CCPS Process Safety Glossary

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Measures directed to reduce the consequences of a runaway to an acceptable...

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A combustion that propagates by heat and mass transfer through the un-...

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A flame arrester used to prevent the transmission of a deflagration.

The measure of the explosibility of a dust cloud, in units of bar-m/s. 

A method employing equipment and procedures that interrupts the propagation...

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The technique of specifying the design pressure of a vessel and its...

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The technique of detecting and arresting combustion in a confined space...

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The transition phenomenon resulting from the acceleration of a deflagration...

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The reduction of pressure generated in a vessel by a deflagration by...

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A failure which is gradual or partial; it does not cease all function but...

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A countermeasure strategy that is intended to provide various barriers to...

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A specialized logic form of an "AND" gate where all inputs to the gate must...

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A polling of experts utilizing the following procedure: Select a group of...

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A polling of experts. The Classical Delphi is a single estimate (for each...

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A plant condition or event which requires a protective system or device to...

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The number of demands divided by the total elapsed operating time during...

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The total number of demands for the data window experienced by the component...

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A failure that is primarily related to the number of times that a device or...

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The description of the population along the transportation route, which can...

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Fiber weight per unit length (gram/9000-m length)

Cloud density is greater than ambient air density, due to the high molecular...

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A gas with density exceeding that of air at ambient temperature. Sometimes...

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Failure whose probability cannot be expressed as the simple product of the...

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The rate at which material accumulates on a surface

A measure of level of review, degree of complexity, and extent of detail...

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Used on or applied to the skin. Importance: Dermal exposure, as well as...

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Adverse effects resulting from skin exposure to a substance. Also referred...

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A serious incident that has some small likelihood of occurring during the...

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Conditions to be used for the design of a vent system to ensure it will meet...

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Institute under the auspices of the American Institute of Chemical Engineers...

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A countermeasure strategy intended to identify an adversary attempting to...

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A mechanical, electrical, or chemical device that automatically identifies...

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To conclude; to reach an opinion consequent to the observation of the fit of...

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A countermeasure strategy intended to prevent or discourage the occurrence...

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The minimum and maximum concentrations of a combustible material, in a...

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A release of energy caused by the propagation of a chemical reaction in...

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