Use of a computer-assisted administrative control to enhance criticality safety in LLNL for fissile material disposition operations

This paper deals primarily with the use of a two-person rule on the mass limit control. Main emphasis is placed on the appropriate use of a computer program to assist operators in carrying out mass control. An attempt will be exercised to compare the use of a mass control card system under a two-person rule with a computer-assist two-person system. The interface points relevant to criticality safety between computer and human operators will be identified. Features that will make a computer program useful in a multiple workstation application environment will be discussed along with the merits of the using the computer program. How such a computer-assist administrative control may be incorporated in the overall infrastructure for criticality safety will be analyzed. Suggestion of future development of using a computer program to enhance safety margin will also be made to stimulate further discussion on the application of computer technology for real-time criticality safety control.