UPDATE 2-Dominion Conn. Millstone 2 reactor shut - NRC

(Updates with NRC comment)

NEW YORK, May 22 (Reuters) - The 882-megawatt Unit 2 at Dominion Resources Inc's (D.N: Quote, Profile, Research) Millstone nuclear power station in Connecticut shut Thursday afternoon, a spokeswoman for the U.S. Nuclear Regulatory Commission said.

She said the unit was stable and operators were reviewing data to determine the cause.

Officials at Dominion were not available to comment on the plant status.

The 2,037 MW Millstone station is located in Waterford, in New London County, about 50 miles southeast of Hartford. There are two reactors at the station, Unit 2 and the 1,155 MW Unit 3, which entered service in 1975 and 1986, respectively.

Both units were operating at full power Thursday morning.

One MW powers about 1,000 homes in Connecticut.

Dominion, which wholly owns Unit 2, operates the Millstone station for its owners.

Dominion (93.47 percent), Massachusetts Municipal Wholesale Electric (4.8 percent) and Central Vermont Public Service Corp (CV.N: Quote, Profile, Research) (1.73 percent) own Unit 3.

Dominion, of Richmond, Virginia, owns and operates about 28,000 MW of generating capacity, markets energy commodities and transmits and distributes electricity and natural gas to customers in 11 states. (Reporting by Scott DiSavino; Editing by Walter Bagley)