by Walter Brasch
Nov. 11, 2011
For a few hours on the afternoon of Nov. 1, the people of southern California were scared by initial reports of an alert at the San Onofre Nuclear Generating Station. An “alert” is the second of four warning levels.
Workers first detected an ammonia leak in a water purification system about 3 p.m. Ammonia, when mixed into air, is toxic. The 30 gallons of ammonia were caught in a holding tank and posed no health risk, according to the Nuclear Regulatory Agency (NRC).