CCPS Process Safety Glossary

Milligram; a metric unit of weight. There are 1,000 milligrams in 1 gram (...

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Milligrams per kilogram; an expression of toxicological dose. See also, "g/...

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Milligrams per cubic meter; a unit of measuring concentrations of dusts,...

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Isothermal techniques of high sensitivity in which heat fluxes from the...

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The control and processing portion of a computer or microcomputer, that can...

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Mil

One thousandth part of one inch, equal to 25.4 mm.

The smallest combination of component and human failures which, if they all...

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A term used in Fault Tree Analysis to describe the smallest combination of...

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The lowest concentration of a combustible dust in air, expressed in grams...

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The lowest concentration of combustible dust necessary to produce an...

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The lowest mass of fuel in the flammable range that will cause a defined...

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The ratio of the minimum current required from an inductive spark discharge...

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The lowest energy of an electrical spark discharge that will ignite a...

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The minimum amount of energy released at a point in a combustible mixture...

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Electrical energy discharged from a capacitor, which is just sufficient to...

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Initiation of flame propagation in a combustible mixture requires an...

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Voltage across capacitor of specified capacitance which upon discharge is...

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Infrequent occurrence of these accidents or near misses have acceptable...

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A dispersion of fine liquid droplets in a gaseous medium.

Lessening the risk of an accident event sequence by acting on the source in...

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An act that causes a consequence to be less hazardous (CCPS, 2001)

Reducing the risk of an accident event sequence by taking protective...

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The act of causing a consequence to be less severe.

Equipment and/or procedures designed to respond to an accident event...

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Systems or procedures, such as water sprays, foam systems, and sheltering...

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Equipment and/or procedures designed to respond to an accident event...

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Maximum elevation of mixing in a typical daytime boundary layer.

Milliliter; a metric unit of capacity, equal in volume to 1 cubic centimeter...

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Millimeters (mm) of Mercury (Hg); a unit of measurement for low pressures or...

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The means by which human interaction with the control system is accomplished...

Mathematically, ru2 (in Newtons/m2), the product of the cloud density and...

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Mathematically, ru2A (in Newtons), the product of the cloud density, speed...

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Accounts for the effects of stability and is proportional to u*3 divided by...

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Used in many boundary layer and transport and dispersion models to estimate...

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A simple molecule that is capable of combining with a number of other...

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A structured analysis of an incident directed by insights from historic case...

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