Contractor Management: Keep Process Safety Controls Intact During Non-Routine Work

Contractor work changes who is on site, what tasks are happening and how work interfaces with operating equipment. A signed induction cannot manage those changes by itself. The host facility and contractor need a shared view of the scope, hazards, controls, responsibilities and handback conditions.
The South African MHI Regulations, 2022 and their explanatory notes give the national context for major hazard installations. Each facility must identify its applicable legal and permit duties rather than copying requirements from another country. For comparison, U.S. OSHA’s process safety management rule has a specific contractor element covering contractor selection, hazard information, emergency planning, safe work practices and performance review. Those provisions apply under U.S. law; use them here as a checklist reference, not as South African requirements.

Plan before the contractor arrives

• Define the job and boundaries. State the equipment, location, work window, isolations, simultaneous operations and expected handback condition.
• Verify competence for the task. Confirm qualifications, experience, task-specific training, supervision and the contractor’s ability to follow site controls.
• Share hazard information. Explain process materials, operating conditions, nearby equipment, emergency signals, evacuation routes and who can authorise a stop.
• Agree the work controls. Coordinate permits, isolation and testing, line breaking, hot work, confined space entry, lifting, temporary equipment and management of change as applicable.
• Coordinate interfaces. Identify simultaneous operations and resolve differences between site and contractor procedures before work begins.
• Set communication and escalation routes. Name the host contact, contractor supervisor, permit issuer and emergency contact for each shift.
  OSHA’s contractor communication guidance recommends exchanging hazard information before work starts and coordinating scheduling, procedures and emergency communication. Its PSM contractor rule details U.S. employer duties for covered processes. The site must still apply the legal framework that governs its own location.

Control changes during the job

Reassess the job when scope, process conditions, personnel, equipment or timing changes. Stop and review when an isolation cannot be verified, a permit condition changes, a new hazard appears or operating and contractor teams disagree about the work boundary. Document the revised controls and brief affected people before restarting.
At handback, confirm people and tools are clear, temporary connections are removed or controlled, guards and instruments are restored, isolations are managed through the authorised process, documents are updated and the operations team accepts the equipment. Record defects or incomplete work rather than closing the permit to meet a schedule.
MMRisk supports MHI risk assessment and emergency planning and has a guide to permit-to-work controls. Contact our team to review contractor interfaces or prepare training for non-routine work.