CCPS Process Safety Glossary

A plot of specific locations (in the three spatial coordinates: x, y, z)...

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A system condition in which the temperature remains constant. This implies...

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A chemical name derived from a formal system of nomenclature employing a...

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A release of vapor or aerosol at sufficient pressure that the momentum of...

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A fire type resulting from the discharge of liquid, vapor, or gas into free...

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Fire type resulting from fires from pressurized release of gas and/or liquid...

A procedure that systematically identifies: (1) job steps, (2) specific...

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Equipment failure rate data derived from expert opinion or judgement.

A jump that takes place only when the instruction that specifies it is...

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In the execution of a computer program, a departure from the implied or...

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A quality system using lessons learned.

Kilogram, a metric unit of weight, about 2.2 U.S. pounds. See also, "g/kg...

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An approximation method that allows the analyst to estimate fault tree Top...

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Data associated with the conversion rate of a reaction such as the...

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Field experiments at the Nevada Test Site involved groundlevel area source...

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A vessel used to separate liquids from vapors.

Where the demand is equally likely to occur at any time, the main concern is...

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Liter, a metric unit of capacity. A U.S. quart is about 9/10 of a liter....

A flood resulting from an overflow of a lake or pond.

One or more Networks of contacts, coils, graphically represented functions,...

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See Burning Velocity

A programming language using function block diagrams for representing the...

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A programming language based upon graphical representation.

A Textual programming language using Instructions for representing the...

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A programming language using Ladder Diagrams for representing the...

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A Textual programming language using assignment, sub-program control,...

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A system consisting of a well-defined, usually finite, set of characters;...

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See “Slip Flange.”

Partial differential equation applying to potential distribution for any...

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Failure in a component as a result of a hidden flaw.

Second law of thermodynamics that states that energy can only change in form...

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Formula describing the profile of mean velocity close to the surface, given...

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A process (method, system) of evaluating the effectiveness of independent...

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See "Safety Layer".

The relative location of equipment or buildings within a given site. (CCPS,...

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Lethal Concentration: A concentration of a substance being tested which will...

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