\ud130 \uc2dc\ud5d8\uacb0\uacfc\uae4c\uc9c0\uc758 \ucd94\uc801\uc131\uc744 \ud655\ubcf4\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MC\/DC\ub294 \ubcf5\ud569\ub17c\ub9ac\uc758 \uac01 \uc870\uac74\uc774 \uacb0\uc815 \uacb0\uacfc\uc5d0 \ubbf8\uce58\ub294 \ub3c5\ub9bd\uc801\uc778 \uc601\ud5a5\uc744 \uac80\uc99d\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud615\uc0c1\uad00\ub9ac\uc640 CCB\ub294 \uc2b9\uc778\ub418\uc9c0 \uc54a\uc740 \ubcc0\uacbd\uc744 \ubc29\uc9c0\ud558\uace0 \uae30\uc900\uc120\uc758 \ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2oo3 \uad6c\uc870\ub294 \ub3c5\ub9bd\uc801\uc778 \uc6b0\ubc1c\uace0\uc7a5\uc5d0\ub294 \ud6a8\uacfc\uc801\uc774\ub2e4. \uadf8\ub7ec\ub098 \uacf5\ud1b5\uc6d0\uc778\uace0\uc7a5\uc744 \uc81c\uac70\ud558\uc9c0\ub294 \ubabb\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CCF\ub97c \uc904\uc774\uae30 \uc704\ud574\uc11c\ub294 \uae30\ub2a5\uc801, \uc2e0\ud638\uc801, \ud558\ub4dc\uc6e8\uc5b4\uc801, \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc801 \ubc0f \uad00\ub9ac\uc801 \ub2e4\uc591\uc131\uc774 \ud544\uc694\ud558\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IEC 62443 \uae30\ubc18\uc758 Zone\uacfc Conduit \uc124\uacc4\ub294 \uacf5\uaca9\uc758 \ud655\uc0b0\uc744 \uc81c\ud55c\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\ub9cc \ubcf4\uc548\uc870\uce58\uac00 \uc548\uc804\uacc4\ud1b5\uc758 \uc751\ub2f5\uc2dc\uac04, \uacb0\uc815\uc131 \ubc0f \uac00\uc6a9\uc131\uc744 \ud6fc\uc190\ud558\uc9c0 \uc54a\ub3c4\ub85d Safety\uc640 Security\ub97c \ud568\uaed8 \uac80\uc99d\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uacb0\ub860\uc801\uc73c\ub85c \ub514\uc9c0\ud138 I&amp;C\uc758 \uace0\uc2e0\ub8b0\u00b7\uace0\uc548\uc804 \uc124\uacc4\ub294 \uc694\uad6c\uc0ac\ud56d \uc815\uc758, \uc124\uacc4, \uad6c\ud604, \uc2dc\ud5d8, \ubcc0\uacbd, \uc6b4\uc804 \ubc0f \uc720\uc9c0\ubcf4\uc218 \uc804 \uacfc\uc815\uc5d0\uc11c \ud1b5\ud569\uc801\uc73c\ub85c \uc218\ud589\ub418\uc5b4\uc57c \ud55c\ub2e4.<\/p>\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\/InstrumentAndControl_SW.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"InstrumentAndControl_SW\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-d912c460-4711-4849-998f-6722df1c8269\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/InstrumentAndControl_SW.pdf\">InstrumentAndControl_SW<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/08\/InstrumentAndControl_SW.