ML20244C937

Advises That Environ Assessment & Safety Evaluation to Support 880624 Proposed Amend Specifying Limit of 3,229 Fuel Assemblies,Plus Twenty Defective Fuel Containers,Will Not Be Issued by Start of Refueling Outage

ML20244C937
Person / Time
Site:	Millstone
Issue date:	04/06/1989
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Mroczka E NORTHEAST NUCLEAR ENERGY CO.
References
TAC-68157, NUDOCS 8904210065
Download: ML20244C937 (3)

Text

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NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555

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\**.+j April 6,-1989 R ,

Docket No. 50-245 Mr. Edward J.: Mroczka,' Senior Vice President'

' Nuclear Engineering and Operations Northeast Nuclear Energy Company- q

! P.O. Box 270 ,

Hartford, Connecticut 06141-0270-  ;

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SUBJECT:

SPENT FUEL P00L EXPANSION (TAC NO. 68157) -

MILLSTONE NUCLEAR POWER STATION, UNIT NO. 1 ,

-By letter dated June 24. 1988, Northeast Nuclear Energy Company (NNECO) submitted an application for amendment to the Millstone. Unit 1 Technical Specifications (TS) to specify the maximum storage capacity of the spent fuel pool. The proposed amendment would specify a limit of 3229 fuel assemblies, plus 20 defective fuel containers. This proposed limit' takes into consi-deration your plans to increase' the storage capacity of the spent fuel pool from its present capacity of 2184 fuel assemblies.

Currently, the Millstone Unit 1 TS do not have a limit on the number of fuel ,

asremblies that can be stored in the spent fuel pool. However, the plant's. l design basis, as detailed in Amendment No. 39 issued June 30, 1977, considered the effects of a maximum of 2184 fuel assemblies in the spent fuel pool. At this time, the spent fuel pool has capacity for only 452 fuel assemblies (1732 of the 2184 storage cells are occupied). A full reactor core contains 580 fuel assemblies and a refueling entails the replacement of one-third of those.

fuel assemblies. If NNEC0 were to offload the entire core for refueling -

purmses, ap)roximately 324 of the 1045 new fuel storage cells in the new 1 rac cs would a required to temporarily store the fuel in the spent fuel pool.

"; The staff's review is now complete. However, the environmental assessment and safety evaluation to: support the proposed amendment will not be issued by the start of the refueling outage (scheduled to start April 8,1989). The results of staff's review indicate that it is acceptable to temporarily increase the storage capacity above 2184 fuel assemblies during the short duration of the refueling operation (about three weeks long). This finding of acceptability is contingent upon the licensee modifying plant procedures to include a requirement to evaluate the rack-to-rack spacing after a seismic event equivalent to or greater than the operating basis earthquake. After '

the refueling operation is complete, the number of fuel assemblies stored in i 8904210065 p

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s (Mr.*EdwardJ.Hroczka 2-l the spent fuel pool will be below the 2184 limit. The environmental assessment and safety evaluation report in support of'your proposed amendment should be issued during your refueling outage.

Sincerely, John F. Stolz, Director Project Directorate I-4

. Division of Reactor Projects I/II Office of Nuclear Reactor Regulation cc: See next page-DISTRIBUTION

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' Mr. (dward J. Mroczka . Millstone Nuclear Power Station Northeast Nuclear Energy Company Hnit No. 1 cc:

Gerald Garfield, Esquire R. M. Kacich, Manager

' Day, Berry and Howard Generation Facilities Licensing Counselors at Law- Northeast- Utilities Service Company-

' City Place Post Office Box 270

' Hartford, Connecticut 06103-3499 Hartford, Connecticut 06141-0270-W. D. Romberg, Vice _ President D. O. Nordquist Nuclear Operations Manager of Quality Assurance

' Northeast Utilities Service Company' Northeast Nuciear Energy Company Post Office Box 270 Post Office Box 270 Hartford, Connecticut 06141-0270 Hartford, Connecticut 06141-0270 Kevin McCarthy, Director Regional Administrator Radiation Control. Unit Region I Department of Environmental Protection U. S. Nuclear Regulatory Commission State Office Building 475 Allendale Road Hartford, Connecticut 06106 . King of Prussia, Pennsylvania 19406 Bradford S. Chase, Under, Secretary First Selectmen Energy Division Town of Waterford Office of Policy and Management 'dall of Records 80 Washington Street 200 Boston Post Road Hartford, Connecticut 06106 Waterford, Connecticut 06385-S. E. Scace, Station Superintendent W. J. Raymond, Resident Inspector Millstone Nuclear' Power Station Millstone Nuclear Power Station Northeast Nuclear Energy Company c/o U. S. Nuclear Regulatory Commission Post Office Box 128 -

Post Office Box 811 Waterford, Connecticut 06385 > Niantic, Connecticut 06357 l J. P. Stetz, Unit Superintendent Millstone Unit No. 1 Northeast Nuclear Energy Company Post Office Box 128 Waterford, Connecticut '6385 0

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