ML17339A813

LER 80-004/03L-0:on 800225,operator Detected Radiator Tube Leak on Emergency Diesel Generator A.Probably Caused by Foreign Object Being Forced Into Radiator by Cooling Fans. Leak Repaired W/Epoxy Patch & New Radiator Cores Ordered

ML17339A813
Person / Time
Site:	Turkey Point
Issue date:	03/26/1980
From:	Schoppmann M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17339A812	List: ML17339A811 ML17339A813
References
LER-80-004-03L-01, LER-80-4-3L-1, NUDOCS 8004030256
Download: ML17339A813 (2)

Text

NRC PORM SIM U 5 NUCl.tAR RBGULATORV COMMISSION i7.77l I.ICEINSEE EVEIIIT REPORT

~a CONTROI %LOCI%I I to INPORMATIONI S~SLLJ 0 IQI (PLBABB PRIN'7 OR TYP% ALL R %CUIR I

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~O ~ I 1 3 41 QOCI48T NUM98tt tvtNT OAT% 14 15 ASPOItTQArt BVBNT OBSCRIPTION *NO PROBABLK CONSKOUBNCKB Qlo An operator detected a radiator tube leak on the A Emer enc Diesel Generator (EDG). This degradation is reportable pursuant to.TS 6.9.2.b.2.

~O The radiator and other unrelated EDG components were repaired. .The EDG was tested and returned to service within 45 hours. During the period

~08 the A EDG as t e t B e e nd available. similar occurrence of radiator failure re orted as

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~o 7 A a EDG was

~o a LER 250-77-6.

7 4 9 10 SY5T8M CAUS% CAUS% COMP. VALV8 Coot CCQ% SUSCQQ% CCMPONSNT CQQ% su!coot suecoot

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~S QI7 Atpoer 11 11 11 14 18 11 1$ 19 10 11 11 ACTION PUTUNt TAKtN ACTION SPPtC CN PLANT SIIUTQOWH Mtrltdo NOUIIS ii ATTACI>MSNT

$ oeMITTSO NPNOM POIIM SU8, PIIIM8CQMP, SUPPUtR COMPONtNT

>4ANUPAC >UASR RJSLIS L'JS I'-JS 54 54 LJS LES HIS 41 45 ~4 47 CAUSB OBSCRIPTION ANO CORRBCTIVB ACTIONS Qil o The fins in'the area of the tube leak were dis laced and the tube was slightly indented. This probably resulted from a foreign object being forced into the radiator b t'e coolin fans. This dama e cou led with

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de rada a e v cause of t e eak t ve t n is discussed in the attachment.

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~AQil Operator observation ACTIVITY QQNT8NT

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ea 99 10 NAMB OP PRBPARBR M. A. Scho man NBI (305) 552-3802 8,O6,40.30 ~~@

KEPORTABLE OCCURRENCE 250- 4 c LICENSEE EVENT REPORT PAGE TWO Additional Cause Descri tion and Corrective Actions:

The fins in the area of the tube leak were displaced and=the tube was slightly indented. This probably resulted, from a foreign object being forced into the radiator by the cooling fans. This damage coupled with degradation induced by the external environment was the'probable root cause of the leak. The leak was repaired with an epoxy patch. New radiator cores have'een ordered. The integrity of both the A & B EDG radiators was verified by visual examination.

Component Data:

Young Radiator Company Racine, Wisconsin Model 8495D Monoweld Cooler Assembly Drawing i/D238084 Job, f/25604 Working Pressure 35 psi Test. Pressure 40-50 psi Air