ML16341G759
| ML16341G759 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 10/30/1992 |
| From: | Richards S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| Shared Package | |
| ML16341G760 | List: |
| References | |
| NUDOCS 9211180233 | |
| Download: ML16341G759 (8) | |
See also: IR 05000275/1992025
Text
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UNITED STATES
NUCLEAR REGULATORYCOMMISSION
REGION V
1450 MARIALANE
WALNUTCREEK, CAUFORNIA94596-5368
.OCT 30 1992
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
Gentlemen:
Subject:
NRC Inspection of Diablo Canyon Units
1 and
2
This refers to the routine inspection
conducted
by H. Hiller and
P. Horrill
during the period from August
25 through September
28,
1992.
This inspection
examined your activities
as authorized
by NRC License
Nos.
and DPR-82.
At the conclusion of the inspection,
the inspectors
discussed
their findings
with members of the
PG&E staff.
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 Notice of Violation (Notice) included in this report is based
on the
findings of NRC inspection report 50-275/91-34
which examined the instance of
a non-licensed
operations
person assisting
licensed
operators
in the control
room following a Unit
1 trip on Hay 17,
1991.
Based
on the results of that
inspection
and our review,
we have concluded that non-licensed
personnel
must
be specifically trained
and qualified to manipulate
systems
important to
safety,
as required
by your procedures,
and that this was not the case during
this event.
However,
we recognize that your organization
has taken
satisfactory corrective actions to control the duties .of non-licensed
operations
personnel;
consequently,
no response
is required to the Notice.
The two open items associated
with inspection report 50-275/91-34
are also
closed.
Several
problems
were identified during this period which w'ere self-revealing,
were identified by the
NRC, or were found as
a consequence
of previous
problems..
These
problems could have
been averted
by more penetrating
understanding
and investigation of previous events.
Of particular note are:
(1) the turbine overspeed
and
RCS cooldown event,
for which two precursors
could
be identified;
and (2) the inadequate
quality oversight program for
post-installation testing of emergency diesel
generator
(EDG) 2-3, which could
have
been
found much sooner.
The latter of these
issues
is the subject of a
non-cited violation,
as described
in Section VII.B of the Enforcement Policy
92iii80233 921030
ADOCK 05000275
8
I
~~a I
(Paragraph
6 of the enclosed
inspection report).
You are encouraged
to
promote
a high level of 'quality oversight
and technical
review to anticipate
such problems,"and
to avoid recurrence of previously identified problems.
In accordance
with 10,CFR 2.790(a)',
a copy of this letter and the enclosures
will be placed in the
NRC Public Document
Room.
This. letter and its enclosures
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.96-511.
Should you have
any questions
concerning this inspection,
we will be pleased
to discuss
them with you.
.Sincerely,
S. A. Richards,. Deputy Director
Division of Reactor Safety
and Projects
Enclosures:
2. Inspection
Report Nos.
50-, 275/92-25'nd
50-323/92-25
cc w/enclosures:
J.
A. Sexton,
C. J.
Warner,
J.
D. Townsend,
PG&E (Diablo Canyon)
D. A. Taggart,
PG&E (Diablo Canyon)
T. L. Grebel,
PG&E (Diablo Canyon)
C.
B. Thomas,
News Services,
State of California (Gordon K. Van Vleck)
R. Hendrix, County Administrator
Sandra Silver
-3-
bcc w/copy of enclosures:
Docket File
Project Inspector
Resident
Inspector
B. Faulkenberry
J. Hartin
R.
Huey
P.
Johnson
H. Rood,
G.
Cook
bcc w/o enclosures:
H. Smith
J.
Bianchi
J. Zollicoffer
REGION
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VIOLA IO
Pacific
Gas
and Electric
Company'iablo
Canyon Unit
1
Docket No. 50-275
Li'cense
No. DPR-80
During an
NRC inspection
conducted
on August
25 through
September 28,'991,
one violation of NRC requirements
was identified.
In accordance
with the
"General
Statement of Policy and Procedure for NRC Enforcement Actions,"
10 CFR Part 2, Appendix C, the violation is identified below:
Technical Specification 6.8. 1 requires that written procedures
be
implemented covering the activities referenced
in Appendix A of
Regulatory
Guide 1.33, Revision 2, February
1978.
Regulatory
Guide 1.33, Revision 2, Appendix A lists, in part,
procedures
for authorities
and responsibilities for safe operation
and shutdown.
PG&E Operations
Department Policy A-13, Revision 0,
"Non Licensed
Operator Control
Room Duties," states that
"A Non-licensed
the Control
Room shall not be assigned
tasks which involve the following:
.... Operation of controls which have or could possibly have an-indirect
effect on reactivity,
such
as,
Steam
Dump Controls,
Hain Feedwater
Controls, or CVCS charging
and letdown controls."
Contrary to the above,
on Hay 17,
1991, licensee
personnel
directed
a
~
non-licensed
assistant
control operator
(ACO) to shut
down the safety
injection pumps
and the steam driven auxiliary feedwater
pumps, either of
which could have
had
an indirect effect upon reactivity.
This is a Severity Level
IV Violation (Supplement I);
Based
upon the corrective actions already taken
by the licensee,
no response
to this notice is required.
Dated at Walnut Creek, California
this 30'~ day of Q~4>e,,
1992.