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Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)

Editor
Michael G. Stamatelatos
Michael G. Stamatelatos
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Harold S. Blackman
Harold S. Blackman
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ISBN-10:
0791802442
No. of Pages:
2576
Publisher:
ASME Press
Publication date:
2006

The IDAC (Information, Decision, and Action in Crew context) model is developed to probabilistically predict the responses of the nuclear power plant control room operating crew in accident conditions for human reliability analysis in the context of probabilistic risk assessment. The response spectrum includes cognitive, emotional, and physical activities during the course of an accident. This paper discusses the IDAC modeling components and rules of behavior. Three generic types of operator are modeled: Decision Maker (e.g., Shift Supervisor), Action Taker (e.g., Reactor Operator), and Consultant (e.g., Technical Advisor). Operator's problem-solving process is divided into three types: information pre-processing (I), problem-solving and decision making (D), and action execution (A). Explicit and context-dependent behavior rules for each type of operator are developed in the form of tables and logical or mathematical relations. These rules govern the process and activities of each of the three types of response (I,D, A) of each operator.

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