ML20150C444

Forwards Safety Evaluation Re Seismic Analysis of Bldg 10 & Walkover Structure.Seismic Analysis Methods Used Conservative Relative to FSAR & Acceptable

ML20150C444
Person / Time
Site:	Fort Saint Vrain
Issue date:	03/10/1988
From:	Heitner K Office of Nuclear Reactor Regulation
To:	Robert Williams PUBLIC SERVICE CO. OF COLORADO
Shared Package
ML20150C448	List: ML20150C444 ML20150C454
References
TAC-55287, NUDOCS 8803180254
Download: ML20150C444 (3)

Text

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March 10, 1988 L 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:

STRUCTURAL EVALUATION OF FORT ST. VRAIN BUILDING-10 AND WALK 0VER STRUCTURE (TAC NO. 55287)

References:

1. PSC Letter from Warembourg to Berkow (P-86489) dated July 28, 1986, with Attachments

7. PSCLettarfromWaterbourgtoCalvo(P.87170) dated May 29 -1987, with Attachment

3. PSC Letter from Warembourg to Calvo (P-87316) dated September 9, 1987, with Attachment The staff has completed the review of the subject references concerning 'the seismic analysis of Building 10 and Walkover Structure of the Fort St. Vrain Nuclear Generating Station. We found that the seisnic analysis methods used are conservative relative to the FSAR and are therefore acceptable. Our findings and conclusion are contained in the Safety Evaluation, which is enclosed.

Sincerely, Original signed by Kenneth L. Heitner, Project Manager Project Directorate - IV Division of Reactor Projects - III.

IV, Y and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

As stated 8803180254 880310 PDR ADOCK G5000267 PDR cc w/ enclosure:

See next pace DISTRIBUTION RcketJile q NRC PDR Local PDR PD4 Reading DRdA/J. Collins J. Calvo P. Noonan D. Vigginton OGC E. Jordan J. Partlow ACRS(10)

PD4 Plant File S. P. Chan I

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{ j wAssiNorow. o. c. 20sss k*....,/ March 10,1988 Docket No. 50-?67 Mr. R. O. Willians, Jr.

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

SUBJECT:

STRUCTURAL EVALUATION OF FORT ST. VRAIN BUILDING 10 ANDWALKOVERSTRUCTURE(TACNO.55287)

References:

1. PSC Letter from Warembourg to Berkow (P-86489) dated July 28, 1986, with Attachments 4

2. PSC Letter from Warembourg to Calvo (P-87170) dated May 29, 1987, with Attachment

3. PSC Letter from Warembourg to Calvo (P-87316) dated September 9, 1987, with \ttachment i

The staff has completed the review of the subject references concerning the seismic analysis of Building 10 and Walkover Structure of the Fort St. Vrain Nuclear Generating Station. We found that the seismic analysis methods used are conservative relative to the FSAR and are therefore acceptable. Our j findings and conclusion are contained in the Safety Evaluation, which is enclosed.

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Sincerely,

, d.w Kenneth L. Heitner, Pro.iect Manager Project Directorate - IV Division of Reactor Projects - f!!,

IV, Y and Special Projects l

Office of Nuclear Reactor Regulation i

Enclosure:

As stated cc w/ enclosure:

See next page l

t I

Mr. R. O. Williams, Jr.

Public Service Company of Colorado Fort St. Vrain ec:

Mr. D. W. Warembourg, Manager Albert J. Hazle, Director Nuclear Engineering Division Radiation Control Divisien Public Service Company Department of Fealth uf Colorado 4210 East lith Avenue P. O. Box 840 Denver, Colorado 80270 Denver, Colorado 80201-0840 Mr. David Alberstein, 14/159A Mr. R. O. Williams, Jr., Actino 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/?

Platteville, Colorado 80651 Mr. H. L. Brey, Manager Nuclear licensing and Fuel Division Mr. P. F. Tomlinsor, Manager Public Service Conpany of Colorado Quality Assurance Division P. O. Box 840 Public Service Company of Colorado Denver, Colorado 80201-0840 16805 Weld County Road 19-1/2 Platteville, Colorado 80651 Senior Resident Inspector U.S. Nucletr Regulatory Commitsion Mr. R. F. Walker

'. O. Box 640 Public Service Corpany of Colorado Platteville, Colorado 80651 Post Office Pox 840 Denver, Colorado 80201-0840 Kelley, Stansfield & 0'Donnell Public Service Company Building Commitment Control Program Rocn 900 Coordinator 550 15th Street Public Service Company of Colorado ,

Denver, Colorodn 80702 2420 W. 26th Ave. Suite 100-0 Denver. Colnrado 80211 Regirnal Administrator, Reginn 1Y 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 Radiation Programs j Environmental Protection Agency ,

1 Denver Place 099 18th Street, Suite 1300 Denver, Colorado 8020?-2413  ;

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