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SCE

SCE — Safety-Critical Element

An asset, system or barrier whose failure could directly contribute to a major accident or whose purpose is to prevent or mitigate such an event.

Definition

A Safety-Critical Element (SCE) is any asset, system, structure, component or barrier whose failure could cause or significantly contribute to a major accident, or whose purpose is to prevent, detect, control or mitigate the consequences of such an event. Safety-Critical Elements are identified through risk assessments and managed throughout their operational lifecycle to ensure continued integrity and performance.

Why It Matters

Safety-Critical Elements provide essential protection against major accident hazards by preventing, detecting or mitigating hazardous events.

In Practice

The concept of Safety-Critical Elements is widely applied within offshore and major hazard industries to support integrity management, performance standards and regulatory compliance for major accident hazard barriers.

Common Misuse

A Safety-Critical Element is the broader asset integrity concept encompassing equipment, systems and barriers, whereas Safety-Critical Equipment refers specifically to the physical equipment designated as safety-critical.

Term Details
Synonyms:
SCE; Safety-Critical Element; Safety Critical Element; Major Accident Hazard Barrier
Classification:
Process Safety
Concept
Advanced
Applications

Process Safety; Asset Integrity; Risk Management.

Where It's Used

Offshore.; Oil and gas.; Petrochemical.; Power generation.; Infrastructure.

References

UK HSE Offshore Safety Case Regulations; ISO 17776

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