September 2024 | AIChE

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September 2024

Emergency Response Planning Guidelines (ERPG)

A system of guidelines for airborne concentrations of toxic materials prepared by the AIHA. For example, ERPG-2 is the maximum airborne concentration below which it is believed nearly all individuals could be exposed for up to one hour without experiencing or developing irreversible or other...

Emergency Response Plan

A written plan which addresses actions to take in case of plant fire, explosion or accidental chemical release.

Emergency Relief Device

A device that is designed to open during emergency or abnormal conditions to prevent rise of internal fluid pressure in excess of a specified value. The device also may be designed to prevent excessive internal vacuum. The device may be a pressure relief valve, a non-reclosing pressure relief...

Emergency Operations

Process changes initiated by the operations staff to place the process into a safe condition (back to normal operations or shutdown) in response to any abnormal situation that could cause a release, explosion, or other significant event.

Emergency Management

A PSM program element involving work activities to plan for and respond to emergencies.

Emergency Management

CCPS RBPS Element 16: This Element includes emergency planning and training, responding safely, performing drills, and communicating with all affected personnel and agencies.

Element Owner

the person charged with overall responsibility for overseeing a particular RBPS element. This role is normally assigned to someone who has management or technical oversight of the bulk of the work activities associated with the element, not necessarily someone who performs the work activities on a...

Element

Basic division in a process safety management system that correlates to the type of work that must be done (e.g., management of change [MOC]).

Effectiveness

The combination of process safety management performance and process safety management efficiency. An effective process safety management program produces the required work products of sufficient quality while consuming the minimum amount of resources.

Effect Zone

For an incident that produces an incident outcome of toxic release, the area over which the airborne concentration equals or exceeds some level of concern. For a flammable release, the area over which a particular incident outcome case produces an effect based on a specified criterion. For a loss...

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