1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS C IEC 61888 KS C IEC 61888:2012 2012 11 23 http:/www.kats.go.krKS C IEC 61888:2012 : ( ) ( ) () ( ) : () () ( ) () () () ( ) () () : (http:/www.standard.go.kr) ： ：2006 9 30 ：2012 11 23 2012-0226 ： ：() ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS C I
2、EC 61888:2012 i ii . iii 1 1 2 1 3 .1 4 3 5 .4 5.1 .4 5.2 4 5.3 (LSSS) 4 5.4 8 5.5 8 5.6 .8 6 8 7 .9 7.1 .9 7.2 .9 A( ) 12 14 1 .10 2 11 A.1 13 KS C IEC 61888:2012 ii . , , . , , . KS C IEC 61888:2012 iii 2002 IEC 61888, Nuclear power plants Instrumentation important to safety Determination and main
3、tenance of trip setpoints . KS C IEC 61888:2012 Nuclear power plants Instrumentation important to safetyDetermination and maintenance of trip setpoints 1 (3. ) . 2 . . ( ) . KS C IEC 60050 394, 394： KS C IEC 60671, KS C IEC 61513, IAEA NS-R-1： 2000, Safety of nuclear power plants： Design 3 , . KS C
4、IEC 60050 394 . 3.1 (allowable value) , . 3.2 (analytical limit) . . KS C IEC 61888:2012 2 3.3 (as found) , ( ) 3.4 (as left) (final setpoint device) 3.5 (drift) , 3.6 (error) 3.7 (final setpoint device) (process voting logic) , , . 3.8 (foldover) - 3.9 (independent uncertainty) 3.10 (instrument cha
5、nnel) 3.11 (instrument channel range) , . . 3.12 (limiting safety system setting： LSSS) 3.13 (nuclear safety system instrumentation) KS C IEC 61888:2012 3 3.14 (primary element) 3.15 (random) 3.16 (reference accuracy) 3.17 (safety limit) 3.18 (safety system) (anticipated operational occurrences) 3.1
6、9 (saturation) 3.20 (sensor) , 3.21 (test interval) , , , , 3.22 (trip setpoint) 3.23 (channel uncertainty) . (confidence) . 4 KS C IEC 61888:2012 4 SRSS (Square-Root-Sum-of-Squares) CU (Channel Uncertainty) AL (Analytical Limit) TS (Trip Setpoint) LSSS (Limiting Safety System Setting) 5 . 1 , . . ,
7、 , , , 5.1 5.4.2 . . (term) . , , . 5.1 . . . . , . (departure from the nucleate boiling ratio, DNBR) . 5.2 . a) b) (design-basis events) 3.17 . . ( , , ) . . , . . . 5.3 (LSSS) KS C IEC 61888:2012 5 LSSS . (technical specification) LSSS . 1 LSSS . 5.3.1 5.3.3 . 5.3.1 . , , , , . . , . 1 . A , 5.3.2
8、 . , . . B LSSS (5.3.4 ) . C LSSS , . D . E . ( .) b) ( ) . F i) . 2 . , . . ( . .) a) 1) 2) 3) b) 1) a) ( ) b) c) d) e) (foldover) f) 2) 3) KS C IEC 61888:2012 6 4) 5) 6) 7) ( ) 8) 9) 10) 11) 12) 13) c) . . d) (ageing) . , . . ( ). 1) (temperature effects) (profile) . , . 2) (radiation effects) . (
9、 ) . 3) / (seismic/vibratory effects) . 4) (confinement enclosure) e) (process-dependent effects) . ( .), (fluid stratification) , , . 2 . f) (calculation effects) . ( .), (power) (calorimetric) . g) (dynamic effects) . . h) (bias) . (decentration) . ( , ) ( ) , ( KS C IEC 61888:2012 7 ). i) (safety
10、 margin) E ( ). (periodic check) . 5.3.2 SRSS (term) . “a” “b” . CU (a2 b2)1/2 c “a” “b” . “c” . a ( ) . . . . , . 5.4 . . . “ ” . 5.3.3 . TS AL CU( ) TS AL CU( ) 5.3.1 i) . 5.3.4 , . . ( 1 B ) ( ). 5.3.1 a) 5.3.1 b) 5.3.1 c) KS C IEC 61888:2012 8 , , . (surveillance) . 5.4 (SRSS) . SRSS . 5.4.1 SRS
11、S , SRSS . (a) (b) SRSS , (c) . c (a2 b2)1/2 5.4.2 , . , ( ) . ( a, 0) ( b, b) , ( a b, b) . 5.5 . , . , (configuration controls) . 5.6 ( ) . ( ) . 6 ( , , , , ) . a) . . 1) , , , 2) 3) 4) (SRSS ) b) , . KS C IEC 61888:2012 9 1) 2) 3) 4) 5) 6) , , 7) (calibration bias values) 8) , , (elevation diffe
12、rence) c) , . 7 5. . (2. ). 7.1 . ( ) . KS C IEC 60671 . . . , . 1 E . , . , ( , ) . , . . , . , , . . a) b) ( ) c) ( ) d) e) ( ) f) 7.2 , , KS C IEC 61888:2012 10 . A 5.3.1 B 5.3.4 C D E 5.3.1 F 5.3.1 . , . 1 KS C IEC 61888:2012 11 2 KS C IEC 61888:2012 12 A ( ) A.1 (setpoint) (reactor high pressure) . . , ,
