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September 2024

Chemical Process Industry

The phrase is used loosely to include facilities which manufacture, handle and use chemicals.

Chemical Isolation

The stopping of a flame by means of a chemical suppressant.

Chemical Family

A group of single elements or compounds with a common general name. Example: acetone, methyl ethyl ketone, and methyl isobutyl ketone are of the "ketone" family; acrolein, furfural, and acetaldehyde are of the "aldehyde" family. Importance: Elements or compounds within a chemical family generally...

Chemical

Any element, chemical compound or mixture of elements and/or compounds. (OSHA 1994)

Checklist Analysis

A hazard evaluation procedure using one or more pre-prepared lists of process safety considerations to prompt team discussions of whether the existing safeguards are adequate.

Checklist

A list of items requiring verification of completion; typically, a procedure format in which each critical step is marked off (or otherwise acknowledged/verified) as it is performed. Checklists are often appended to procedures that provide a more detailed description of each step, including...

Centerline height

Elevation of plume centerline above ground after plume rise is completed.

Cause-Consequence Analysis [Cause-Consequence Diagrams]

A method for illustrating the possible outcomes arising from the logical combination of selected input events or states. A combination of Fault Tree and Event Tree models.

Cause (Incident)

An event, situation, or condition which results, or could result (Potential Cause), directly or indirectly in an accident or incident.

Cause (in Hazard Evaluation)

In the context of hazard evaluation procedures, an initiating cause.

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