ML20042F311

Forwards Application to Amend License DPR-34,providing Tech Spec Changes Needed to Complete Defueling

ML20042F311
Person / Time
Site:	Fort Saint Vrain
Issue date:	04/26/1990
From:	Crawford A PUBLIC SERVICE CO. OF COLORADO
To:	Weiss S Office of Nuclear Reactor Regulation
Shared Package
ML20042F312	List: ML20042F311 ML20042F314 ML20042F315
References
P-90083, NUDOCS 9005080154
Download: ML20042F311 (3)

Text

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P.u blic Service- Public Service -

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P.O. Box 840 '

Denver CO 80201 0840 i

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April 26, 1990. A. Clegg Crawford  !

Fort St. Vrain Vice President Unit No. 1 Nuclear Operations P-90083 ,

U. S, Nuclear Regulatory Commission 4 ATTN: Document Control Desk Washington, D. C. 20555 l ATTN: Mr. Seymour H. Weiss, Director ,

Non-Power Reactor, Decommissioning and Environmental Project Directorate-Docket No. 50-267

SUBJECT:

Proposed Technical Specification' Amendment to Complete -

Defueling '

REFERENCE:

1) PSC Letter, Crawford to Weiss, dated August 16, 1989  ;

(P-89287)

Dear Mr. Weiss:

Fort St. Vrain permanently discontinued nuclear operations'as of August 18, 1989, and has since commenced defueling the reactor.

Currently, twelve regions have been removed from the reactor core and placed in our fuel storage wells. -

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A " Safety Analysis Report for Reactor Defueling" (Defueling SAR) was

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prepared by General Atomics (GA-C19694) and transmitted to the NRC by

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Reference 1). This report described the methodology that will be used to defuel FSV. PSC has also previously submitted three proposed Technical Specification amendments to the Reactor Core' Design Features, Fuel Handling and Storage Systems, and Reactivity Controls 3 in response to NRC requests to incorporate defueling requirements in }

the -Technical Specifications. To speed the processing of the 1 amendments and to accommodate the timely start of Jefueling, the NRC requested that only the items needed to initiate defueling be incorporated in those amendments. Items related to the completion of defueling were removed from the amendments and approval was delayed to a later date. This amendment proposal now submits those Technical Specification changes needed to complete defueling.

PSC is proposing changes in two significant areas. When nine or less fueled regions remain in the core, the shutdown margin assessments currently required by Reactivity Controls Section SR's 4.1.4 and 4.1.6 are no longer meaningful, and would not be required, The Startup Channel count rate is expected to decrease to below the minimum specified level of LCO 4.4.1 as defueling progresses. Before /

this occurs, it is proposed that small neutron sources be placed near 9005080154 900426 (JM i

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the Startup Channel detectors to mair,tain the count rate above the background electrical. noise levels to meet.the4 requirements of LCO

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4.4.1. Use of these small neutron-sources would be permitted when nine or less fueled regions remain in the core. Changes to LC0 4.4.1, SR-5.4.1, and DF 6.1 reflect this intended action. See the' 1

! attachments to this' letter for more detailed information. -

l s l A summary of proposed changes is included as Attachment 1. The proposed changes are included as Attachment -2. A No. Significant Hazards Consideration Analysis is. included as Attachment 3. A Safety Analysis is included as Attachment 4.

If you have any questions concerning'this submittal, please contact j Mr. M. H. Holmes. at (303) 480-6960. ,

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Very truly yours, W

A. Clegg Crawfo d Vice President 4 Nuclear Operations ACC/GMK/km Attachments ,

cc: Regional Administrator, Region IV -

ATTN: Mr. J. B. Baird Technical Assistant ,.

Division of Reactor Projects Robert M. Quillen, Director Radiation Control Division Colorado Department of Health l Mr. Robert Farrell Senior Resident Inspector Fort St. Vrain

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1 . j; UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION 4r In the Matter of the' Facility Operating License)' ,

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Public Service' Company ~of Colorado ) Docket No. 50-2.6/

Fort St.'Vrain. Unit No. 1

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i AFFIDAVIT A. Clegg Crawford, being first duly sworn,. deposes and says: That he'is Vice President, Nuclear Operations, of Public Service Company.

of Colorado, the- Licensee herein, that he has read-the foregoing Application for Amendment to Appendix A of-. the Facility Operating License and' knows the contents thereof, and that the statements and '

matters set forth therein are true and. correct to the- best of his.

knowledge, information and belief, i

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A. Clegg'Crawford l '

Vice President- 1 Nuclear Operations STATE OF COLORADO

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COUNTY OF DENVER

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Subscribe and sworn to bqfore me, a Notary Public on this 26th day of Aprii , 199 0, i

0zlchd [ enuA.o ,

Notary Public l

My commission expires January 6 , 19 9_3, l l

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