TY - JOUR
T1 - An automaton-based approach to evaluate and improve online diagnosis schemes for multi-failure scenarios in batch chemical processes
AU - Yeh, Ming Li
AU - Chang, Chuei Tin
PY - 2011/12/1
Y1 - 2011/12/1
N2 - Online diagnosis has been considered as an important measure for improving operational safety in many batch chemical plants. Specifically, the state transition behaviors of all hardware items (components) in the given batch process and their failure mechanisms are modeled systematically with automata. The system model is then assembled by connecting the component models on the basis of a generic hierarchical structure. A "diagnoser" can be constructed accordingly for the purpose of determining various qualitative and quantitative performance indices. Guided by these indices, two performance enhancement approaches can be effectively applied: (1) installing additional sensors which are not included in the piping and instrumentation diagram (P&ID) and (2) executing extra operation steps which are not specified in the sequential function chart (SFC). Three examples are presented in this paper to demonstrate the feasibility of the proposed approach.
AB - Online diagnosis has been considered as an important measure for improving operational safety in many batch chemical plants. Specifically, the state transition behaviors of all hardware items (components) in the given batch process and their failure mechanisms are modeled systematically with automata. The system model is then assembled by connecting the component models on the basis of a generic hierarchical structure. A "diagnoser" can be constructed accordingly for the purpose of determining various qualitative and quantitative performance indices. Guided by these indices, two performance enhancement approaches can be effectively applied: (1) installing additional sensors which are not included in the piping and instrumentation diagram (P&ID) and (2) executing extra operation steps which are not specified in the sequential function chart (SFC). Three examples are presented in this paper to demonstrate the feasibility of the proposed approach.
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U2 - 10.1016/j.cherd.2011.05.007
DO - 10.1016/j.cherd.2011.05.007
M3 - Article
AN - SCOPUS:82855178830
VL - 89
SP - 2652
EP - 2666
JO - Chemical Engineering Research and Design
JF - Chemical Engineering Research and Design
SN - 0263-8762
IS - 12
ER -