Palisades Removed from Service to Conduct Tank Repairs

June 12, 2012

Covert, Mich. - Control room operators at Entergy's Palisades nuclear plant removed the plant from service at 6:49 p.m. EDT on Tuesday, June 12 to conduct repairs to the plant's Safety Injection / Refueling Water tank. The aluminum SIRW tank is 50 feet in diameter and 35 feet tall. It holds up to 300,000 gallons of borated water that is used to fill the reactor cavity during refueling outages and to act as a source for the plant's safety injection system in the event of a loss of coolant accident.

Operations department personnel have been monitoring, collecting and analyzing tank leakage twice every 24 hours. At 1:41 p.m. this afternoon, the tank was declared inoperable because the leakage had surpassed the Operational Decision Making Initiative (ODMI) limits set earlier in the month. Initial plant activities call for draining the tank, conducting an examination to located the source of the leakage, make repairs to the tank, refill the tank, and return the plant to service.

Entergy Corporation is an integrated energy company engaged primarily in electric power production and retail distribution operations. Entergy owns and operates power plants with approximately 30,000 megawatts of electric generating capacity, including more than 10,000 megawatts of nuclear power, making it one of the nation's leading nuclear generators. Entergy delivers electricity to 2.8 million utility customers in Arkansas, Louisiana, Mississippi and Texas. Entergy has annual revenues of more than $11 billion and approximately 15,000 employees.