05000244/LER-2078-007-01, 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) | |
| Event date: | |
|---|---|
| Report date: | |
| 2442078007R01 - NRC Website | |
text
K5fN55MMG'lkNP7 ROCHESTER GAS AND ELECTRIC CORPORATION
~
89 EAST AYEHUE, ROCHESTER, H.Y. 14649 LEON O. WHITE. JR, VICE PRESIDENT Tc i.c ffffa w E ifFr ~ casa
.Fr 546.2700 June 6, 1978 Mr. Boyce H. Grier, Director U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 CD crI C'
I'l n crFn re(n fTl CJ1 C
C Cr= f I"F ncaa I'FI~ CF1 c
A1
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 F(AM 366 I7.77)
LER 77-007/03X-l~ate Report Previous Reporf ~z 7)27777" LICENSEE EVENT REPORT (CAR 1132)
CK:
QI (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)
I 6
G 1 Qgp 0 -
0 0
0 0
0 0 0Q34 1
1 1
1 OR~Os 14 15 LICENSE NUMBER 26 LICENSE TYPE 30 57 CAT 58 CONTROL BLO
~OI N Y R
E 7
8 9
LICENSEE CODE CON'T
~RT,""~LQg p
6 p
p p
2 4
4 T
0 6
2 9
7 7
s 0
6 0
6 7
8 Qs 7
8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 During test C SI pump failed to start from bus 14 breaker on 2 attempts.
The pump was started successfully 'ith the bus 1 6 breaker
~
Subsequently bus 1 4 breaker started
~o4 pump su cce s s fully~
This incident is s imilar to 7 events involving the bus 1 6 breaker
~O6 and 1 event with the bus 14 breaker
~
Replacement breaker was tested and installed.
~OB
~OB 7
8 9
80 7
8 SYSTEM
CAUSE
CAUSE COMP.
VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE
~SF G'ROPE
~XOTE C " >>
R X 04
~AOEE MZ 0' 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT R EV I SION LER3ERO EVENT YEAR REPORT NO.
CODE TYPE NO.
QTT REPoRT
~77
+
~00 7
+W
~03
+X
+1 21 22 23 24 26 27 28 29 30 ACTION FUTURE EF F ECT SHUTDOWN ATTACHMENT NPRDQ PRIME COMP.
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 o
NA Inspection of circuit breaker revealed no a arent cause for failure.
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.
CE3 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY 6
Z Q33 Z Q NA 7
8 9
10 11 44 PERSONNEL EXPOSURES NUIPIBER TYPE DESCRIPTION Q39
~E1T7 L000
~0
~0 IQ33 Z Q38 NA 7
8 9
11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION Q41 8 ~00 0
QER NA 7
8 9
11 12 LOSS OF OR DAMAGE TO FACILITY 43 TYPE
DESCRIPTION
Z Q42 NA 8
9 10 PUBLICITY ISSUED DESCRIPTIONQ o
~NQ44 NA 7
8 9
10 45 NAME OF PREPARER J. C. Noon 7
8 9
FACILITY
~3O METHOD OF STATUS
% POWER OTHER STATUS Pj DISCOVERY 1
5
~E p38 ~10 0
p38 NA
~BOEE 8
9 10 12 13 44 45 46 Test DISCOVERY DESCRIPTION Q32 80 LOCATIONOF RELEASE Q36 NA 80 80 80 80 NRC USE ONLY 80 68 69 80 ER PHDNE 7 1 6-546-2700, ext ~
2 9 1-2 1 5
n 4