Management of Change
Governance of engineering, organisational, and procedural change with PHA, SIL, and FERA triggers
What this element is and why it matters
Management of Change is the gatekeeper that stops 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, with the single exception of replacement in kind. Bhopal, Texas City, Flixborough, and BP Macondo can each be traced back to changes that bypassed MOC discipline, and our team builds the gate that keeps your facility from joining that list.
Individual significance for organisations
MOC is where the organisation either keeps control of its risk or quietly loses it. 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, while sites that treat it as the central risk management discipline keep control through decades of operation. MOC quality is a strong leading indicator of overall PSM maturity.
Contribution to Risk Based Process Safety (RBPS)
MOC is the integration point for nearly every other RBPS element. It triggers PHA revalidation (Element 7), process safety information updates (Element 6), procedure updates (Element 8), training updates (Element 12), and the pre startup safety review (Element 14). Without MOC discipline every other element drifts, and with it the system stays calibrated to current plant reality.
What compliant execution looks like
How we implement this element
A focused six step methodology calibrated to deliver management of change as a working capability rather than a documented compliance artefact.
We define the boundary between an MOC eligible change and a replacement in kind, cover chemical, technology, equipment, procedural, and organisational change, and align it with CCPS and OSHA guidance.
For each change type we specify the mandatory PHA, SIL, FERA, hazardous area classification, and pre startup safety review re review, and integrate it with an electronic MOC system such as SAP, Maximo, or Sphera.
We define the MOC initiator, technical reviewer, area approver, and area authority signoff, align it with the risk tier, and set the authorisation cycle time.
We run the pre startup safety review per OSHA PSM (i), confirming that design and construction match, training is complete, procedures are updated, and PHA actions are closed.
We track the MOC backlog and cycle time KPI, send a close out signal to engineering and operations, and integrate it with corporate HSE governance.
We run a monthly MOC quality audit, a root cause review of MOC failures, and integration with incident lessons learned.
Element implementation flow chart
A decision gated workflow that shows the actual sequence of activities from initiation through steady state operation, with key decision points highlighted.
What we produce
- An MOC scope definition and procedure
- A review trigger matrix per change type
- An electronic MOC system implementation
- Pre startup safety review gate criteria per OSHA PSM (i)
- A backlog tracking dashboard
- An audit programme with a monthly quality review
Where execution fails
- Misclassifying a real change as replacement in kind so it bypasses MOC
- Approval reduced to a rubber stamp with no depth in the technical review
- Information and procedure updates slipping after MOC closure
- An MOC backlog accumulating beyond a manageable size
Codes this element is built on
Explore related elements in this framework
Risk Based Process Safety (RBPS) full element index
Talk to us about implementing Management of Change
We can scope this element implementation against your facility, regulatory context, and existing management system maturity, then integrate it with the other Risk Based Process Safety (RBPS) elements you already operate.