Technical Area 55 Entry Control System (ECS). [Plutonium facilities]
A.J. Beaumont, E.L. Brundige, R. DesJardin, Robert Preston Rivera · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 1984
The exchange badge system which was used at the Plutonium Facility located in Technical Area 55 was replaced on a trial basis with an automated Entry Control System. As a result of the success of the trial system, a new system incorporating expanded features and increased reliability is being implemented. The new Entry Control System incorporates several features not previously available in relatively inexpensive entry systems. The reliability of the system is enhanced by redundant microprocessors incorporating bubble memory for nonvolatile storage of the system data base. The badge readers incorporate dual communication lines to two different controllers to further increase the total system reliability.