ML20010G889

LER 81-136/01T-0:on 810825,during Test of Turbine Driven Auxiliary Feedwater Pump,Suction Piping Was Overpressurized When Pump Tripped.Caused by Lack of Protection for Auxiliary Feedwater Pump Suction Piping.Damaged Instruments Checked

ML20010G889
Person / Time
Site:	McGuire
Issue date:	09/08/1981
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010G883	List: ML20010G882 ML20010G889
References
LER-81-136-01T, LER-81-136-1T, NUDOCS 8109220629
Download: ML20010G889 (1)

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1 Ev'NT E3catr*1cM Amo anCSA4LA CONSsCUENC13 h l a i 2 ! tJhil e in mode 2. during a test of the turbine driven auxiliary feedwater pump i 1 i3,3, g(TDAFWP), the suction piping was overpressurized when the pump was tripped. Thip l

62..i violates T.S.3.3.2 and is reportable per T.S.6.9.1.12(e). In addition to the opy i3,3, prability of the two motor driven auxiliary feedwater pumps, analysis has deter-IoisI hined that even with the leaks caused;y the overpressurization, the TDAFWP could  ;

g ptill have provided adequate feedwater if it had been needed, and thus the hea:th

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,,,,, piping because it was tnought that the S/G swing check valves would prevent any,

,,,,, ackflow or back pressure. The instruments that were damaged and/or exposed to ,

It 26 the excessive nressure were checked. reen11brated. nnd/or rennired. and relief i

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