John Urbin 5 April 90 revised by K. Dixon 5 April 91 4/4/91 00 CRya SYSTEM aOH AND CRya ALARM SYSTEM OVERVIEW: The 00 Cryo System is monitored by a computerized process control system and an ODH safety system. During steady state operations the cryo system wi!! be unmanned and system experts will depend on communication systems for notification of system problems. The FIRUS system meets the minimum communication requirement and is supplemented with an autodialer which attempts to contact cryo

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... erators by pager or phone. THE PLAN: The RD/Safety Department requires the ODH monitor system to be connected to the labwide FIRUS system. which enables the Communications Center to receive alarms and notify the proper experts of the condition. The ODH system will have two alarm points. One for an ODH alarm and one for a system trouble alarm. The autodialer system has replaced a former cryo operations summation alarm point in the FI RUS system. This has freed space on the FI RUS system and has allowed the cryo experts more flexibility in setting up their own communication link.