ML18142A143

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Notifies of Plans for Cycle 8 Redesigned Reload Core.All Irradiated Fuel Assemblies to Be Used in Cycle 7 Redesigned & Core Confirmed Sound Through Insp Program.No Unreviewed Safety Issue Will Exist Due to Redesigned Reload Core
ML18142A143
Person / Time
Site: Surry Dominion icon.png
Issue date: 12/10/1984
From: Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Harold Denton, Varga S
Office of Nuclear Reactor Regulation
References
365A, NUDOCS 8412210071
Download: ML18142A143 (2)


Text

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 W. L. STEWART VxcE PRESXDENT NUCLEAR 0PERA.TXONS December 10, 1984 IE FILE COPY, Mr. Harold R. Denton, Director Serial No. 365A Office of Nuclear Reactor Regulation E&C/GS:ses:2008N Attn: Mr. Steven A. Varga, Chief Docket No. 50-280 Operating Reactors Branch No. 1 License No. DPR-32 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY RELOAD INFORMATION FOR CYCLE 8 SURRY POWER STATION UNIT NO. 1 Surry Unit No. 1 completed its seventh cycle of operation on September 27, 1984. The purpose of this letter is to advise you of our plans for the Cycle 8 redesigned reload core.

During Cycle 7 operation, Vepco experienced levels of primary coolant radioactivity which," although within the limits of the Technical Specifications, were indicative of fuel element defects in the core. As a result of the primary coolant activity, V.epco ha-s examined the Cycle 7 fuel assemblies to identify the assemblies containing fuel defects. To date, the fuel rod examination program has consisted of vacuum sipping, visual inspection via binoculars and high magnification TV, and use of fuel assembly cleaning equipment.

As a result of these inspections, Vepco has developed a revised Cycle 8 reload core design. All irradiated fuel assemblies to be used in the Cycle 8 redesigned core have been confirmed to be sound through the inspection program.

The Cycle 8 redesigned core was analyzed in accordance with the methodology documented in Westinghouse Topical Report WCAP-9272, 11 Westinghouse Reload Safety Evaluation Methodology. 11 The results of this analysis indicated that no key analysis parameters will become more limiting during Cycle 8 operation than the values assumed in the currently applicable safety analyses. The Cycle 8 reanalysis demonstrated that the current Technical Specifications are appropriate and require no additional changes.

The analyses necessary to support Cycle 8 operation have been performed and reviewed by our techn{cal staff, using the Westinghouse methodology and analysis techniques. In addif1on, a review has been performed by both the Station

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  • Ntfcl:ea.r Sa}ety and Operating Committee and the Safety Evaluation and Control Staff*: It has been determined that no unreviewed safety questions as defined in lO~GFR 50.59 will exist as a result of the Cycle 8 redesigned reload core.

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VIRGINIA ELECTRIC AND POWER COMPANY TO Mr. Harold R. Denton e

Technical Specifications changes are not required as a result of Cycle 8 operation with a redesigned core loading pattern. Cycle 8 is currently scheduled to begin operation on December 14, 1984.

Should you have any questions, please contact us at your earliest convenience.

Very truly yours, cc: Mr. James P. 0 Reilly 1

-;}?JH~~A Regional Administrator Region II Mr. J. Don Neighbors NRC Project Manager - Surry Operating Reactors Branch No. 1 Division of Licensing Mr. D. J. Burke NRC Resident Inspector Surry Power Station