ML20039E071

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: ML20039E071 ML20039E074
References
81-930, NUDOCS 8201060495
Download: ML20039E071 (1)

Text

v_.

, 7' Commonwealth Edison

• -~ Dresden Nuclear Power St; tion j- *Q u:.

e--w t R.R. #1 ,

.* 7 - Morris, Illinois 60450 i N ' Telephone 815/942-2920 v

November 23, 1981 DJS LTR #81-930 D g

\

( d.) fN fj James G. Keppler, Regional Director --

Directorate of Regulatory Operations - Region III- ;9 "g{gg ISOIb _ -

U.S. Nuclear Regulatory Commission ggron. Q}, l 799 Roosevelt Raod 'A Glen Ellyn, IL 60137 C '

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.

d D 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 } g .f k DEC 2 198l, # I

^

mm LICENSEE EVENT REPORT i

CONTROL BLOCK: l l l l l l s

i o lh (PLEASE PRINT CR TYPE ALL REQUIRED INPORMATION) to i18 l9l Il LUCENSEE 7 l D l R. CODE l S l143 l@l 15 0 l0 l- l0 uCENSE l0 l0 NUM8ER l0 l0 l - l 0 l 0 l@l 25 4 l 1UCENSE 26 l 1 l1TYPE l 1JOl@l57 CAT l 58l@

CON'T 1","C lolti 7 6 lt @l015 l0 lo l0 l2 l4 l9 @l1l1l0l2l8l1 hl1 l1 I? l1 IO l1 !h 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

10171 l l 10181I I SYSTEM CAUSE CAUSE COMP.

CODE VALVE CODE SU8 CODE COMPONENT CODE SUSCODE SUSCODE lo191 7 8 l S l F l@ {@ l B l@ lI lN lS lT lR lU l@ W@ y @

e 30 it 12 13 i8 is 20

,_ SEQUENTIAL OCCURRENCE REPORT REVISION Lg nf no EVENT YEAR REPORT NO. CODE TYPE NO.

hREP [8 l 1l l-l l0l3l6l l/l l0l3l lL l l-l W

,,,, 21 22 23 24 28 27 28 29 30 31 32 N A O P T MT NOURS 22 S8 1 POR 8. S UE MAN P RER lElg[34Z 33

_ jg l5 3

Z[g g g 38

[0l0l0lvl 37 lN l@ lY l@ lNl@ l44M l 2 l 3 l 547 l@

40 el 42 43 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. I gl l 4

1 i 14 l I l 7 8 9 80 STATUS  % POWER OTH ER STATUS CISCO Y OfSCOVERY OESCRIPTION I1 l5 I Wh l 0l 6l 1l@l NA l l48B l@l Surveillance Test l 7

84 i i2 is 44 48 80 KELEASED OP RELEASE AMOUNT OP ACTIVITY LOCATION OP RELEASE g lZl@

7 8 9

{ gl to NA l l 46 NA l It 44 80 PERSONNEL EXPOSURES NL M8ER TYPE DESCRIPTION l i 171 10 l 0 l 0 l@l' Z l@l NA l

PERSO~NE L iN;U4 ES NUMSER DESCRIPTION l1 lall0l0l0l@l 7 8 9 11 12 NA l 80 LOSS TYPE OP CR DAMAGE TO PACIUTY Q DESCRIPTION N,/

L'_W8 9l Z l@l.10 7

NA l 80 PU8LICtTY ISSUED DESCRIPTION NRC USE ONLY

• 12 l a l l u l@l NA l llllllllllllli l 7 8 3 to 68 89 80 3

. as 815-942-2920, Ext. 422 NAME OF PREPARER PHONE: {

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