1、 KSKSKSKS KSKSKSK KSKSKS KSKSK KSKS KSK KS KS C IEC 62340 (CCF) KS C IEC 62340:2012 2012 12 12 http:/www.kats.go.krKS C IEC 62340:2012 : ( ) ( ) () ( ) : () () ( ) () () () ( ) () () : (http:/www.standard.go.kr) ： ：2012 12 12 2012-0698 ： ：() ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS C IEC 6
2、2340:2012 i ii . iii 1 1 2 2 3 .2 4 7 5 CCF .7 5.1 .7 5.2 CCF 7 5.3 CCF .8 5.4 CCF 8 5.5 CCF .9 6 10 6.1 I&C 10 6.2 .10 6.3 CCF .11 7 .11 7.1 11 7.2 .12 7.3 .12 7.4 13 7.5 13 7.6 14 7.7 .14 7.8 14 8 15 9 .15 A( ) KS X IEC 60880 16 KS C IEC 62340:2012 ii . . , , . , , . KS C IEC 62340:2012 iii 2007 1
3、 IEC 62340, Nuclear power plants Instrumentation and control systems important to safety Requirements for coping with common cause failure(CCF) . KS C IEC 62340:2012 (CCF) Nuclear power plants Instrumentation and control systems important to safety Requirements for coping with common cause failure(C
4、CF) 1 , . 1) . . a) A (Common Cause Failure, CCF) b) IEC SC 45A ( KS C IEC 61226, KS C IEC 61513, IEC 60880 KS C IEC 60709) CCF CCF c) CCF . , , . . CCF . CCF .2)a) A b) ： B A c) CCF . 1) . 2) . KS C IEC 62340:2012 2 CCF . a) b) (： ) c) . , 1) (： , ) 2) (： ) 3) . 4) , 2 . . ( ) . KS C IEC 60671, KS
5、C IEC 60709, KS C IEC 60780, KS C IEC 60980, KS C IEC 61000 4( ), (EMC) 4： KS C IEC 61226, KS C IEC 61513, IEC 60880, Nuclear power plants Instrumentation and control systems important to safety Software aspects for computer-based systems performing category A functions IAEA Safety Guide NS-G-1.3, I
6、nstrumentation and control systems important to safety in Nuclear Power Plants IAEA Safety Guide SG-D11, General design safety principles for nuclear power plants IAEA Safety Glossary Ed.2.0, 2006 3 KS C IEC 61513 KS C IEC 61226 . 3.1 (Common Cause Failure, CCF) IAEA Safety Glossary, Ed. 2.0, 2006 1
7、 , , , , , . 2 . KS C IEC 62340:2012 3 3.2 (defence-in-depth) . IAEA Safety Glossary, Ed. 2.0, 2006 . 3.3 (diversity) . CCF . . IEC 60880, 3.14 “ ” 3.4 (fail-safe design) . 3.5 (failure) , . IAEA Safety Glossary, Ed. 2.0, 2006 1 , , . 2 “ ” “ ” 3.6 (fault) , KS C IEC 61513, 3.22 1 (： ) (： ) . 2 ( )
8、( , ) . 3 “ ” “ ” 3.7 (fault avoidance) IEC 61508 4, 3.6.2, KS C IEC 62340:2012 4 3.8 (fault tolerance) , IEC 60880, 3.18 3.9 (functional diversity) ( , ). IEC 60880, 3.19 “ ” 3.10 (functional validation) 1 . . KS C IEC 61513, 3.24 3.11 ( ) human error (mistake) IEC 60880, 3.21 3.12 (independent I&C
9、 system) . a) . b) . c) (： , EMI) . IAEA Safety Glossary, Ed. 2.0, 2006 “ ” , , . 3.13 (input signal transient) . “ ” . KS C IEC 62340:2012 5 3.14 (latent fault) , , ( ). , CCF . 3.15 (random fault) . ( ) . (： ), . 3.16 (signal trajectory) , , IEC 60880, 3.33 3.17 (single failure) IAEA Safety Glossa
10、ry, Ed. 2.0, 2006 3.18 (single-failure criterion) ( ) IAEA Safety Glossary, Ed. 2.0, 2006 “ ”, “ ” 3.19 (software failure) KS C IEC 61513, 3.57 1 . . . 2 “ , , ” KS C IEC 62340:2012 6 3.20 (software fault) KS C IEC 61513, 3.58 “ ” 3.21 (specification) , , , IEC 60880, 3.39 3.22 (system validation) (
11、 , , , ) . IEC 60880, 3.42 3.23 (systematic failure) . , , . KS C IEC 61513, 3.62 (common cause failure) , , . 3.24 (systematic fault) , . 1 , . 2 . 3.25 (validation) IAEA Safety Glossary, Ed.2.0, 2006 “ ” “ ” KS C IEC 62340:2012 7 3.26 (verification) , IAEA Safety Glossary, Ed.2.0, 2006 4 CCF Commo
12、n Cause Failure( ) DBA Design Basis Accident( )3)DBE Design Basis Event( ) EMI Electro-Magnetic Interference( ) FAT Factory Acceptance Test( ) IAEA International Atomic Energy Agency( ) I&C Instrumentation and Control( ) NPP Nuclear Power Plant( ) PIE Postulated Initiating Event( ) SAT Site Acceptan
13、ce Test( ) 5 CCF 5.1 CCF , 6. 9. . 5.2 CCF A , (voting mechanism) . . (CCF) . , CCF . . . I&C I&C . . (： EMI) CCF ( 3) DBA DBE KS C IEC 61226 . KS C IEC 62340:2012 8 , , ) . . , . . 5.3 CCF (hard-wired) , . . ( 7.8 ) . . . CCF . . . ： CCF . CCF . , . CCF , . . . 5.4 CCF 5.2 CCF CCF . a) . b) ( ) . C
14、CF . CCF I&C . KS C IEC 62340:2012 9 , A CCF . , , CCF . CCF . CCF , . a) . I&C , . (3.25 ). b) (： , , ) c) I&C . d) . e) , . CCF (7., 8. 9. ). SC 45A (2. ). 5.5 CCF CCF A I&C (architecture) . , . 1 CCF . CCF , A . (3.12 ) . (5.3 ). (： , ) . . KS C IEC 62340:2012 10 . (3.16 ). (6., 7. 9. ) . 6 6.1 I&C . I&C DBA DBE , . DBE .4)6.1.1 . a) CCF , DBE .
