ML20035C801
| ML20035C801 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 04/05/1993 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML20035C798 | List: |
| References | |
| 50-285-93-03, 50-285-93-3, NUDOCS 9304090094 | |
| Download: ML20035C801 (1) | |
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APPENDIX A NOTICE OF VIOLATION j
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Omaha Public Power District Docket:
50-285 Fort Calhoun-Station License: DPR-40 During an NRC inspection conducted on January 31 through March 13, 1993, a i
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 listed below:
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Technical Specification 2.15(1) states, "In the event the number of channels of a particular system in service falls one below the total number of installed channels, the inoperable channel shall. be placed in l
either the bypassed or tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
If the inoperable channel is not restored to operable status after the allowable time for bypass (48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />), it shall be placed in the tripped position."
Contrary to the above, on October 30, 1992, after swapping Power Range Control Channels A and B for the Power Range Safety Channels A and D i
(following the failure of a detector), the licensee failed to perform adequate postmaintenance testing to determine operability, thus failing to detect that the signal _ cables for the nuclear instrumentation
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subchannels were misaligned, causing Channel D Reactor Protective System l
Trip Units 1, 9, and 12, to remain inoperable until' they were detected on March 1, 1993. The licensee failed during this time period to place Channel D trip units in the tripped position.
This is a Severity Level IV violation.
(Supplement I) (285/9303-01)'
j Pursuant to the provisions of 10 CFR Part 2.201, the Omaha Public Power District is hereby required to submit a written statement or explanation to the U. S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, D.C. 20555, with a copy to the Regional Administrator, Region IV, j
a copy to the NRC Resident Inspector at the facility that is the subject of f
this Notice, within 30 days of the date of the letter transmitting this' Notice of Violation (Notice).
This reply should be clearly marked as a " Reply to a i
Notice of Violation" and should include for each violation:
(1) the reason for the violation, or, if contested, the basis for disputing.the violation, l
(2) the corrective steps that have been taken and the results achieved, (3) the corrective steps that will be taken to avoid further violations, and (4) the date when full compliance will be achieved.
If an adeq; ate reply is i
not received within the time specified in this Notice, an order or demand for-
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information may be-issued as to why the license should not be modified, suspended, or revoked, or why such other action as may be proper should not be taken. Where good cause.is shown, consideration will be given to extending i
the response time.
l Dated at prlington, Texas, this fi g day of -
1993 i
1 9304090094 930405 PDR ADCK;K 0300028S i
O PDR I
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