One month after America woke up to Fukushima, the US decides to update their understanding of plume modeling?
SECTION 1. EXERCISE OVERVIEW
The exercise begins with SONGS Unit 2 Train B Diesel Generator suffering a catastrophic failure. Within fifteen minutes of this event, SONGS declares an Alert and notifies the jurisdictions within the EPZ. In an unrelated event, the Control Room receives a Unit 2 vibration and loose parts alarm. Subsequently, Unit 2 Reactor Coolant Pump #2 suffers a sheared shaft, resulting in a 380 gallon per minute release of reactor coolant into containment. A chemistry sample taken approximately thirty minutes later indicates the loose parts damage more than one percent to the fuel in the reactor vessel. As a result of the damage to the reactor fuel, SONGS declares a Site Area Emergency. With the reactor coolant leak increasing significantly, and containment pressure levels rising, SONGS declares a General Emergency. A containment purge valve is moved off its seat as a result of increased pressure in the containment, releasing radioactive material to the environment.