EDAC 21 Criticality Accident Alarm System (CAAS)

Criticality Accident Alarm Systems (CAAS) are required in nuclear facilities where an accidental criticality excursion could result from operational processes. In general, most production-oriented nuclear fuel cycle facilities require a CAAS system because the fissile material is managed in quantities that exceed critically-safe mass limits.

The EDAC-21 is a 3rd generation system, continually building upon the 1970’s design that was introduced and co-developed by the CEA (the French Atomic Energy Commission).