ML20008F719

LER 81-002/03L-0:on 810213,brass Filings Found in Oil Sump of Outboard Motor Bearing of RHR Svc Water Booster Pump. Caused by Loose Inboard Motor Fan & Set Screw.Fan Repaired & Second Set Screw Added

ML20008F719
Person / Time
Site:	Cooper
Issue date:	03/13/1981
From:	Doan P NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20008F717	List: ML20008F716 ML20008F719
References
LER-81-002-03L, LER-81-2-3L, NUDOCS 8104210535
Download: ML20008F719 (1)

Text

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REPORT OATE 80 EVENT DESCRIPTION AND PROB A8LE CONSEQUENCES h 10121 [During routine preventative maintenance of the RHR Service Water Booster Pumps, l g o l a i l brass filings were found in_t h .e oil sump of the outboard motor bearing. This is a l l o 14 I Irepeat occurrence on the same motor from 1974. however, that occurrence was not re-I l o I s l loorted at that time. The redundant loop was operable as well as both diesel Rener- l 10 is I bra. Thovo . .. v , m na1rovea ns f o,- e e en che n,ih 1 4 ,- hanleh anA cafne - (RTA 1. 5_ n _11 I lo lil i I 10181 l l 7 8 9 80 SYSTEM CAUSE CAUSE COVP. VALVE CODE COOE SUSCODE COMPONENT CODE SUSCODE SUSCODE M

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3J 34 3d 36 31 4 el 42 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h RM l%eo* fa , 1000 up Type G T e rrt4cn Motor. Further i m rection found inboard motor l lil,] Ifan loose en the shaft producing the filings. The loose fan replaced in 1974 by thel 1,i,iJmanufacturer appeared to have inadequate shrink fit and the set screw was loose. l W lFan was repaired and a second set screw added. Rotor was balanced, reinstalled, andl I i l 4 I l-totor nroven onernble. The other noter sum s were inspected and no filings found. I i a 9 So ST *.POWER OTHER STATUS DISCO R DISCOVERY OESCRiPTION l i 15 l l E l@ l 0] 916l@l NA l l l@l Maintenance Observation l A TivtTY CONTE?7 RELE ASE D OF RELE.*S8 AVOUNT OF ACTIVITY LOCATION OF RELE ASE Lusj ULJ @ i_gj@l NA l l NA 80 l

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