Statistical quality control of alarm occurrences

Details Statistical quality control of alarm occurrences Statistical quality control of alarm occurrences

2007-10-30

2007-10-30

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Time duration or rate

C340S506000, C702S179000, C702S181000

Reexamination Certificate

active

11497441

ABSTRACT:
A method for evaluating an alarm system for continuous or semi-continuous processes that gives an indication of the actual loading on the operator. A transformations is applied to a data set consisting of alarms and associated times, resulting in the data being much more amenable to common techniques of statistical quality control. The technique requires only a history of alarm events, and the transformation has a strong intuitive appeal.

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Levinson, W., 1990, Understand the Basics of Statistical Process Control.
Jacobs, D.C., 1990, Watch out for Nonnormal Distributions.
EEMUA, 1999, Alarm Systems, A Guide to Design, Management & Procurement.

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