ML20246K984

Application for Amend to License DPR-34,changing Tech Specs to Document Improvements to Battery Surveillance Procedures

ML20246K984
Person / Time
Site:	Fort Saint Vrain
Issue date:	07/14/1989
From:	Crawford A PUBLIC SERVICE CO. OF COLORADO
To:	Hebdon F Office of Nuclear Reactor Regulation
Shared Package
ML20246K988	List: ML20246K984 ML20246K992
References
P-89264, NUDOCS 8907180315
Download: ML20246K984 (9)

Text

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A. Clegg Crawford UuciehIpe*r"[tions July 14, 1989 Fort St. Vrain Unit No. 1 P-89264 U. 5. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.'C. 20555 ATTN: Mr. Fredrick J. Hebdon, Director Project Directorate IV Docket No. 50-267

SUBJECT:

Proposed Technical Specification Change-Emergency Power Systems

REFERENCES:

1) PSC letter, Brey to Calvo, dated May 27, 1988, (P-88184)

2) NRC letter, Heitner to Williams, dated April 19, 1989, (G-89145)

Dear Mr. Hebdon:

This is an amendment request to the Fort St. Vrain Technical Specifications to document improvements to Battery Surveillance Procedures. These improvements have been made in accordance with the Technical Specification Upgrade Program (TSUP), IEEE Standard 450-1987, battery vendor recommendations, Regulatory Guide 1.129, Revision 1, and Westinghouse Standard Technical Specifications.

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P-89264 . July 14, 1989' History:

PSC has- been in 'the process of preparing an. upgraded-Technical-Specification using . the Westinghouse  : Standard Technical Specifications for guidance as submitted in P-88184, Reference 1. The .

NRC presented comments on the submittal -in G-89145,- Reference.c2.

These Technical . Specifications have been .further revised to accommodate the new Lead Antimony Batteries installed in late 1988.

The additional revisions-are described in Attachment 1.

The revisions-to'SR 5.6.2 add a surveillance'of the battery chargers that will. be ' performed on an eighteen month frequency :and a Performance Discharge Test that will be regularly performed on a 60 month frequency. The Service Discharge Test' currently required by SR.'

5.6.2 is. being revised -from a 12 month ~ frequency.to an;18~ month frequency in accordance with the Standard Technical Specifications.

The . Service Discharge Test on each. battery was ' performed . in late -

1988. The Performance Discharge Test.on each . battery will be performed in place of- the -Service Discharge Test in mid 1990.or sooner. IEEE-450 requires the Performance Discharge Test within 2 years of the installation of a new battery. The'mid 1990 s'chedule-will satisfy'this requirement. The' battery < charger surveillance will be '-performed during a plant shutdown at the first outage ofL one week duration or more fo116 wing the effective date of this amendment 'or

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sooner.

'Three attachments are included with this proposed amendment:

Attachment 1 - Summary.of Proposed Changes Attachment 2 - Proposed Changes Attachment 3 - No Significant Hazards Consideration Analysis This submittal includes proposed revisions to SR 5.6.1 and SR 5.6.2 sections.

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.$ LP-89264$ -3 ' July la, 1989

If you .have any. questions or comments . concerning. the enclosed -

infonnation please call Mr. M. H. Holmes at (303) '480-6960.

Very trul.y purs,-

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A. Clegg Crawford.

Vice President, t!uelear Operations I -- ACC/JMW/km.

Attachments cc: Regional Administrator, Region IV ATTN: . Mr. T. F. Westerman, Chief

- Projects Section B Mr.-Robert Farrell Senior Resident Inspector Fort St. Vrain Mr. Robert M.'Quillen.

Colorado Department of Health 1

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UNITED. STATES OF AMERICA NUCLEAR. REGULATORY COMMISSION In the Matter )

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Public Service Comoary of Colorado  :) Docket No, 50-267

' Fort St. Vrain Unit No. 1 )

AFFIDAVIT A. Clegg Crawford, being'first duly sworn, deposes and says: That he is Vice President,; Nuclear Operations, of Public Service Comp 3ny of Colorado, -the: Licensee herein, that he has read the foregoing Application for Amendment to Apptndix A'of Facility Operating License and knows the' contents.therenf, and that the statements and matters set forth therein.are true and correct to the best of his knowledge,

-information and belief.

W A. Clegg~Crawforf W

Vice President, Nuclear Operaticas STATE OF (O{LnCdC )

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COUNTY OF Sntdcite ) .

i Subscribe and sworn to before me, a Notary Public on this

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No~tary Public My commission expires Q lb , 193;L'

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BEFORELTHE:.

