ML20005G350
| ML20005G350 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 01/10/1990 |
| From: | Thoma J Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20005G347 | List: |
| References | |
| NUDOCS 9001190031 | |
| Download: ML20005G350 (4) | |
Text
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UNITED STATES NUCLEAR REGULATORY COMMISSION j
CONSUMERS POWER COMPANY ENVIRONMENTAL ASSESSMENT AND FINDING 0F NO SIGNIFICANT IMPACT The U. S. Nuclear Regulatory Comission (the Comission) is considering the issuance of an exemption from the requirements of 10 CFR Part 50, Appendix R.
l-Section 111.G.I.a to the Consumers Power Company (the licensee) for the Big Rock Point Plant located in Charlevoix County, Michigan.
ENVIRONMENTAL ASSESSMENT Identification of the Proposed Action:
The exemption would grant relief from the requirements of Section 111.G.I.a of Appendix R to 10 CFR Part 50 which requires fire protection features capable of limiting fire damage so that one train of systems necessary to achieve and maintain hot shutdown conditions is free of fire damage. The exemption is technical since the licensee must demonstrate the ability to perform tasks requiredtoprovidewaterfromtheDomineralizedWaterSystem(DWS)tothe
.instrumentaircompressorsandtoinstallthespareServiceWater(SW) pump motor on the pump and the spare SW pump motor power cable from the emergency diesel generator connected to the spare motor. The water to the instrument air compressors are necessary to cool the air compressors so that air can be supplied to open two valves to supply DWS water to the emergency condenser (EC). The EC is needed to cool the Primary Coolant System (PCS) so that hot I
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that one SW pump could provide coolant to bring the plant to cold shutdown.
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The Need for the Proposed Action:
To safely shutdown the Big Rock point Plant in the event of certain c
postulated fire scenarios in the screenhouse, the plant must be able to provide coolingwatertotheemergencycondenser(EC)viatheDWStoestablishhot i
shutdown. Within seventy-two hours, the plant must be capable to maintain cold shutdown using the Service Water System.
The proposed exemption is needed because this method involves the temporary attachment of a hose to maintain hot shutdown. This action is considered a ryair by Appendix R guidelines.
r Environrental Impac,ts of the Proposed Action:
l The proposed exemption would provide cooling water to the instrument air compressors such that there is no increase in the risk of not achieving safe shutdown at the Big Rock Point plant. Consequently, the probability of achieving safe shutdown has not been decreased and the post-accident radiological releases would not be greater than previously determined nor does the proposed 1
exemption otherwise affect radiological plant effluents. Therefore, the
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Comission concludes that there are no significant radiological environmental impacts associated with the proposed exemption.
I With regard to non-radiological impacts, the proposed exemption involves features located entirely within the restricted area as defined in 10 CFR Part 20.
It does not affect non-radiological plant effluents and has no other environmental impact.
Therefore, the Commission concludes that there are no L
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3 significant non-radiological environmental impacts associated with the proposed exemption.
, Alternative to the Proposed Action:
It has been concluded that there is no measurable impact associated with the proposed exemption and associated license anendment; any alternative to t
the exemption will have either no environnental impact or greater environmental in. pact.
The principal alternative would be to deny the requested amendnent. This would not reduce environmental impacts of plant operation and would result in reduced operational flexibility.
Alternative U,se of Resources:
This action involves no use of resources beyond the scope of resources used during norrel plant operation.
Agencies and Fersons Consulted:
The NRC staff reviewed the licensee's request and did not consult other agencies or persons.
FINDING OF NO SIGNIFICANT IMPACT Based upon the environmental assessment, the NRC staff concludes that the proposed action will not have a significant effect on the quality of the human environment. Accordingly, the Consnission has determined not to prepare an environn. ental impact statenant for the proposed exemption.
For further details with respect to the proposed action, see the licensee's letter dated October 14, 1986 supplemented by letters dated February 27, 1987 at:0 February 22, 1988. These letters are available for public inspection at the
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- Cctenissien's Public Docur.ent Room 2320 L Street, NW, Washington, D.C., and at I
North Central Michigan College,1515 Harvard Street, Petoskey, Michigan 49770.
j Dated at Bethesda, Maryland, this 10th day of January 1990.
I FOR THE ilVCLEAR REGULATORY COMMISSION
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John O. Thoma, Acting Director Project Directorate Ill-1 Division of Reactor Projects - III, IV, V & Special Projects Office of i;uclear Reactor Regulation
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