NRC Event Report says that main condenser tube leak forced operators at Comanche Peak to manually shut down the reactor yesterday afternoon. Luminant Energy did not include an estimate of how long repairs would take.
Comanche Peak has two Westinghouse boiling water reactors. Construction on the site began in 1974, and the reactors went online in 1990 and 1993. Luminant has applied for a twenty-year license extension for the existing units, and has submitted an application to the NRC to build two new reactors at the site. They have applied for a federal loan guarantee for the new units.
You can read Event Reports at the NRC’s website at www.nrc.gov. Click on Event Reports at the bottom of the page.