BVY-91-114, Forwards Rev 1 to VT Yankee Nuclear Power Station Cycle 15 Core Operating Limits Rept

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Forwards Rev 1 to VT Yankee Nuclear Power Station Cycle 15 Core Operating Limits Rept
ML20086C674
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 11/18/1991
From: Tremblay L
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20086C679 List:
References
BVY-91-114, NUDOCS 9111250042
Download: ML20086C674 (1)


Text

.

VERMONT YANKEE Nuc' LEAR POWER CORPORATION

.g@ % Ferry Road. Brattleboro, VT 05301-7002

( ) ENGINEEPING OFRCE

  • gy- +g7n V M N gT m [.!

/ ROLTON MA 'M 740

[* W;R: 7716711 November 18,1991 United States Nuclear Regulatory Commission B" #

. ATTN: Document Control Desk Washington, DC 20555

References:

a. License No. DPR-28 (Docket No. 50-271)
b. Vennont Yankee Core Operating Limits Report, Cycle 15, Revision 1, dated October,1991.

Subject:

Vermont Yankee Cycle 15 Core Operating Limits Report

Dear Sir:

In accordance with Section 6.7.A.4 of the Vermont Yankee Technical Specifications, please find enclosed a mid-cycle revisica to the Vermont Yankee Core Operating Limits Report (COLR) for Cycle 15 [ Reference (b)].

This revision affects COLR pages (i), (ii), (3),(9), and (13). It incorporates the results of a recently completed sensitivity study performed with approved methods to detemiine the impact on the MCPR operating limits from exposure windows on both the previous and current operating cycles, and from coastdown operation during the current opeating cycle. The sensitivity study results show that the Cycle 15 MCPR operating limits must be adjusted to assure full power operation up to the exposure of 9647 mwd /St. The adjustment of 0.01 ACPR will be added from EOFPL-lGWD/St to EOFPL when the turbine trip without bypass is the limiting uar,rient.

These changes provide the MCPR operating limits far the duration of Cycle 15. Should you have any questions regarding the enclosed material, please contact this office.

Very truly yours, VERMONT Y ANKEi: NUCLEAR POWER CORPORATION i

NDYC\ .s M A t Leonard A. Tremblay, Jr. \

Senior Licensing Engineer '

i cc: USNRC Region I Administrator

! USNRC Resident inspector - VYNPS l USNRC Project Manager - VYNPS

,' \

911.1250042 911118 n' PIR fDOCK 03000271 1 4:,1 P POR

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