ML20205E852

Notice of Availability of Environ Assessment & Finding of No Significant Impact Re Application for Amend to License NPF-29,revising Tech Specs to Authorize Spent Fuel Pool Expansion

ML20205E852
Person / Time
Site:	Grand Gulf
Issue date:	08/12/1986
From:	Butler W Office of Nuclear Reactor Regulation
To:
Shared Package
ML20205E850	List: ML20205E845 ML20205E852
References
TAC-57619, NUDOCS 8608190009
Download: ML20205E852 (4)

Text

7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION MISSISSIPPI POWER & LIGHT COMPANY MIDDLE SOUTH ENERGY, INC.

SOUTH MISSISSIPPI ELECTRIC POWER ASSOCIATION DOCKET NO. 50-416 NOTICE OF AVAILABILITY OF ENVIRONMENTAL ASSESSMENT AND FINDING OF NO SIGNIFICANT IMPACT The U.S. Nuclear Regulatory Commission (the Commission) is considering issuance of an amendment to Facility Operating License No. NPF-29, issued to Mississippi Power & Light Company, Middle South Energy, Inc., and South Mississippi Power Association, (the licensees), for operation of the Grand Gulf Nuclear Station, Unit 1, located in Claiborne County, Mississippi.

Identification of Proposed Action: The amendment would consist of changes to theoperatinglicenseandTechnicalSpecifications(TSs)andwouldauthorize an increase of the storage capacity of the spent fuel pool (SFP) from 1270 fuel assemblies to 2324 fuel assemblies and an increase of the storage capacity i

of the upper containment pool (UCP) from 170 to 800 fuel assemblies.

The amendment to the TSs.is yesponsive to the licensee's submittal, dated May 6, 1985. The NRC staff has prepared an Environmental Assessment of the Proposed Action, " Environmental Assessment Related to the Modification of the Spent Fuel Storage Racks at Grand Gulf Nuclear Station, Unit 1, Facility Operating License No. NPF-29 Mississippi Power & Light Company, Middle South Energy. Inc., South Mississippi Electric Power Association," dated August 12, 1986.

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. Summary of Environmental Assessment: The Final Generic Environmental Impact Statement (FGEIS) on Handling and Storage of Spent Light Water Power Reactor Fuel (NUREG-0575), Volumes 1-3, concluded that the environmental impact of interirc. storage of spent fuel was negligible and the dose of the various alternatives reflects the advantage of continued generation of nuclear power with the acccrrpanying spent fuel storage. Because of the differences in SFP designs, the FGEIS recommended licensing SFP expansions on a case-by-case basis.

For Grand Gulf Nuclear Station, Unit 1, the expansion of the storage capacity of the spent fuel pool and the upper containment pool will not create any significant additional radiological effects or non-radiological environmental impacts.

The additional whole body dose that might be received by an individual at the site boundary is less than 0.1 millirem per year; the estimated dose to the population within a 50-mile radius is estimated to be less than 0.1 person-rem per year. These doses are small compared to the fluctuatior.:: in the annual dose this population receives from exposure to background radiation.

The increases in occupational exposures for the proposed operation of the l

modified spent fuel pool are estimated to add less than one percent to the total annual occupational radiation doses at the plant. This small increase in occupational radiation doses should not affect the licensee's ability to main-i tain individual occupational doses within the limits of 10 CFR 20.

The only non-radiological discharge altered by the modifications to the SFP and UCP is the waste heat rejected to the Mississippi River. The total l

. load to the Mississippi River will be increased less than 0.03 percent. Thus, there is no significant environmental impact attributable to the discharge waste heat from the station due to this very small increase.

FINDING OF NO SIGNIFICANT IMPACT The staff has reviewed the proposed modifications to the facilities relative to the requirements set forth in 10 CFR Part 51. Based on this assessment, the staff concludes that there are no significant radiological or non-radiological impacts associated with the proposed action and that the issuance of the proposed amendment to the license will have no significant iripact on the quality of the human environment. Therefore, pursuant to 10 CFR 51.31, an environmental impact statement need not be prepared for this action.

For further details with respect to this action, see (1) the application for amendment to the Technical Specifications dated May 6,1985 and supple-mental letters dated July 29, August 15, August 30, September 11, September 12, November 1, and December 18, 1985, and March 14, March 15, June 5, June 9, and July 25, 1986, (2) the FGEIS on Handling and Storage of Spent Light Water Power Reactor Fuel (NUREG-0575), (3) the Final Environmental Statement for Grand Gulf Nuclear Station, Unit 1, issued September 1981, and (4) the Environmental Assess-ment dated August 12, 1986 These documents are available for public inspection I

at the Commission's Public Document Room, 1717 H Street, N.W., Washington, D.C.

i 20555 and at the Hinds Junior College, McLendon Library, Raymond, Mississippi 39154.

. Dated at Bethesda, Maryland, this 12th day of August 1986.

FOR THE NUCLEAR REGULATORY COMMISSION Walter R. Butler, Director BWR Project Directorate No. 4 Division of BWR Licensing I

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