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

{{#Wiki_filter:----... ,, l i 1 ' e Commonwealt.son ,': Dresden Nuclear Po . tation R.R. #1 Morris, Illinois. 60450

• J Telephone 815/942-2920 1-.. .... 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 * ()s6 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. Ii#'\* DJS:lg Enclosure

,...._ .. ;:: LJj}_uif-c D. J. Scott

• Station Superintendent Dresden Nuclear Power Station cc: Director of Inspection

& Enforcement Director of Management Information & Program Control U.S. NRC, Document Mgt. Branch File/NRC NRC FORM 366 17-771 * ** S. NUCLEAR REGULATORY COMMISSION .ICENSEE EVENT REPORT e ltONTROL BLOCK: l I I I I 10 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI ,;; .. CJ 1 6 . ; l2:TIJ I I I LID IR I s I 2 101 0 I 0 I -I 0 I 0 I 0 I 0 I 0 I -I 0 I 01014 11 11 11 11 101 I I© .

• 8 9 L.ICENSEE CO.OE ... 14 15* L.ICENSE NUMBER
• 25 2B L.ICENSE TYPE . JO 57 CAT 58 Wn [ill]

W©I o Is I 0-1 *o Io I 2 I 3 I 1 l(?)I ol ii ol sl al 11@!0 1*1I2 I 9 I a I 1 I@ ' 7 8 60 61 DOCKET NUMBER 6B 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION PROBABLE CONSEQUENCES @ . * [[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 [[TI] lfor this valve I . [ill] ] !continue to be checked* during outages; per tab

---

...---_.

Cilil 7 8 9 FACIL.ITY t3i)\ METHOO OF . . STATUS % POWER OTHER STATUS i..::::J* OISCOVERV OISCOVERV OESCRIPTION [ill] l!!J@ I 0 I 0 I 0 l@I .... * --=N...,/A....._ __ _.I LA..J@I Operator. Obseryation .. 7 8 9 10 12* 1'.3 44 45 . 46 . . . ACTIVITY CONTENT t:::;\ REL.EASED OF REL.EASE AMOUNT OF ACTIVITY [ill] LI@I . N/A 7 8 9 10 11 80 80 44 45 L.OCATION OF REL.EA$E @ N/A 80 PERSONNEL. EXPOSURES r.:;;.., NUMBER DESCRIPTION [ill] I ol ol 7 8 9 11 12 13 PERSONNEL. INJURIES I::\ NUMBER DESCRIPTION6

• rr:I:TI IO IO IO 7 8 9 11 12 . L.OSS OF OR DAMAGE TO FACIL.ITY

'4J' TYPE DESCRIPTION i,;:;;:; 9 l.Ll@ . . . . 80 80 N/A. 7 8 9 10 . 80 . NRC USE ONL y "' IIIIJ ......... I I I I I I I I I I I I 7 8 9 . 10 68 69 NAMEOFPREPARER--.K_._z_i_rw_a_s _______ PHONE: 815-942-2 920 Ext. 422 0 Q. " e C'a rbriioiiweatth Edison. -* DVR *l* .. . ---. ....... . ........ ********* -. -..... *-..... . DEVIATION REPORT .STA UNIT YEAR NO. D-12 81-3 OCCURRED 1-5-81 OF LPCI TEST SPRAY VALVE 2-1501-20B. DATE

• 1500 c TIME SYSTEM AFFECTED 1500 PLANT CONDITIONS LPC! . MODE SffiJTPOWN PWR MWT * . 0 LOAD MWf.. 0 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 EQUIPMENT rD YES OR NO. FAILURE ONO WR NO. Dl0923 . J. Fideler RESPONSIBLE SUPERVISOR

• TESTING D IXJ YES NO 1/5/81 DATE c . 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 -PUBLIC INTEREST VIOLATION OCCURRENCE REPORTING WR ISSUED D 14 DAY D 10CFR21 YES {!]* YES . [!] 30 DAY D D D NO D NO D . REPORTABLE OCCURRENCE ACTION ITEM NO. PROMPT ON-SITE NOTIFICATION NUMBER l/7l81 -R. H. RAGAN . Tl TLE DATE TIME . :lGCK-80-02/031.-0 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 c REGION I I I & DOL CATE TIME Tl TLE DATE TIME RESPONSIBLE COMPANY OFFICER INFORMED OF IOCFR21 CONDITIONS AND THEIR REPORT TO NRC Tl TLE DATE TIME c REVIEW AND COMPLETED ACCEPTANCE BY STATION REVIEW AS REQUIRED D'ATE RESOLUTION APPROVED AND AUTHORIZED FOR DISTRIBUTION JOHN WUJCIGA .. OPERATING

• l/.6/8L. DATE}}