05000298/LER-1980-008-03, During Scheduled Insp of Reactor Core Isolation Cooling Turbine,Two Damaged Buckets on Wheel Were Discovered.Caused by Nonimpact Type Impingement of Foreign Object on Wheel

During Scheduled Insp of Reactor Core Isolation Cooling Turbine,Two Damaged Buckets on Wheel Were Discovered.Caused by Nonimpact Type Impingement of Foreign Object on Wheel

ML19331E012
Person / Time
Site:	Cooper
Issue date:	08/20/1980
From:	Flannigan R NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19331E010	List:
References
LER-80-008-03X, LER-80-8-3X, NUDOCS 8009050190
Download: ML19331E012 (1)

LER-1980-008, During Scheduled Insp of Reactor Core Isolation Cooling Turbine,Two Damaged Buckets on Wheel Were Discovered.Caused by Nonimpact Type Impingement of Foreign Object on Wheel

Event date:
Report date:
2981980008R03 - NRC Website

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d 60 61 DOCK E T NUVM E M 68 69 EVENT DATE 74 7S REPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h I o i 2 I puring a scheduled inspection of the RCIC turoine, it was discovered that two buc-l iO i3i Kets on the turbine wheel were damaged. This could have resulted in operation in a l

io i4 ; pegraded mode as permitted by Tech. Spec. Section 3.5.D. The reactor was in cold l

lnisi phutdown condition at the time of the occurreitee and RCIC was not required to be op-l loisi prable by the Tech. Specs. The RCIC system had met the Tech. Spec. surveillance re-I 1017 I huirements at the time the reactor was shutdown and was considered operable. There i

101a1 yere no adverse affects to the public health and safety.

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.54 Jb J6 31 40 el 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h IiIolIInvestigation indicates the RCIC turbine wheel was damaged by non-impact type im-1 i i loinnement of a foreign obiect on the wheel. The obiect could not be located. The I

l 1 i 1 I [rerry wheel (Terry Turbine Part No. 77595A-24) was replaced. No further action is

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