ML20141L921

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Forwards Util Reporting Incident That Occurred at Plant on 720926 Resulting in Inoperable Pumps in Standby Liquid Control Sys
ML20141L921
Person / Time
Site: Oyster Creek
Issue date: 10/13/1972
From: Skovholt D
US ATOMIC ENERGY COMMISSION (AEC)
To: Siess C
Advisory Committee on Reactor Safeguards
Shared Package
ML20091A092 List: ... further results
References
FOIA-91-282 NUDOCS 9203270182
Download: ML20141L921 (2)
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Text

._ _ . .

5' UNITED STATES

[ 'd .' - ATOMIC ENERGY COMMISSION AIb g womNotoN. o c. mo

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^o o October 13, 1972

.g is . , O ', le Docket No. 50-219

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Wi YJ /.G5 Dr. Chester P. Siens Chairman, Advisory Ccmanit tee on Reactor Safeguards U. S. Atomic Energy Commission Washington, D. C. 20545

Dear Dr. Siess:

i Sixtee- (16) copies of the following are transmitted for the Ccmrnittee's I

i n f o rma t i o n:

l Letter from Jersey Central Power 6 Light Company dated r

October 6, 1972. reporting an incident that occurred at Oyster Creek on September 26, 1972, in which it van discovered that the two pumps in the standby liquid control system were inoperable at the snme time.

' Letter from Jersey Central Power 6 Light Company dated October 9, 1972, furnishing additional information on flooding of critical equipment at Oyster Creek.

S inc e rel y ,

i h .,. g ' // b N W 4

Donald J, $kovholt Assistant Director for Operating Reactors I Directorate of Licensing

Enclosures:

As stated

  • 16 cooles of this item were sent to vou this date through error by our mail rocm j '? ' ' n . .

O m Op* . . , . . , [(% y I' u ba LL .'.l- UCl Q blb 9203270182 91o907 u PDR FOJA DEKDK91-pep <e ppg .

. .___ __ _ _ _ ___ __~ ._ - _ _ _ _ _ . _ _ _ _ _ _ . _ _ _ - __ _

o I '10 H SUFF1 DENT N3.159 CATEGORY l Dretar Creel November 24, 19 k h WR8 g,

Core Sprav systen v.%"~-

4 W..*j.;

AC15 Jersey Central Power & Liaht Company letter dated Octek r L 1972 ,

torwards Supplement No. 2 to the Core Spray System Water Nemmer Study and responds to the ARC's questions.

No ACKS action is recommended.

N enciesed material should be retained as part of the permanent record.

_ _ . (JCM) l WRS b

Both Stendby Lieut d Control Pimaps Out of 86tvice at the_ Bans Time _

ACRS JeresY Central Pwer & Lhht Cocoany letter dated October L _1)]l reports that the "A" standby liquid centrol psusp was taken out of service for replacement of the pump packing. h a en attempt was made to test the "8Y pump it failed to start. N problem was a design error in the pump control circuitry. When the conditten was discovered a normal plant shutdown was initiated watil action could be taken to restore one pump to operation. Operating procedures have b9en changed so that operability tests of redundant engineered safeguards system components will be made immediately following any action chat requires one of the syster.s to be inoperable for maintenance purpo:es.

No ACitS action is recounended. N enclosed material may be discarded after your review.

l'

, (JCM)_

f WRS Floodint of Critical Ecut+-st l 6

, ACRS Jersey Central Power & Liaht Company letter d,ggd _0ctober 9.1972 #

submits an evaluation of potential flooding of critical equipment j by f ailure of r.on Cisse I eyetems. No situations were uncovered where a

a rupture would cause flooding which would adversely affect the i

performance of the engineered safeguards systems to a point where they would be unable to perform their intended function.

No ACRS action is recommended. N anelosed material should be retained as part of the permanent record.

(JOO omet > .. ACRS.. . - . - 4 - -~~ " ~ ~

JCM:bjv suu.awt > . . . . . . . . . . . . . - . . . -. - - . . - " " * ~ ~ ~ ' " ~ ~ ~ ~ ~ ~ " ~

11/24/72 OATt > ........-.:

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f orm AIC.)lt (Rev. 9 $3) AICM 0240 e*. .e sM.- s i esH 4e W.

. . . _

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