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Alarm Management for Process Control by Douglas H. Rothenberg

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APPENDIX 9

Qualitative Risk Method for Priority Assignment

Never worry about theory as long as the machinery does what it’s supposed to do.

—Robert A. Heinlein

ACKNOWLEDGMENT

This material was provided through the courtesy of H. Porter of Chevron North America Exploration and Production in New Orleans, Louisiana.

A9.1 QUALITATIVE RISK

The qualitative risk method of assigning priority is really just another variation of maximum severity modified by urgency. What it brings to the table, if you will, is another method for assigning urgency. Not only is urgency determined by how fast the problem might go bad, but it also adds a component of whether there might be other forms of protection there to help the operator when intervention does not occur ...

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