ML20214V814
| ML20214V814 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 11/24/1986 |
| From: | Muller D Office of Nuclear Reactor Regulation |
| To: | Vermont Yankee |
| Shared Package | |
| ML20214E708 | List: |
| References | |
| NUDOCS 8612090848 | |
| Download: ML20214V814 (3) | |
Text
- -
~ - - - - - -
x 7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION VERMONTYANKEENUCLEA'RPOW5RCORPORATION DOCKET NO. 50-271 ENVIRONMENTAL ASSESSMENT AND FINDING OF NO SIGNIFICANT IMPACT The U.S. Nuclear Regulatory Commission (NRC/the Commission) is considering issuance of an exemption from the requirements of Appendix R of 10 CFR 50 to the Vermont Yankee Nuclear Power Corporation VYNPC/the licensee) for the Vermont Yankee Nuclear Power Station located in Windham County, Vermont.
ENVIRONMENTAL ASSESSMENT Identification of Proposed Action: The licensee would be exempted from the requirements of Sections III.G.1 and III.G.2 of Appendix R to 10 CFR 50 that require that automatic fire suppression be installed in four locations, that separation be provided in three locations, and that in two instances equipment necessary to achieve and maintain safe hot shutdown be free of fire damage without taking credit for repairs. Specifically, the repairs would involve connecting a backup battery charger and replacing fuses.
The Need for the Proposed Action: Because' of low combustible loading in the locations being exempted from separation or automatic fire suppression, a fire in one of these areas would be of low intensity and short duration.
i Furthermore, safe shutdown could be effected if a fire pecurred in one of these areas because of the passive protection afforded by such separat'on and l
barriers as exist, and because of the provision of detection systems to alert the fire brigade. The fire brigade could then take action to extinguish the i
8612090848 861201
' ~ ~
PDR ADOCK 05000271 l
F PDR
~
t l
fire. Therefore, automatic fire suppres'sion and additional separation in these locations would not enhance the level of fire protection and are unnecessary.
With regard to the repairs needed in order to achieve and maintain safe hot shutdown, the times in which the repairs are required are well in excess of the times required to perform the repairs considering the proximity of work locations, the provision of necessary tools and equipment, and the simplicity of the actions required.
Environmental Impacts of the Proposed Action: The proposed action would not impact the ability to effect safe shutdown of the plant in the event of a fire in the above mentioned areas and would provide an acceptable level of safety, equivalent to that attained by compliance with Section III.G.of Appen-dix R to 10 CFR 50. On this basis, the Commission concludes there are no significant radiological environmental impacts associated with this proposed exemption.
With regard to potential nonradiological impacts, the proposed exemption involves features located entirely within the restricted areas as defined in 10 1
CFR Part 20.
It does not affect nonradiological plant effl.uents and has no other environmental impact. Therefore, the Codmission concludes that there are no significant nonradiological environmental impacts associated with the proposed exemption.
Alternative Use of Resources: This action involves no use of resources not previously considered in the Final Environmental Statement (construction permit and operating license) for the Vermont Yankee Nuclear Power Station.
l r v
.,---.---,,,,,--,,------r.
,m-,
- ~, - -
~. -
e Agencies and Persons Consulted: The NRC staff based their review in part on an evaluation by the NRC contractor, Franklin Research Center (FRC). Except for FRC assistance the NRC staff did not consult other agencies or persons.
FINDING OF NO SIGNIFICANT IMPACT The Connission has determined not to prepare an environmental impact statement for the proposed exemption.
Based upon the foregoing environmental assessment, we conclude that the proposed action will not have a significant effect on the quality of the human environment.
For further details with respect to this action, see the applications for exemption dated April 24, 1985, August 2, 1985, August 16, 1985, October 31, 1985, August 15, 1986, and June 10, 1986, which are available for public inspection at the Commission's Public Document Room, 1717 H Street, N.W.,
Washington, D.C., and at Brooks Memorial Library, 224 Main Street, Brattleboro, 1
l Vermont.
1
?
Dated at Bethesda, Maryland, this 24th day of November,1986.
FORTHENUCLEARREGULATbRYCOMMISSIO1 8
M' r
Daniel R. Muller, Director BWR Project Directorate #L Division of BWR Licensing I
1
-