Columbia's First Scram in Six years?

It sure sounds like Columbia was putting production over safety. 

Cooling problem shuts down nuclear plant near Richland

RICHLAND, Wash. — A power company shut down a nuclear plant in south-central Washington state after operators received an indication that a system used to cool equipment wasn't working.

Energy Northwest spokesman John Dobken said early Tuesday that no radiation was released from Columbia Generating Station near Richland, and no danger to the public was created.

He told The Associated Press that officials hope to restart the plant sometime this week.

The Tri-City Herald reported that the plant was shut down Monday after operators were alerted to problems with the system that uses water to provide cooling to heat exchangers and pumps, including those that control the power level of the reactor.

Energy Northwest said it appeared a water system valve may

This doesn't make since with the valve being out of position. Why didn't the valve being out of position scram the plant last week? Is it employee sabotage? Is it management trying to put a shadow over the whistleblowers by tripping the plant?  

not have been in the right position. An investigation has begun.

The last time the plant had an unplanned shutdown was in November 2009, when hydraulic fluid leaked.