ML20215F009

Environ Assessment & Finding of No Significant Impact Re Util Requests for Exemption from Requirements of 10CFR50,App R

ML20215F009
Person / Time
Site:	Three Mile Island
Issue date:	12/12/1986
From:	Edison G Office of Nuclear Reactor Regulation
To:
Shared Package
ML20215F012	List: ML20215F009
References
NUDOCS 8612230211
Download: ML20215F009 (3)

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7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION GPU NUCLEAR CORPORATION, ET AL.

DOCKET NO. 50-289 ENVIRONMENTAL ASSESSMENT AND FINDING 0F N0 SIGNIFICANT IMPACT The United States Nuclear Regulatory Commission (the Commission) is considering issuance of exemptions from the requirements of Appendix R to 10 CFR Part 50 to GPU Nuclear Corporation (the licensee) for ThTee Mile Island Nuclear Station, Unit No. 1 (TMI-1) located in Dauphin County, Pennsylvania.

ENVIRONMENTAL ASSESSMENT Identification of the Proposed Action: The exemptions are related to Sections III.G.2, III.G.3, and III.J of Appendiy P to 10 CFR Part 50, " Fire, Protection For Nuclear Power Facilities Operating Prior to January 1,1979".

Section III.G of Appendix R requires fire protection for equipment important to safe shutdown. Such fire protection is achieved by various combinations of fire barriers, fire suppression systems, fire detectors, and separation of safety trains (III.G.2) or alternate safe shutdown equipment free of the fire area (III.G.3). The objective of this protection is to assure that one train of equipment needed for hot shutdown would be undamaged by fire, and that systems needed for cold shutdown could be repaired within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (III.G.1).Section III.J of Appendix R requires that emergency lighting units with at least an 8-hour battery power supply shall be provided in all areas needed for operation of safe shutdown equipment and in access and egress routes thereto.

The Need for the Proposed Action: Because it is not possible to predict the specific conditions under which fire may occur and propagate, the design basis protective features are specified in the rule rather than the design basis fire.

Plant specific features may require protection different from the measures kk h f

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7-specified in Sections III.G and III.J.

In such cases, the licensee must demonstrate, by means of a detailed fire hazards analysis, that existing protection in conjunction with proposed modifications will provide a level of safety equivalent to the technical requirements of Sections III.G and III.J of Appendix R.

Environmental Impacts of the Proposed Action: The proposed exemptions provide a level of safety equivalent to the technical requirements of Sections III.G and III.J of Appendix R.

The exemptions will not change the types, or allow an increase in the amounts, of effluents that may be released offsite. The exemptions would not result in an increase in individual or cumulative occupational radiation exposure. Therefore, the Commission concitides that there are no significant radiological environmental impacts associated with the proposed exemptions.

With regard to potential nonradiological impacts, the proposed exemptions involve features located entirely within the restricted areas as defined in 10 CFR 20. They do not affect nonradiological plant effluents and have no other environmental impact. Therefore, the Commission concludes that there are no significant nonradiological environmental impacts associated with the proposed exemptions.

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 Three Mile Island Nuclear Station, Unit 1.

Agencies and Persons Consulted: The NRC staff reviewed the licensee's request and did not consult other agencies or persons.

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• FINDING OF NO SIGNIFICANT IMPACT The Comission has determined not to prepare an environmental impact statement for the proposed exemptions.

Based upon the foregoing envirnnmental assessment, the Commission concludes 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 i tters requesting the exemptions dated February 11, 1985, November 7, 1985, May 17, 1986 and August 19, 1986, which are available for public inspection at the Commission's Public Document Room, 1717 H Street, N.W., Washington, D.C., and at_the Government Publications Section, State Library of Pennsylvania, Education Building, Commonwealth and Walnut Streets, Harrisburg, Pennsylvania 17126.

Dated at Bethesda, Maryland, this 12th day of December,1986 FOR THE NUCLEAR REGULATOPY COMMISSION

'D Gordon E. Edison, Actino Director PWR Project Directorate #6 Division of PWR Licensing-B

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