ML20135D939
| ML20135D939 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 12/04/1996 |
| From: | Gwynn T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Tira Patterson OMAHA PUBLIC POWER DISTRICT |
| Shared Package | |
| ML20135D942 | List: |
| References | |
| NUDOCS 9612100273 | |
| Download: ML20135D939 (5) | |
See also: IR 05000285/1996012
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UNeTED STATES
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NUCLEAR REGULATORY COMMISSION
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T. L. Patterson, Division Manager
Nuclear Operations
Omaha Peblic Power District
Fort Calhoun Station FC-2 4 Adm.
P.O. Box 399, Hwy. 75 - North of Fort Calhoun
Fort Calhoun, Nebraska 68023-0399
SUBJECT: NRC INSPECTION REPORT 50-285/96-12 AND NOTICE OF VIOLATION
Dear Mr. Patterson:
An NRC inspection was conducted October 15 through November 1,1996, at your Fort
Calhoun Station reactor facility. Following the exit meeting the results of this inspection
were discussed with you and members of your staff on December 2,1996. The enclosed
report presents the scope and results of that inspection.
During this inspection, the NRC inspectors identified one violation of the Technical
Specifications. The violation involved adding reactivity to the reactor core at a time when
available wide range logarithmic power channels were not able to provide adequate
continuous flux monitoring due to their distance from the fuel assemblies being loaded into
the reactor vessel. Your staff disagreed with this potential violation during the exit
meeting. This disagreement was discussed during our conversation on December 2,1996.
We believe that continuous neutron flux monitoring during core alteration is required to
provide indication of unexpected changes. We believe that the available data supports our
contention that a violation did occur. We are concerned about your ability to detect
reactivity anomalies or any unsafe condition during refueling operations, as described in the
bases of the Technical Specifications and the Updated Safety Analysis Report. Our
concern is heightened by the condition of reactor cavity water clarity during refueling and
the apparent lack of concern by operators when changing core reactivity conditions did not
provide a corresponding change in neutrun count rate.
The violation is cited in the enclosed Notice of Violation (Notice) and the circumstances
surrounding this violation are described in detail in the enclosed report. Please note that
you are required to respond to this letter and should follow the instructions specified in the
enclosed Notice when preparing your response. The NRC will use your response, in part,
tc determine whether further enforcement action is necessary to ensure compliance with
regulatory requirements.
it is our understanding that, during the exit meeting, on November 1,1996, you stated
Omaha Public Power District would evaluate Operating Procedure OP-11, " Reactor Core
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9612100273 961204
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Refueling," Revision 23, to determine the need for establishing requirements that would
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cause an evaluation of fuel reload sequence to occur in the event of an inoperable
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logarithmic power channel. Please confirm this regulatory commitment in writing within 30
days of the date of this letter that our understanding of this commitment is correct.
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in accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter,
its enclosure (s), and your response will be placed in the NRC Public Document Room. To
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the extent possible, your response should not include any personal privacy, proprietary, or
safeguards information so that it can be placed in the Public Document Room without
redaction.
Should you have any questions concerning this inspection, we will be pleased to discuss
them with you.
Sincerely,
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/ homas P. Gwynn, Di ector
Division of Reactor S fety
Docket No.: 50-285
License No.: DPR-40
Enclosures:
NRC Inspection Report
50-285/96-12
cc w/ enclosures:
Perry D. Robinson, Esq.
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Winston & Strawn
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1400 L. Street, N.W.
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Washington, D.C. 20005-3502
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Jack Jensen, Chairman
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Washington County Board of Supervisors
Blair, Nebraska 68008
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DRP Director
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Cheryl Rogers, LLRW Program Manager
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301 Centennial Mall, South
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James W. Chase, Manager
Fort Calhoun Station
P.O. Box 399
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Fort Calhoun, Nebraska 68023
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