1、KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2006 9 30 http:/www.kats.go.krKS C IEC 61250 KS C IEC 61250： 2006 (2011 )C IEC 61250： 2006 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： : 2006 9 30 : 2011 12 28 2011-0637 ： ： ( 02-509-72703) (http:/www.kats.go.kr). 10 5 , . ICS 27.120.20 KS C IEC 61250： 2006
2、(2011 ) Nuclear reactors Instrumentation and control systems important for safety Detection of leakage in coolant systems 1994 1 IEC 61250 Nuclear reactors Instrumentation and control systems important for safety Detection of leakage in coolant systems , . 1. . , (allowable leakage) (abnormal leakag
3、e) . (leak-before-break) (warning) . (spurious alarms) . , (data display) . , (trends) . , . (reactor coolant & associated system) (leakage detection system) , , , , . 2. . , , . KS C IEC 60911： 1987 KS C IEC 60980： 1989 KS C IEC 61225： 2006 IEC Multilingual dictionary： 1992 Electricity, Electronics
4、 and Telecommunications IEC 910： 1998 Containment monitoring instrumentation for early detection of developing deviations from normal operation in light water reactors IAEA Safety Guide 50 SG D9： 1985 Design aspects of radiation protection in nuclear power plants IAEA Safety Guide 50 SG D12： 1985 De
5、sign of the reactor containment systems in nuclear power plants IAEA Safety Guide 50 SG D13： 1986 Reactor coolant and associated systems in nuclear power plants ISA S67.03： 1982 Standard for light water reactor coolant pressure boundary leak detection C IEC 61250： 2006 2 3. . 3.1 (accessible area) (
6、routine function) (health physics procedure) 3.2 (accuracy) (indicated value) (true value) 3.3 (boiling water reactor) 3.4 (calibration) (series of devices) . 3.5 (coolant) (reactor pressure boundary) 3.6 a) b) c) d) e) f) ( .) 3.7 (leak) , 3.8 (leakage) a) b) ( , , .) c) (identified leakage) 4.1 d)
7、 (leakage rate) (20 ) (100 kPa) SI e) (unidentified leakage) 4.1 3.9 (leakage monitoring instrument system) 3.10 (pressurized water reactor) , 3.11 (reactor containment) ( ) 3.12 (reactor coolant associated system) , , , a) b) , C IEC 61250： 2006 3 ( ) (heat sink) (intermediate cooling loop) 1) 2) (
8、normally closed) 3) (direct cycle) . 3.13 (sensitibity) (IEC ) 3.14 (time constant) 1/e = 0.367 9 (IEC ) 3.15 (time response of instrumentation) 4. , , , (leakage flow path) . (through-wall cracks) (flaws) . , (non-isolating portion) . , (condensing or trapping means) . 4.1 (unidentified leakage) (i
9、dentified leakage) . . (leakage sources) . a) 1) (collection systems) ( (pump seals) (valve packing) ) 2)* , * 2) (component cooling water) . b) c) (tube sheet) (closed systems) (passive barriers) (isolation valves) (active barriers) ( , .) 4.2 C IEC 61250： 2006 4 (single definitive checklist) . , ,
10、 , . , (identified source) . . a) (stem packing), (pump drive shaft seal), (gland seal) (dynamic seals) b) , (equipment gasket), (seat seal) (static seals) c) , (rupture disk), (pressure relief systems) d) (lines), (bellows), (diaphragms), (Bourdon tubes), (thermometer well), (interface boundaries)
11、5. . . 5.1 , . (sump) . 6. . 5.2 , , (LBB) . 4 L/min . . 5.3 , . . , . 5.4 , , . , (leakage collection & measurement systems) . (uncollected leakage) (unidentified leakage monitoring system) 5.2 . , . a) b) 5.2 5.5 4.2.(d) , . 5.6 . 5.6.1 C IEC 61250： 2006 5 . 5.6.2 (sump monitoring system) 1 (other
12、 diverse monitoring channels) , (KS C IEC 60980 ). , . 5.7 3 2 . . KS C IEC 61225 . , . (KS C IEC 61225 ). 5.8 , . a) ( , , ) b) , , c) , d) (KS C IEC 60980 ) e) f) 6. . , . 1 , , . 6.1 . . a) (stem packing gland) (identified equipment leakage) (closed equipment) , (average background) . b) (6.3 ) (
13、unidentified le akage) . (5.2 ) . , . , . (sump level change) (sump discharge Flow) . C IEC 61250： 2006 6 , ( ) . 6.2 IAEA 50SG1D9 . . . 6.2.1 . (sampling system) , , , (ambient radiation background), . . (extensive current info rmation) . . (plant process computer) . 6.2.2 , (mass balance), (16 N )
14、 (off gas) . . . , , . 6.3 (drain fan) . (condensate run-off) . 6.4 , , . , . . . KS C IEC 60911 . . a) b) c) 6.5 C IEC 61250： 2006 7 , . . (quantitative uncertainty) . . , (air flows) . . . (normal lea kage rate) , (baseline) . 6.6 (air-borne acoustic signals) , . (random noise) (metal-borne acoustic waves) , . (acoustic noise frequency bands) , . . (threshold setpoint) / . . 6.7 . a) b) c) d) e) (heat source or collector) f) (time constant) (multipoint) (equipment room) . (cooling air duct), (seal leakoff line), ( (sheath) ) , . . 6.8 . . (small leakag
