ML20044E112
| ML20044E112 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 05/14/1993 |
| From: | Greger L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Shelton D CENTERIOR ENERGY |
| Shared Package | |
| ML20044E113 | List: |
| References | |
| NUDOCS 9305210288 | |
| Download: ML20044E112 (2) | |
See also: IR 05000346/1993011
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MAY 14 $33
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Docket No. 50-346
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Centerior Service Company
ATIN: Mr. Donald Shelton
Vice President
Nuclear - Davis-Besse
c/o Toledo Edison Company
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300 Madison Avenue
Toledo, Ohio 43652
Dear Mr. Shelton:
This refers to the inspection conducted by Messrs. R. K. Walton and
E. R. Duncan of this office, and by Mr. J. B. Hopkins of the Office of Nuclear
Reactor Regulation on April 19 through April 21, 1993. The inspection
included a review of activities authorized for your Davis-Besse Nuclear Pcwer
Station. At the conclusion of the inspection, the findings were discussed
with those members of your staff identified in the enclosed report.
The inspection was conducted in response to two unplanned transfer of reactor
coolant inventory events that occurred on April 3 and April 13, 1993, while
your Davis-Besse Nuclear Power Station was shutdown for refueling.
Areas examined during the inspection are identified in the report.
Within
these areas, the inspection consisted of a selective examination of
procedures, representative records, and interviews with personnel.
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
Violation (Notice). The violation is of concern because it directly resulted
in the inadvertent transfer of about 13,570 gallons of water from the reactor
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coolant system to the borated water storage tank. This violation is being
issued because your corrective actions for a similar event in December 1992
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were not adequate to prevent occurrence of this event.
Both the April 3 and
April 13 events are of concern because, during one or both events, a number of
weaknesses during shutdown activities were demonstrated concerning monitoring
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of important plant parameters, operator cognizance of changing equipment
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status and its effects on interfacing systems, attention to detail, operator
knowledge of the decay heat removal system, and communications. We request-
that'you be prepared.to discuss these events at a management meeting in the
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Region III office on June 3, 1993.
You are required to respond to this letter and should follow the instructions
specified in the enclosed Notice when preparing your resoonse.
In your
response, you should document the specific actions taken and any additional
actions you plan to prevent recurrence. After reviewing your response to this
Notice, including your proposed corrective actions and the results of future
,
200114
9305210288 930514
ADOCK 05000346
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MAY 141333
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Centerior Service Company
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inspections, the NRC will determine whether further NRC enforcement action is
necessary to ensure compliance with NRC regulatory requirements.
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During this inspection, one additional activity appeared to be in violation of
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NRC requirements. However, as described in the enclosed inspection report,
you identified this violation. Therefore, the violation will not be subject
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to enforcement action because your efforts in identifying and correcting the
violation meet the criteria specified in Section VII.B of the " General
Statement of Policy and Procedure for NRC Enforcement Actions," (Enforcement
Policy, 10 CFR Part 2, Appendix C).
In accordance with 10 CFR 2.790 of the Commission's regulations, a copy of
this letter, enclosures, and your response to this letter will be placed in
the NRC Public Document Room.
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The response directed by this letter and the accompanying Notice 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.
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Sincerely,
nor.t :nal osc;=ca by L.D. Orr.ce"
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L. Robert Greger, Chief
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Reactor Projects Branch 3
Enclosures:
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2.
Inspection Report
No. 50-346/930ll(DRP)
cc w/ enclosures:
L. Storz, Plant Manager
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OC/LfDCB
Resident Inspector, RIII
James R. Williams, State of Ohio
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Robert E. Owen, Ohio
Department of Health
A. Grandjean, State of Ohio,
Public Utilities Commission
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