ML20077E335

Forwards Revised COLR for Quad-Cities Unit 2 Cycle 13 Consistent W/Gl 88-16,revising Refs & Section 4.2 Re Unit 2 Operating Limit MCPR

ML20077E335
Person / Time
Site:	Quad Cities
Issue date:	12/06/1994
From:	Aitken P COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
Shared Package
ML20077E341	List: ML20077E335 ML20077E342
References
GL-88-16, PCA-94-006, PCA-94-6, NUDOCS 9412120242
Download: ML20077E335 (3)

Text

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C:mm:nwealth Edisrn Quad Citras Nuclear Power Station 22710 206 Avenue North Cordova, lilinois 61242-9740 Telephone 309/654 2241 PCA-94-006 December 6,1994 Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk

Subject:

Quad Cities Station Unit 2 Revised Cycle 13 Core Operating Limits Report NRC, Docket No. 50-265

Dear Sir:

The purpose of this letter is to advise you of a change to Commonwealth Edison's (Comed)

Quad Cities Station Unit 2 Cycle 13 Core Operating Limits Report (COLR) consistent with Generic Letter 88-16.

It was discovered that the turbine bypass valve opening times are non-conservative with respect to the system design and reload licensing analyses. As a result, Comed has concluded (OSR 94-37) that a change to the Unit 2 Operating Limit MCPR was necessary.

A revised copy of the Unit 2 Cycle 13 COLR has been provided.

If there are any further questions regarding this matter, please contact this office.

caw C b Paul C. Aitken System Engineering Supervisor Quad Cities Station PCA\JP\db Attachment - Quad Cities Station Unit 2 Cycle 13 Core Operating Limits Report cc: J.B. Martin - Regional Administrator, Region III R. Pulsifer - Project Manager, NRR C. Miller - Resident Inspector tQj 9412120242 941206 "

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Dcc:mb:r 5,1994 (I NFS:BSS:94-200 Messrs: William Pierce Jeff Miller

Subject:

Request for On-Site Review of Proposed Changes to Quad Cities Unit 2 Cycle 13 Core Operating Limits Report

References:

1. Core Operating Limits Report, Quad Cities' Unit 2 Cycle 13, April,1994.

2. " Recommendations for Quad Cities Unit 2 to resolve Main Turbine Bypass Opening Uncertainty", John M. Freeman to E. A.

McVey, December 5,1994, NFS:RSA 94-179.

3. " Quad Cities Turbine Bypass Valve Opening Time Measurement," letter from Paul C. Aitken (QCISYS) to Ed McVey, December 1,1994.

4. " Recommendations for Dresden and Quad Cities Stations to Resolve Main Turbine Bypass Valve Opening Time Uncertainty,"  ;

Edward A. McVey to E. D. Eenigenburg, et. al., September 27, l 1994, NFS:BSS:94-166.

5. GE letter, " Bounding Estimate of Operating Limit MCPR for Turbine Bypass Valves inoperative" R. E. Kingston to R. W. Tsai, i September,1994, REK:079.

The purpose of this memorandum is to present a package suitable for On-Site l Review of the Quad Cities Station Unit 2 Cycle 13 Core Operating Limits l Report (COLR) for the current operating cycle (Reference 1). This package should be implemented based on the conclusions of Reference 2 which evaluated the Main Turbine Bypass Valve Opening Time results specified in Reference 3.

The appropriate NFS personnel have reviewed the enclosed package. The following attachments are provided:

A. Revised COLR for Quad Cities Unit 2 Cycle 13 B. NFS 50.59 Evaluation This change is being initiated due to the failure of the Unit 2 main turbine bypass valves (Reference 3) to open in the time required by the transient documents

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D:c mbir 5,1994 used in the cycle licensing basis. This change incorporates a bounding and conservative Operating Limit MCPR for feedwater controller failure (FWCF) when the main turbine bypass valves fail to open (Reference 5). The current (Reference

4) administratively applied OLMCPR (1.42) in the control room will be implemented into the Q2C13 COLR.

If you have any questions, please contact John Meyer at x3822.

{ h M C-Edward A. McVey BWR Support Services Supervisor EAM:JJM:pc Enclosure cc: J. M. Piekut R. W. Tsai D. A. Barringer / J. K. Wheeler T.P.Shannon File: QA File NFS-CF (w/o Atts.)

BSS-CF 1

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