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{{#Wiki_filter:REPORT OF TYPE B AND C LEAK RATES D.C.COOK PLANT UNIT 2 | {{#Wiki_filter:REPORT OF TYPE B AND C LEAK RATES D. C. COOK PLANT UNIT 2 1984 MDTRO INNEf M NPY. | ||
( | |||
8+<0<~ | |||
8gg0gq0030 050003i6 PDR *DOCY PDR P, | |||
0 j | |||
TABLE OF CONTENTS SECTION TITLE PAGE 1.1 | |||
==SUMMARY== | ==SUMMARY== | ||
OF RESULTS TABLES 2.1 TABLE 1 2.2 TABLE 2 2.3 TABLE 3 | OF RESULTS 2.0 TABLES 2.1 TABLE 1 2-3 2.2 TABLE 2 2.3 TABLE 3 | ||
1..0 | |||
==SUMMARY== | ==SUMMARY== | ||
OF RESULTS As indicated in the accommanying ILRT report, Type A leakage test results do not indicate a failure to meet the containment overall leakage acceptance criteria.Guideline Type B&C leakages were exceeded, however, as detailed in the following. | OF RESULTS As indicated in the accommanying ILRT report, Type A leakage test results do not indicate a failure to meet the containment overall leakage acceptance criteria. Guideline Type B&C leakages were exceeded, however, as detailed in the following. | ||
Types B&C Leak Rate Testing (**12 THP'4030 STP.203)was performed on Unit 2 between March 12, 1984 and June 29, 1984.Table Ol shows the valves that exceeded their respective guideline leakages.Table 52 gives a brief summary of the repairs made to leaking valves.Table e3 shows a brief history of these valves as tested during previous surveillances. | Types B & C Leak Rate Testing (**12 THP'4030 STP.203) was performed on Unit 2 between March 12, 1984 and June 29, 1984. Table Ol shows the valves that exceeded their respective guideline leakages. Table 52 gives a brief summary of the repairs made to leaking valves. Table e3 shows a brief history of these valves as tested during previous surveillances. | ||
While testing Zone 4 piping pentrations, several penetrations were found to be leaking.These penetrations were CPN-4, CPN-23, CPN-40,&CPN-44.CPN-4 was repaired by ,welding a hole in the bellows.CPN-23, CPN-40,&CPN-44 also had holes in the bellows but.were not repaired per AEPSC review of the plant FSAR determining that bellows on containment, penetrations are not needed to maintain the leak-tight integrity of containment. | While testing Zone 4 piping pentrations, several penetrations were found to be leaking. These penetrations were CPN-4, CPN-23, CPN-40, & CPN-44. CPN-4 was repaired by | ||
Zone 4 was tested after isolating the above penetrations. | ,welding a hole in the bellows. CPN-23, CPN-40, & CPN-44 also had holes in the bellows but. were not repaired per AEPSC review of the plant FSAR determining that bellows on containment, penetrations are not needed to maintain the leak-tight integrity of containment. Zone 4 was tested after isolating the above penetrations. | ||
PAGE 1 | PAGE 1 | ||
TABLE 1 Volume Guideline As Found As Left Description Valve (sccm) (sccm) (sccm) | |||
Upper Vent. | |||
