ML17252B533

LER 81-020/03L-0 for Dresden, Unit 2 Re During Refueling Outage LPCI Test Spray Valve Failed to Shut Electrically, One Set of Thermal Contacts Would Not Reset

ML17252B533
Person / Time
Site:	Dresden
Issue date:	02/02/1981
From:	Scott D Commonwealth Edison Co
To:	James Keppler NRC/RGN-III
References
DJS LTR 81-107 LER 81-020/03L-0
Download: ML17252B533 (3)

Text

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... Commonwealt.son ,':

,, Dresden Nuclear Po R.R. #1

. tation

• 1-.. J Morris, Illinois. 60450

-~b Telephone 815/942-2920

.... February 2, 1981 DJS LTR 1/81-107 James G. Keppler, Regional Director Directorate of Regulatory Operations Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, I.L 60137 Reportable Occurrence Report l/81-02/03L-0, Docket 11050-237 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.

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,...._ .. D. J. Scott

• Station Superintendent Dresden Nuclear Power Station DJS:lg Enclosure cc: Director of Inspection & Enforcement Director of Management Information & Program Control U.S. NRC, Document Mgt. Branch File/NRC

NRC FORM 366 * ** u~ S. NUCLEAR REGULATORY COMMISSION 17-771

.ICENSEE EVENT REPORT e

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((ill !During Unit 2 refueling outage LPCI Test Spray yalye failed to shut electrically.

(]:I!] !One set of thermal. contacts would not reset. The safety significance was minimal C2:TIJ I since the valve could be manually shut and the reactor was in cold shutdown. There I l:[TIJ !was no effect on public health or safety. This is the first occurrance of this type

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7 8 9 . 10 11 .12 13 18 19 20 SEQUENTIAL. OCCURRENCE REPORT REVISION

~ L.E A/RO. CV ENT VEAR REPORT NO. COO& TYPE NO.

~ REPORT NUMBER.

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35 LLI 38 lo lo lo lo 37 40 I W@ 41 W@

42 W@

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CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS @

DJ!J !The cause of failure was stuck auxiliary contacts.. The auxiliary contacts. were ITTIJ 1replaced and valve operated prope'r.if>: .. !'fotor Contactor breaker cornpartment.s w.ill II))] !continue to be checked* during outages; per e~ tab lis~e:.;d;;...ip~r:.:o:;.;c::.;e::.;d::.;u::.r:..e=s.:..- - - - - - - . . . - - - _ .

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0 NAMEOFPREPARER--.K_._z_i_rw_a_s_ _ _ _ _ _ _~~--- PHONE: 815-942-2 920 Ext. 422 Q.

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C'a rbriioiiweatth Edison.

• DVR DEVIATION REPORT

.STA D UNIT YEAR 2 - 81- 3 NO.

OCCURRED 1-5-81 1500 c OF LPCI TEST SPRAY VALVE 2-1501-20B. DATE

• TIME SYSTEM AFFECTED 1500 PLANT CONDITIONS TESTING LPC! D IXJ

. MODE SffiJTPOWN PWR MWT * . 0 LOAD MWf.. 0 YES NO DESCRIPTION_ OF EVENT VALVE 2-1501-20B WOULD NQT CLOSE ELECTRICALLY, ONE SET .OF AUXILIARY CONTACTS WOULD NOT DESCRIPTION OF CAUSE IINJ{NQWN AT THIS TIME.

OTHER APPLICABLE INFORMATION REACTOR IN COLD SHUTDOWN, LOW PRESSURE EC_CS NOT ~QlJ.IRED EQUIPMENT rD YES OR NO. WR NO.

. J. Fideler 1/5/81 FAILURE ONO Dl0923 c RESPONSIBLE SUPERVISOR

• DATE

. PART 2 I OPERATING ENGINEERS COMMENTS FAILURE OCCURED WHILE REACTOR WAS IN COLD SHUTDOWN. PRIMARY _CONTAINMENT WAS. NOT . REQUIRED *

. I SAFETY-TYPE OF DEVIATION EVENT OF POTENTIAL TECH SPEC NON-REPORTABLE ANNUAL RELATED REPORTABLE OCCUR~ENCE -PUBLIC INTEREST VIOLATION OCCURRENCE REPORTING WR ISSUED D 14 DAY D 10CFR21 YES {!]* YES ~

. [!] 30 DAY ~~6~'~2~~10N D D D NO D NO D

. REPORTABLE OCCURRENCE ACTION ITEM NO. PROMPT ON-SITE NOTIFICATION NUMBER

- R. H. RAGAN l/7l81 ..

lGCK- 80-02/031.-0 Tl TLE DATE TIME TITLE DATE TIME 24-HOUR NRC NOTIFICATION PROMPT OFF-SiTE NOTIFICATION DTPH F. A. PALMER 1/7/81 4:54 .

REGION I I I DATE TIME Tl TLE DATE TIME DTCi'.1 REGION I I I & DOL CATE TIME Tl TLE DATE TIME RESPONSIBLE COMPANY OFFICER INFORMED OF IOCFR21 TIME CONDITIONS AND THEIR REPORT TO NRC Tl TLE DATE REVIEW AND COMPLETED JOHN WUJCIGA .. l/.6/8L.

OPERATING ENGlN~ER

• DATE ACCEPTANCE BY STATION REVIEW AS REQUIRED D'ATE RESOLUTION APPROVED AND AUTHORIZED FOR DISTRIBUTION