CCPS Process Safety Glossary

See Pre-Trip Alarm.

A screening tool to collect information that potential clients need to begin...

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See Pre-Trip Alarm.

Constant k* in the Arrhenius equation (also called frequency factor). The...

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A device that looks and operates like the final commercial unit. This...

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A system to confirm, before the introduction of hazardous chemicals, that...

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An alarm which allows an operator to take corrective action before an...

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A process vessel or piping system (length to diameter ratio of less than 5)...

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Data generated by using correlations, factored estimation procedures, and...

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The compass direction from which the wind blows the majority of the time...

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In a compartmented system in which there are separate but interconnected...

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A relief valve is a spring-loaded valve actuated by static pressure upstream...

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The act of causing an event not to happen.

Inspection or testing conducted on equipment to detect impending or minor...

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Measures taken at the initial stages of a runaway to avoid further...

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A basic independent event for which frequency can be obtained from...

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A commonly used term in the nuclear industry to describe the quantitative...

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The expression for the likelihood of occurrence of an event or an event...

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The expression for the likelihood of occurrence of an event or an event...

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A random variable with a mean of 5 and a variance of 1, which is used in...

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The ratio of the specification range to six standard deviations of the...

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A diagram that shows the material flow from one piece of equipment to the...

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The identification of undesired events that lead to hazardous events, the...

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An organized effort to identify and evaluate hazards associated with...

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The material (i.e., chemical substances) processed by the equipment.

The material processed by the equipment.

A discipline that focuses on the prevention of fires, explosions, and...

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A discipline that focuses on the prevention and mitigation of fires,...

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Physical, chemical, and toxicological information related to the chemicals,...

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A program or activity involving the application of management principles and...

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A program or activity involving the application of management principles and...

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A process safety system comprises the design, procedures, and hardware...

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The indication of the degree of aggressiveness of the process medium on the...

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The management practice supporting a philosophy of service to customers and...

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Chemicals produced during a reaction process

A series of actions proposed in order to achieve a certain result.

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