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Quantitative effect indication of a counter action in an abnormal plant situation GOFUKU Akio1, and KONDO Yuta2 1. Graduate School of Natural Science and Technology, Okayama University,
3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530 Japan (fukuchan@sys.okayama-u.ac.jp) 2. Department of Systems Engineering, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530 Japan
Abstract:In an automated plant, the expected roles of operators are conducting smooth non-stationary operations and taking suitable counter actions in an abnormal situation. In order to generate operator support information for undertaking an appropriate counter action, the authors proposed a technique to generate explanation sentences for the causal relations of influences of an abnormal cause and the effects of an operation by operators based on a model by the Multi-level Flow Modeling (MFM). However, the technique only generates qualitative information pertaining to the effect propagation of a counter action.This study improves the technique in the quest to quantitatively explain the effects of a counter action by introducing the information generated by a numerical simulation. The applicability of the technique is examined by applying it to an oil refinery plant. Considering the results obtained, it is confirmed that this technique can generate explanation sentences including quantitative information of cause-effect correlations of a counter action.
Keyword: operator support information; quantitative effect explanation; multi-level flow modeling; numerical simulation
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