The NMT-5 Criticality Database maintains criticality-related data and documentation to ensure the safety of workers handling special nuclear materials at the Plutonium Faciiity (TA-55) at Los Alamos National Laboratory. The database contains pertinent criticality safety limit information for more than 150 separate locations at which special nuclear materials are handled. Written in 4th Dimension for the Macintosh, it facilitates the production of signs for posting at these areas, tracks the history of postings and related authorizing documentation, and generates in Microsoft Word a current, comprehensive representation of all signs and supporting documentation, such as standard operating procedures and signature approvals. It facilitates the auditing process and is crucial to full and effective compliance with Department of Energy regulations. It has been recommended for installation throughout the Nuclear Materials Technology Division a t Los Alamos.

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