ML17311A244

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Notice of Violation from Insp on 940612-0723.Violation Noted:Licensee Failed to Adjust CPC Delta T Power to Agree W/Calorimetric Power Calculation When Reactor Power Greater than 15% Rated Thermal Power
ML17311A244
Person / Time
Site: Palo Verde 
Issue date: 09/06/1994
From:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
Shared Package
ML17311A243 List:
References
50-528-94-22, NUDOCS 9409120053
Download: ML17311A244 (2)


Text

APPENDIX A NOTICE OF VIOLATION Arizona Public Service Company Palo Verde Nuclear Generating Station Docket:

50-528 License:

NPF-41 During an NRC inspection conducted on June 12 through July 23,

1994, a

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:

Unit 1 Technical Specification 4.3. 1. 1, Table 4.3-1, Item I.C.2,

requires, in part, that once every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, with reactor power greater than 15 percent rated thermal power, the licensee adjust the core protection calculator (CPC) delta T power to agree with the calorimetric power calculation if the absolute difference is greater than 2 percent.

Contrary to the above, during a period from February 18, 1993, to June 19,

1994, when the reactor power was greater than 15 percent rated thermal power, the licensee did not adjust the CPC delta T power to agree with the calorimetric power calculation when the CPC Channel D

delta T power was fluctuating with an absolute difference of greater than 2 percent.

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This is a Severity Level IV violation (Supplement I) applicable to Unit l.

Pursuant to the provisions of 10 CFR 2.201, Arizona Public Service Company 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, 611 Ryan Plaza Drive, Suite 400, Arlington, Texas

76011, and a copy to the NRC Resident Inspector at the facility that is the subject of 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. Notice of Violation" and should include for each violation:

(1) the reason for the violation, or, if contested, the basis for disputing the violation, (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 adequate reply is not received within the time specified in this Notice, an order or a Demand for Information may be issued to show cause 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 the response time.

Dated at Arlington, Texas, this 6th day of September 1994 9409120053 940906 PDR ADOCK 05000528 8

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