ML18093B490

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Documents 890202 Telcon Re License Change Request 88-11 on RHR Auto Closure Interlock Deletion
ML18093B490
Person / Time
Site: Salem  PSEG icon.png
Issue date: 03/03/1989
From: Miltenberger S
Public Service Enterprise Group
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NLR-N89022, NUDOCS 8903150214
Download: ML18093B490 (3)


Text

r-.

I Public Service Electric and Gas Company

  • Steven E. Miltenberger Public Service Electric and Gas Company P.O. Box 236, Hancocks Bridge, NJ 08038 609-339-4199 Vice President and Chief Nuclear Officer March 3, 1989 NLR-N89022 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Gentlemen:

REQUEST FOR ADDITIONAL INFORMATION LICENSE CHANGE REQUEST 88-11 SALEM GENERATING STATION UNIT NOS. 1 AND 2 DOCKET NO. 50-272 AND 50-311 This letter documents a conversation between NRC staff members Mr. J. Stone and Mr. G. Schwenk and PSE&G representatives on February 2, 1989 regarding License Change Request (LCR) 88-11; RHR Auto Closure Interlock deletion. Mr. Schwenk had several questions regarding our LCR submittal. His questions and our responses are presented in Attachment 1.

Should you have any further questions, please feel free to contact us.

Sincerely, Attachment

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  • v Document Control Desk 2 03-03-89 c Mr. J. c. Stone Licensing Project Manager Ms. K. Halvey Gibson Senior Resident Inspector Mr. w. T. Russell, Administrator Region I Ms. J. Moon, Interim Chief New Jersey Department of Environmental Protection Division of Environmental Quality Bureau of Nuclear Engineering CN 415 Trenton, NJ 08625

ATTACHMENT 1 Question - How will the RHR valve position alarm setpoint be determined?

Response - The RHR valve position alarm setpoint will be developed in accordance with the formula provided in the Westing~ouse Owners Group letter, OG-89-01, dated January 3, 1989. currently, the setpoint under consideration is between 425 psig and 450 psig.

Question - Will the valve position indication be maintained upon removal of the power to the RHR isolation valves?

Response - PSE&G will ensure that valve position indication is available in the Control Room after power is removed to the valve. Additionally, the alarm circuitry will also continue to function after valve power is removed.

Question - The NRC will require procedures to confirm operability of the alarm circuitry.

Response - The current procedures will be revised to ensure that operability of the alarm circuitry will be confirmed every time prior to entering RHR operation.

Question - When will the isolation valves be leak tested - after power removal?

Response - The RHR isolation valves are leak tested at full system pressure after power is removed from the valves.

Question - Confirm that the RHR isolation valve motor is sized such that the valve cannot open against full RCS pressure.

Response - A review of the valve motor size, opening forces, and system parameters confirm that the maximum

  • differential pressure the valve is expected to be able

- to open against is 1800 psid. Normal RCS system pressure is approximately 2250 psia. RHR system pressure during Mode 1 is less than <50 psig except during RHR pump surveillance testing, when RHR system pressure is expected to be approximately 250 psig.

Therefore, it is considered highly unlikely that the RHR isolation valve would be able to be opened against the normal RCS pressure.