05000249/LER-1981-036, Forwards LER 81-036/03L-0

Forwards LER 81-036/03L-0

ML20039E071
Person / Time
Site:	Dresden
Issue date:	11/23/1981
From:	Scott D COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20039E072	List: 05000249/LER-1981-036, Forwards LER 81-036/03L-0 05000249/LER-1981-036-03, /03L-0:on 811102,while Performing Surveillance Dis 287-1,pressure Switch PS3-1554E Failed to Operate at Required Pressure.Caused by Plugged Instrument Snubber. Snubber Cleaned
References
81-930, NUDOCS 8201060495
Download: ML20039E071 (1)

LER-1981-036, Forwards LER 81-036/03L-0

Event date:
Report date:
2491981036R00 - NRC Website

text

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7' Commonwealth Edison j-

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R.R. #1 7 - Morris, Illinois 60450 i

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' Telephone 815/942-2920 v

November 23, 1981 DJS LTR #81-930 D

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fj James G. Keppler, Regional Director

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Directorate of Regulatory Operations - Region III-Glen Ellyn, IL 60137 C

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'A Reportable Occurrence Report #81-36/03L-0, Docket #050 s being submitted to your office in accordance with Dresden Nuclear Power Station Technical Specification 6.6.B.2.(b), conditions leading to operation in a degraded mode permitted by a limit.ing condition for operation or plant shutdown required by a limiting condition for operation.

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J. Scott Station Superintendent Dresden Nuclear Power _ Station DJS/kmj Enclosure cc: Director of Inspection & Enforcement Director of Management Information & Program Control U.S. NRC, Document Mgt. Branch File /NRC 8201060495 811123 DR ADOCK 05000

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1. I DEC 2 198l,

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6 60 83 OOCK ET NUM8 ER 68 69 EVENT OATE 74 75 REPOR', ATE 80 EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h 1012 I l While performing Auto Blowdown Permissive surveillance DIS 287-1, pressure switch PS3-l l o l 3 I l 1554E would not operate at required pressure (Tech. Spec. Table 3.2.2). The health and l lo I Ai l safety of the general public was not endangered. Event was of minimal safety signifi-1 Ioisl l cance since redundant pressure switches were operable.

T'ais is the first occurrence ofI l o 16 l l this type l

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SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SU8 CODE COMPONENT CODE SUSCODE SUSCODE lo191 l S l F l@ {@ l B l@ lI lN lS lT lR lU l@ W@ y @

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CODE TYPE NO.

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38 37 40 el 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i i o l l The cause of the failure was a plugged instrument snubber. The snubber was cleaned I

i,3g land the pressure switch operated properly.

DIS 287-1 will continue to be performed l'

,,,,,gmonthly.

No further action considered necessary.

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7 8 9 80 STATUS

% POWER OTH ER STATUS CISCO Y

OfSCOVERY OESCRIPTION I1 l5 I Wh l 0l 6l 1l@l NA l

l B l@l Surveillance Test l

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i i2 is 44 48 48 80 KELEASED OP RELEASE AMOUNT OP ACTIVITY LOCATION OP RELEASE g lZl@ { gl NA l

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7 8 9 to It 44 46 80 PERSONNEL EXPOSURES NL M8ER TYPE

DESCRIPTION

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PERSO~NE L iN;U4 ES NUMSER

DESCRIPTION

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7 8 9 11 12 80 LOSS OP CR DAMAGE TO PACIUTY Q TYPE

DESCRIPTION

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.10 80 PU8LICtTY ISSUED

DESCRIPTION

NRC USE ONLY 12 l a l l u l@l NA l

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