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CCPS Process Safety Glossary

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Engineered mechanisms and administrative policies/

A scaling velocity important during light wind daytime conditions with...

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A relatively slow, self-sustaining, barely luminous gas-phase reaction of...

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A value that has been promoted to an ethical imperative, accompanied with a...

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A self-sustained low energy electrical discharge with non-thermal ionization...

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Maintenance performed to repair a detected fault.

A material that can attack and chemically destroy exposed body tissues, and...

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A complex series of reactions between water and metal surfaces and materials...

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Includes tangible items such as money and equipment as well as the...

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Return (often expressed in monetary terms) resulting from actions that...

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Part of the management decision-making process in which the costs and...

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The quantity of electricity on the positive plate of a capacitor of 1 Farad...

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Force between two charged bodies is proportional to the product of the two...

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An action taken or a physical capability provided whose principal purpose...

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The mechanism by which an interference source produces interference in a...

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A process subject to regulatory requirements established under the OSHA PSM...

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Faults that can be classified as hidden, concealed, unannounced, undetected...

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A flame arrester element that is manufactured of alternate layers of thin...

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Relates to major environment or safety process risks.

An alarm having no automatic safety backup system and requiring immediate...

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See Quenching Diameter

The first adverse effect, or its known precursor, that occurs as the dose...

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Equipment, instrumentation, controls, or systems whose malfunction or...

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A critical event is an event with a specified, high consequence such as an...

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The frequency of occurrence of a critical event.

Final control element associated with an emergency shutdown system.

An estimation of the half thickness of a sample in an unstirred container,...

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Systems and assets, whether physical or virtual, so vital that the loss,...

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A final element whose operation has safety implications.

Minimum mass that is required to enable the occurrence of an explosion.

Process condition (e.g., flow rate, temperature) that can lead to an...

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A sensor whose operation has safety implications.

Any circuit that contains critical protective devices and/or critical...

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Any protection device whose installation and performance is required in...

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Those instruments installed as part of a protection circuit whose...

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Maximum cooling temperature at which all heat is generated by the mass of...

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