ML20094D530

Responds to RAI Re License Amend Request 95-03 Revising TS 3.4.6.2, RCS Operational Leakage Pressure Isolation Valve Table

ML20094D530
Person / Time
Site:	Seabrook
Issue date:	10/30/1995
From:	Feigenbaum T NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20094D532	List: ML20094D530 ML20094D534
References
NYN-95087, TAC-M92959, NUDOCS 9511060051
Download: ML20094D530 (3)

Text

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North Atlantic Energy Service Corporation 4

. Or(L 11 P.o. Box 300 o % Atlantic Seasteek, Nir 03874 (603) 474-9521, Fax (603) 474-2987 The Northeast Utilities System Ted C. Feigenbaum l NYN- 95087 Seni r Vice President &

l Chief Nuclear Officer October 30,1995 I l

l United States Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk i

Reference:

(a) Facility Operating License NPF-86, Docket No. 50-443 (b) North Atlantic Letter NYN-95-056," License Amendment Request 95-03: Revision to Technical Specification 3.4.6.2 Reactor Coolant System Operational Leakage Pressure I isolation Valve Table, (TAC No. M92959)", July 24,1995, Ted C. Feigenbaum to USNRC (c) Telephone Discussion, A. De Agazio (NRC) and A. Legendre (North Atlantic), October 25,1995 l

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Subject:

Response to Request for Additional Information re: License Amendment Request 95-03 l

1 Gentlemen:

North Atlantic Energy Service Corporation (North Atlantic) submitted License Amendment Request 95-03 l on July 24,1995, [ Reference (b)]. License Amendment Request 95-03 proposed a change to the Seabrook Station Technical Specifications to relocate Table 3.4-1, " Reactor Coolant System Pressure Isolation Valves" from Technical Specification 3.4.6.2, " Reactor Coolant System Operational Leakage" to the Technical Requirements l Manual. The NRC requested additional information regarding Lice 'se Amendment Request 95-03 on October 25, l 1995 [ Reference (c)]. North Atlantic has enclosed, in response to the NRC request, a revised markup of Technical Specification page 3/4 4-23. The revised markup of Technical Specification page 3/4 4-23 includes a footnote which had initially been proposed to be relocated from Technical Specification Table 3.41 to the Technical Requirements Manual. The footnote will be maintained in the Technical Specifications per the guidance of NRC Generic Letter 91-08. l The proposed footnote on Technical Specification page 3/4 4-23 exempts the Residual ifcat Removal (RHR) System pumps 8A and 8B suction isolation valves and their bypass check valves from Surveillance Requirement 4.4.6.2.2d (leakage testing within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of How through the valve). Currently, Technical Specification Table 3.41 excepts the RilR suction isolation valves from Surveillance Requirement 4.4.6.2.2d. The RilR suction isolation valves bypass check valves included in the proposed footnote are two 1/2" check valves which are part of a design modification which will be installed during the upcoming refueling outage to address the pressure locking susceptibility for the RilR suction isolation valves. The RIIR suction isolation valves bypass check valves will be subject to leakage testing in accordance with Surveillance Requirements 4.4.6.2.2a, b, c and e.

It is proposed that the RIIR suction isolation valves bypass check valves be excepted from the leakage testing requirement of Surveillance Requirement 4.4.6.2.2d due to the expectation that How through the valves will not occur and if any flow does occur it will be a very small volume and not detectable to control room operators due to the passive design of the system. Compliance with Surveillance Requirement 4.4.6.2.2d is not practical for the RHR suction isolation valves bypass check valves, therefore the footnote exception from the requirement is proposed.

9511060051 951030 PDR ADOCK 05000443 P PDR I(

i U.S. Nustearyegulatory Commission October 30,1995 Attention: Document Control Desk Page two Should you have any questions regarding this letter please contact Mr. James M. Peschel, Regulatory Compliance Manager at (603) 474-9521 extension 3772. -

Very trul yours,

/OO #fa #

Ted C. Feigenbaum TCF/ALL:sm Enclosures cc: Mr. Thomas T. Martin Regional Administrator U.S. Nuclear Regulatory Commission Region 1 475 Allendale Road King of Prussia, PA 19406 Mr. Albert W. De Agazio, Sr. Project Manager Project Directorate 1-4 Division of Reactor Projects U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. John B. Macdonald NRC Senior Resident inspector P.O. Box 1149 Seabrook,NH 03874 Mr. George L. Iverson, Director New Hampshire Office of Emergency Management 107 Pleasant Street Concord, NH 03301 l

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North Atlantic October 30,1995 ENCLOSURE I TO NYN-95087

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