ML18095A621

Advises That short-term Actions Identified in Adequate to Ensure Operability of RHR Pumps

ML18095A621
Person / Time
Site:	Salem
Issue date:	11/29/1990
From:	Stone J Office of Nuclear Reactor Regulation
To:	Miltenberger S Public Service Electric & Gas Co, of New Jersey
References
TAC-77962 IEB-88-004, IEB-88-4, NUDOCS 9012040044
Download: ML18095A621 (3)

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November 29, 199-Docket No. 50-272 Mr. Steven E. Miltenberger Vice President and Chief Nuclear Officer Public Service Electric & Gas Company Post Office Box 236 Hancocks Bridge, New Jersey 08038

SUBJECT:

REVISED RESPONSE TO NRC BULLETIN 88-04, POTENTIAL SAFETY-RELATED PUMP LOSS, SALEM GENERATING STATION, UNIT 1 (TAC NO. 77962)

In you letter of August 31, 1990, you stated that the Residual Heat Removal (RHR) pumps at Salem 1 may be susceptible to the strong pump/weak pump interaction when operating in parallel. In that letter you provided data to show that the pumps are u.chieving sufficient flow in the recirculation mode at the present time.

In addition, you committed to performing this surveillance test every 92-days until a permanent solution can be found.

An Emergency Operating Procedure change has also been developed to be implemented in the event the difference between the discharge head of the two RHR pumps exceed 6.5 psid. This would require closure of the RHR cross-connect valve. This change has been agreed to by Westinghouse and has been evaluated as required by 10 CFR 50.59.

A permanent solution to correct this potential deficient condition is scheduled to be implemented by the end of the tenth refueling outage at Salem 1.

Your short-term actions as identified in you August 31, 1990, letter and summarized above are adequate to ensure the operability of the RHR pumps.

As requested in item 4 of Bulletin 88-04, you should inform the Commission of the long-term corrective action to be taken. Also, as requested in item 5 of Bulletin 88-04, within 30-days of completion of the long-term corrective actions, a written response describing the actions taken should be provided.

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/SI James C. Stone, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

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v UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 November 29, 1990 Docket No. 50-272 Mr. Steven E. Miltenberger Vice President and Chief Nuclear Officer Public Service Electric & Gas Company Post Office Box 236 Hancocks Bridge, New Jersey 08038

SUBJECT:

REVISED RESPONSE TO NRC BULLETIN 88-04, POTENTIAL SAFETY-RELATED PUMP LOSS, SALEM GENERATING STATION, UNIT 1 (TAC NO. 77962)

In you letter of August 31, 1990, you stated that the Residual Heat Removal (RHR) pumps at Salem 1 may be susceptible to the strong pump/weak pump interaction when operating in parallel.

In that letter you provided data to show that the pumps are achieving sufficient flow in the recirculation mode at the present time.

In addition, you committed to performing this surveillance test every 92-days until a permanent solution can be found.

An Emergency Operating Procedure change has also been developed to be implemented in the event the difference between the discharge head of the two RHR pumps exceed 6.5 psid. This would require closure of the RHR cross-connect valve. This change has been agreed to by Westinghouse and has been evaluated as required by 10 CFR 50.59. A permanent solution to correct this potential deficient condition is scheduled to be implemented by the end of the tenth refueling outage at Salem 1.

Your short-term actions as identified in you August 31, 1990, letter and summarized above are adequate to ensure the operability of the RHR pumps.

As requested in item 4 of Bulletin 88-04, you should inform the Commission of the long-term corrective action to be taken. Also, as requested in item 5 of Bulletin 88-04, within 30-days of completion of the long-term corrective actions, a written response describing the actions taken should be provided.

cc: See next page Sincerely,

~c.b James C. Stone, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

'Mr.* Steven E. Miltenberger Public Service Electric & Gas Company Salem Nuclear Gsnerating Station cc:

Mark J. Wetterhahn, Esquire Bishop, Cook, Purcell & Reynolds 1400 L Street NW Washington, DC 20005-3502 Richard Fryling, Jr., Esquire Law Department - Tower 5E 80 Park Pl ace Newark, NJ 07101 Mr. L. K. Miller General Manager - Salem Operations Salem Generating Station P.O. Box 236 Hancocks Bridge, NJ 08038 Mr. S. LaBruna Vice President - Nuclear Operations Nuclear Department P.O. Box 236 Hancocks Bridge, New Jersey 08038 Mr. Thomas P. Johnson, Senior Resident Inspector Salem Generating Station U.S. Nuclear Regulatory Convnission Drawer I Hancocks Bridge, NJ 08038 Dr. Jill Lipoti, Asst~ Director Radiation Protection Programs NJ Department of Environmental Protection CN 415 Trenton, NJ 08625-0415 Maryland People's Counsel American Building, 9th Floor 231 East Baltimore Street Baltimore, Maryland 21202 Mr. J. T. Robb, Director Joint Owners Affairs Philadelphia Electric Company 955 Chesterbrook Blvd., SlA-13 Wayne, PA 19087 Richard B. McGlynn, Conmission Department of Public Utilities State of Mew Jersey 101 Commerce Street Newark, NJ 07102 Regional Administrator, Region I U. S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Lower Alloways Creek Township c/o Mary 0. Henderson, Clerk Municipal Building, P.O. Box 157 Hancocks Bridge, NJ 08038 Mr. Bruce A. Preston, Manager Licensing and Regulation Nuclear Department P.O. Box 236 Hancocks Bridge, NJ 08038 Mr. David Wersan Assistant Consumer Advocate Office of Consumer Advocate 1425 Strawberry Square Harri~burg, PA 17120 Mr. Scott B. Ungerer MGR. - Joint Generation Projects Atlantic Electric Company P.O. Box 1500 1199 Black Horse Pike Pleasantville, NJ 08232 Mr. Jack Urban General Manager, Fuels Department Delmarva Power & Light Company 800 King Street Wilmington, DE 19899 Public Service Conunission of Maryland Engineering Division ATTN:

Chief Engineer 231 E. Baltimore Street Baltimore, MD 21202-3486