CCPS Process Safety Glossary

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A collective term that encompasses all activities involved in identifying...

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The frequency with which hazards occur. Dimension (Time -1). The frequency...

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A modified form of fault tree highlighting event mitigating feature pairs....

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For an incident that produces an outcome such as toxic release, the hazard...

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A material that is toxic, reactive, or flammable and is capable of causing a...

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Any chemical reaction with the potential to exhibit rates of increase in...

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Written procedure for affixing appropriate lockout devices or tag out...

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See Loss event.

In a broad sense, any substance or mixture of substances having properties...

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In a broad sense, any particulate solids or mixture of particulate solids...

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Hazardous waste can be classified as follows: Ignitable: Based upon the...

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The extension of a HAZOP Study to include aspects of a LOPA, including...

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A chemical for which there is statistically significant evidence based on at...

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Sufficient energy must be applied to raise the fuel to its ignition...

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The heat of reaction obtained by burning a unit mass of

The net difference in heat of formation of all reactants and of all products...

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

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Pertaining to the numeration system with a radix of sixteen.

An event that, under different circumstances, might easily have resulted in...

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A device to prevent the passage of flame in the reverse direction,...

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A material that is toxic, reactive, or flammable and is capable of causing a...

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Data recorded from actual past experience.

Actions by designers, operators, or managers that may contribute to or...

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Data collected and recorded from past incidents.

a cell whose metabolism is used by a virus for growth and reproduction or...

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The intrinsic factor such as age, race, sex, or behavior that influences a...

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Any operation that uses flames or can produce sparks (e.g., welding).

A rapid, self-sustaining, sometimes audible gas phase reaction of the sample...

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A graphical representation of sequential events in which the tree limbs...

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A single-value measure of societal risk that can be calculated from the data...

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Intended or unintended human action or inaction that produces an...

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The ratio between the number of human errors and the number of opportunities...

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A discipline concerned with designing machines, operations, and work...

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A systematic approach to improving productivity and competence that uses a...

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A method used to evaluate whether system-required human-actions, tasks, or...

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A mixture of a flammable gas with either a combustible dust or combustible...

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