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-d912c460-4711-4849-998f-6722df1c8269\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4\uae30\uc220\uc0ac \uc2dc\ud5d8 \uad00\uc810\uc5d0\uc11c <strong>\uc138\uc774\ud504\ud2f0(Safety, \uae30\ub2a5\uc548\uc804)<\/strong>\uc640 <strong>SIL(Safety Integrity Level, \uc548\uc804\ubb34\uacb0\uc131\uc218\uc900)<\/strong> \uad00\ub828 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ud575\uc2ec \uc8fc\uc81c\ub294 \ub531 <mark><strong>4\uac00\uc9c0 \ud504\ub808\uc784\uc6cc\ud06c<\/strong><\/mark>\ub85c \uc815\uc758\ub429\ub2c8\ub2e4. [1, 2]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uc8fc\uc81c\ub4e4\uc740 \uc77c\ubc18 \uc2dc\uc2a4\ud15c\uacfc \uc548\uc804 \ud544\uc218(Safety-Critical) \uc2dc\uc2a4\ud15c\uc744 \uac00\ub974\ub294 \ud559\ubb38\uc801 \uacbd\uacc4\uc120\uc774\uc790, \uc2dc\ud5d8\uc7a5\uc5d0\uc11c \uace0\ub4dd\uc810\uc744 \ubc1b\uae30 \uc704\ud55c \ucc28\ubcc4\ud654 \ud1a0\ud53d\uc785\ub2c8\ub2e4. [3, 4]<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. SIL (\uc548\uc804\ubb34\uacb0\uc131\uc218\uc900) \ub4f1\uae09\uc758 \ud559\ubb38\uc801 \uc815\uc758<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SIL\uc740 \uc2dc\uc2a4\ud15c\uc758 \uc548\uc804 \uae30\ub2a5\uc774 \uace0\uc7a5 \ub098\uc9c0 \uc54a\uace0 <strong>\ubaa9\ud45c\ud55c \uc704\ud5d8 \uac10\uc18c \uc694\uc18c\ub97c \uc62c\ubc14\ub974\uac8c \uc218\ud589\ud560 \ud655\ub960<\/strong>\uc744 \uc815\ub7c9\ud654\ud55c \uc9c0\ud45c\uc785\ub2c8\ub2e4. [5, 6]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\ud575\uc2ec \uba54\ucee4\ub2c8\uc998<\/strong>: SIL\uc740 1\ubd80\ud130 4\ub4f1\uae09\uae4c\uc9c0 \uc874\uc7ac\ud558\uba70, \uc22b\uc790\uac00 \ub192\uc744\uc218\ub85d \uc548\uc804\uc131\uc774 \uadf9\ub300\ud654\ub41c \uc2dc\uc2a4\ud15c\uc785\ub2c8\ub2e4. [1, 5]<\/li>\n\n\n\n<li><strong>\ucca0\ub3c4 \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \ubaa9\ud45c<\/strong>: \uc5f4\ucc28 \ucda9\ub3cc\uc744 \ubc29\uc9c0\ud558\ub294 <a href=\"https:\/\/learn.adacore.com\/booklets\/adacore-technologies-for-railway-software\/chapters\/cenelec.html\">ATP(\uc5f4\ucc28\uc790\ub3d9\ubc29\ud638)\ub098 \uc5f0\ub3d9\uc7a5\uce58<\/a> \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub294 \uc2dc\uac04\ub2f9 \uce58\uba85\uc801 \uace0\uc7a5 \ud655\ub960\uc774 <strong>$10^{-9}$\uc5d0\uc11c $10^{-8}$ \ubbf8\ub9cc<\/strong>\uc774\uc5b4\uc57c \ud558\ub294 <strong>SIL 4 \ub4f1\uae09<\/strong>\uc744 \ub9cc\uc871\ud558\ub3c4\ub85d \uac15\uc81c\ub429\ub2c8\ub2e4. [3, 4]<\/li>\n\n\n\n<li><strong>\uc2dc\ud5d8\uc7a5 \ud3ec\uc778\ud2b8<\/strong>: \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub294 \ud558\ub4dc\uc6e8\uc5b4\uc640 \ub2ec\ub9ac \ub178\ud6c4\ud654\ub85c \uc778\ud55c \ubb34\uc791\uc704 \uace0\uc7a5\uc774 \uc5c6\uace0, \uc624\uc9c1 \uc124\uacc4 \uc5d0\ub7ec\uc778 <strong>&#8216;\uccb4\uacc4\uc801 \uace0\uc7a5(Systematic Fault)&#8217;<\/strong>\ub9cc \uc874\uc7ac\ud558\ubbc0\ub85c \uac1c\ubc1c \ud504\ub85c\uc138\uc2a4 \uc790\uccb4\uc758 \ubb34\uacb0\uc131\uc774 \ub4f1\uae09\uc744 \uacb0\uc815\ud568\uc744 \uba85\uc2dc\ud574\uc57c \ud569\ub2c8\ub2e4. [3, 7]<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. V-\ubaa8\ub378(V-Model)\uacfc \ucd94\uc801\uc131(Traceability) \uad00\ub9ac<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SIL \ub4f1\uae09 \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \uac1c\ubc1c\ud560 \ub54c \uac00\uc7a5 \uae30\ubcf8\uc774 \ub418\ub294 \uac1c\ubc1c \uc8fc\uae30\ub85c, \uc124\uacc4 \ub2e8\uacc4\uc640 \ud14c\uc2a4\ud2b8 \ub2e8\uacc4\ub97c 1:1\ub85c \ub9e4\ud551\ud558\uc5ec \ube48\ud2c8\uc5c6\ub294 \uac80\uc99d\uc744 \uc218\ud589\ud558\ub294 \ubaa8\ub378\uc785\ub2c8\ub2e4. [2, 8]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc0c1\ud638 \ub3c5\ub9bd\uc131 \ud3c9\uac00<\/strong>: \uac1c\ubc1c\uc744 \uc218\ud589\ud558\ub294 \uc870\uc9c1(\uc778\uac04)\uc758 \uc778\uc9c0\uc801 \uc624\ub958\ub97c \ucc28\ub2e8\ud558\uae30 \uc704\ud574, \uc124\uacc4\uc790\uc640 \uac80\uc99d\uc790(V&amp;V)\uc758 <strong>\uc5ed\ud560\uc744 \ud559\ubb38\uc801\uc73c\ub85c \uc0c1\ud638 \ub3c5\ub9bd \ubd84\ub9ac<\/strong>\ud558\uc5ec \uac1c\ubc1c \uacf5\uc815\uc744 \uc218\ud589\ud569\ub2c8\ub2e4. [9, 10]<\/li>\n\n\n\n<li><strong>\uc591\ubc29\ud5a5 \ucd94\uc801\uc131<\/strong>: \uc0c1\uc704 \uc694\uad6c\uc0ac\ud56d \ubb38\uc11c\uc758 \ubb38\uc7a5 \ud558\ub098\uac00 \uc2e4\uc81c \uc18c\uc2a4\ucf54\ub4dc\uc758 \uc5b4\ub5a4 \ud568\uc218\uc640 \ub9e4\ud551\ub418\ub294\uc9c0, \uadf8\ub9ac\uace0 \uadf8 \ud568\uc218\uac00 \uc5b4\ub5a4 \ub2e8\uc704 \ud14c\uc2a4\ud2b8\ub97c \ud1b5\ud574 \uac80\uc99d\ub418\uc5c8\ub294\uc9c0 <strong>\ucd94\uc801 \ub9e4\ud2b8\ub9ad\uc2a4(Traceability Matrix)<\/strong>\ub97c \ud1b5\ud574 \uc815\ub7c9\uc801\uc73c\ub85c \uc785\uc99d\ud574\uc57c \ud569\ub2c8\ub2e4. [8, 11, 12]<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \ubc29\uc5b4\uc801 \uc124\uacc4 \uae30\ubc95: \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ub2e4\uc911\ud654 (Fault-Tolerant)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc18c\ud504\ud2b8\uc6e8\uc5b4 \ub0b4\ubd80\uc5d0 \uc794\uc874\ud558\ub294 \uc608\uc0c1\uce58 \ubabb\ud55c \uacb0\ud568(Bug)\uc774 \ubc1c\uc0dd\ud558\ub354\ub77c\ub3c4 \uc2dc\uc2a4\ud15c \uc804\uccb4\uac00 \uba48\ucd94\uac70\ub098 \uc704\ud5d8 \uc0c1\ud0dc\uc5d0 \ube60\uc9c0\uc9c0 \uc54a\ub3c4\ub85d \uac15\uc81c\ud558\ub294 \uc544\ud0a4\ud14d\ucc98 \uc774\ub860\uc785\ub2c8\ub2e4. [3]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>N-\ubc84\uc804 \ud504\ub85c\uadf8\ub798\ubc0d (N-Version Programming)<\/strong>: \ub3d9\uc77c\ud55c \uae30\ub2a5 \uc694\uad6c\uc11c(Spec)\ub97c \uae30\ubc18\uc73c\ub85c, <strong>\uc11c\ub85c \ub2e4\ub978 \ud300\uc774 \uac01\uae30 \ub2e4\ub978 \uac1c\ubc1c \uc5b8\uc5b4(\uc608: C, Ada \ub4f1)\uc640 \uc54c\uace0\ub9ac\uc998\uc73c\ub85c \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \ub3c5\ub9bd \uac1c\ubc1c<\/strong>\ud569\ub2c8\ub2e4. \uc81c\uc5b4\uae30 \uad6c\ub3d9 \uc2dc \uc774 \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub4e4\uc758 \uc5f0\uc0b0 \uacb0\uacfc\ub97c <a href=\"https:\/\/en.wikipedia.org\/wiki\/MISRA_C\">\ub2e4\uc218\uacb0(Voting)\ub85c \ud310\uc815<\/a>\ud558\uc5ec \ucd5c\uc885 \uc81c\uc5b4 \uba85\ub839\uc744 \ud558\ub4dc\uc6e8\uc5b4\uc5d0 \ud558\ub2ec\ud568\uc73c\ub85c\uc368 \ub2e8\uc77c \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc758 \uacb0\ud568\uc744 \uc0c1\uc1c4\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ud398\uc77c \uc138\uc774\ud504(Fail-Safe) \ub17c\ub9ac<\/strong>: \uc18c\ud504\ud2b8\uc6e8\uc5b4\uc5d0 \uc5d0\ub7ec\uac00 \uac10\uc9c0\ub418\ub294 \uc989\uc2dc \uc2dc\uc2a4\ud15c\uc744 \uac00\uc7a5 \uc548\uc804\ud55c \uc0c1\ud0dc(\ucca0\ub3c4\ub294 \uc5f4\ucc28 \uc989\uc2dc \uc815\uc9c0, \uc6d0\uc790\ub825\uc740 \uc6d0\uc790\ub85c \uc2a4\ud06c\ub78c\/\uc815\uc9c0)\ub85c \uc720\ub3c4\ud558\ub294 \uc81c\uc5b4 \uc544\ud0a4\ud14d\ucc98\ub97c \ud504\ub85c\uadf8\ub798\ubc0d \uc218\uc900\uc5d0\uc11c \ubcf4\uc7a5\ud569\ub2c8\ub2e4. [1, 4]<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \ucf54\ub4dc \ubb34\uacb0\uc131 \uac80\uc99d \uae30\uc220: \uc815\uc801 \ubc0f \ub3d9\uc801 \ubd84\uc11d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0ac\ub78c\uc774 \ucf54\ub4dc\ub97c \uc9c1\uc811 \uc791\uc131\ud558\uba74\uc11c \ubc1c\uc0dd\ud558\ub294 \ub17c\ub9ac\uc801 \ube48\ud2c8\uc744 \ucef4\ud4e8\ud130 \uc790\ub3d9\ud654 \ub3c4\uad6c\ub97c \ud1b5\ud574 \uc218\ud559\uc801\u00b7\uacbd\ud5d8\uc801\uc73c\ub85c \ucc3e\uc544\ub0b4\ub294 \uac80\uc99d \uae30\uc220\uc785\ub2c8\ub2e4. [13]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc815\uc801 \ubd84\uc11d (Static Analysis)<\/strong>: \ud504\ub85c\uadf8\ub7a8\uc744 \uc2e4\ud589\ud558\uc9c0 \uc54a\uace0 \ucf54\ub4dc \uc11c\uc220 \uc790\uccb4\ub97c \uc2a4\uce94\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. \uba54\ubaa8\ub9ac \ub204\uc218\ub97c \uc720\ubc1c\ud558\ub294 \ud3ec\uc778\ud130\ub098 \ub3d9\uc801 \ud560\ub2f9\uc744 \uc81c\ud55c\ud558\ub294 MISRA-C \ub4f1 \uc548\uc804 \ucf54\ub529 \ud45c\uc900 \uaddc\uce59\uc744 \uc900\uc218\ud588\ub294\uc9c0 \uc790\ub3d9\ud654 \uac80\uc0ac\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ub3d9\uc801 \ubd84\uc11d (Dynamic Analysis)<\/strong>: \ucf54\ub4dc\ub97c \uc2e4\uc81c \ud0c0\uae43 \uc81c\uc5b4\uae30(MCU\/PLC) \ud658\uacbd\uc5d0\uc11c \uad6c\ub3d9\ud558\uba70 \uc785\ub825\uac12\uc744 \uc8fc\uc5b4 \uc608\uc678 \ub3d9\uc791\uc744 \ud655\uc778\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. SIL 4 \ub4f1\uae09\uc5d0\uc11c\ub294 \uc18c\uc2a4\ucf54\ub4dc\uc758 \ubaa8\ub4e0 \uc870\uac74\uacfc \ubd84\uae30\ubb38\uc774 \ucd5c\uc18c \ud55c \ubc88 \uc774\uc0c1 \uc2e4\ud589\ub418\uc5c8\ub294\uc9c0 \ud655\uc778\ud558\ub294 <strong>MC\/DC(\uc218\uc815\ub41c \uc870\uac74\/\uacb0\uc815 \ucee4\ubc84\ub9ac\uc9c0) 100% \ub9cc\uc871<\/strong>\uc744 \ud544\uc218 \uc694\uac74\uc73c\ub85c \ub0b4\uc138\uc6c1\ub2c8\ub2e4. [1, 11, 13, 14, 15]<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udca1 \uae30\uc220\uc0ac \uc11c\ube0c\ub178\ud2b8 \uad6c\uc131 \uc804\ub7b5<\/strong><br>\uc774 \uc8fc\uc81c\ub4e4\uc740 \ub2e8\ub3c5 \ubb38\uc81c\ub85c \ucd9c\uc81c\ub418\uae30\ubcf4\ub2e4\ub294 <strong>&#8220;\uc81c\uc5b4 \uc2dc\uc2a4\ud15c\uc758 \uc2e0\ub8b0\uc131 \ud5a5\uc0c1\uc744 \uc704\ud55c \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uae30\ub2a5\uc548\uc804 \ud655\ubcf4 \ubc29\uc548&#8221;<\/strong>\uacfc \uac19\uc740 \ud615\ud0dc\ub85c \uc790\uc8fc \ucd9c\uc81c\ub429\ub2c8\ub2e4. \ub530\ub77c\uc11c <code>1. SIL \uc815\uc758<\/code> -&gt; <code>2. V-\ubaa8\ub378 \uacf5\uc815<\/code> -&gt; <code>3. \ub2e4\uc911\ud654 \ubc0f \uc815\uc801\/\ub3d9\uc801 \uac80\uc99d \uae30\ubc95<\/code> \uc21c\uc73c\ub85c \ud55c \uc138\ud2b8\uc758 \ub2f5\uc548 \ud3ec\ub9f7\uc744 \uc720\uae30\uc801\uc73c\ub85c \uc5ee\uc5b4 \uc815\ub9ac\ud574 \ub450\ub294 \uac83\uc774 \uac00\uc7a5 \ud6a8\uc728\uc801\uc785\ub2c8\ub2e4. [1, 2, 16]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 4\uac00\uc9c0 \uce74\ud14c\uace0\ub9ac \uc911 <strong>\uac00\uc7a5 \uace0\ub4dd\uc810 \ubb34\uae30\uac00 \ub420 \uc218 \uc788\ub294 &#8216;MC\/DC \ucee4\ubc84\ub9ac\uc9c0 \uac1c\ub150&#8217;\uc774\ub098 &#8216;N-\ubc84\uc804 \ud504\ub85c\uadf8\ub798\ubc0d \uc544\ud0a4\ud14d\ucc98 \ube14\ub85d\ub3c4&#8217;<\/strong> \uc911 \uc5b4\ub5a4 \ubd80\ubd84\uc744 \uba3c\uc800 \uac00\uc2dc\uc801\uc778 \uadf8\ub9bc\uacfc \ud568\uaed8 \uc0c1\uc138\ud788 \uc11c\uc220\ud574 \ubcfc\uae4c\uc694?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[1] <a href=\"https:\/\/plcprogramming.io\/blog\/what-is-sil-safety-integrity-level\">https:\/\/plcprogramming.io<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[2] <a href=\"https:\/\/www.linkedin.com\/pulse\/what-sil-why-matters-railway-systems-ayan-bhattacharjee-ky2pc\">https:\/\/www.linkedin.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[3] <a href=\"https:\/\/www.eke-electronics.com\/sil-safety-levels\/\">https:\/\/www.eke-electronics.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[4] <a href=\"https:\/\/www.alphainnovations.eu\/en\/news\/understanding-sil4-why-highest-safety-integrity-level-critical-railway-safety\">https:\/\/www.alphainnovations.eu<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[5] <a href=\"https:\/\/www.sciencedirect.com\/topics\/engineering\/safety-integrity-level\">https:\/\/www.sciencedirect.