ArrowPoint Nuclear Power Plant, which serves as the basis of this dramatization, seems to be modeled on the Indian Point Power Plant, which is 36 miles North of New York City. The plant is in the process of winding down due : Pressure from Environmentalists Loss of an operating license Cost Containment Issues Proximity to an Earthquake fault zone.
LUD is short for Local Usage Detail, or otherwise known as Phone Records.
The training drill seemed to have been filmed inside City of Yonkers Water Treatment Plant. Outside shots were filmed elsewhere!