ML17174A490

Forwards LER 80-009/03L-0

ML17174A490
Person / Time
Site:	Dresden
Issue date:	03/25/1980
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17174A491	List: ML17174A490 ML19322E806
References
80-241, NUDOCS 8004020309
Download: ML17174A490 (2)

Text

Commonweal-dison Dresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 March 25, 1980 BBS LTR /180-241 James G. Keppler, Regional Director Directorate of Regulatory Operations - Region III U. S. Nuclear Regulatory Commission /

/

I 799 Roosevelt Road Glen Ellyn, IL 60137 Reportable Occurrence Report f/80-9/03L-0, Docket._ 11050-249, is 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 limiting condition for operation or .plant shutdown required by a limiting condition for operation. * \

tep e~son.

Station Superintendent Dresden Nuclear Power Station BBS:lcg Enclosure cc: Director of Inspecti.ioir.

Direc.tor of Management InfoEnation & Program Control File/NRC MAi~ 3 1 \980

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.., .ENSEE EVENT REPORT

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• 15 LICENSE NUMBER * . 25 26 LICENSE TYPE :JO 57 CAT 58 CON'T roTtl -~~~ ~Io 15 10 10 10 12 14 19 10)10 13 10 16 1s 10 1©1 o I 3 I 2 Is Is Io I@

~ . _ ... 60 * . 61 *** DOCKET NUMBER ss* 69 ... EVENT DATE 7_4 75 REPORT DATE 80 EVENT DESCRIPTION A~_D.PROBABLE CONSEQUENCES@ .

Jo 121 TDuring-Unit 3 refueling outage, while performing LPCI logic tests, injection valve fo ! JI I MO 3-1501-22A failed to open. Valve did open via remote. control switch.' This is the I 0 14 1*1 first occurrence of this type. *Safety significance ni+/-nimized since the other subsyst~ml I 0 Is I l~ou1d have functione*d as designed, and the valve was capable of b~ing opened from the I 0 !s I I control room.

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. * * . SEQUENTIAL . OCCURRENCE REPORT REVISION

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REPORT NUMBER

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REPORT NO.

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26 *. 27 I0 28 CODE

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TYPE 30 I I 31 NO.

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. ACTION** FUTURE EFFECT SHUTDOWN ** ~ ATTACHMENT .NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION-* *ON PLANT

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• HOURS 22 SUBMITTED .FORM SUB. . SUPPLIER MANUFACTURER ..

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.* CAUSE DESCRiPTION AND CORRECTIVE ACTIONS @

pnvestigation revealed a loose wire on terminal block in MCC-38-7 due to a stripped I 1brass screw. Repface stripped brass screw with*proper type, a,nd replaced lugs on wires I

~** 1term_ inatirig on block_. *This was the only brass 'screw found out of 57 MCC' s checked *

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I 1 f 3 r I Logic test reconducted and MO 3~1501-22A functioned as designed. LPCI logic test will I

~ I continue to be performed every refueli!lg outage ..

• . 8. 9 . . . 80

• FACILITY* f:iQ\ .*.METHOD OF * * ~

. STATUS * .._POWER OTHER STATUS ~- DISCOVERY .

• DISCOVERY DESCRIPTION ~

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ACTIVITY . CONTENT

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44 45 46 80.

~RELEASED OF RE_ LEASE . AMOUNT OF ACTIVITY.~ .

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. LOCATION OF RELEASE @

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• PERSONNEL EXPOSURES. * ~

. NUMBER . . TYPE . DESCRIPTION 39

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11 PERSONNEL INJURIES .

• NUMBER 12

. DESCRIPTION 41 13

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