Safety Management System (SMS)
Definition
A formal, documented framework of policies, procedures, responsibilities, and performance monitoring through which an organisation identifies hazards, assesses risks, and manages safety performance.
- Structure
- Documented policies, procedures and responsibilities
- Core functions
- Hazard identification, risk assessment, performance monitoring
- Common sectors
- Aviation, rail, oil and gas, industrial plants
- Forensic relevance
- Reviewed after major incidents for systemic failure
Common questions
How is an SMS used differently from a single safety procedure document?+
A single procedure covers one task, while an SMS is the overarching framework that ties hazard reporting, risk assessment, training, auditing and management accountability together across an entire organisation, so gaps in any one procedure should surface through the system as a whole.
What does a forensic or systemic-failure investigator look for in an SMS record?+
Investigators typically check whether hazards were actually identified and escalated through the documented channels, whether corrective actions were tracked to closure, and whether the paper system matched what workers actually did on the floor, since a gap between the two is a common root cause finding.
Does having an SMS in place mean an organisation is legally protected after an incident?+
No. An SMS that exists only on paper, or one whose findings were never acted on, can itself become evidence of negligence rather than a defence, because it shows the hazard was known and not adequately managed.
Related terms
- Active Failure
- An error or rule violation by a front-line operator whose effects are felt immediately. Active failures are the triggers Reason calls 'unsafe...
- Blowout Preventer (BOP)
- A large specialised valve or series of valves installed at the wellhead of an oil or gas well to seal, control, and...
- Bow-Tie Analysis
- A risk-visualisation method combining a fault tree (left of the bow-tie, hazard to critical event) with an event tree (right, critical event...
- Latent Condition
- In Reason's model, a pre-existing organisational weakness (poor design, defective procedure, unrealistic scheduling, inadequate training) that lies dormant until aligned with other...
- Swiss Cheese Model
- James Reason's accident causation model representing each defensive barrier as a cheese slice with holes. An accident occurs when holes in successive...