ML16341E582
| ML16341E582 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 03/15/1988 |
| From: | Kirsch D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Shiffer J PACIFIC GAS & ELECTRIC CO. |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8803230062 | |
| Download: ML16341E582 (8) | |
Text
4CCEIZRATED DISalIBUTION DEMONS'ION SYSTEM RECIPIENT ID CODE/NAME PD5 LA ROOD,H INTERNAL: AEOD/DOA AEOD/DSP/TPAB NRR/DEST/ADS7E4 NRR/DOEA/EAB11E NRRLDREP EPB10D 02 4 RGNS FILE 01 COPIES LTTR ENCL 1
0 1
1.
1 1
1 1
1 1
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1 1
1 1
1 1
RECIPIENT ID CODE/NAME PD5 PD AEOD/DSP NRR/DEST/ADE8H3 NRR/DEST/MEB9H3 NRR/DOEA/GCB11A NRR/PMAS/ILRB12 RES/DE/EIB COPIES LTTR ENCL 1
1 1
1 1
1 1
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1 REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:8803230062 DOC.DATE: 88/03/15 NOTARIZED: NO FACIL:50-275 Di'ablo Canyon Nuclear Power Plant, Unit 1, Pacific Ga 50-323 Diablo Canyon Nuclear Power Plant, Unit 2, Pacific Ga
'UTH. NAME AUTHOR AFFILIATION KIRSCH,D.F.
Region 5, Ofc of the Director RECIP.NAME RECIPIENT'AFFILIATION.
SHIFFER,J.D.
Pacific Gas
& Electric Co.
SUBJECT:
Requests addi info re util 860513,0902,1126,870303,0702 6
0914 response to IE Bulletin 85-003.
DISTRIBUTION CODE: IE11D COPIES RECEIVED: LTR l
ENCL 1 SIZE: 3 TITLE: Bulletin Response (50 DKT)
NOTES:
DOCKET 05000275 05000323 R
I D
S.
A D
D S
EXTERNAL: LPDR NSIC 2
2 1
1 NRC PDR 1
1 TOTAL NUMBER OF COPIES REQUIRED:
LTTR 20 ENCL 19
MAR 15
.1888 Docket Nos. 50-275 and 50-323 A
Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, California 94106 Attention:
J.
D. Shiffer, Vice President Nuclear Power Generation Gentlemen:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION DIABLO CANYON UNITS 1 AND 2
RESPONSE
TO IEB 85-03 Pacific Gas and Electric Company's letters of May 13, September 2, and November 26,
- 1986, and March 3, July 2, and September 14, 1987, pertaining to Diablo Canyon Units 1 and 2, contained their response to IEB 85-03, "Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings."
The review of the responses indicates the need for additional information before the program to assure valve operability can be approved.
The specific information necessary for the completion of our review is enclosed.
- Further, we request that you submit the additional information within one month of the date of this letter.
Sincerely, (Scv;~M Denni4 F. Kirsch, Director Division of Reactor Safety and Projects
Enclosure:
As stated.
cc w/enclosure:
S.
M. Skidmore, PG&E J.
D. Townsend, PG&E (Diablo Canyon)
R.
F. Locke, PG&E D. Taggart, PG&E (Diablo Canyon)
R. Weinberg, PG&E (Diablo Canyon)
T. L. Grebel, PG&E (Diablo Canyon)
State of CA PLlR ADOCK 050002 9
~C
t4AR
~ 5 1988 bcc w/enclosure:
RSB/Document Control Desk (RIDS)
( IE01)
D. Persinko, NRR R. J. Kiessel, NRR H. Rood, NRR IE Bulletin File:
85-03 Project Inspector Resident Inspector G.
Cook B. Faulkenberry J. Martin Docket File bcc w/o enclosure:
LFMB M. Smith Region V
YES /
NO D
DR YES /
NO DFKirsch 3/IJ5T/88
f
Pa 1 of 1
REQUEST FOR ADDITIONAL INFORMATION (RAI) RE:
Review of Responses to Action Item e of IE Bulletin 85-03 Licensee:
Pacific Gas and Electric Company 77 Beale Street San Francisco, California 94106 Unit(s): Diablo Canyon 1,2 Date of Response:
05-13-86 09-02-86
+11-26-86
%03-09-87
~~07-02-87 09-14-87
+(Unit 1)
~~(Unit 2)
Respondent:
J.
D. Shiffer, Vice President, Nuclear Power Generation The information provided in your response to Action Item e of IE Bulletin 85-03 was found to be deficient in some areas.
Provide the additional information necessary to resolve the following comments and questions:
1.
Has water hammer due to valve closure been considered in the determination of pressure differentials?
If not, explain.
- 2. Unl'isted MOVs FCV-436 and FCV-437 are shown normally closed in suction lines from the essential service water system to the AFW pumps, in the lower left corner of Drawing 102003, Revision 31.
Similar valves HV 30 and HV 33 are identified on Page 27 of the WOG Report of March 1986.
Revise the response of 09-02-86 to include these
- valves, or justify their exclusion.
As required by Action Item a of the bulletin, assume inadvertent equipment operations.
3.
The proposed program for action items b,
c and d of the bulletin is incomplete.
Provide the following details. as a
minimum:
(a) commitment t'o a training program for setting switches and maintaining valve operators, (b) commitment to justify continued operation of a valve determined to be inoperable, and (c) consideration of applicable industry recommendations in the preparation of procedures to ensure maintenance of switch settings.
l,