ML20213D665

Ack Receipt of Util Re Leak Rates for Prestressed Concrete Reactor Vessel.Staff Does Not Intend to Review Revised Calculations Unless Requested.Util Must Continue to Utilize FSAR Leakage of 0.2% Per Day

ML20213D665
Person / Time
Site:	Fort Saint Vrain
Issue date:	11/04/1986
From:	Heitner K Office of Nuclear Reactor Regulation
To:	Robert Williams PUBLIC SERVICE CO. OF COLORADO
References
TAC-56565, NUDOCS 8611120182
Download: ML20213D665 (3)

Text

'

, N ember.4, 1986 Docket No. 50-267 Nr. R. 0. Williams, Jr.

Vice President, Nuclear Operations Public Service Company-of Colorado Post Office Box 840 Denver,' Colorado 80201-0840

SUBJECT:

PCRV LEAK RATES j l

We acknowledge receipt of your letter dated August 13,1986(P-86497) concerning leak rates for the Fort St. Vrain (FSV) Prestressed Concrete l Reactor Vessel (PCRV). Since you have not requested staff review of the revised leak rate calculation, nor plan to utilize these results in any safety analysis, the staff does not intend to review your revised

! calculations at this time.

However, PSC must continue to utilize the FSAR leakage of 0.2 percent per ,

day for all calculations at FSV requiring conservative results, such as l

licensing matters. If the revised leak rates are used in any calculations, j l

.they should be clearly labeled as not reviewed or approved by the NRC. '

Sincerely, f

Kenneth L. Heitner, Project Manager Standardization and Special

' Projects Directorate Division of PWR Licensing-B.

Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION:

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\...../ November 4,1986 Docket No. 50-267 Mr. R. O. Williams, Jr.

Vice President, Nuclear Operations Public Service Company of Colorado Post Office Box 840 Denver, Colorado 80201-0840

SUBJECT:

PCRV LEAX RATES We acknowledge receipt of your letter dated August 13,1986(P-86497) concerning leak rates for the Fort St. Vrain (FSV) Prestressed Concrete Reactor Vessel (PCRV). Since you have not requested staff review of the revised leak rate calculation, nor plan to utilize these results in any safety analysis, the staff does not intend to review your revised calculations at this time.

However, PSC must continue to utilize the FSAR leakage of 0.2 percent per day for all calculations at FSV requiring conservative results, such as licensing niatt'ers. If the revised leak rates are used in any calculations, they should be clearly labeled as not reviewed or approved by the NRC.

Sincerely, w

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

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O Mr.-R. O. Williams l

-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 i Post Office Box 85608 Public Service Company of Colorado San Diego, California 92138 16805 Weld County Road 19-1/2

• Platteville, Colorado 80651 t

Mr. H. L. Brey, Manager Nuclear Licensing and Fuel Division Mr. L. W. Singleton, 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 Commitment 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 i 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 Greeley, Colorado 80631 Regional Representative i Radiation Programs v

Environmental Protection Agency 1 Denver Place 99918th Street, Suite 1300 Denver, Colorado 80202-2413

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