Safety-Critical Maintenance
Safety-critical maintenance is work required to preserve the performance of equipment or functions that prevent or control major safety consequences.
What this term means in maintenance
Safety-critical maintenance is work required to preserve the performance of equipment or functions that prevent or control major safety consequences.
Examples of safety-critical work
Examples include:
- Proof testing
- Relief-device service
- Fire-pump testing
- Gas-detector calibration
- Emergency-generator testing
- Interlock verification
- Shutdown-valve maintenance
Practical example
A gas detector is calibrated and function-tested according to its approved performance standard.
Stronger controls
Safety-critical work may require:
- Approved procedure
- Competent personnel
- Defined interval
- Independent verification
- Controlled deferral
- Completion evidence
- Management review
Overdue work
Overdue or failed safety-critical maintenance should be clearly escalated.
Common mistake
Treating safety-critical work like ordinary routine PM can allow weak evidence, uncontrolled delay, or incomplete testing.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Safety-Critical Equipment
Safety-critical equipment is equipment whose failure could cause, permit, or fail to prevent a major safety consequence.
Proof Test
A proof test is a planned test used to reveal hidden dangerous failures and confirm that a protective or safety function can perform as required.
Maintenance Escalation
Maintenance escalation is the controlled process for notifying higher authority or additional functions when work, risk, delay, or failure exceeds defined limits.
Glossary FAQs
- What is safety-critical maintenance?
Work required to preserve safety-critical equipment and protection functions.
- Why are stronger controls required?
Failure or overdue work can remove a major protection layer.
- What evidence may be required?
Approved procedure, results, competent personnel, independent verification, and controlled closure.