Supply VCR-105 8 VCR-205 3600 20019 80 Air Part. Rad. | |||
Mon. SM-1 60 623 109 Nitrogen to PRT N-159 8 N-285 45 565 40 Charging to Regen. Hx CS<<321 180 23818 744 RCDT Vent Header DCR-203 8 DCR-207 120 297 20 RCT Vent Header N-160 8 DCR-201 120 1639 258 CLVGCUV Drain Header ,.DCR-620 6 DCR-621 120 2407 RHR Recirc ICM-305 1080 5910 | |||
'E'ower Cont. | |||
Monitor ECR-33 8 ECR-35 60 2495 1907 Air Particl Rad. Mon ECR-31 6 ECR-32 120 1300 1243 Boron Injection ICM-251 240 703 40 Boron Injection ICM-250~ 240 1854 51 CPN Coils 384 CCW CCW-243-72 60 3229 120 Glycol Return Expan. R-157 60 7947 J | |||
Post Accident Sample Sup ECR-416 15 250 Post Accident Sample Sup ECR-417 15 299 | |||
W L | |||
Volume Guideline As Found As Left Description Valve (sccm) (sccm) (sccm) | |||
Control Air To Cont. XCR-102&XCR-103 120 532 532 CPN Coils 285 CCW CCW-243-'25,> 60 109 109 CPN Coils 384 CCW CCW-244-72 60 271 271 CPN Coils 285 CCW CCR-440 60 188 188 Plant Air to Cont. check Valves PA"342 120 3974 3974 Personnel Airlock Cover Flange N/A 55 121 121 Zone 4 Piping Pene. N/A 1173 19853 802 | |||
TABLE 2 During the B&C leak rate testing the following penetrations"'ere found to have excessive leak rates and required repairs: | |||
Volume Descri tion Valve $j R~eaiea Upper Vent, Supply VCR-105&VCR-205 VCR-105: Xnspected seal & seat, found no damage VCR-205: Manufacturer replaced seal, repaired seat, replaced dowel pin Air Part. Rad. Mon. SM-1 Replaced Valve Nitrogen to PRT N-159&N-285 N-159: Lapped seat, replaced | |||
.plug, spring, & gasket N-285: Replaced wedge & gasket Charging to Regn. Hx CS"321 Replaced disc & gasket RCDT Vent Header DCR-203&DCR-207 DCR-203: No repair necessary DCR-207: Replaced diaphragm RCDT Vent Header N-160 & DCR-201 N-160: Cleaned valve disc & seat DCR-201: No repair necessary CLV&CUV Drain Header DCR-620&CR-621 DCR-620: Cleaned seat DCR-621: Cleaned seat, replaced packing 10K Recirc. 'E'CM-305 Lapped disc. | |||
Lower Cont. Monitor ECR-33 & ECR-35 ECR-33: Cleaned & lapped seat ECR-35: Machined seats & repacked valve Air Particle Rad. Mon ECR-31 & ECR-32 ECR-31: Iapped plug & seat, replaced gaskets ECR-32: No repairs req'uired Boron Injection ICM-251 Iapped seat Boron Injection XCM-250 Lapped Seat CPN Coils 3&4 CCW CCW-243-72 Replaced valve Glycol Return Expan. R-157 Cleaned seat Post Accident Sample .. .ECR-416 a Lapped & machined seat & plug, Sup. a replaced gasket PAGE 4 | |||
~ ~ | |||
4 | |||
TABLE TWO (con't.) | |||
Volume Descri tion Valve 8 R~eeire Post Accident Sample ECR-417 Lapped seat 6 plug, Sup. replaced gasket Zone 4 Piping N/A Welded hole in bellows Penetrations of CPN-4. CPN-23, CPN-40 and CPN-44 were isolated from the containment penetration and weld channel pressurization system PAGE 5 | |||
i'' | |||
~ = | |||
vi, I, II | |||
'C lq | |||
TABLE 3 | |||
.Guide-Valve ~ | |||
1 ine Mar84-Jun84 Nov82- an8 ar sccm found eft found e t sccm SCCm Scc sccm Scc VCR-205& | |||
