The Functional Safety approach emerged in the 1990s. It introduced the concept that a process, already managed by a ‘basic process control system’ might need a ‘protection system’, sometimes known as a ‘safety instrumented system’ as well.
“Functional safety is the part of the overall safety of a system or piece of equipment that depends on automatic protection operating correctly in response to its inputs or failure in a predictable manner (fail-safe). The automatic protection system should be designed to properly handle likely human errors, hardware failures and operational/environmental stress.”Wikipedia
Functional Safety is Also:
“Functional safety is the part of the overall safety that depends on a system or equipment operating correctly in response to its inputs. Functional safety is the detection of a potentially dangerous condition resulting in the activation of a protective or corrective device or mechanism to prevent hazardous events arising or providing mitigation to reduce the consequence of the hazardous event.”The International Electrotechnical Commission (IEC)
I will be posting more about this soon…
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