ML18143A487
| ML18143A487 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/06/1976 |
| From: | White L Rochester Gas & Electric Corp |
| To: | O'Reilly J NRC Region 1 |
| References | |
| Download: ML18143A487 (3) | |
Text
D"M;:;",'.~~/ ',.:;.I ROCHESTER GAS AND ELECTRIC CORPOPATION
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89 EAST AVEHUE, ROCHESTER, N.Y. 14649 1044 41ATC LEON D. WHITE. JR.
v>cc nncsiocNr VttCPHOVt anti coot v>c, 546.2700 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue
>>ing of Prussia, Pennsylvania 19406 February '6, 197
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Subject:
Reportable Occurrence 76-01 (30-day, report), Containment Purge Supply and Exhaust Valves excessive leak rates during testing.
R. E. Ginna Nuclear Power Plant, Unit No.
1 Docket No. 50-244
Dear Mr. O'Reilly:
In accordance with Technical Specifications, Article 6.9.2b, the attached report of Reportable Occurrence 76-01, 30-day, is hereby submitted.
Two additional copies of this letter and the attachment'are enclosed.
Very truly yours, L. D. White, Jr.
Attachment cc: Mr. John G. Davis (30)
Mr. William G. McDonald (3) y Il u~~>
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LNSEE EVENT REPORT CONTROL BLOCK:
1 LICENSEE NAME
[op1]NYREG100 7
89 14 15 AEPOAT REPORT CATEGORY TYPE SOURCE IoO~) oooo~
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5 7
= 8 57 58 59 60 61 LCFNSE NUMBEA 0
0 0
0 0 0 0
DOCKET NUMBER 0 0 2
4 4
0 68 69 LICENSE TYPE 4
1 1
1 1
30 EVENT DATE 1
1 1
7 6
0 74 75 EVENT TYPE
~os 31 32" AEPOAT DATE 2
0 6
7 6
80 fPLEASE PRINT ALLREDIUIAEDISFORMATION3 EVENT DESCRIPTION Jog During surveillance test prior to heatu CV ur e su l
and exhaust valves leaked 7
8 9 80
[QD3] excessivel Rubber seat ad ustment shoes were reali ned and leak rates returned to 7
8 9 80
[Q acceptable levels.
Excessive leakage from between the purge exhaust valves was 7
8 9 80
@pi reported on February 14, 1974 and November 19, 1974.
(Reportable Occurrence 76-01, 80 30-day) 7 8 9 SYSTEM CAUSE CODE CODE
[on~] ~SD F
V 7
8 9 10 11 12 CAUSE OESCRIPTION Qpg Possible cause is COMPONENT CODE PAME COMPONENT SUPPUER A
L V
E X
A 17 43 COMPONENT MANUFACTURER P
3 4
0 47 VIOLATION 48 80 low ambient temperature during shutdown.
It has been found that leak 7
8 9 80 Qpg age checks and adjustments have been necessary after extended operation of purge 7
8 9 80
~10 system; the valves have always performed satisfactorily(cont'd.under Additional Factors)
OTHER STATUS AMOUNT OF ACTIVITY OFFSITE CONSEQUENCES 7
89 FACILITY STATUS
% POWER
~a Loaoo J 7
8 9
10 12 13 FOAM OF ACTIVITY CONTENT RELEASED OF AELEASE Q~g s
s NA 7
8 9
10 11 PERSONNEL EXPOSURES NUMBEA TYPE DESCRIPTION
~o ~oo o
~o NA 7
8 9 11 12 13 PERS'ONNEL INJURIES
[isa] ~00 0
7 89 11 12 METHOD OF DISCOVERY 44 45 46 44 45 NA DISCOVERY DESCRIPTION LOCATION OF RELEASE 80 80 80 80 7
89 LOSS OR OAMAGE TO FACILITY TYPE DESCAIPTION Q~g z
7 89 10 PUBLICITY 80 80 7
89 AOOITIONAL FACTORS Q~g (cont'd. from Cause Description) during power operation.
An investigation for replace-7 89 Qg ment seat material has been initiated.
These are Henry Pratt 48" butterfly valves.
80 7
89 NAME:
. C. Noon 80 PHoNE. 716/546-2700, ext. 291-21S GPO 66'I 667