ML20085E852

LERs75-011 & 75-012:on 751122,LPSI Pump Seal Leakage Noted During Periodic Test.Caused by Improper O-ring Clearance. Improved Seal Design & Repair Time Reduction Time Will Be Investigated

ML20085E852
Person / Time
Site:	Palisades
Issue date:	12/22/1975
From:	Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
75-012, 75-12, LER-75-011, LER-75-11, NUDOCS 8308160609
Download: ML20085E852 (2)

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LICENSEE EVENT REPORT CONTROL BLOCK:l l l l l l [ PRINT ALL REGUWlED INPtHIMATION) 1 6 .,

AME LICENSE NUMBER PE Y 3

/ 89 lMlIlPlAlLl1l 14 l0 l 0 l-l 0l 0l 0l0 l0 l-l 0 l 0 l l h\ ll1l 1l1 l l0l3l 15 25 28 30 31 32 CATEGORY TYP AE OOCKET NUMBER EVENT DATE REPORT OATE 7 8 O 1 CON'T l

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• l 57 58 59 d60 l0 l 5 l 0 l-l 0 l2 l5 l5 l 61 68 l1l1l2l21715l 69 74 l1 l2 l2 l 2 l T l 51 75 80 EVENT DESCR!PTION DE l During normal operation, LPSI pump seal leakage was observed while performing a l 7 89 80 EE l neriodic test. The pump was removed from service and the redundant pump demonstrated l 7 89 80 DE l operable. There are no records of previous problems. The seal was replaced with a l 7 89 80 UE l similar unit (UE-75-11 & -12). l 7 89 80 E!! l l 7 89 pas 80 C DE CODE COMPONENT CODE MANUF VIOLATION

@l lS lF l @ l PlU lM lP l X l Xl [Nj lI l0 l7 l5 l [N j 7 89 10 11 12 17 43_ 44 47 48 CAUSE DESCRIPTION DE l Seni leakage accears to be caused by improper 0-ring clearance. The pump is Type l 7 89 80 h l 8X21 Al, Ser A-67393 or h. The plant staff vill investigate improved seal design l 7 89 80 Q l and methods for reducing repair time. l sfA  % POWER OTHER STATUS DISCOVERY OISCOVERY DESCRIPTON 1

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9 lO!7l0l l NA l d45 l NA l 10 12 13 44 48 80 AftE SEO OF E ASE AMOUNT OF ACTIVITY LOCATON OF RELEASE EE 7 8 d

9 dl10 11 NA l 44 l

45 NA l 80 PERSONNEL EXPOSURES NUMBEA TYPE DESCAIPTON DE l010101 tzj l NA l 7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTON E {0l0l0l 7 89 l NA l

11 12 80 PROBABLE CONSEQUENCES -

gg l No probable consequences. Redundant pump was demonstrated operable.

l 7 89 80 LOSS OR OAMAGE TO FACILITY TYPE DESCRIPTON 32 l NA l

7 89 10 80 PUBLICITY EE l NA l

AOGITIONAL FACTORS 8308160609 751222 PDR ADOCK 05000255 i

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7 89 80 DE I l 7 89 g

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n . . . . . . ,7 senerei omC..: :na we.t MichQan Avenue.JeChson. Michigan 49201 e Area Code 517 788-0550 December 22, 1975

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Mr James G. Keppler d .

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Office of Inspection Enforcement h N- "r ,: .N

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Region III L w. / /,h#

US Nuclear Regulatory Commission ,T,, , /UV.' -

799 Roosevelt Road Glen Ellyn, IL 60137

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s-DOCKET 50-255, LICENSE DPR-20 lEFILE COPY PALISADES PLANT, REPORTABLE OCCURRENCES UE-75-11 & UE-75-12 Attached is a reportable occurrence report which relates to the Palisades Plant and has been classified as a condition leading to operation in a degraded mode.

Plant Technical Specifications permit operation to continue for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with an addi,tional 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> allowed to reach the hot shutdown condition. The pump was out of service for 29 hours3.356481e-4 days <br />0.00806 hours <br />4.794974e-5 weeks <br />1.10345e-5 months <br /> and plant shutdown was not required.

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c y<;r-David A. Bixel Assistant Nuclear Licensing Administrator CC: File COPY SFINT REGION  %

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