September 2024 | AIChE

Other Sites & Tools

Technical Groups

You are here

September 2024

Semi-Quantitative Risk Analysis

Risk analysis methodology that includes some degree of quantification of consequence, likelihood, and/or risk level.

Semi-Quantitative

Risk analysis methodology that includes some degree of quantification of consequence, likelihood, and/or risk level.

Semi-Batch Reactor

In a semi-batch reactor, some reactants are added to the reactor at the start of the batch, while others are fed continuously during the course of the reaction.

Semi-Batch Reactor

A reactor in which some reactants are added to the reactor at the start of the batch, while others are fed intermittently or continuously during the course of the reaction.

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,...

Self-Heating of Powders

See Spontaneous Combustion (Heating) of Powders.

Security Vulnerability Analysis (SVA)

The process of determining the likelihood of an adversary successfully exploiting a weakness and the resulting degree of damage or impact. A SVA is not a quantitative risk analysis, but is performed qualitatively using a structured and repeatable method and the best judgment of safety, security,...

Security Risk

The potential for damage to, or loss of, an asset. Risk, in the context of chemical process security, is the potential for the intentional event outcome to be realized. Typical examples include an intentional release of hazardous materials from containment, the theft of chemicals that could later...

Security Plan

A document that describes a plan to address security issues and related events including security assessment and mitigation options. This includes security alert levels and response measures to security threats.

Pages