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Safety Evaluation Report Related to the License Renewal of the Millstone Power Station, Units 2 and 3 (NUREG-1838)

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NUREG-1838 (PDF 3.89 MB)

Publication Information

Manuscript Completed: August 2005
Date Published: October 2005

Division of Regulatory Improvement Programs
Office of Nuclear Reactor Regulation
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

This safety evaluation report (SER) documents the technical review of the Millstone Power Station (MPS), Units 2 and 3, license renewal applications (LRAs) by the staff of the U.S. Nuclear Regulatory Commission (NRC) (the staff). By letter dated January 20, 2004, Dominion Nuclear Connecticut, Inc. (Dominion or the applicant) submitted the LRAs for MPS in accordance with Title 10, Part 54, of the Code of Federal Regulations (10 CFR Part 54). Dominion is requesting renewal of the operating licenses for MPS Units 2 and 3, (Facility Operating License Numbers DPR-65 and NPF-49, respectively) for a period of 20 years beyond the current expiration dates of midnight July 31, 2015, for Unit 2 and midnight November 25, 2025, for Unit 3.

The MPS units are located on an approximately 500-acre site in the town of Waterford, CT, on the north shore of Long Island Sound. The NRC issued the construction permits for MPS Units 2 and 3 on December 12, 1970, and August 9, 1974, respectively. The operating licenses were issued by the NRC on September 26, 1975, for Unit 2 and January 31, 1986, for Unit 3. MPS Unit 2 consists of a two-steam-generator, four-coolant-loop, pressurized-light-water-reactor, with a nuclear steam supply system supplied by Combustion Engineering, Inc. and a turbine generator furnished by General Electric Corporation. The balance of the plant was originally designed and constructed by Northeast Nuclear Energy Company with the assistance of its agent, Bechtel Corporation. Unit 2 was designed to generate 2560 megawatt thermal (MWt), or approximately 865 megawatt electric (MWe), but in 1979, the unit was uprated to a core power output of 2700 MWt with a gross electrical output of approximately 895 MWe. MPS Unit 3 consists of a four-steam-generator, four-coolant-loop, pressurized-light-water-reactor, with a nuclear steam supply system supplied by Westinghouse Electric Corporation and a turbine generator furnished by General Electric Corporation. The balance of the plant was originally designed and constructed by Northeast Nuclear Energy Company with the assistance of its agent, Stone and Webster Corporation. MPS Unit 3 operates at a licensed power output of 3411 MWt, with a gross electrical output of approximately 1195 MWe.

This SER presents the status of the staff's review of information submitted to the NRC through July 22, 2005, the cutoff date for consideration in the SER. The staff identified open items and confirmatory items that had to be resolved before the staff could make a final determination on the application. Sections 1.5 and 1.6 of this report summarize these items and their resolutions. Section 6 provides the staff's final conclusion on the review of the MPS LRAs.

The NRC license renewal project manager is Mr. Johnny H. Eads. Mr. Eads may be reached at (301) 415-1471. Written correspondence should be addressed to the License Renewal and Environmental Impacts Program, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001.