CCPS Process Safety Glossary
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Loose “ring” flange for connecting flared or stub end pipe. Continuity may... Read More... |
A measure of risk to a group of people. It is most often expressed in terms... Read More... |
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Programs, procedures, rules, and associated documentation required for the... Read More... |
An interlock accomplished through an application program within a PES (see... Read More... |
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See Software Interlock. |
Measure of lack of porosity of an object. For example, a solid building has... Read More... |
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A term expressing the percentage of a material (by weight) that will... Read More... |
A mode of operation of solid state output devices in which the device... Read More... |
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The estimation, based on the release specification, of the actual cloud... Read More... |
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Transient discrete electric discharge which takes place between two... Read More... |
Instructions that describe proper handling and storage procedures specific... Read More... |
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A description of engineering precautions and personal protection that should... Read More... |
A dimensionless, temperature dependent ratio of the density of one substance... Read More... |
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The area under the overpressure versus time curve. |
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The document prepared in compliance with U.S. regulation “Guidelines For The... Read More... |
Capable of igniting and burning in air without the presence of an ignition... Read More... |
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Refers to the ratio of the suppression of turbulence by thermal effects to... Read More... |
The Pasquill stability class scheme is based on time of day, wind speed,... Read More... |
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Steady burning of a flame, stabilized at, or close to the flame arrester... Read More... |
A detonation that progresses through a confined system without significant... Read More... |
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Those materials that normally have the capacity to resist changes in their... Read More... |
Assembling, testing, and operating a process control system in a controlled... Read More... |
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Distance from the center of an explosion |
The square root of the sum of squared values of concentration minus... Read More... |
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Hardware operation that is normally not running but must be ready run, e.g... Read More... |
A programming language construct that represents a set of declarations or a... Read More... |
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The class of phenomena recognized by the presence of electrical charges,... Read More... |
A flame arrester designed to prevent flame transmission by quenching gaps (... Read More... |
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Conditions that are characterized by constant concentrations and... Read More... |
Two events (A and B) are statistically dependent if the probability that A... Read More... |
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Two events (A and B) are statistically independent if the probability that... Read More... |
The use of statistical techniques (such as control charts) to analyze a... Read More... |
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Short Term Exposure Limit; ACGIH terminology. See also, "TLV-STEL." |
A term used to describe a balanced ratio of chemical reactants that would... Read More... |