VCR-205 3600 20019 80 124 12 SM-I 60 623 109 120 120 2 40 2 40 N-159 & '0 N-285 45 565 501 501 CS-321 180 23818 744 16977 06 61 DCR-203& | |||
DCR-207 120 297 20 50 25 N-160 & | |||
DCR-201 16 258 I 2 I 10 I 8 120'20 DCR-620& | |||
DCR-621 2407 12 ICM-305 1080 5910 02 02 I 0 I 0 ECR-33& | |||
EC R-35 60 24 5 I 07 421 421 40 14 I ECR-31& | |||
ECR-32 120 I 00 124 22 0 I I ICM-25I 240 70 4'0 6 7 ICM-250 240 I 4 CCW-243-72 60 22 120 I 6 2 R-157 60 794 0 ECR-416 15 250 ECR-417 15 XCR-102& | |||
XCR-103 120 532 532 41 419 CCM-243-25 60 109 109 1010 0 CCW-244-72 60'71 271 170 4 4 65 1802 CCR-440 60 188 188 21325 0 PA-342 120 974 3974 N A N Airlock Cover Flan. 121 121 49.6 4 .6 N Zone 4 Pip ~ | |||
Pe etration 117 802 Page 6 | |||
'}} | '}} |
Latest revision as of 07:19, 29 October 2019
ML17321A181 | |
Person / Time | |
---|---|
Site: | Cook ![]() |
Issue date: | 12/31/1984 |
From: | INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
To: | |
Shared Package | |
ML17321A180 | List: |
References | |
NUDOCS 8410290030 | |
Download: ML17321A181 (14) | |
Text
REPORT OF TYPE B AND C LEAK RATES D. C. COOK PLANT UNIT 2 1984 MDTRO INNEf M NPY.
(
8+<0<~
8gg0gq0030 050003i6 PDR *DOCY PDR P,
0 j
TABLE OF CONTENTS SECTION TITLE PAGE 1.1
SUMMARY
OF RESULTS 2.0 TABLES 2.1 TABLE 1 2-3 2.2 TABLE 2 2.3 TABLE 3
1..0
SUMMARY
OF RESULTS As indicated in the accommanying ILRT report, Type A leakage test results do not indicate a failure to meet the containment overall leakage acceptance criteria. Guideline Type B&C leakages were exceeded, however, as detailed in the following.
Types B & C Leak Rate Testing (**12 THP'4030 STP.203) was performed on Unit 2 between March 12, 1984 and June 29, 1984. Table Ol shows the valves that exceeded their respective guideline leakages. Table 52 gives a brief summary of the repairs made to leaking valves. Table e3 shows a brief history of these valves as tested during previous surveillances.
While testing Zone 4 piping pentrations, several penetrations were found to be leaking. These penetrations were CPN-4, CPN-23, CPN-40, & CPN-44. CPN-4 was repaired by
,welding a hole in the bellows. CPN-23, CPN-40, & CPN-44 also had holes in the bellows but. were not repaired per AEPSC review of the plant FSAR determining that bellows on containment, penetrations are not needed to maintain the leak-tight integrity of containment. Zone 4 was tested after isolating the above penetrations.
PAGE 1
TABLE 1 Volume Guideline As Found As Left Description Valve (sccm) (sccm) (sccm)
Upper Vent.
Supply VCR-105 8 VCR-205 3600 20019 80 Air Part. Rad.
Mon. SM-1 60 623 109 Nitrogen to PRT N-159 8 N-285 45 565 40 Charging to Regen. Hx CS<<321 180 23818 744 RCDT Vent Header DCR-203 8 DCR-207 120 297 20 RCT Vent Header N-160 8 DCR-201 120 1639 258 CLVGCUV Drain Header ,.DCR-620 6 DCR-621 120 2407 RHR Recirc ICM-305 1080 5910
'E'ower Cont.
