ML19105A216

Reporting Abnormal Occurrence of 7/6/1975 for Unit 2 Re Reactor Trip Caused by Sudden Closure of Trip Valve in B Main Steam Line Followed by Closure of a & C Main Steam Line Trip Valves

ML19105A216
Person / Time
Site:	Surry
Issue date:	07/07/1975
From:	Sweeney E Virginia Electric & Power Co (VEPCO)
To:	NRC/RGN-II
References
Download: ML19105A216 (1)

Text

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t Director of Regulatory Opera'Cions 230 Peachtr~e St~ee~ 9 N. W.

Suite 818 Atlanta., Georgia l0.303

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VIRGINIA ELECTRIC ANO P'OWER COMPAl*V

.$.urry Pmter Station P.O. :Box 315 Surry. Virginia 2.3.883

.July 7. 197.5 This is to inform you by telecopy of an Ahnormal Occurrence that vas not~d on July 6 9 1975.at Surry Nuclear PCNer Station.

During*full_p:oi..rer operation on Unit Uo. 2 9 a r~act:or trip occurred ~J;1u.sed by the sudden*

clo.sure of the tTip vtll.ve in 44B main ate.am line £01101:lled by the closure of "A0 and °C0 m.aj.n st:eam line t:rip valve:a.

Testing following the t~ip revealed 'Chat th.e main std.am tx-ip valves in °A'" and, *. C.., et:ean lines wou1d not clo.se.

An invest:iga:t.ion iB currenc1y undel:1.i'ay to determine* t:he -c:.ause of t.he malfunction and (!Orrective ac'Cion co be taken.

f,fY\\4~~

B. H. ~weeney,..Jr~

Stat:1011 Manager

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