ML20151Y960
| ML20151Y960 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 08/15/1988 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20151Y924 | List: |
| References | |
| NUDOCS 8808290109 | |
| Download: ML20151Y960 (2) | |
Text
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO.
TO FACILITY OPERATING LICENSE NO. NPF-62 ILLINOIS POWER COMPANY, ET AL CLINTON POWER STATION, UNIT 1 DOCKET NO. 50-461
1.0 INTRODUCTION
By letter dated Octoser 30, 1987, Illinois Power Company requested changes to the Clinton Power Station Unit 1 Technical 3pecifications.
Package Number 13 of Attachment 3 to that letter contained proposed changes to the battery portion of the Technical Specifications.
The following evaluation addresses only those changes identified in Package Numler 13 of the licensees' letter.
2.0 EVALUATION Package Number 13 of Attachment 3 to the licensees' October 30, 1987 letter requested a change to Technical Specification 4.8.2.1.d.2.b. to accurately reflect the 4-hour Division II battery emergency loading profile. The purpose of this profile is to define the level of loading in amperes that the battery would have to supply for a specific time period during an emergency condition with the battery charger inoperable.
The Technical Specification requires a demcnstration once every 18 months during shutdown that the battery can supply a duany load of that profile or that it can supply the actual emergency loads.
A review conducted by the licenseet detennined that a Division II load (Fire Protection distribution panel) was not considered for this profile I
during a previous plant modification review. The proposed Technical i
Specification change therefore increases the emergency loading profile of the Division II battery by 10 amperes. This increases tha first, second, and third periods of the battery emergency loading profile to 462 amperes, 296 amperes, and 108 amperes respectively.
The licensees state that the battery capacity has been evaluated using the new inading profile to ensure its capability of supporting required design basis accident loads. The staff has detennined that the change in battery load is not significant in comparison to the battery capacity ar.d that the batteries are capable of supplying the new loads now and at the end of their twenty year life per IEEE 485.
8808290109 880815 PDR ADOCK 05000461 P
PNV
3.0 ENVIRONMENTAL CONSIDERATION
Pursuant to 10 CFR 51.21, 51.32, and 51.35, an environmental assessment and finding of no significant impact have been prepared and published (53 FR 30359) in the Federal Register on August 11, 1988 Accordingly, based upon the Environmental Assessment, the Comission has determined that the issuance of this amendment will not have a significant effect on the quality of the human environment.
Based on the relttively small increase in battery loading and the battery's capability of supplying the new loading, the staff concludes that the Division II battery will continue to provide its original 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> endurance under the new emergency loading profile. The staff therefore approves this Technical Specification change request.
4.0 CONCLLSION The staff has concluded, based on the considerations discussed above, that: (1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such activities will be conducted in compliance with the Comission's regulations, and (3) the 'wsuance of the amendments will not be inimical to the comon defense and security nor to the health and safety of the public.
Principal Contributor:
J. Lazevinick, SELB/ DEST Dated: August 15, 1988 l
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