ML20085E440

LER ER-76-043:on 761202,small Leak Observed in Charging Pump Suction Header Near B Charging Pump.Caused by Type of Tee (Field Fabricated Type) & by Pipe Vibration at Tee Location

ML20085E440
Person / Time
Site:	Palisades
Issue date:	12/30/1976
From:	Bixer D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-ER-76-043, LER-ER-76-43, NUDOCS 8308120011
Download: ML20085E440 (2)

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[ENSEE EVENT REPORT Q Palisadas CONTROL BLOCK:l l l l l l l (pL8AS8 PRNWT ALL R800280 INFORAAATION) 1 8 i ucaNSE NUMSER

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[OB l M I Il Pl A l L l 1l 7 89 14 l0l0l-l0l0l0l0l0l-l0l0l 25 l k l 1l 1l 1l1 l l0l7l 15 28 30 31 32 "Tl '" ."o*u?S occxer NuM=a EvENr OAT. =,oeT oATE 01 CONT l # l'# l 7 8 57 58 59 W80 l0l5l0l-l0l9lSl9l 61 88 l1l 2 l 0l 2 ! 7l6 l SS 74 l1l2l9l0l7l6l 75 80 t

EVENT DESCRIPTION gg l During a routine inspection of the plant a small leak was observed in the charging pu=pl 7 89 80 Q l suction header near the "B" charging pump. The leakage was estimated to be 10 to 15 l 7 89 80 SC l cc/ min. The initial corrective action utilized a clame tyve seal over the leak. A l 7 89 80 SE l review of the pipe vibration, possible tee replacement (with a standard tyre) and l 7 89 80 3E l adecuacy of clamn tvte fixes (as termanent) vill be conducted (Contd on Line 18) l E $o*E coupoNENT cooE E IRlsi b_]

7 89 10 11 lpI1lPlEIIIXl 12 17 W43 44 lXlQlolol 47 d48 CAUSE DESCRIPTION Q l The apparent cause of the problem is related to both the type of tee (field l 7 89 80 M l fabricated type) and the pipe vibration occurring at the tee's location. l 89 80 t El l E spowEn oTwEn status IacovEE .

oscovEnv otscMmoN i Loj 10l0lsl l NA l d45 l NA  !

7 8 9 10 12 13 44 48 80

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LzJ 10 11 AMot:NT or AcTuty NA I 44 I

45 LocATCN cP RELEASE Ni 80 l

t PERSONNEL EXPOSURES NUMSEA TvPE DESCMmoN EE l0l0l0l dl NA l 7 89 11 12 13 80 PERSONNEL INJURIES NUMSER oESCMrfloN QC l0 l O! 0l l NA l 7 89 11 12 80 PROBABLE CCNSEQUENCES . .

DE I None. Leakage was not sufficient to affect operation..; l 7 89 80 LOSS OR DAMAGE TO FACllJTY Type DEsca Tion l 32 W 7 89 l

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80 Pu m 8308120011 761230 PDR ADOCK 05000255

@ l None. S PDR l 7 89 80 i

ADDITIONAL FACTORS

, M l (Contd Frem Line 06) to determine final resolution. Records of final corrective l 7 89 80 Q l action vill be available at the plant. l 7 89 80

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l COR80mes 3 Power OQmR E EHE COPY. l a.n.r.: omo.. nin w.. wenig.n av.nu., s cw.on. Michig.n 49201 e Ar.. Cod.517788-0550 December 30, 1976 _

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Mr James G Keppler

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Office of Inspection & Enforcement 4 &

Region III 4 g NN US Nuclear Regulatory Co=:nission h

.4-799 Roosevelt Road I

Glen Ellyn, IL 60137 DOCKET 50-255, LICENSE DPR PALISADES PLANT - ER-76 LEAK IN CHARGING PUIE SUCTION LINE Attached is a reportable occurrence which relates to the Palisades Plant.

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This event is considered to be abnormal degradation of a system designed to contain radioactive material. No release to the environment occurred as a result of this event.

David A Bixel (Signed)

David A Bixel Assistant Nuclear Licensing Administrator O 115