ML20247F642
| ML20247F642 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 09/11/1989 |
| From: | Black S Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20247F645 | List: |
| References | |
| NUDOCS 8909180227 | |
| Download: ML20247F642 (4) | |
Text
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4-7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION TENNESSEE VALLEY AUTHORITY DOCKET NOS. 50-259, 50-260 AND 50-296 ENVIRONMENTAL ASSESSMENT AND FINDING OF e
NO SIGNIFICANT IMPACT The U. S. Nuclear Regulatory Commission (NRC/the Commission) is consider-ing issuance of temporary amendments to Facility Operating License Nos. OPR-33, DPR-52 and DPR-68 to the Tennessee Valley Authority (TVA/the licensee), for the Browns Ferry Nuclear Plant, Units 1, 2 and 3, located at the licensee's site near Decatur, Alabama.
ENVIRONMENTAL ASSESSMENT Identification of Proposed Action:
The proposed temporary amendments would revise the Browns Ferry Nuclear Plz.nt Technical Specifications (TS) to permit operation of Unit 2 for one cycle before all necessary design modifications to the Control Room Emergency Ventilation System (CREVS) are enmpleted.
The proposed temporary amendments are in accordance with the licensee's application for temporary amendments dated February 14, 1989, as supplemented by letter dated July 14, 1989.
The Need for the Proposed Action:
The proposed changes address a design fit.w in the CREVS identified by the licensee.
Under the licensee's bounding accident event, the CREYS is postu-lated to not be able to provide filtered air to control room and emergency personnel.
The proposed changes would state that the CREVS is considered to be 4
inoperable because it does not meet its design basis for essentially zero
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2 unfiltered in-leakage. The requested changes would permit, with NRC approval, the operation for Unit 2 for one cycle, without all modifications completed to meet the bounding accident event identified by the licensee.
Environmental Impa_ct_ o_f,,t,h,e,,Prppp,se,d,,Ac,t_ipn,:
The Commission has completed its evaluation of the proposed revisions to the Technical Specifications.. The staff concludes that the safety considera-tion associated with operation of Unit 2 before all necessary design modifications to CREVS have been completed would not adversely affect plant safety. The proposed changes have no adverse effect on the probability or consequences of any accident previously analyzed. No changes are being made in the types or amounts of any radiological effluents that may be released offsite. There is no significant increase in the allowable individual or cumulative occupational radiation exposure. Accordingly, the Commission concludes that this proposed action would result in no significant environmental impact.
With regard to potential non-radiological impacts, the proposed amendment involves systems 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 significant non-radiological environmental impacts associated with the proposed amendment.
The Notice of Consideration of Issuance of Amendment and Opportunity for Hearing in connection with this action was published in the FEDERAL REGISTER on April 18, 1969 (54 FR 15572).
The licensee's letter of July 14, 1989 provided clarification that the projected radiation doses to control room operators and Technical Support Center personnel were within the acceptable limit as defined
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l in 10 CFR Part 50, Appendix A, General Design Criteria 19. No requests for hearing were received and the State of Alabama did not have any comments.
Alternativetothelropo,sedAction:
o Since the Commission has concluded that there are no significant environ-mental impacts that would result from the proposed action, any alternatives with equal to or greater environmental impacts need not be evaluated.
The principal alternative would be to deny the requested teirporary amendments. This would not reduce the environmental impacts and would result in a delay in the Unit 2 restart.
Alternative ___Use of Re_ sources These actions associated with the granting of the proposed temporary amendments as detailed above au not involve the use of resources not previously considered in connection with the Final Environmental Statement (FES) (con-struction permit and operating license) for the Browns Ferry Nuclear Plant, Units 1, 2 and 3, dated September 1, 1972.
Agen,cies and Persons Consulted The NP.C staff reviewed the licensee's submittal that supports the proposed temporary amendments discussed above and did not consult other agencies or persons.
FINDING OF NO SIGNIFICANT,,I,MP,A,CT The Commissiori has determined not to prepare an environmental impact statement for the proposed terrporary amendnents.
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.
,s 4-For further details with respect-to this action, see the request for the temporary amendment changes dated February 14,1989,. as t?tpplemented by letter -
dated July 14, 1989, which are available for public inspection at the.
' Commission's Public Document Room, 2120 L Street, N.W., Washington, D.C., and at the NRC's Local Public Document Room located at the Athens Public Library, South Street, Athens, Alabama 35611.
Dated at Rockville, Maryland this lith day of September 1989.
FOR THE NUCLEAR REGULATORY COMMISSION h
4 Suzanne U. Black, Assistant Director for Projects TVA Projects Division Office of Nuclear Reactor Regulation t
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