ML16342A257
| ML16342A257 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 08/17/1993 |
| From: | Miller L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| Shared Package | |
| ML16342A258 | List: |
| References | |
| NUDOCS 9309290170 | |
| Download: ML16342A257 (6) | |
See also: IR 05000275/1993019
Text
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UNITED STATES
NUCLEAR REGULATORYCOMMISSION
REGION V
1450 MARIALANE
WALNUTCREEK, CAUFORNIA94596-5368
'U6>>
~SS3
Docket Nos:
50-275,
50-323
Pacific Gas
and Electric Company
Nuclear Power Generation,
B14A
77 Beale Street,
Room 1451
P.O.
Box 770000
San Francisco,
CA
94177
Attention:
Mr. G.
M. Rueger
Senior Vice President
and General
Manager
SUBJECT:
DIABLO CANYON MOV INSPECTION
NRC INSPECTION REPORT 93-19
,!
This refers to the inspection
conducted. by Messrs.
C. Myers,
and
M. Runyan
during the period of July 19-23,
1993.
The inspection consisted of a review
of activities authorized for your Diablo Canyon facility.
At the conclusion
of the inspection,
the findings were discussed
with Mr. J.
Townsend
and other
members of your staff.
This inspection
examined the implementation of the ptogram which you have
developed in response
"Safety-Related
Motor-Operated
Valve Testing
and Surveillance."
The inspection consisted of interviews with
personnel
and selective examination of records
and procedures.
We concluded
that the implementation of your motor-operated
valve program was generally in
accordance
with your commitments to Generic Letter 89-10.
The report discusses
a concern associated
with the auxiliary feedwater control
valve 2-LCV-109.
Despite having completed your GL89-10 program to assure
the
capability of the
MOV to operate
under worst case
design basis conditions, the
MOV subsequently
failed to open during routine surveillance testing.
We are
concerned that your initial corrective actions did not identify the root cause
for the failure prior to returning the
MOV to service nor assess
the
implications of the failure on the adequacy of your
MOV program.
The
objective of the GL89-10 program is to assure that
common mode deficiencies
in
the design
and maintenance
of MOVs have
been recognized
and corrected.
Deficient
MOV performance
should receive particular attention to assure that
your program is comprehensive
and effective.
In accordance
with 10 CFR Part 2.790 of the'NRC's
"Rules of Practice,"
a copy
of this letter
and its enclosure will be placed in the
NRC Public Document
Room.
9309290170
9308)7
ADOCK 05000275
8
PD9
Should you have
any questions
concerning this inspection,
we will be pleased
to discuss
them with you.
Sincerely,
L. F. Niller, Jr., Chief
Reactor Safety Branch
Enclosure:
NRC Inspection Report
50-272/93-19
50-323/93-19
CC:
Dr. Richard Ferguson,
Energy Chair, Sierra Club California
Ns. Nancy Culver,
San Luis Obispo Nothers for Peace
Ns. Jacquelyn
C. Mheeler
Nanaging Editor, The County Telegram Tribune
Chairman,
San Luis Obispo County Board of Supervisors
Nr. Truman Burns, California Public Utilities Commission
Nr. Robert Kinosian, California Public Utilities Commission
Robert
R. Wellingt'on, Esq., Diablo Canyon Independent
Safety Committee
Nr. Steve
Hsu, Radiologic Health Branch, State
Department
of Health Services
Nr. Peter
H. Kaufman, Deputy Attorney General,
State of California
Christopher J. Marner, Esq.,
Nr. John Townsend,
Vice President
and Plant Nanager,
Diablo Canyon
bcc w/enclosure:
Docket File.
Resident
Inspector
Project Inspector
G. Cook
B. Faulkenberry
K. Perkins
S. Richards
J. Norberg,
T. Sullivan,
T. Scarbrough,
J. Durr, RI
C. Julian, RII
G. Wright, RIII
T. Westerman,
RIV
M. Runyan,
RIV .
M. Holbrook,
EGEG Idaho
T. Quay,
bcc w/o enclosure:
M. Smith
J. Zollicoffer
AUG
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