ML16342E228
| ML16342E228 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 08/19/1998 |
| From: | Howell A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| Shared Package | |
| ML16342E229 | List: |
| References | |
| 50-275-98-09, 50-275-98-9, 50-323-98-09, 50-323-98-9, A-98-364, NUDOCS 9808240236 | |
| Download: ML16342E228 (12) | |
See also: IR 05000275/1998009
Text
CATEGORY 2
'REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
c>'CCESSION NBR:9808240236
DOC.DATE: 98/08/19
NOTARIZED: NO
DOCKET ¹
FACIL:50-275 Diablo Canyon Nuclear
Power Plant, Unit 1, Pacific
Ga
05000275
~
~
~
50-323 Diablo Canyon Nuclear
Power Plant, Unit 2, Pacific
Ga
05000323
AUTH.NAME
AUTHOR AFFILIATION
OWELL,A.T.
Region
4 (Post
820201)
RECIP.NAME
RECIPIENT AFFILIATION
RUEGER,G.M.
Pacific Gas
& Electric Co.
SUBJECT:
Forwards insp repts 50-275/98-09
'& 50-323/98-09
on
980505-0721
&. notice of violation.Insp reviewed four
'potential unreviewed safety questions
associated
w/component
cooling water, auxiliary saltwater
DISTRIBUTION CODE: IEOIF
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SIZE: 5+X~
TITLE: General
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UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION IV
611 RYAN PLAZADRIVE. SUITE 400
ARLINGTON.TEXAS 76011.6064
August 19, 1998
j
A 98-364
Gregory M. Rueger, Senior Vice President
and General Manager
Nuclear Power Generation Bus. Unit
Pacific Gas and Electric Company
Nuclear Power Generation, B14A
77 Beale Street, Room 1451
P.O, Box 770000
San Francisco, California 94177
SUBJECT: NRC INSPECTION REPORT 50-275/98-09; 50-323/98-09 AND NOTICE OF
VIOLATION
Dear Mr. Rueger:
An onsite special inspection was conducted from May 5-7, 1998, to review four potential
unreviewed safety questions associated with component cooling water, auxiliary saltwater and
residual heat removal system modifications and procedure revisions for your Diablo Canyon
Nuclear Power Plant, Units 1 and 2, reactor facilities. Additional NRC staff review of these
issues was conducted through July 21, 1998. The enclosed report presents the scope and
results of that inspection.
A telephone exit was conducted with Mr. Womack and other
members of your staff regarding these issues on July 21, 1998.
The NRC noted that the 10 CFR 50.59 program was not effectively utilized in these cases to
determine whether a proposed design or procedural change represented
a potential unreviewed
safety question or affected the technical specifications.
Design and procedural changes utilized
the 10 CFR 50.59 process as a means of validating design and procedural changes, but did not
correctly provide a licensing basis determination.
The NRC staff did find that the modifications
implemented and procedure revisions were initiated to correct conditions which had resulted in
degraded system conditions or could have resulted in potential operation outside the design
basis.
None of the modifications or procedure revisions resulted in an increase in the
probabilistic risk to the plant.
Two violations are cited in the enclosed Notice of, Violation (Notice) and the circumstances
surrounding these violations are described in detail in the enclosed report. These violations are
of concern because
the regulatory aspects of design and procedure changes were not
appropriately addressed
in the licensing design basis reviews to determine if an unreviewed
safety question was involved or whether the technical specifications were impacted.
Please
note that you are required to respond to this letter and should followthe instructions specified in
the enclosed Notice when preparing your response.
The NRC will use your response,
in part,
to determine whether further enforcement action is necessary
to ensure compliance with
regulatory requirements.
9808240236
'780819
ADOCK 05000275
8
C
Pacific Gas and Electric Company
-2-
In accordance with 10 CFR 2.790 of the NRC's "Rules of Practice," a copy of this letter, its
enclosure(s), and your response will be placed in the NRC Public Document Room (PDR) ~ To
the extent possible, your response should not include any personal privacy, proprietary, or
safeguards information so that it can be placed in the PDR without redaction.
