ML20195C848
| ML20195C848 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 06/09/1988 |
| From: | Herdt A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20195C836 | List: |
| References | |
| 50-369-88-13, 50-370-88-13, NUDOCS 8806220297 | |
| Download: ML20195C848 (2) | |
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ENCLOSURE 1 NOTICE OF VIOLATION Duke Power Company Docket Nos. 50-369 and 50-370 McGuire License Nos. NPF-9 and NPF-17 During the-Nuclear Regulatory Commission (NRC) inspection conducted on May 2-6, 1988, 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, Appe<ndix C (1988), the violation is listed below:
Technical Specification 4.0.5 requirss inservice testing in accordance with ASME Section XI.
The testing specified by Section XI includes periodic stroke timing of power onerated valves and comparisons of stroke times obtained with previously obtained values.
Based on the extent of stroke time change observed for a valve,Section XI requires actions-such as increased test frequency - to aid in assuring that the valve remains operable.
By implication, stroke time tests must be performed in a manner which assures that the times obtained and compared are not unduly effected by changes in measurement method or accuracy.
Contrary to the above, in October 1987, the licensee was found to permit Section XI stroke time tests to be performed in a manner that could be unduly affected by changes in measurement method and instruments:
(1) Procedures (e.g., Procedures PT/1 and 2/A/4403/02 for testing nuclear service water valves) permitted the use of computer or (when the computer was unavailable) stopwatches for stroke timing valves.
The computer and stopwatch times ma because, for some valves (e.g. y differ by up to approximately 10%
2RN-279) Ions from different limitthe computer an measurements are terminated at indicat switches.
These switch locations may differ by up to 10% of valve travel.
The licensee did not account for errors due to timing to different limit switches in making required stroke time comparisons.
(2) Stopwatches were not calibrated or otherwise checked or maintained to assure that the times they provided were accurate.
This is a Severity Level IV violation (Supplement I).
Pursuant to the provisions of 10 CFR 2.201, Duke Power Company is hereby required to submit a written statement or explanation to the Nuclear Regulatory Commission, ATTN:
Document Control Desk, Washington, DC 20555, with a copy to the Regional Administrator, Region II, and a copy to the NRC Resident Inspector, McGuire, within 30 days of the date of the letter transmitting this Notice.
This reply should be clearly marked as a "Reply to a Notice of 8806220297 880609 ADOCK0500g9 DR
' Duke Power Company 2
Docket Nos. 50-369 and 50-370 McGuire License Nos. NPF-9 and NPF-17
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t Violation" and should include [for each violation):
(1) admission or denial of the violation, (2) the reason for the violation if admitted, (3) the corrective steps which have been taken and the results achieved, (4) the corrective steps which will be taken to avoid further violations, and (5) the date when full compliance will be achieved.
Where good cause is shown, consideration will be given to extending the response time.
If an adequate reply is not received within the time specified in this Notice, an order 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.
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.
FOR THE NUCLEAR REGULATORY COMMISSION
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- Alan R. Herdt, Chief Engineering Branch Division of Reactor Safety Dated at Atlanta, Georgia this cy day of a e e.1988 J
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