Monitor ECR-33 8 ECR-35 60 2495 1907 Air Particl Rad. Mon ECR-31 6 ECR-32 120 1300 1243 Boron Injection ICM-251 240 703 40 Boron Injection ICM-250~ 240 1854 51 CPN Coils 384 CCW CCW-243-72 60 3229 120 Glycol Return Expan. R-157 60 7947 J
Post Accident Sample Sup ECR-416 15 250 Post Accident Sample Sup ECR-417 15 299
W L
Volume Guideline As Found As Left Description Valve (sccm) (sccm) (sccm)
Control Air To Cont. XCR-102&XCR-103 120 532 532 CPN Coils 285 CCW CCW-243-'25,> 60 109 109 CPN Coils 384 CCW CCW-244-72 60 271 271 CPN Coils 285 CCW CCR-440 60 188 188 Plant Air to Cont. check Valves PA"342 120 3974 3974 Personnel Airlock Cover Flange N/A 55 121 121 Zone 4 Piping Pene. N/A 1173 19853 802
TABLE 2 During the B&C leak rate testing the following penetrations"'ere found to have excessive leak rates and required repairs:
Volume Descri tion Valve $j R~eaiea Upper Vent, Supply VCR-105&VCR-205 VCR-105: Xnspected seal & seat, found no damage VCR-205: Manufacturer replaced seal, repaired seat, replaced dowel pin Air Part. Rad. Mon. SM-1 Replaced Valve Nitrogen to PRT N-159&N-285 N-159: Lapped seat, replaced
.plug, spring, & gasket N-285: Replaced wedge & gasket Charging to Regn. Hx CS"321 Replaced disc & gasket RCDT Vent Header DCR-203&DCR-207 DCR-203: No repair necessary DCR-207: Replaced diaphragm RCDT Vent Header N-160 & DCR-201 N-160: Cleaned valve disc & seat DCR-201: No repair necessary CLV&CUV Drain Header DCR-620&CR-621 DCR-620: Cleaned seat DCR-621: Cleaned seat, replaced packing 10K Recirc. 'E'CM-305 Lapped disc.
Lower Cont. Monitor ECR-33 & ECR-35 ECR-33: Cleaned & lapped seat ECR-35: Machined seats & repacked valve Air Particle Rad. Mon ECR-31 & ECR-32 ECR-31: Iapped plug & seat, replaced gaskets ECR-32: No repairs req'uired Boron Injection ICM-251 Iapped seat Boron Injection XCM-250 Lapped Seat CPN Coils 3&4 CCW CCW-243-72 Replaced valve Glycol Return Expan. R-157 Cleaned seat Post Accident Sample .. .ECR-416 a Lapped & machined seat & plug, Sup. a replaced gasket PAGE 4
~ ~
4
TABLE TWO (con't.)
Volume Descri tion Valve 8 R~eeire Post Accident Sample ECR-417 Lapped seat 6 plug, Sup. replaced gasket Zone 4 Piping N/A Welded hole in bellows Penetrations of CPN-4. CPN-23, CPN-40 and CPN-44 were isolated from the containment penetration and weld channel pressurization system PAGE 5
i
~ =
vi, I, II
'C lq
TABLE 3
.Guide-Valve ~
1 ine Mar84-Jun84 Nov82- an8 ar sccm found eft found e t sccm SCCm Scc sccm Scc VCR-205&
VCR-205 3600 20019 80 124 12 SM-I 60 623 109 120 120 2 40 2 40 N-159 & '0 N-285 45 565 501 501 CS-321 180 23818 744 16977 06 61 DCR-203&
DCR-207 120 297 20 50 25 N-160 &
DCR-201 16 258 I 2 I 10 I 8 120'20 DCR-620&
DCR-621 2407 12 ICM-305 1080 5910 02 02 I 0 I 0 ECR-33&
EC R-35 60 24 5 I 07 421 421 40 14 I ECR-31&
ECR-32 120 I 00 124 22 0 I I ICM-25I 240 70 4'0 6 7 ICM-250 240 I 4 CCW-243-72 60 22 120 I 6 2 R-157 60 794 0 ECR-416 15 250 ECR-417 15 XCR-102&
XCR-103 120 532 532 41 419 CCM-243-25 60 109 109 1010 0 CCW-244-72 60'71 271 170 4 4 65 1802 CCR-440 60 188 188 21325 0 PA-342 120 974 3974 N A N Airlock Cover Flan. 121 121 49.6 4 .6 N Zone 4 Pip ~
Pe etration 117 802 Page 6
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