ML18142A877

LER 1978-007-01 for R.E. Ginna, Bus 14 Breaker for C Safety Injection Pump

ML18142A877
Person / Time
Site:	Ginna
Issue date:	06/06/1978
From:	White L Rochester Gas & Electric Corp
To:	Grier B NRC/IE, NRC Region 1
References
LER 1978-007-01
Download: ML18142A877 (4)

Text

K5fN55 MMG'lkNP7 ROCHESTER GAS AND ELECTRIC CORPORATION ~ 89 EAST AYEHUE, ROCHESTER, H.Y. 14649 LEON O. WHITE. JR, T c i. c ff ffa w E VICE PRESIDENT ifFr ~ casa .Fr 546.2700 June 6, 1978 ncaa CD C C

crI Cr= f I"F C'

Mr. Boyce H. Grier, Director I 'l I'FI U. S. Nuclear Regulatory Commission ~ CF1 n ncrF c A1 Office of Inspection and Enforcement Region I (n re 631 Park Avenue fTl CJ1 King of Prussia, Pennsylvania 19406

Subject:

Supplemental report on Reportable Occurrence 77-007/03L, Bus 14 breaker for "C" Safety Injection Pump R. E. Ginna Nuclear Power Plant, Unit No. 1 Docket No. 50-244

Dear Mr. Grier:

The attached update report LER 77-007/03X-1 provides additional information obtained during the investigation connected with the subject event.

Two additional copies of this letter and the attachment are enclosed to conform to the original submittal of LER 77-007/03L-O.

Very truly yours,

/ I L. D. White, r.

- Attachment cc: Dr. Ernst Volgenau (30)

Mr. William G. McDonald (3) 7eg 6gpp

~~J

NRC I7.77)

F(AM 366 LER 77-007/03X-l~ate Report LICENSEE EVENT REPORT Previous Reporf ~z 7)27777" (CAR 1132)

CONTROL BLOCK: QI (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6

~OI N Y R E G 1 Qgp 0 - 0 0 0 0 0 - 0 0Q34 1 1 1 1 OR~Os 7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 26 LICENSE TYPE 30 57 CAT 58 CON'T

~RT,""~LQg p 6 p p p 2 4 4 68 T

69 0 6 2 EVENT DATE 9 7 7 74 s

75 0 6 0 6 7 8 80 Qs 7 8 60 61 DOCKET NUMBER REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 During test C SI pump failed to start from bus 14 breaker on 2 attempts. The pump was successfully'ith started the bus 16 breaker ~ Subsequently bus 14 breaker started

~o4 pump su cce s s fully ~ This incident is s imilar to 7 events involving the bus 16 breaker

~O6 and 1 event with the bus 14 breaker ~ Replacement breaker was tested and installed.

~OB

~OB 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~SF G'ROPE ~XOTE C " R X 04 ~AOEE MZ 0' 7 8 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT R EV I SION QTT LER3ERO REPoRT ACTION FUTURE EVENT YEAR

~77 21 22 EF F ECT

+

23 SHUTDOWN

~00 24 REPORT NO.

7 26

+W 27 ATTACHMENT

~03 28 CODE 29 NPRDQ TYPE

+X 30 PRIME COMP.

+1 NO.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

~AQs~ZOEE ~Zoo LZJOE 0 0 0 0 L~IO33 ~YOE ~NOEE W 1 2 0 Ogs 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 NA Inspection of circuit breaker revealed no a arent cause for failure.

o Circuit breaker is Westinghouse Model DB-50, 600 V A.C. 't was returned to Westing-house for further investigation. Westinghouse reported that, as received, breaker was 3 in good condition except for a missing bell alarm spring and a bent ground contact ~

After replacing these, breaker was tested without any failures and returned.

7 8 9 80 METHOD OF FACILITY STATUS  % POWER OTHER STATUS Pj

~3O DISCOVERY DISCOVERY DESCRIPTION Q32 CE31 5 ~E p3 8 ~10 0 p3 8 NA ~BOEE Test 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT 0

RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Q36 7

6 8 9 Z Q33 10 Z

Q 11 NA 44 45 NA 80 PERSONNEL EXPOSURES NUIPIBER TYPE DESCRIPTION Q39

~E1T7 L00 0

~ 0

~ IQ3 3 Z Q3 8 NA 7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION Q41 8 ~00 0 QER NA 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE 43 DESCRIPTION Z Q42 NA 8 9 10 80 PUBLICITY o

ISSUED

~NQ44 DESCRIPTION Q NA NRC USE ONLY 7 8 9 10 68 69 80 ER NAME OF PREPARER J. C. Noon PHDNE 7 1 6-546-2700, ext ~ 29 1-2 1 5

n 4