Engineering, organisational, procedural change governance with PHA / SIL / FERA triggers
Management of Change is the gatekeeper that prevents uncontrolled modifications from collapsing the risk-control framework. The element maps to OSHA PSM 1910.119(l) and covers any change to chemicals, technology, equipment, procedures, organisation, or operating conditions — except replacement-in-kind. Bhopal, Texas City, Flixborough, BP Macondo — each traceable to changes that bypassed MOC discipline.
MOC is where the organisation either controls its risk or loses control. Every site that has suffered a major incident has an MOC-failure story behind it. Sites that treat MOC as bureaucratic friction lose the discipline; sites that treat it as the central risk-management discipline maintain control through decades of operation. MOC quality is a strong leading indicator of overall PSM maturity.
MOC is the integration point for nearly every other RBPS element. It triggers PHA revalidation (Element 7), PSI updates (Element 6), procedure updates (Element 8), training updates (Element 12), and PSSR (Element 14). Without MOC discipline, every other element drifts. With it, the system stays calibrated to current plant reality.
A focused 6-step methodology calibrated to deliver management of change as a working capability — not a documented compliance artefact.
Define MOC-eligible vs replacement-in-kind boundary; cover chemical, technology, equipment, procedural, organisational; align with CCPS / OSHA guidance.
Per change type, specify mandatory PHA / SIL / FERA / HAC / PSSR re-review; integrate with electronic MOC system (SAP, Maximo, Sphera).
Define MOC initiator, technical reviewer, area approver, area authority signoff; align with risk tier; specify authorisation cycle time.
Pre-startup safety review per OSHA PSM (i) — design / construction match, training complete, procedures updated, PHA actions closed.
MOC backlog tracking, cycle-time KPI, close-out signal to engineering and operations; integrate with corporate HSE governance.
Monthly MOC quality audit, root-cause review of MOC failures, integration with incident lessons-learned.
Decision-gated workflow showing the actual sequence of activities — from initiation through steady-state operation — with key decision points highlighted.
We can scope this element implementation against your facility, regulatory context, and existing management-system maturity — and integrate it with the other Risk Based Process Safety (RBPS) elements you already operate.