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[6] <a href=\"https:\/\/safetycatch.in\/what-is-safety-integrity-level-sil-complete-guide-2025\/\">https:\/\/safetycatch.in<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[7] <a href=\"https:\/\/www.spri.kr\/posts\/view\/22636?code=data_all&amp;study_type=research\">https:\/\/www.spri.kr<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[8] <a href=\"https:\/\/blog.naver.com\/suresofttech\/223524919446\">https:\/\/blog.naver.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[9] <a href=\"https:\/\/railway-news.com\/safety-integrity-levels-sil-explored\/\">https:\/\/railway-news.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[10] <a href=\"https:\/\/www.leedeo.es\/l\/en-cenelec-en-50128\/\">https:\/\/www.leedeo.es<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[11] <a href=\"https:\/\/www.parasoft.com\/white-paper\/satisfying-en-50128-requirements-with-parasoft\/\">https:\/\/www.parasoft.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[12] <a href=\"https:\/\/www.ors-consulting.com\/what-is-sil-safety-integrity-level\">https:\/\/www.ors-consulting.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[13] <a href=\"https:\/\/www.etnews.com\/20241108000097\">https:\/\/www.etnews.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[14] <a href=\"https:\/\/www.perforce.com\/blog\/qac\/what-is-en-50128\">https:\/\/www.perforce.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[15] <a href=\"https:\/\/zdnet.co.kr\/view\/?no=20241102231457\">https:\/\/zdnet.co.kr<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[16] <a href=\"https:\/\/www.qa-systems.com\/solutions\/en-50128-50657\/\">https:\/\/www.qa-systems.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">https:\/\/conding-note.tistory.com\/213<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/rupijun.tistory.com\/entry\/V-Model-VV-%EB%AA%A8%EB%8D%B8-%EC%9A%94%EA%B5%AC%EC%82%AC%ED%95%AD-%EA%B8%B0%EB%B0%98-%EA%B2%80%EC%A6%9D%C2%B7%ED%99%95%EC%9D%B8-%EC%B2%B4%EA%B3%84\">https:\/\/rupijun.tistory.com\/entry\/V-Model-VV-%EB%AA%A8%EB%8D%B8-%EC%9A%94%EA%B5%AC%EC%82%AC%ED%95%AD-%EA%B8%B0%EB%B0%98-%EA%B2%80%EC%A6%9D%C2%B7%ED%99%95%EC%9D%B8-%EC%B2%B4%EA%B3%84<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/wikidocs.net\/book\/20530\">https:\/\/wikidocs.net\/book\/20530<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/gangdonggil.tistory.com\/764\">https:\/\/gangdonggil.tistory.com\/764<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ub514\uc9c0\ud138 I&amp;C \uc2dc\uc2a4\ud15c\uc758 \uc2e0\ub8b0\uc131\u00b7\uc548\uc804\uc131 \ud655\ubcf4 \uae30\uc220 1. \ud575\uc2ec \uac1c\ub150 \ub514\uc9c0\ud138 I&amp;C(Instrumentation and Control)\ub294 \uc13c\uc11c \uc785\ub825\uc744 PLC, DCS, \uc548\uc804 PLC \ub610\ub294 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