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IMPACT OF CONTROL ROOM CONSOLIDATION ON OPERATOR WORKLOAD

NEWSLETTER ARTICLE

One of the analytic techniques utilized by Beville Engineering is the Subjective Workload Assessment Technique, or SWAT. With this technique the amount of mental workload imposed on an operator by various unit upsets can be measured. In the course of Beville's control room analyses it was discovered that there was a difference in the amount of mental workload imposed upon operators in consolidated versus non-consolidated control rooms.

Ten off-normal situations were evaluated at two hydrocrackers of similar size, with the major difference being that one was part of a consolidated control center. Those events that were specific to a hydrocracker (e.g., compressor trip) had equivalent workload levels at both refineries. Those events that required inter-unit coordination (e.g., low fuel gas, low hydrogen) imposed significantly less mental workload on those operators in the consolidated control center. The conclusion - appropriate control room consolidation should lower operator mental workload requirements for multiple unit upset situations.

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For further information, visit the links below.

| Alarm & Display System Analysis Overview | Alarm Management | Display Design | Alarm & Display Design Seminar | Beville Shape Calculator -Excel download | Alarm Distribution Estimator -Excel download |


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BEVILLE NEWS

UPCOMING

The dates for this year's Fall meeting for the Center for Operator Performance will be announced soon. For more information, please contact Lisa Via. Guests are always welcome!

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