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The APT/LEDA personnel radiation protection system
installation was accomplished using a flexible, modular
proven system which satisfied regulatory orders, project
design criteria, operational modes, and facility
requirements. The goal of providing exclusion and safe
access of personnel to areas where prompt radiation in the
LEDA facility is produced was achieved with the
installation of a DOE-approved Personnel Access Control
System (PACS). To satisfy the facility configuration
design, the PACS, a major component of the overall
radiation safety system, conveniently provided five
independent areas of personnel access control. Because of
its flexibility and adaptability the Los-Alamos Neutron-
Science-Center-(LANSCE)-designed Radiation Security
System (RSS) was efficiently configured to provide the
desired operational modes and satisfy the APT/LEDA
project design criteria. The Backbone Beam Enable
(BBE) system based on the LANSCE RSS provided the
accelerator beam control functions with redundant,
hardwired, tamper-resistant hardware. The installation
was accomplished using modular components.
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