ML20059D617
| ML20059D617 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 12/27/1993 |
| From: | Cowgill C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Denton R BALTIMORE GAS & ELECTRIC CO. |
| Shared Package | |
| ML20059D621 | List: |
| References | |
| NUDOCS 9401100021 | |
| Download: ML20059D617 (3) | |
See also: IR 05000317/1993031
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DEC 2 71993
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Docket Nos: 50-317
License Nos. DPR-53
50-318
Mr. Robert E. Denton
Vice President-Nuclear Energy
Baltimore Gas and Electric Company (BG&E)
Calvert Cliffs Nuclear Power Plant
1650 Calvert Cliffs Parkway
Lusby, Maryland 20657-4702
Dear Mr. Denton:
Subject:
NRC Region I Special Inspection Report Nos. 50-317/93-31 and 50-318/93-31
(November 15,1993 - November 19, 1993)
This report transmits the findings of a special inspection conducted at the Calvert Cliffs
Nuclear Power Plant. The purpose of this inspection was to review BG&E's actions
following the identification of a potential concern regarding long-term operability, under
certain accident conditions, of your closed loop safety-related cooling systems that are
replenished from non-safety-related makeup sources. In addition, inspectors reviewed
BG&E's response to an excessive leak from the Unit I service water system on
September 29,1993. At the conclusion of the inspection, these fm' dings were discussed with
Mr. Cruse of your staff.
Based on the results of this inspection, the NRC concluded that the operation of the service
water and component cooling water systems with the existing makeup sources and
contingency plans is safe. Also, despite weaknesses in timeliness and interdepartmental
communications, BG&E's response to the excessive service water leak on September 29 was
satisfactory and showed good safety perspective. There were no actual safety consequences
to the excessive service water leak or to the operation of the service water and component
cooling water systems without a safety-related makeup source, because a makeup source was
always available.
While BG&E's identification of the challenge to long-term operability of the service water
and component cooling water systems without a safety-related makeup source was
commendable, the NRC is concerned that the issue was not resolved in a timely manner, and
that the resolution was not effectively communicated to operators. The failure to promptly
resolve the condition was a violation of NRC requirements, as specified in the enclosed
Notice of Violation (Appendix A). The NRC recognizes that BG&E considers this problem
to be an example of previously identified weaknesses in the corrective action program, and
strongly encourages your ongoing efforts to strengthen issue resolution.
9401100021 931227
ADOCK 05000317
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DEC 2 71993
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Mr. Robert E. Denton
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You are required to respond to this letter and should follow the instructions specified in the
enclosed Notice of Violation when preparing your response. In your response, you should
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document the specific actions taken and include any additional actions you plan to prevent
recurrence.
In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter
will be placed in the NRC Public Document Room. 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 Paper Work Reduction Act of 1980, Pub. L No. 96.511.
Your cooperation is appreciated.
Sincerely,
Original Signed By:
Curi.is J. Cowgill
Curtis J. Cowgill, Chief
Projects Branch No.1
Division of Reactor Projects
Enclosures:
1.
Appendix A, Notice of Violation
2.
NRC Region I Special Inspection Report Nos. 50-317/93-31 and 50-318/93-31
cc w/ enc 1:
G. Detter, Director, Nuclear Regulatory Matters (CCNPP)
R. McLean, Administrator, Nuclear Evaluations
3. Walter, Engineering Division, Public Service Commission of Maryland
K. Burger, Esquire, Maryland People's Counsel
R. Ochs, Maryland Safe Energy Coalition
K. Abraham, PAO (23) SALP Reports and (2) All Inspection Reports
Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector
State of Maryland (2)
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DEC 2 71993
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Mr. Robert E. Denton
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bec w/ encl:
Region I Docket Room (with concurrences)
C. Cowgill, DRP
L. Nicholson, DRP
R. Fuhrmeister, DRP
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P. Wilson - Calvert Cliffs
W. Dean, OEDO
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R. Capra, NRR
D. Mcdonald, NRR
P. Harris - Vermont Yankee
E. Benner, NRR
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