ML20153H057

Forwards Safety Evaluation Re 850828 Submittal Concerning Bldg 10 & Walkover Structure.Designs Acceptable,Per FSAR Requirements for Category 1 Bldgs.Confirmatory Analysis, Addressing Lack of Clearance Between Structures,Requested

ML20153H057
Person / Time
Site:	Fort Saint Vrain
Issue date:	02/19/1986
From:	Berkow H Office of Nuclear Reactor Regulation
To:	Walker R PUBLIC SERVICE CO. OF COLORADO
Shared Package
ML20153H062	List: ML20153H057 ML20153H073
References
TAC-55287, NUDOCS 8602280590
Download: ML20153H057 (3)

Text

._ . - -

February 19, 1986 Docket No. 50-267 DISTRIBUTION:

DocketEle;yDCrutchfield SSPD Reading FMiraglia NRC PDR Local PDR

_ DCS Mr. R. F. Walker, President NSIC Public Service Company of Colorado PNoonan Post Office Box 840 JDosa Denver, Colorado 80201 KHeitner Olynch

Dear Mr. Walker:

HBerkow i

SUBJECT:

STRUCTURAL EVALUATION OF FORT ST. VRAIN BUILDING 10 AND WALK 0VER STRUCTURE 4

Based upon the information provided by your staff in a letter dated August 28, 1985, we have completed our structural evaluation of Fort St. l Vrain's Building 10 and Walkover Structure. The results of our i evaluation are contained in the enclosed Safety Evaluation. ,

l We have concluded that Building 10 and the Walkover Structure were i designed in accordance with the requirements specified in the FSAR for Category I buildings. However, we are concerned about the apparent lack of clearance between the Walkover Structure and Building 10. It appears that these two structures could impact each other during the postulated 1 earthquake. You are requested to address this apparent impact potential and submit a confirmatory analysis to us on this matter within 90 days of the date of this letter.

If you have any questions or comments, please contact Kenneth Heitner, our Project Manager for your facility at (301) 492-8288.

The information requested in this letter affects fewer than 10 respondents; therefore OMB clearance is not required under P.L.96-511.

Sincerely, Original signed by Herbert N. Berkow, Director Standardization and Special 8602280590 860219 Projects Directorate PDR ADOCK 05000267 p PDR Division of PWR Licensing-B Office of Nuclear Reactor Regulation

Enclosures:

As stated

! cc: See next page . /\

ac SPD DP .SSPD DPWRL-B:SSPD KHeitner DP R -B:SSPD Olynch D h % SSPD HBerRow

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UNITED STATES

! NUCLEAR REGULATORY COMMISSION 1

j WASHINGTON, D. C. 20555 i February 19, 1986

%...../

Docket No. 50-267 1

Mr. R. F. Walker, President Public Service Company of Colorado l Post Office Box 840 ,

Denver, Colorado 80201  !

l

Dear Mr. Walker:

i l

SUBJECT:

STRUCTURAL EVALUATION OF FORT ST. VRAIN BUILDING 10 AND WALK 0VER l STRUCTURE l Based upon the information provided by your staff in a letter dated ,

August 28, 1985, we have completed our structural evaluatinn of Fort St.  !

Vrain's Building 10 and Walkover Structure. The results of our evaluation are contained in the enclosed Safety Evaluation.

We have concluded that Building 10 and the Walkover Structure were designed in accordance with the requirements specified in the FSAR for Category I buildings. However, we are concerned about the apparent lack of clearance between the Walkover Structure and Building 10. It appears that these two structures could impact each other during the postulated eartheuake. You are requested to address this apparent impact potential and submit a confirmatory analysis to us on this matter within 90 days of the date of this letter.

If you have any questions or comments, please contact Kenneth Heitner, our Froject Manager for your facility, at (301) 492-8288.

The information requested in this letter affects fewer than 10 respondents; therefore OMB clearance is not required under P.L.96-511. 1 Sincerely, i

/

% f' L H bert N. Berkow, Director r-Standardization and Special Projects Directorate Division of PWR Licensing-B  !

Office of Nuclear Reactor Regulation

-y Enclosure : -

As stated cc: See next page

Mr. R. F. Walker 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. L. W. Singleton, Manager Public Service Company of Colorado Quality Assurance Division P. O. Box 840 Fort St. Vrain Nuclear Station Denver, Colorado 80201 16805 Weld County Road 19-1/2 i Platteville, Colorado 80651 Senior Resident Inspector U.S. Nuclear Regulatory Commission P. 0. Box 640 Platteville, Colorado 80651 Kelley, Stansfield & 0'Donnell Public Service Company Building Room 900 550 15th Street Denver, Colorado 80202 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Chairman, Board of County Commissioners of Weld County, Calorado Greeley, Colorado 80631 j i

Regional Representative i Radiation Programs Environmental Protection Agency 1800 Lincoln Street Denver, Colorado 80203 _ ,, -

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