ML20034F294
| ML20034F294 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 02/26/1993 |
| From: | Martin T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Delgeorge L COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20034F295 | List: |
| References | |
| NUDOCS 9303030002 | |
| Download: ML20034F294 (2) | |
See also: IR 05000254/1993005
Text
.
,
,
February 26, 1993
,
s
Docket No.
50-254
Docket No. 50-265
,
Commonwealth Edison Company
ATTN: Mr. L. O. DelGeorge, Vice President
'
Nuclear Oversight and Regulatory
Services
Executive Towers West III
-
1400 Opus Place, Suite 300
Downers Grove, IL 60515
Dear Mr. DelGeorge
i
SUBJECT: NRC INSPECTION REPORT N0. 50-254/93005(DRS); 50-265/93005(DRS)
4
a
W. Pegg of this office on February 9-11, 1993. The inspection focused on the
'
This letter refers to the special inspection conducted by K.
Shembarger and
circumstances that led to the Unit I and Unit 2 HPCI system check valve -
leakage that was identified on February 5,1993, at the Quad Cities Nuclear
'
Plant and the impact the leakage had on HPCI system operability. At the
conclusion of the inspection the findings were discussed with those members of
c'
your staff identified in the enclosed report.
The enclosed copy of our inspection report identifies areas examined during
the inspection. The inspectors selectively examined procedures and
representative records, made observations, and conducted interviews with your
.'
personnel.
The inspectors determined that the HPCI systems were in a degraded condition
for several years as a result of the check valve leakage, which could have
affected the ability cf these systems to perform their function during a small
break LOCA event. The inspector identified several weaknesses that led to the
misaligned hinge and disk assemblies, including improper check valve
classifications in the IST program, inadequate check valve testing, and an
'
inadequate maintenance procedure.
Based on the results of this inspection, certain of your activities appeared
to be in violation of NRC requirements as specified in the enclosed Notice of
i
Violation (Notice).
You are required to respond to this letter and should follow the instructions
-l
specified in the enclosed Notice when preparing your response.
In your
l
response, you should document the specific actions taken and any additional
actions you plan to prevent recurrence. After reviewing your resonse to this
Notice, including your proposed corrective actions and the results of' future
inspections, the NRC will determine whether further NRC enforcement action is
necessary to ensure compliance with NRC regulatory requirements.
9303030002-930226
ADDCK 05000254-
1
G
'
&/
.
,o
L. O. De1 George
2
February 26, 1993
In accordance with 10 CFR 2.790 of the Conunission's regulations, a copy of
this letter, the enclosures, and your response to this letter will be placed
in the NRC Public Document Room.
The responses directed by this letter and the accompanying Notices are not
subject to the clearance procedures of the Office of Management and Budget as
required by the Paperwork Reduction Act of 1980, PL 96-511.
We will gladly discuss any questions you have concerning this inspection.
Sincerely,
original signed by
T. O. Martin, Acting Director,
Division of Reactor Safety
Enclosure:
1.
l
2.
Inspection Report No.
50-254/93005(DRS) and
50-265/93005(DRS)
'
cc w/ enclosure:
R. Pleniewicz, Site Vice President
R. Bax, Station Manager
A. Misak, Regulatory Assurance
Supervisor
'
D. Farrar, Nuclear Regulatory
Services Manager
DCD/DCB (RIDS)
OC/LFDCB
Resident Inspectors-Quad Cities,
Dresden, LaSalle, Clinton
Richard Hubbard
J. W. McCaffrey, Chief
>
Public Utilities Division
LPM, NRR
Robert Newmann, Office of Public
.
Counsel, State of Illinois
.
State Liaison Officer
.
Chairman, Illinois Commerce
Commission
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2/at/93
2/03/93
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2/ 2r/93.
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