Qualification of Y-12 Legacy Criticality Accident Alarm System Detectors

摘要

The Y-12 National Security Complex has had a criticality accident alarm system (CAAS) capable to detect a criticality accident since 1945. With the exception of Y-12's new High-enriched Uranium Materials Storage facility (HEUMF), the system installed in Y-12's existing facilities dates to 1957. This legacy system has received many upgrades since installation and detector stations have been removed and relocated as enriched uranium operations have evolved, but the basic design and electronic configuration of the system is the same as that in 1957.