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.UNITEDSTATES'NUCLEARREGULATORYLCOMMISSION r

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'N .In the' Matter of the' Facility Operating License)

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~ PUBLIC:-SERVICE. COMPANY.-0F COLORADO )

' Application for Amendment to Appendix A of Facility Operating License License No. DPR-34 *

OF THE PUBLIC SERVICE COMPANY OF COLORADO FOR.THE

' FORT ST. ' VRAIN NUCLEAR GENERATING STATION This-application:for Amendment to Appendix A'of

- Facility Operating License, Licensi No. DPR-34,

- is submitted for NRC review and approval.

Respectfully submitted, PUBLIC SERVICE COMPANY OF COLORADO.

By-A. Clegg Crawford Vice President, Nuclear Operations KELLY,.STANSFIELD & 0'DONNELL James.K. Tarpey Mark A. Davidson

'Public Service Company Building Denver, Colorado 80202 Attorneys for Applicant zw---

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.F ATTACHMENT 1 To P-89264

SUMMARY

OF PROPOSED CHANGES

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P-89264 Attachment 1 Page 1 of 2 Section Description of Change SR 5.6.1 Incorporate nomenclature changes for Standby and Basis Diesel Generator set (s).

SR 5.6.2 Repipce entire SR with new surveillance requirements and Basis for the three Batteries, IA, 18, and 1C based on Westinghouse Standard Technical Specifications, IEEE Standard 450-1987, Re3ulatory. Guide 1.129, TSUP, and vendor recommendations.

SR 5.6e2.a.2 Battery voltage on float charge has been revised from the TSUP-va'oe of 120.4 volts total to 2.15 volts

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per cell to account for the size of Batteries IA and IB possibly varying between 58 and 60 cells. The value of 2.15 volts per cell is based on vendor recommendations.

SR 5.6.2.b Batte ry overcharge voltage criteria has been revised from TSUP value of 150 volts to 145 volts since the battery chsrgers are not capable of exceeding 145 volts.

SR 5.6.2.b.3 The . average electrolyte temperature of at least 20% of the cells for Station Batteries 1A and IB has been revised from a TSUP value of above 60 degrees F to above 70 degrees to accommodate the recent load profile analysis as documented in EE-92-0012, dated October 28, 1988 and EE-92-0013, dated November 4, 1988.

SR 5.6.2.c.4.c ihe required current for Battery Charger ID has been revised from a TSUP vilue of 310 amperes to 345 amperes since Charosr ID current limiter is set at 345 amperes SR 5.6.2.e.1 The performance discharge parameters for Batteries 1A and IB have been revised from the TSUP values.

The average discharge rate has been changed from 310 smperes to 340 ampere; and the possible test

+ermination points of 1.81 volts per cell and 3.2 t ours have been revised to 1.75 volts per cell and 7.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> to accomodate the increase to 60 cells and the recent battery load profile analysis.

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P-89264 Attachment'l J Page 2'of 2

- SR 5.6.2Lf. The_ requirement for a Performance. Discharge Test

- every.18 months ha's been revised from the TSUP ano Westinghouse Standard. Technical' Specification values-of degradation for Batteries IA and ;1B.

The-'new~'value of 95% has been established to provide margin-above the 90% of. rated . capacity.

required to service the four hour load profile for Batteries 1A and 18.

TABLE 5.6.2 The pilot cell. specific gravity value in the TSUP

-and NOTES has been revised from 2 1~.205 to 2 2.210

'to accommodate a. change in electrolyte referenceslevel. ,

The new cells have a low electrolyte' level and a'high electrolyte level marx whereas the.old cells had only. N one level reference mark in the middle. The new value is twferenced to the low level mark.

Note ~ (6) was removed from the allowable value for-the average specific Lgravity. for all connected cells to accommodate the new cells. The charging current' on the Lead Antimony Batteries will increase with : age' and will, .therefore, be _

- monitored administratively..

3r SR 5.6.2 Basis The pilot cell specific gravity has been ' revised; from the TSUP value of- 0.010' below the.

); manufacturer's full charge-specific gravity to a specific value of 1.210. The l'.210 value is in accordance with the Load Profile Analysis documented in EE-92-0012, dated October 1M3, 1988 and EE-92-0013, dated November 4, 1988.

The allowable value for an individual cell's specific gravity ha; been changed from a TSUP value of 0.040 below the full charge specific gravity to 0.020 below average of all connected cells. This change was made to accommodate vendor recommendations and the load profile analysis.

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ATTACHMENT 2 To P-89264 PROPOSED CHANGES

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