ML20085E561
| ML20085E561 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 05/06/1976 |
| From: | Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20085E564 | List: |
| References | |
| LER-ER-76-011, LER-ER-76-11, NUDOCS 8308150358 | |
| Download: ML20085E561 (2) | |
Text
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UCENSEE EVENT REPORT CONTROt 8LOCx:l_ l l I I I
I pts nr att a usiso minnassarion) 1 8
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UCENsE NUMBER T
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E I sir lPl Al Ll1l l 6 l 0l-l0 l 0 l 0 l 0l 0l-l 0 l 0 l l hl 1l 1l1 l1l 7 89 14 15 25 28 30 31 32 DOCKET NUM8ER EVENT DATE REPORT DATE O COwr l l l
@ souRC[LJ l 01 si 01-10121 si sl 10 I a l 2181716 I I 01 s101617 I 61 7 8 57 58 59 80 81 88 89 74 75 80 EVENT DESCRIPTION Q lDuring the Palisades local leak rate testing, the test on penetration #h6 showed l
7 89 80
@ lleakage above acceptable limits (about 111 liters / min). The leakage was associated I 7 89 80 Q lwith one of two in series valves. The second valve performed satisfactorily.
l 7 R9 80
@ lAffected parts replaced.
(ER-76-011)
I 7 8 80
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7 89 80 m
CEDE NE CCMPONENT CODE VELATEN
'M lSl DI W lVI Al LIVI El X]
W l M I 1 l 21 0l 7 89 10 11 12 17 43 44 47 48 CAUSE OESCRIPTION HG l The valve (CV-1101) is a h" globe valve with Teflon soft seats.
Inspection dis-l 7 89 80 32 l closed that the seats were vorn from use (normal wear). The valve is a 150 psi ASA l 7 89 80 3 I rated valve made of carbon steel, Model 38-20571, and is air operated.
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% POWER OTHER STATUS O Ovt OaSCOVERY OESCRIPTON d
l0 l010 l l NA I d l
NA l
1 7 8 9
10 12 13 44 45 48 80 RELE O O E
AMOUNT OF ACTMTV LOCATON OF RELEASE E
LZ_J Lzj l
NA l
l NA l
7 8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTON DE 10101 d Lzj l NA J'
7 89 11 12 13 a0 PERSONNEL INJURIES NUMBER DESCRIPTON 3[ l 0l 010 l l NA l
7 89 11 12 80 PROBABLE CONSEQUENCES i
3E INone. Redundant valve operated properly.
l 7 89 80 LOSS OR OAMAGE TO FACIUTY TYPE DESCRIPTON 32 [Z_} l NA l
7 89 10 80 PUBUCITY 30 I NA l
7 89 80 AOOITIONAL FACTORS El NA l
, 89 8308150358 760506 80 PDR ADOCK 05000255 l
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Mr James G. Keppler
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Office of Inspection Enforcement
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, f~g Region III
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cem:ssum US Nuclear Regulatory Co= mission
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799 Roosevelt Road
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Glen Ellyn, IL 60137 4, t ; La DOCKET 50-255, LICENSE DPR PALISADES PLANT, ER-76-011 CONTAINMENT ISOLATION VALVE l
Attached is a Licensee Event Report which relates to the Palisades Plant.
I This event was originally thought to be nonreportable since containment l
integrity was not required at the time the problem was observed and a i
second isolation valve performed satisfactorily. Later review disclosed i
that it may be reportable as " abnormal degradation discovered in the pri-mary containment." Such an interpretation must conclude that degradation of one of two in series valves designed to isolate containment is intended
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to be reported under the prompt notification requirements.
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1 David A. Bixel Assistant Nuclear Licensing Administrator CC:
R. A. Purple, USNRC i
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