ML20065E697
| ML20065E697 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 09/27/1990 |
| From: | Quay T Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20065E698 | List: |
| References | |
| NUDOCS 9010020268 | |
| Download: ML20065E697 (4) | |
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' UNITED STATES NUCLEAR REGULATORY WMMISSIONL j
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-ENTERGY~0PERATIONS; INC.. ET AL.-
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' GRAND GULF NUCLEAR STATION. UNIT 1 DOCKET NO. 50-416-
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- ENVIRONMENTAL ASSESSMENT AND FINDING OF t
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NO SIGNIFICANT-IMPACT
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LThe U. S.- Nuclear Regulatory Comission (the Commission)' is considering 4
Lissuance.of an' amendment to Facility Operating License No. NPF-29, issued to:
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Entergy' Operations,Inc..fthe' licensee),foroperationof-theGrandGulfi c: 1
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Nuclear Station,: Unit-1, located in Claiborne County, Mississipp;. -
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Identification of-Proposeo Action
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,The proposed amendment would increase the fuel enrichment and' core a
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average burnup relating to extended fue. irradiation.
~The proposed action is.in accordance with the:11censee's' application t
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,a for amendsient in; support of. Cycle 5' reload operations dated June 8,1990,.
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1 and the esiticality analysis for~ th'e Cycit 5-reload fuel submitted'on d
3 April 26,-1990.
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fThe Need for the-Proposed u tion-l 4
.The proposed changes are.,eeded to allow the licensee' the flexibility; of' extending-the fuel irradiation,.thereby. permitting operation 'or longere g
Yu ifuel cyclei.
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Environmental Impacts of the Proposed Action pq j
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, The Commitsion has. completed its evaluation of'the proposed changes to-s -
The proposed rev'isions.
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i ithe; Technical l Specifications (TS) for Fuel Cycle 5.
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would permit use of fuel enrichments up to 3.80 percent U-235 and: burn 9p
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- levelsupto40gigawattdayspermetricton(GWD/MT).-_Thepreviousmaximum fuel enrichment was 3.47 percent and burnup_was 34 GWD/MT. The safety
. considerations associated with: reactor' operation'with slightly higher enrichment and slightly extended fuel irradiation have been evaluated by the -
NRC staff..The staff has concluded that such changes would not adversely; z
affect pinnt safety. The proposed changes have no adverse effect on.the f
probability of any accident. The increased burnup may slightly change.the
, y n; mix of~ fission products that might be released in the event of-a serious.
accident, but such small changes would not significantly affect the-consequences of serious accidents. No changes are being made in the types or, amounts of any radiologicci effluents that may be released offsite and-t there,isnosignificant(increaseinallowable.individualorcumulative occupational radiation exposure. Therefore, the Comission concludes that this' proposed action would result in no significant radiological impact.
With regard to. potential nonradiological_ impacts of reactor. operation p
with extended irradiation, the proposed changes to the TS involve systems clocated within the restricted ~ area as-defined in-10 CFR Part'20. The
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proposed changes will not result in a:messurable change-to the nonradiol-cigical plant effluents and therefore will not have any other environmental-impact. The Comission concludes ~ that' there are no significant: nonradiol-ogical' impacts associated with the proposed amendment.
The environmental impacts of transportation-resulting from the use off higher enrichment fuel and extended irradiation are discussed in the staff assessment entitled, "NRC Assessment of the Environmental Effects oft
. Transportation Resulting from Extended Fuel Enrichment _and Irra'diation,"
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which was published in the Federal Register on' August 11,1988(53-FR-30355)., This action was in connection with the Shearon Harris Nuclear Power t
Plant, Unit.I. Environmental Assessment and Finding of No Significant Impact.
As indicated therein, the environmental cost contribution of transportation of'the increases in the fuel enrichment up to 5% and irradiation.. limits up to 60 GWD/MT are either unchanged or may, in fact, be reduced from those summarizedinTableS-4,as'setforthin10CFR51.52(c). Those findings are applicable to the proposed. amendment for Grand Gulf Nuclear Station, Unit 1.
Fe, Grand Gulf Nuclear Station, 'Init 1, the core thermal, power level at which the plant-_is licensed to operate, 3830 megawatts,' exceeds the 3800 megawatts assumed in the analysis of 10 CFR 50.52. -The;onlyf change in:
environmental, impact from that sumarized in Table S-4~ for this higher power isLaninsignificantincrease'(lessthanonepercent)intheheat-per irradiated fuel cask in-transit.
Therefore, the Comission-concludes that there are no significant radiological or nonradiological environmental: impacts associated with the-i proposed changes.
The Notice of Consideration of Issuance of_-Amadment and Opportunity for Hearing in connection with this action was published in.the FEDERAL REGISTER cn July 25,1990;(55FR30297). No req' vest for hearing or petition for leave to intervene was filed followingithis notice'.
Alternative to the Proposed Action Since the. Commission concluded that there are no significant environmental i
effects that would result:from the proposed action, any alternatives with equal-
-or. greater environmental impacts need not be evaluated. The principal alternative.
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fwould be to deny the requested amendment. This would not reduce-environmental impacts of-plant operationiand would result in reduced operational flexibility.
Alternative Ose of Resources This action does not' involve the use of any-resources not previously -
considered in the Final Environmental Statements-related to the operation.
of Grand; Gulf Nuclear; Station, Units 1 and 2, dated-Sep.tember 1981.
Agencies and Persons Consulted-
-The NRC staff reviewed the-licensee's request and did not consult other-agencies or persons.
FINDING OF'NO SIGNIFICANT !MPACT
'The' Comission has determined not to~ prepare an environmental impact :
statement for the proposed license amendment.
L Based upon the foregoing environmental assessment, we conclude that the proposed action will not have a significant effect on the quality of the human
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environment'.
For further information with respect'to this action,-see thezlicensee's suk 'ttals; dated April 26, 1990, and June 8,1990, which4are' available for public inspection at the Comission's'Public Document Room 2120 L Street, N.W., Washington,- D;C. 20555 and at the Hinds Junior College; McLendon Library, Raymond, Mississippi j 39154.;
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- Dated at Rockville, Maryland, this 27th day of-. September 1990.
j FOR THE NUCLEAR REGULATORY COMMISSION
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Theodore R, Quay, Acting Director Project birectorate IV-1 Division of Reactor Projects - III, IV, V'and Special Projects Office of Nuclear' Reactor Regulation 4
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