ML19319D790

AO 74-02,motor Operated Isolation Valve to Reactor Bldg Emergency Sump Failed to Operate During Surveillance Tests of Valve HV 26106.Cause Under Investigation

ML19319D790
Person / Time
Site:	Rancho Seco
Issue date:	09/07/1974
From:	Reinaldo Rodriguez SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
References
NUDOCS 8003250788
Download: ML19319D790 (1)

Text

.

M-a F~ 74-322

-N

)

./

September 7, 1974

~/

s Mr. E. L. Engelken Director of Regulatory Operations Region V ri AEC Regulatory Operations Office 1990 No. California Boulevard-Walnut Creek Plaza, Suite 202 Walnut Creek, California 94596 Re: AEC Docket No. 50-312 Rancho Seco Nuclear Generating Station, Unit No. 1 Abnormal Occurrence No. 74-2

Dear Mr. Engelken:

During Surveillance Testing of HV'26106,.a motor operated isolation valve to the Reactor Build _ing emergency sump, it was determined that HV 26106 would not come open.

\\-

Investigation to determine the cause of this malfunction is under way.

S4ncerqyyours, Mt' p.

~

.R. J.

odriguez Plant Superintend $nt Rancho Seco Unit 1 Clay Station, California 95638 RJR: sal 501 //

hs

.t.

/4 gj OEEflVE0 k,

see o ig7., g

a g

D:R. or gea, CMlCil y l

C J ' "* y A-l

, s)

,co

l

?g OPEynagt, ER Qg

'5 f' COPY SENT TO:

y NS10 s CIC-turnins0~hW"-Lt

- 1. ', in tt:p t: s i.r s i v s t a '.

t. t.

vart nt: LT r

I O

32 0

[

(

.