CCPS Process Safety Glossary

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See "Bulking Brush Discharge".

The maximum concentration in air of a toxic material that the facility and...

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A hypothetical explosion, fire or toxic event that has the potential maximum...

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The maximum gap of the joint between the two parts of the interior chamber...

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The maximum pressure occurring in a closed vessel during the explosion of an...

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The individual risk to the person(s) exposed to the highest risk in an...

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The maximum amount of a chemical that can be released from a process...

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The maximum pressure which is obtained in a closed vessel. This pressure...

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The maximum value of the pressure rise, dp/dtmax, per unit time during...

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The measure of central tendency of a distribution often referred to as its...

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For a stated period in the life of a functional unit, the mean value of the...

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1/?, where ? is the instantaneous failure rate. Dimension (Time).

The statistical average of time taken to identify and repair a fault....

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An management system focused on ensuring that equipment is designed,...

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A program to ensure that process equipment and systems are and remain...

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Turbulence caused by the wind speed variations and the surface roughness...

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Midpoint of the failure data distribution.

Concentration or dose levels, respectively, that kill 50% of exposed...

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A statistically derived single dose of a chemical that is expected to cause...

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As defined by OSHA, treatment (other than first aid) administered by a...

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The temperature at which a solid substance changes to a liquid state. For...

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That portion of the programmable controller used for storage of data and...

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The amount of memory required for a specified part of a program.

An individual's or groupW's simplified representation of a process or system...

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The distance scales ranging from about 1 to 100 km.

Used for estimating transport and dispersion at distances ranging from a few...

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The use of a combination of two or more incident investigation tools to...

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Leading and lagging measures of process safety management efficiency or...

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Isothermal techniques of high sensitivity in which heat fluxes from the...

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The control and processing portion of a computer or microcomputer that can...

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The smallest combination of component and human failures which, if they all...

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A term used in Fault Tree Analysis to describe the smallest combination of...

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The minimum temperature at which a given dust cloud will auto ignite when...

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The lowest concentration of a combustible dust in air, expressed in grams...

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The lowest mass of fuel in the flammable range that will cause a defined...

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The ratio of the minimum current required from an inductive spark discharge...

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