Docket Nos.:
50-275; 50-323
Sincerely,
Arthur T. Howell III, Director
Division Reactor Safety
Enclosures:
1.
2.
NRC Inspection Report
50-275/98-09; 50-323/98-09
cc w/enclosures:
Dr. Richard Ferguson
Energy Chair
1100 lith Street, Suite 311
Sacramento,
California 95814
Ms. Nancy Culver
San Luis Obispo Mothers for Peace
P.O. Box 164
Pismo Beach, California 93448
Chairman
San Luis Obispo County Board of
Supervisors
Room 370
County Government Center
San Luis Obispo, California 93408
Mr. Truman Burns)Mr. Robert Kinosian
California Public Utilities Commission
505 Van Ness, Rm. 4102
San Francisco, California 94102
h
Pacific Gas and Electric Company
-3-
Robert R. Wellington, Esq.
Legal Counsel
Diablo Canyon Independent Safety Committee
857 Cass Street, Suite D
Monterey, California 93940
Mr. Steve Hsu
Radiologic Health Branch
State Department of Health Services
P.O. Box 942732
Sacramento,
California 94234
Christopher J. Warner, Esq.
Pacific Gas and.Electric Company
P.O: Box 7442
San Francisco, California 94120
Robert P. Powers, Vice President
and Plant Manager
Diablo Canyon Power Plant
P.O. Box 56
Avila Beach, California 93424
Managing Editor
Telegram-Tribune
1321 Johnson Avenue
P.O. Box 112
San Luis Obispo, California 93406
Pacific Gas and Electric Company
-4-
E-Mail report to T. Frye (TJF)
E-Mail report to D. Lange (DJL)
E-Mail report to NRR Event Tracking System {IPAS)
E-Mail report to Document Control Desk {DOCDESK)
bcc to DCD (IE01)
bcc distrib. by RIV:
Regional Administrator
DRP Director
Branch Chief (DRP/E, WCFO)
Senior Project Inspector (DRP/E, WCFO)
Branch Chief (DRP/TSS)
WCFO File
G. F. Sanborn, EO
W. L. Brown, RC
J. Lieberman, OE, MS: 7-H5
OE:EA File, MS: 7-H5
Resident Inspector
DRS-PSB
MIS System
RIV File
DOCUMENT NAME: R:+DC'tDC809RP.WBJ
To receive co
of document, indicate ln box: "C" = Co
without enclosures
"E" = Co
with enclosures "N" ~ No co
RIV:SRA
N
DRP/E:PE
C:DRP/E
D:DRS
WBJones*
Bolson
E Mail * HWon
E Mail * GFSanborn*
ATHo
08/04/98
08/11/98
08/l2/98
08/13/98
OFFICIALRECORD COPY
08
98
Pacific Gas and Electric Company
-4-
E-Mail report to T. Frye (TJF)
E-Mail report to D. Lange (DJL)
E-Mail report to NRR Event Tracking System (IPAS)
E-Mail report to Document Control Desk (DOCDESK)
bcc to, DCD (IE01)
bcc distrib. by RIV:
Regional Administrator
DRP Director
Branch Chief (DRP/E, WCFO)
Senior Project Inspector (DRP/E, WCFO)
Branch Chief (DRP/TSS)
WCFO File
G. F. Sanborn, EO
W. L. Brown, RC
J. Lieberman, OE, MS: 7-H5
OE:EA File, MS: 7-H5
Resident Inspector
DRS-PSB
MIS System
RIV File
DOCUMENT NAME: R:4 DC'~DC809RP.WBJ
To receive co
of document, indicate in box: "C" ~ Co
without enclosures
"E" = Co
with enclosures "N" = No co
RIV:SRA
N
DRP/E:PE
C:DRP/E
D:DRS
WBJones"
Bolson
E Mail * HWon
E Mail
GFSanborn*
ATHo
08/04/98
08/11/98
08/12/98
08/13/98
OFFICIAL RECORD COPY
08
98