What is a safety case, and in which industries is it commonly used?

• A. A structured argument and evidence that a facility's major hazards have been reduced to tolerable levels; commonly used in oil, gas, chemical, and offshore industries.
• B. A training manual for operators.
• C. A financial risk assessment.
• D. A housekeeping checklist.

Answer: (A)

A safety case is a structured argument supported by evidence that the major hazards at a facility have been identified and reduced to a tolerable risk level. It blends a logical reasoning that safety controls are properly designed, implemented, and maintained with concrete evidence such as hazard analyses, design data, operating procedures, training records, inspection and maintenance results, and performance monitoring. This approach is used where the consequences of failures are severe, and regulators require demonstrable safety assurances, so it’s commonly applied in oil and gas, chemical, and offshore industries.

Other documents like a training manual, a financial risk assessment, or a housekeeping checklist serve different purposes—instruction for operators, evaluation of financial risk, or day-to-day organizational tasks—whereas a safety case specifically presents the safety argument backed by evidence to show risks are under control.