ML16342A381
| ML16342A381 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 01/12/1994 |
| From: | Richards S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| Shared Package | |
| ML16342A382 | List: |
| References | |
| GL-89-13, NUDOCS 9402020066 | |
| Download: ML16342A381 (6) | |
See also: IR 05000275/1993036
Text
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UNITED STATES
NUCLEAR REGULATORYCOMMISSION
REGION V
1450 MARIALANE
WALNUTCREEK, CALIFORNIA94596-5368
January
12,
1994
Pacific Gas
and Electric Company
Nuclear Power Generation,
B14A
77 Beale Street,
Room
1451
P. 0.
Box 770000
San Francisco,
California 94177
Attention:
Hr.
G.
H. Rueger,
Senior Vice President
and General
Hanager
Nuclear
Power Generation
Business
Unit
Subject:
NRC
INSPECTION
REPORT
NOS. 50-275/93-36
AND 50-323/93-36
This refers to the routine,
announced,
inspection
conducted
by Hr. Paul
P.
Narbut during the period from December
13 through December
17,
1993.
The
inspection
examined your activities
as authorized
by
NRC License
Nos.
and
At the conclusion of the inspection,
the inspector discussed
the
inspection findings with Hr. John
Townsend
and other members of the
PGSE
staff.
i
The inspection
reviewed
PGKE's activities performed in response
"Service Water System
Problems Affecting Safety-Related
- Equipment,"
issued
on July 18,
1989.
Areas
examined during this inspection
are described
in the enclosed
inspection report.
Within these
areas,
the
inspection consisted
of selective
examinations of procedures
and
representative
records,
interviews with personnel,
and observations
by the
inspectors.
The inspection report identifies several
unresolved
items regarding the
operability of the Auxiliary Salt Water
(ASW) system
and your management
and
communication of those issues.
The most significant of these
unresolved
items
involved:
(1) the basis for the operability of the
ASW system with regards
to
your operational limits on macrofouling, microfouling,
and tube plugging;
(2)
the timeliness of your corrective actions in resolving each of the
ASW
operability issues
identified by your guality Assurance
Department
in Hay 1993
and the effect of each of those
issues
on
ASW operability;
and
(3) the
accuracy
and completeness
of your response
to Generic Letter 89-13 regarding
heat exchanger testing results
and the existence of a routine
ASW piping
system inspection
program.
We are concerned
that these
unresolved
items call
into question the basis for long-term operability of the
ASW system.
We note
that subsequent
to the end of the inspection
you made
a
10 CFR 50.72 report
on
December
30,
1993,
which reported
past inoperability of the
ASW system.
However,
we remain concerned that the extent of the impact of these
issues
upon the future operability of the
ASW system is not fully understood.
Our concern
regarding
the
adequacy of the
ASW system
has
been previously
evidenced
by the special
analysis
requested
in 1988 in
NRC Inspection
Report
50-275/88-11.
PGSE responded
to those
concerns with assurances
that the
ASW
system
had adequate
margin.
Despite these
assurances, it is discouraging
to
9402020066
940112
ADOCK OS000275
8
,
'
now identify that the testing requested
by Generic Letter 89-13 resulted in
failures that were apparently not thoroughly explored
and resolved
by your
technical
and management staff.
We will continue to review these
concerns
in
a future inspection.
You are
encouraged
to perform
a detailed evaluation of the past
and future operability
of the
ASW system
and promptly evaluate
the effects of these
unresolved
issues.
In order to assist
in our evaluation of these
issues,
we request that
you inform us of the steps that you will take to resolve these
concerns
and
provide us the results of your technical
evaluations
in thirty days
from the
date of this letter.
In accordance
with 10 CFR 2.790(a),
a copy of this letter, the enclosure,
and
your response will be placed in the
NRC Public Document
Room.
Should you have
any questions
concerning this inspection,
we will be pleased
to discuss
them with you.
Sincerely,
S. A. Richards,
Acting Director,
Division of Reactor Safety
and Projects
Enclosure:
1.
Inspection
Report
Nos. 50-275/93-36
and 50-323/93-36
cc w/enclosures:
Dr. Richard Ferguson,
Energy Chair, Sierra
Club California
Hs.
Nancy Culver,
San Luis Obispo Hothers for Peace
Hs. Jacquelyn
C. Wheeler
Hanaging Editor,
The County Telegram Tribune
Chairman,
San Luis Obispo County Board of Supervisors
Hr. Truman Burns, California Public Utilities Commission
Hr. Robert Kinosian, California Public Utilities Commission
Robert
R. Wellington, Esq.,
Diablo Canyon
Independent
Safety Committee
Hr. Steve
Hsu, Radiologic Health Branch,
State
Department
of Health Services
Hr. Peter
H. Kaufman,
Deputy Attorney General,
State of California
Christopher J.
Warner,
Esq.,
Hr. John
Townsend,
Vice President
and Plant Hanager,
Diablo Canyon
0
-3-
bcc w/copy of enclosures
1,
2,
and 3:
Docket File
Project Inspector
Resident
Inspector
S. Richards
R.
Huey
P.
Johnson
S. Peterson,
G.
Cook
J.
Tatum,
E.
Imbro,
bcc w/copy o'f enclosures
1 and 2:
N. Smith
J. Bianchi
D. Clevenger
cc (electronically):
D. Sullivan,
ILPB,
P. Narbut
P.
Johnson
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