ML20214P575

Recommends That Util Propose Tech Specs Based on Annual Allowable Values Re Plant Protective Sys Trip Setpoints. Response Requested within 60 Days of Ltr Date

ML20214P575
Person / Time
Site:	Fort Saint Vrain
Issue date:	11/26/1986
From:	Heitner K Office of Nuclear Reactor Regulation
To:	Robert Williams PUBLIC SERVICE CO. OF COLORADO
References
TAC-47416, NUDOCS 8612040272
Download: ML20214P575 (4)

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o UNITED STATES g

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NUCLEAR REGULATORY COMMISSION b

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November 26, 1986 Docket No. 50-267 Mr. R. O. Williams, Jr.

Vice President, Nuclear Operations Public Service Company of Colorado P. O. Box 840 Denver, Colorado 80201-0840

SUBJECT:

PLANT PROTECTIVE SYSTEM SETPOINTS

Reference:

Letter:

K. Heitner (NRC) to R. O. Williams, Jr. (PSC),

Subj.:

Request for Additional Information for Plant Protective System Trip Setpoints and Surveillance Requirements for Fort St.

Vrain Nuclear Generating Station, dated October 16, 1986.

We have held several discussions by telephone with your staff concerning plant protective system (PPS) setpoints, as discussed in our letter referenced above. These discussions concerned how allowable values for instrumentation errors were to be reflected in your proposed Technical Specifications (TS).

Cumulative instrumentation errors can be accounted for on either a monthly or an annual basis in accordance with ANSI standards. However, the fact that some portions of the system are checked monthly and some annually leads to different allowable values to account for these errors.

We recommend that you propose TS based on the annual (or refueling interval) allowable values. Monthly allowable values should be the basis for your administrative controls. The administrative controls should thus minimize the potential for exceeding the TS limits.

In view of the additional changes you will need to make, we agree to extend the date of your response to the above referenced letter. Your response should be submitted within 60 days of the date of this letter.

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Nr. R. O. Williams, Jr..

The reporting and/or recordkeeping requirements contained in this letter affect few than ten respondents; therefore, OMB clearance is not required under P.L.96-511.

Sincerely, b$

Kenneth L. Heitner, Project Manager Standardization and Special Projects Directorate Division of PWR Licensing-B Office of Nuclear Reactor Regulation cc: See.next page

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Nr.R.O. Williams,Jr.

2-The reporting and/or recordkeeping requirements contained in this letter affect:few than' ten respondents; therefore, OMB clearance is not required 1

under P.L.96-511..

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Sincerely, original signed by Kenneth L. Heitner, Pro'ect Manager j

Standardization and Special Projects Directorate Division of PWR Licensing-B

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r 3-Nr. R. O. Williams Public Service Company of Colorado Fort St. Vrain cc:

Mr. D. W. Warembourg, Manager Albert J. Hazle, Director Nuclear Engineering Division Radiation Control Division Public Service Company Department of Health of Colorado 4210 East lith Avenue P. O. Box 840 Denver, Colorado 80220 Denver, Colorado 80201 Mr. David Alberstein, 14/159A Mr. J. W. Gahm, Manager GA Technologies, Inc.

Nuclear Production Division Post Office Box 85608 Public Service Company of Colorado San Diego, California 92138 16805 Weld County Road 19-1/2 Platteville, Colorado 80651 Mr. H. L. Brey, Manager Nuclear Licensing and Fuel Division Mr. P. F. Tomlinson, Manager Public Service Company of Colorado Quality Assurance Division P. O. Box 840 Public Service Company of Colorado Denver, Colorado 80201 16805 Weld County Road 19-1/2 Platteville, Colorado 80651 Senior Resident Inspector U.S. Nuclear Regulatory Commission Mr. R. F. Walker P. 0. Box 840 Public Service Company of Colorado Platteville, Colorado 80651 Post Office Box 840 Denver, Colorado 92138 Kelley, Stansfield & 0'Donnell Public Service Company Building Comitment Control Program Room 900 Coordinator 550 15th Street Public Service Company of Colorado Denver, Colorado 80202 2420 W. 26th Ave. Suite 100-D Denver, Colorado 80211 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive. Suite 1000 Arlington, Texas 76011 Chairman, Board of County Commissioners of Weld County, Colorado l

Greeley, Colorado 80631 Regional Representative Radiation Programs l

Environmental Protection Agency l

1 Denver Place 999 18th Street, Suite 1300 Denver, Colorado 80202-2413