ML20198A372

Forwards Safety Evaluation Re Licensee Response to GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Power-Operated Gate Valves

ML20198A372
Person / Time
Site:	Limerick
Issue date:	12/10/1998
From:	Buckley B NRC (Affiliation Not Assigned)
To:	Geoffrey Edwards PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
Shared Package
ML20198A375	List: ML20198A372 ML20198A387
References
GL-95-07, GL-95-7, TAC-M93478, TAC-M93479, NUDOCS 9812160246
Download: ML20198A372 (3)

Text

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December 10, 1998

' b Mr. Girrstt D. Edw:rds l . Director-Licensing, MC 62A-1 PECO Energy Company

, Nuclear Group Headquarters l Correspondence Control Desk l P.O. Box No.195 l Wayne, PA 19087-0195

SUBJECT:

LIMERICK GENERATING STATION, UNITS 1 AND 2, GENERIC LETTER (GL) 95-07, PRESSURE LOCKING AND THERMAL BINDING OF SAFETY-RELATED POWER-OPERATED GATE VALVES (TAC NOS. M93479 AND M93478)

Dear Mr. Edwards:

On August 17,1995, the NRC issued GL 95-07, which requested licensees to take actions to i

ensure those safety-related gate valves that are susceptible to pressure lockir'a on thermal binding are capablo of performing their safety functions. The NRC staff has completed its evaluation of the information you provided in your response dated February 13,1996, as supplemented June 19,1996. Based on the review of your submittals, we find that you have.

adequately addrer.ied the actions requested in GL 95-07, as delineated in the enclosed safety evaluation.

This completes our effort on this issue and we are, therefore, closing out TAC Nos. M93479 and M93480.

Sincerely, original signed by:

Bartholomew C, Buckley, Senior Project Manager Project Directorate 1-2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353

Enclosure:

Safety Evaluation

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NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20666 4 001

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Mr. Garrett D. Edwards Director-Licensing, MC 62A-1 PECO Energy Company Nuclear Group Headquarters Correspondence Control Desk l P.O. Box No.195 I Wayne, PA 19087-0195 l

SUBJECT:

LIMERICK GENERATING STATION, UNITS 1 AND 2, GENERIC LETTER (GL) 95-07, PRESSURE LOCKING AND THERMAL BINDING OF SAFETY-  ;

RELATED POWER-OPERATED GATE VALVES (TAC NOS. M93479 AND l M93478)

Dear Mr. Edwards:

On August 17,1995, the NRC issued GL 95-07, which requested licensees to take actions to ensure those safety-related gate valves that are susceptible to pressure locking on thermal binding are capable of performing their safety functions. The NRC staff has completed its evaluation of the information you provided in your response dated February 13,1996, as supplemented June 19,1996. Based on the review of your submittals, we find that you have adequately addressed the actions requested in GL 95-07, as delineated in the enclosed safety evaluation.

This completes our effort on this issue and we are, therefore, closing out TAC Nos. M93479 and M93480.

Sincerely, B, M w C.L L%

Bartholomew C. Buckley, Senior Project Manager Project Directorate 12 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353 l

Enclosure:

Safety Evaluation cc w/ encl: See next page

'. t, i Mr. Garrett D. Edwards Limerick Generating Station, Units 1 & 2 PECO Energy Company cc:

J. W. Durham, Sr., Esquire Chief Division of Nuclear Safety Sr. V.P. & General Counsel PA Dept. of Environmental Resources PECO Energy Company P.O. Box 8469 2301 Market Street Harrisburg, PA 17105-8469 Philadelphia, PA 19101 Manager-Limerick Licensing,62A-1 Director Site Engineering PECO Energy Company Limerick Generating Station 965 Chesterbrook Boulevard P.O. Box A Wayne, PA 19087-5691 Sanatoga, PA 19464 Mr. James D. von Suskii, Vice President Limerick Generating Station Manager-Experience Assessment Post Office Box A Limerick Generating Station Sanatoga, PA 19464 P.O. Box A Sanatoga, PA 19464 Plant Manager Limerick Generating Station Library P.O. Box A U.S. Nuclear Regulatory Commission Sanatoga, PA 19464 Region 1 475 Allendale Road Regional Administrator, Region i King of Prussia, PA 19406 U.S. Nuclear Regulatory Commission 475 Allendale Road Senior Manager Operations King of Prussia, PA 19406 Limerick Generating Station P.O. Box A Senior Resident inspector Sanatoga, PA 19464 U.S. Nuclear Regulatory Commission Limerick Generating Station Dr. Judith Johnsrud P.O. Box 596 National Energy Committee Pottstown, PA 19464 Sierra Club 433 Orlando Avenue Director-Site Support Services State College, PA 16803 Limerick Generating Station P.O. Box A Sanatoga, PA 19464 Chairman Board of Supervisors of LimerickTownship 646 West Ridge Pike Linfield, PA 19468

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