CCPS Process Safety Glossary

A gas that does not meet the definition of a flammable gas.

The phase of process operation between the startup phase and shutdown phase...

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Any process operations intended to be performed between startup and shutdown...

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A gradual erosion of standards of performance as a result of increased...

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The front surface of vapor cloud, that is, the surface farthest along in the...

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NOx

Oxides of Nitrogen; undesirable air pollutants. Importance: Often listed on...

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Extracts of foods claimed to have a medicinal effect on human health.

Freedom from bias.

The noting and recording of information to support findings. Also field...

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Refers to PES equipment status. A PES becomes obsolete if the plant...

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Proportion of building occupants that could potentially suffer an injury or...

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An incident involving injury to workers.

People, property, or the environment located outside of the site property...

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Persons located outside of the site property line that may be impacted by an...

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See Resistance.

The Current Density (Amperes per square meter) divided by Electric Field...

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Relating to the sense of smell. Importance: The olfactory organ in the...

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A PES is said to be On-Line when it is in active control of a machine or...

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Employees, contractors, visitors, service providers, and others present at...

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The fraction of the time that a process unit is operating

an oncogene is a gene that, when mutated or expressed at high levels, helps...

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Defined to be the temperature at which the heat that is released by a...

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A method of control by which signals are transmitted by one or more forward...

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A series of sequential written details describing how to operate equipment...

The values or ranges of values within which the process parameters normally...

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A phase of operation during the operation and maintenance stages of the life...

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The maximum pressure at which a flame arrester can be used according to its...

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Written, step by step instructions and information necessary to operate...

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Manufacturer's provided functions intended to management of Internal PES...

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The amount of time an equipment is in its operating mode.

The parameters (i.e., safe upper and lower limits, run time) under which...

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A defined action, namely the act of obtaining a result from one or more...

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The performance of all tasks correctly every time; Good OD results in...

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An event in which production rates or product quality is seriously impacted...

A PSM program element associated with efforts to ensure that a process is...

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Also known as equipment reliability. The probability that, when operating...

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