Process Safety Management Fundamentals and Leadership
What process safety management is
PSM is a management system aimed at preventing catastrophic releases of hazardous substances and major accident events. It differs from occupational safety: the concern is low-probability, high-consequence events affecting many people, plant and environment, not slips and trips. Candidates must know the core elements - hazard identification and risk assessment, engineering and design integrity, operating procedures, competence and training, management of change, pre-startup safety review, mechanical integrity, permit-to-work, contractor management, emergency planning, incident investigation, auditing and management review. Frameworks such as the US OSHA PSM standard and the EU Seveso regime are commonly referenced, but exam questions test understanding of the elements rather than clause numbers.
Leadership and safety culture
Leadership commitment is the foundation: visible priority given to process safety, adequate resources, clear accountability, and a culture where bad news travels upward. Understand the distinction between personal (occupational) safety performance and process safety performance indicators, and between lagging indicators (incidents, releases) and leading indicators (alarm management, overdue inspections, procedure quality).
Traps in questions
- Treating PSM as identical to occupational health and safety.
- Assuming a low injury rate means low major accident risk - the classic trap.
- Confusing management of change with minor like-for-like replacement.
- Forgetting that leadership accountability cannot be delegated to a safety manager.
Rule of thumb
If a change or activity could affect the integrity of a hazardous process, assume a full PSM element applies until proven otherwise; document the decision.