ML20094M129

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Submits Actions Plan to Evaluate power-operated Gate Valves for Susceptibility to Pressure Locking or Thermal Binding in Response to GL 95-07
ML20094M129
Person / Time
Site: Beaver Valley
Issue date: 11/15/1995
From: George Thomas
DUQUESNE LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-95-07, GL-95-7, NUDOCS 9511210279
Download: ML20094M129 (2)


Text

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M eV Beaver Va ley Power Station pgggtg^ *=d (412) 643-8069 FAX GEORGE S. THOMAS gv;;g;cafrasioent November 15,1995 Nuclear Power Division U. S. Nuclear Regulatory Commission i

Attention: Document Control Desk l

Washington, DC 20555-0001 j

Subject:

Beaver Valley Power Station, Unit No. I and No. 2 l

BV-1 Docket No. 50-334, License No. DPR-66

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BV-2 Docket No. 50-412, License No. NPF-73 Add!tional Information in Response to Generic Letter 95-07 4

References:

1.

"NRC Generic Letter 95-07: Pressure Locking and Thermal Binding of Safety-Related Power Operated Gate Valves," dated August 17, j

1995.

j 2.

DLC Submittal, " Sixty-Day Response to. Generic Letter 95-07,"

Dated October 16,1995.

l 3.

NRC Letter, " Pressure Locking and Thermal Binding Meeting,"

i dated September 27,1995.

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4 4.

NRC Letter, " Comments Regarding Duquesne Light Company's 60-Day Response to Generic Letter (GL) 95-07, " Pressure Locking and Thermal Binding of Safety Related Power-Operated Gate Valves,"

j Beaver Valley Power Station, Units 1 and 2 (TAC Nos. M93429 l

and M93430)," dated November 3,1995.

f In response to Generic Letter (GL) 95-07 (Reference 1.), Duquesne Light Company

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(DLC) submitted its action plan (Reference 2.) to evaluate power-operated gate valves for susceptibility to pressure locking or thermal binding. The action plan was in j

compliance with the request cf the generic letter to complete the evaluations within 180 days of the date of the generic letter and indicated that operability concems, if any, would be addressed as they were identified. At the time of the DLC submittal, efforts to j

l accomplish the action plan were already underway.

Based on DLC's submittal, the NRC staff determined that further information was required to ensure that DLC's previous evaluations had considered recent information or that the 90-day actions would be completed. The purpose of this letter is to inform the NRC that DLC has completed the 90-day actions requested in GL 95-07, as they have been clarified at the Region I Meetings announced by Reference 3, and as requested in j

Reference 4.

9511210279 951115 ig PDR ADOCK 05000334 1

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Beaver Valley Power Station Units 1 and 2 a

i Additional Information in Response to GL 95-07 Page 2' It is intended that the remainder of the GL 95-07 Program for the Beaver Valley Power Station Units will continue as described in DLC's sixty-day response to the generic letter. Therefore, the actions will be completed and the responses provided 4

i within the 180 days of the date of GL 95-07.

DLC believes that this submittal is responsive to the NRC's requests in GL 95-07 and Reference 4. If there are question regarding this letter, please contact Roy K. Brosi, Manager, Nuclear Safety Department at (412) 393-5210.

Sincerely,

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eor S. Thomas c:

Mr. L. W. Rossbach, Sr. Resident Inspector Mr. T. T. Martin, NRC Region I Administrator Mr. D. S. Brinkman, Sr. Project Manager i