During a walkdown inspection yesterday evening, technicians at the Davis-Besse nuclear power plant in Ohio discovered what they said was a pinhole leak in a weld in the Reactor Coolant System. The plant’s sole reactor is currently shut down for refueling. As a result of the leak, the plant entered a Technical Specification Limiting Condition for Operation.
An article in the Cleveland Plain Dealer reported:
Davis-Besse was preparing to resume operations after more than a month-long reactor shutdown for refueling and plant maintenance.
In a report early Thursday to the Nuclear Regulatory Commission, plant owner FirstEnergy Corp. estimated the leak of radioactive coolant inside the reactor containment building at about one-tenth gallon per minute.
Spokeswoman Jennifer Young said the leaked coolant flowed into a nearby floor drain and was captured for later processing.
Here’s a link to the article: http://www.cleveland.com/business/index.ssf/2012/06/davis-besse_1.html