ML19309G069

LER 80-008/03L-0:on 800312,during Insp of Reactor Core Isolation Cooling Turbine,Two Buckets on Turbine Wheel Were Discovered Damaged.Caused by Foreign Object Striking Wheel During Operation.Investigation Is Continuing

ML19309G069
Person / Time
Site:	Cooper
Issue date:	04/10/1980
From:	Flannigan R NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19309G066	List: ML19309G065 ML19309G069
References
LER-80-008-03L, LER-80-8-3L, TAC-12589, NUDOCS 8005020313
Download: ML19309G069 (1)

Text

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U. S. NUCLEAR REGULAVORY COMMISSloN

- NRc F/)RM 366

'l7 7 A LICENSEE EVENT REPORT 800502" (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h O 2 puring a scheduled inspection of the RCIC turbine, it was discovered that two buc- I o 3 Kets on the turbine wheel were damaged. This could have resulted in operation in a l lo14I pegraded mode as permitted by Tech. Spec. Section 3.5.D. The reactor was in cold I o > phutdown condition at the time of the occurrence and RCIC was not required to be on-l lo161 brable by the Tech. Specs. The ucTc avneam knA mar cha Tach- cnan- evir ra f i l an ca va- I lol7l Muirements at the time the reactor was shutdown and was considered onerable. There l i O 18 I kere no adverse af fects to the oublic heal th and anfatv- l SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SU8 CODE COMPONE NT CODE SUSCODE SUSCODE Lon]s 9 I Cl El@ U@ U@ I T l u l R I s i Il NI@ l_gj@ U @

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44 47 CAUSE DESCRI.* TION AND CORRECTIVE ACTIONS h g Preliminary investigation indicates the RCIC turbine wheel was damaned by a foreien I i i bbject striking it during operation. The Obiect could not be located. The Terrv i i ., Wheel (TerrvTurbine part No. 77595A-24) is being rep 1 mend. Thn enrbina vondnr in I

[t l3l l Continuing the invparigneinn nf Pha neencranca nnA chnei1 A eha f4nni vannve 4nA4rnea 1 g la cause different than that already identified, an amended report will be submitted.1 7 a , e0 ST 5  % POWE R OTHE R STATUS DICOV RY DISCOVEHY DESCRIPTION W (,,,JJJ@ l 01 O l Ol@l NA l LB,j@l Five Year Inspection l ACTivs f y CO TENT RELE ASE OF RELE ASE AMOUNT OF ACTivtTY LOCATION OF RELEASE u =

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/ o [,_,lij@iLOtiPtHJN l NA l lllllIliIIlIl5 i n 9 60 68 69 80 5 NAVE OF PREPARER Richard D. Flanniaan PHONE. 402-825-3811 2 j l

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