September 2024 | AIChE

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Technical Groups

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September 2024

Self-reactive

Capable of polymerization, decomposition or rearrangement. Initiation of the reaction can be spontaneous, by energy input such as thermal or mechanical energy, or by catalytic action increasing the reaction rate.

Self-Igniting

The ignition and sustained combustion of a substance without introduction of any ignition source besides thermal energy or heat of reaction resulting when combined with other substances in the surrounding environment. Self-igniting materials include materials above their autoignition temperature,...

Sheltering

Physical protection (such as an enclosed building) against the outcome of an incident.

Repeat-back

A method of communication that requires the receiver to repeat the message back to the sender to validate that the appropriate message was received.

Replacement-in-kind (RIK)

An item (equipment, chemical, procedure, etc.) that meets the design specification of the item it is replacing. This can be an identical replacement or any other alternative specifically provided for in the design specification, as long as the alternative does not in any way adversely affect the...

Representative Set (of incidents)

A selection of incidents designed so as to contain one or more incidents from each of the three incident classes (localized, major, and catastrophic).

Representative Unit

A unit part of a unit that is covered by the PSM program that is being audited. When the potential scope of the audit would include a large number of units or equipment, focus units are sometimes used to help the auditors select records and documents for review, and people to interview, so that...

Resolution

Management's determination of what needs to be done in response to an audit finding (and/or associated recommendation), incident investigation team recommendation, risk analysis team recommendation, and so forth. During the resolution step, management accepts, rejects for cause, or modifies each...

Resources

The labor effort, capital and operating costs, and other inputs that must be provided to execute work activities and produce work products.

Retrofit, Update, and Revalidate

To correct substantive deficiencies in the prior PHA, and then update and revalidate it (See Update and Revalidate).

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