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Validation of the Computerized Annunciation Message List System (CAMLS).
Abstract:
The Computerized Annunciation Message List System (CAMLS) is an annunciation system for use in the control rooms of nuclear generating stations. CAMLS will alert operators to changes in plant conditions that may impact on safety and production and help staff to effectively respond. CAMLS is designed to:
• provide a clear and concise overview of the current problems or faults in the plant,
• provide an overview of the current state of the plant in terms of automatic process and equipment actions,
• provide support for specific operational tasks, through either pre-configured or operator-configured annunciation displays, including:
- rapid and efficient upset response,
- plant stabilization,
- problem diagnosis,
- recovery action planning and implementation, and
- rapid recovery from trip and return to power operation.
This paper summarizes the formal evaluation of the CAMLS in full-scope simulators at two different CANDU stations. The evaluation clearly establishes that CAMLS improves operator performance for most operationally significant tasks involving annunciation compared to existing CANDU annunciation systems. The implications of these improvements on safety margins, production costs, and human performance are significant.
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