Appendix 2

Upset Conditions Table

This table, and the associated text, was first published in “Process Plant Design and Operation,” Doug Scott & Frank Crawley, pp. 94–105, Copyright Elsevier 1992.

Specific Upset Conditions

In the pages that follow, upset conditions are identified by the guidewords used in hazard and operability studies—this is where upsets are most likely to be identified prior to plant operation. The upset condition can then be analyzed under the four phases of the project: conceptual (Con); detailed design (Det); startup (St), and operation (Op). For ease of presentation and analysis, the conditions are analyzed in block format with possible solutions and individual reference numbers. The time when the upset condition is most ...

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