ML20206C913
| ML20206C913 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 06/06/1986 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20206C894 | List: |
| References | |
| 50-413-86-15, 50-414-86-16, NUDOCS 8606190597 | |
| Download: ML20206C913 (2) | |
Text
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ENCLOSURE 1 NOTICE OF VIOLATION Duke Power Company Docket Nos. 50-413 and 50-414 Catawba License Nos. NPF-35 and NPF-48 The following violatio7s were identified during an inspection conducted on March 25,1986. The Severity Levels were assigned in accordance with the NRC Enforcement Policy (10 CFR Part 2, Appendix C).
1.
Technical Specification (TS) 3.2.1 requires that Axial Flux Difference (AFD) shall be maintained within a specified target band about a specific flux difference.
Action a.
requires that if indicated AFD is outside the target band and with thermal power greater than or equal to 90% of rated thermal power, within 15 minutes restore the indicated power to within the target band limits or reduce thermal power to less than 90% of rated thermal power.
Action b. requires that if indicated AFD is outside the acceptable operating limits of Figure 3.2.1 and with thermal power less than 90% but equal to or greater than 50% of rated thermal power, reduce thermal power to less than 50% of rated thermal power within 30 minutes and adjust the power range neutron flux-high setpoints to less than or equal to 55% of rated thermal power within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
Contrary to the above, on March 17, 1986, AFD was not maintained in the specified target band and corrective action was not taken as required in that, rated thermal power was not reduced to less than 90% rated thermal power within 15 minutes as required by Action a, rated thermal power was not reduced to less than 50% rated thermal power within 30 minutes and the power range neutron flux-high setpoints were not reduced to less than or equal to 55% of rated thermal power within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> as required by action b.
This is a Severity Level IV Violation applicable to Unit 1 only.
(Supplement I) 2.
10 CFR 50.59(b) requires that the licensee shall maintain records of changes in the facility as described in the safety analysis report and that these records shall include a written safety evaluation which provides the bases for the determination that the change does not involve an unreviewed safety question.
8606190597 860606 PDR ADOCK 05000413 PDR G
Duke Power Company 2
Docket Nos. 50-413 and 50-414 Catawba License Nos. NPF-35 and NPF-48 Contrary to the above, a record of a change to the facility as described in the safety analysis report did not include a written safety evaluation that included the bases for the determination that the change did not involve an unreviewed safety question, in that, Nuclear Station Modification CN-2-0084 was processed to delete the feedwater pump turbine trip on feedwater isolation and the safety evaluation for this modification did not include the bases for the determination that this change d* d not involve an un-reviewed safety question.
This is a Severity Level IV Violation applicable to Unit 2 only (Supplement 1).
Pursuant to 10 CFR 2.201, you are required to submit to this office within 30 days of the date of this Notice, a written statement or explanation in reply, including: (1) admission or denial of the alleged violations; (2) the reasons for the violations if admitted; (3) the corrective steps which have been taken and the results achieved; (4) corrective steps which will be taken to avoid further violations; and (5) the date when full compliance will be achieved.
Security or safeguards information should be submitted as an enclosure to facilitate withholding it from public disclosure as required by 10 CFR 2.790(d) or 10 CFR 73.21.
Date:
JUN 0 6 198S
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