ML20116M494

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Suppl to 910204 & 920902 Applications for Amend to License NPF-12,changing Main Steam Safety Valve Setpoint Tolerance from Plus or Minus 1% to Plus or Minus 3%
ML20116M494
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 11/13/1992
From: Skolds J
SOUTH CAROLINA ELECTRIC & GAS CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20116M498 List:
References
NUDOCS 9211200300
Download: ML20116M494 (2)


Text

_ _ _ _.

Bouth Cifolina El$ctnc & Q2s Comp:ny John a

Jenhnume. Sc PWa Nuclear Operabons (803) 34'c4040

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tK)VEleER 13, 1992 Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555 Gentlemen:

Subject:

VIRGIL C. SUMMER NUCLEAR S1ATION DOCKET NO. 50/395 OPERATING LICENSE N0. NPT-12 TECHNICAL SPEClf!CAfl0NS CHANGE REQUEST - MAIN STEAM SAFETY VALVE SE1P0lNTTOLERANCECHANGE(ISP 880018-3)

South Carolina Electric & Gas Company (SCE&G) submitted an amendment request to License NPf-12 to change the Technical Specifications (TS) for the Virgil C. Summer Nuclear Station (VCSNS) in letters dated February 4,1991, and September 9,1992.

lhe amendment request involves increasing the allowed tolerance of the Main Steam Safety Valves (MSSVs) from 11% to 13%. SCE&G has performed a safety evaluation and a No Significant Hazards Determination as required by the Code of federal Regulations, and determined that the amendment posed no safety concerns. Even though the evaluation supports a 13% tolerance, NRC's preference is that VCSNS reset the valve any time the as-found lift pressure is beyond 11% tolerance.

SCELG's position is that if the as-found lift pressure is within the 13% tolerance, the valve does not require any adjustments.

In order to resolve the NRC's concern SCE&G made a commitment in the September 9, 1992, letter to reset the MSSVs to within the 11% tolerance if the as-found lift pressure is beyond the 13% tolerance. The NRC has now subsequently stated that regardless of any technical evidence which supports SCE&G's position, their policy will not allow approval of the amendment without the agreement to reset the MSSVs any time the as-found lift pressure is outside the 11% tolerance.

l SCE&G hereby requests that this letter and the attsched marked up page from Technical Specifications be accepted as an amendment to the previous submittals for the purpose of documenting SCE&G's agreement to reset any MSSVs when surveillance testing discovers that the as-found lift pressure is beyond 11% to'erance.

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G n n e.n I

9211200300 921113 PDR ADOCK 05000395 I

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Document Control Desk ISP 880018 Page 2 of 2 I declare that the statements and matters set forth herein_are true and correct to the best of my, knowledge, information, and-belief.

j Any questions concern ng this matter should be directed to Mr. David Haile at (803) 345-4322.

Very truly yours, Wu o

51 Qc Johh-.k k gt,5%%

1 DCH:1cd c:

0. W. Dixon R.-R. Mahan R. J. WY te S. D. Ebneter General Managers NRC Resident inspector J. 8. Knotts Jr, File ((813.20)

RTS TSP 880018) 1 I

NUCLEAR EXCELLENCE - A SUMMER TRADITIONI

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