AUMA, a manufacturer of actuators for nuclear power plants (NPPs), with numerous locations throughout the US, has received approval for its actuators to be used for nuclear service. The new generation of AUMA SAI 07.2 – 16.2 and SAI 25.1 – 35.1 actuators are now approved to IEEE 382:2006 for use within the reactor building. The SAN 07.2 – 16.2 and SAN 25.1 – 35.1 series are qualified for slightly less demanding service in secondary water, steam and ventilation systems.
The qualification process for NPP actuators is stringent, whether they are designed to operate inside or outside the containment vessel. NPPs are required to withstand severe incidents such as steam and coolant leaks, floods and earthquakes. Following such incidents, key valves must remain operable to prevent further damage to the plant.