ML17306A830
| ML17306A830 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 06/29/1992 |
| From: | Richards S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| Shared Package | |
| ML17306A831 | List: |
| References | |
| NUDOCS 9207210002 | |
| Download: ML17306A830 (5) | |
See also: IR 05000528/1992017
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UNITED STATES
NUCLEAR REGULATORYCOMMISSION
REGION V
1450 MARIALANE
WALNUTCREEK, CAUFORNIA94596-5368
Docket Nos. 50-528,
50-529,
and 50-530
License Nos.
and NPF-74
Arizona Public Service
Company
P.O.
Box 53999, Station
9012
Phoenix, Arizona
85072-3999
Attention:
Hr.
W. F.
Conway
Executive Vice President,
Nuclear
Gentlemen:
SUBJECT:
NRC INSPECTION REPORT
NO. 50-528/529/530/92-17
This refers to the inspection
conducted
by D. Coe,
D. Kirsch, F. Ringwald, J.
Sloan,
and L. Tran of this office, on April 12 through.Hay 30,
1992.
The
inspection
included
a review of activities authorized for your Palo Verde
facility.
At the conclusion of the inspection,
the findings were discussed
with those
members of your staff identified in the enclosed report.
Areas examined during the inspection
are identified in the report.
Within
these
areas,
the inspection consisted of selective
examinations of procedures
and representative
records,
interviews with personnel,
and observation of
activities in progress.
Based
on the results of this inspection,
certain of your activities appeared
to be in violation of NRC requirements.
The violation is based
on your
mechanical
thread
engagement
program requirements
not being met for several
safety
system valves.
Although your subsequent
analysis
has
so far shown
adequate
strength
in these
cases,
our concern is over the apparent
widespread
nature of these deviations
from program requirements.
Also discussed
during
the inspection
were your activities related to the misinstallation of a check
valve in the high pressure
injection system in August 1989.
This issue will
be the subject of a special
inspection report (50-528/92-23).
In our review of feedwater isolation valve'failures,
we noted that there
have
been several
0-ring failures asociated
with the solenoid valves in the
hydraulic control system since
1991.
The most recent 0-ring failure occurred
on June 9,
1992.
While a design
change
has
been proposed, it appears
that
further actions
are necessary
to evaluate
the latest failure and the impact of
potential
leakage
on the safety function of the feedwater isolation valves.
Please
provide
a description of the actions
being taken to resolve this issue.
In accordance
with 10 CFR Part 2.790 of the NRC's "Rules 'of Practice,"
a copy
of this letter
and the enclosures will be placed in the
NRC Public Document
Room.
9207210002
920629
ADOCK 05000528
8
0
-2-
The responses
directed
by this letter and the enclosed
Notice are not subject.
to the clearance
procedures
of the Office of Management
and Budget
as required
by the Paperwork Reduction Act of 1980,
Pub.
L. No.96-511.
Should you have any, questions
concerning this inspection,
we will be glad to
discuss
them with you.
Sincerely,
Enclosures:
S. A. Richards,
Chief
Reactor Projects
Branch
1.
2.
Inspection
Report
Numbers 50-528/92-17,
50-529/92-17,
and 50-530/92-17
cc w/enclosures:
Mr. 0. Mark DeHichele,
Mr. James
H. Levine,
Mr. R. Stevens,
Mr. S. Guthrie,
Mr. E.
C. Simpson,
Hr. Robert
W. Page,
Hr. Thomas
R. Bradish,
Mr. Curtis L. Hoskins,
El
Paso Electric Company
Hr. Roy P. Lessey, Jr.,
Esq., Arkin, Gump, Strauss,
Hauer
and Feld
Mr. James
A. Boeletto,
Esq., Assistant Council, Southern California Edison
Company
Hr. Charles
B. Brinkman, Combustion Engineering,
Inc.
Mr. Steve Olea, Chief Engineer,
Arizona Corporation
Commission
Hr. Bradley
W. Jones,
Esq., Akin, Gump, Strauss,
Hauer
and Feld
Ms. Nancy C. Loftin, Esq.,
Corporate Secretary
5 Corporate
Counsel,
Mr. Jack
R.
Newman,
Esq.,
Newman
5 Holtzinger,
P.C.
Hr. William A. Wright, Interim Acting Director, Arizona Radiation
Regulatory Agency
(ARRA)
Chairman,
Haricopa County Board of Supervisors
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Docket file
G.
Cook
B. Faulkenberry
J. Martin
Resident
Inspector
(4)
Project Inspector
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M. Smith
DCoe
4/ZQ/92
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LTran
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