ML19207C227

Application to Amend Tech Specs to Change Limiting Conditions of Core Thermal Power & Helium Flow Rate & Amount of Fuel Oil Required to Maintain Power Operated Relief Valve Cooling in Loss of Forced Circulation Situations

ML19207C227
Person / Time
Site:	Fort Saint Vrain
Issue date:	08/29/1979
From:	Millen C PUBLIC SERVICE CO. OF COLORADO
To:
Shared Package
ML19207C223	List: ML19207C222 ML19207C227
References
NUDOCS 7909100508
Download: ML19207C227 (14)

Text

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i BllfEP2 Tif E lluITED STATES NUCL::AR PIGL"uATORY C072fISSIO:i In the !!atter of the Facility Oncrating License)

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PUliLIC SERVICE C01:PA'iY OF COLORADO

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Application for Anendmnt to Appendix A of Facility Operating License Licenae No. DP R-34

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OF THE PUdLIC SERVICE COMPA'iY OF COLORADO FOR TiiE "0RT ST. VRAIN iiUCLl:AR C10?ERATI?iG SYATIO!T This application for Anendaent to Appendix A of Facility Op eratin;; Licens e, Licenne :10 DP R-34, is aubnitted for :iRC reviev and approval.

Frapectfully submitted, PLILIC S ERVICE CO?DTTY OF COLOFX00 y

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ac, Senior Vice President SFIELD & 0' DO:!'iELL

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• Donnel obert 9iorpson Public Servic, Conoony Building Denve r, Coloraco 02U2 Attorneys f o r Anplican t o.,,,q'*

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g6 STATE OF COLOPADO

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CITY AfD ColIITY OF D;NVER)

C. K.11111en, being first duly sworn, deposes and says;

'niat he is Senior Vice President of Operations of Public Service Company of Colorado, the Licensee herein; that he has read the foregoing Application for Amend: cut to Appendix A of Facility Operating License and knows the contents thereof, and that the staterents and natters set forth therein are true and correct to the beat of his knavledge, information and b elief.

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C. K. Stillen Subacribed and nuorn to before te this G

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this delay period can be allowed without compromising the integrity of the fuel. As a result of many transient analyses, the delay period has been con-servatively set at 100 seconds for transients resulting in a power-to-flow ratio above 2.5 but less than or equal to 15 and 60 seconds if the power-to-flow ratio is greater than 15.

The allowable time, af ter the delay time, for all transients which lead to a power-to-flow ratio in excess of 2.5 is set at 2 minutes which is also the allowable time for a power-to-flow ratio of 2.5 given by Figure 3.1-1.

The limitation of allowable operating time to a value of 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> for all operations with a power-to-flow ratio above the curve of Figure 3.1-2 and below a value of 1.17 provides a conservative limit since this is the allowable time for a power-to-flow ratio of 1.17 given by Figure 3.1-1.

Limiting the continuous operating time in this range of power-to-flow ratios to a value of 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> is additionally conservative.

The 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> continuous operating time limit must be included as a fraction of the 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> allowable time.

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ATTAG MENT 2 33013.1

- me Basis for Specification LCO 4.2.17 The ACM diesel generator provides power independently of the plant elec-trical distribution network to various valves, lighting, and pieces of equip-ment.

That equipment provides an alternate means of maintaining PCRV cooling during the Loss of Forced Circulation situation described in the Final Safety Analysis Report, Section 14.10.

The 10,000 gallons of fuel provides for 108 hours0.00125 days <br />0.03 hours <br />1.785714e-4 weeks <br />4.1094e-5 months <br /> operation of the gen-erator with full ACM load, which is adequate time for obtaining additional fuel from off site sources.

Reason for Change The information used to initially establish the time that 10,000 gallons of fuel oil would provide for full ACM load used a fuel consumption rate which was more conservative than that determined by actual test.

A fuel oil consump-tion test was performed which established that 10,000 gallons of fuel oil will provide for 41/2 days (108 hours0.00125 days <br />0.03 hours <br />1.785714e-4 weeks <br />4.1094e-5 months <br />) operation with full ACM load of 900 KW.

3.301bd