Maintenance activities are essential for keeping equipment, machinery, buildings, and workplace systems safe and reliable. However, maintenance work can also involve high-risk tasks such as working on live equipment, moving machinery, elevated areas, confined spaces, hot work, pressure systems, chemicals, and stored energy sources.
Safety in maintenance means planning, controlling, and carrying out maintenance activities in a way that protects workers, contractors, equipment, and nearby operations. It includes identifying hazards before the job starts, applying suitable controls, using competent personnel, and ensuring that work is completed safely before equipment is returned to service.
Maintenance safety is commonly required during:
✦ Machinery servicing and repair
✦ Electrical maintenance and troubleshooting
✦ Mechanical fitting, alignment, and replacement work
✦ Welding, cutting, grinding, and hot work
✦ Cleaning of equipment, tanks, ducts, and process systems
✦ Work at height and access equipment use
✦ Confined space entry and inspection
✦ Hydraulic, pneumatic, steam, and pressure system maintenance
✦ Chemical handling, spill control, and waste removal
Many serious workplace accidents happen during maintenance because equipment is opened, isolated, dismantled, cleaned, adjusted, tested, or restarted. During these activities, workers may be exposed to hazards that are not present during normal operations.
Maintenance work often involves non-routine tasks, changing site conditions, multiple contractors, time pressure, and limited access. If the work is not properly planned and supervised, the risk of injury can increase significantly.
Effective maintenance safety helps organizations to:
✦ Prevent injuries, fatalities, and near-miss incidents
✦ Control hazardous energy during servicing and repair
✦ Reduce equipment breakdowns and unplanned shutdowns
✦ Improve reliability and operational performance
✦ Protect workers, contractors, visitors, and nearby personnel
✦ Ensure compliance with legal, client, and company EHS requirements
✦ Improve emergency preparedness and response
✦ Strengthen overall workplace safety culture
Poorly controlled maintenance can lead to severe consequences. These incidents may occur due to lack of planning, poor communication, missing isolation, inadequate supervision, unsafe tools, or failure to follow procedures.
Common risks include:
✦ Unexpected start-up of machinery during cleaning or repair
✦ Electric shock, arc flash, or contact with live electrical parts
✦ Crushing, entanglement, or trapping in moving machinery
✦ Falls from ladders, platforms, scaffolds, or roofs
✦ Fire or explosion during hot work or chemical maintenance
✦ Exposure to hazardous chemicals, fumes, dust, or vapours
✦ Release of stored pressure from hydraulic, pneumatic, steam, or gas systems
✦ Oxygen deficiency or toxic gas exposure in confined spaces
✦ Struck-by injuries from dropped tools, materials, or equipment parts
✦ Manual handling injuries from lifting, pulling, or awkward postures
✦ Poor housekeeping leading to slips, trips, and falls
✦ Restarting equipment before guards, covers, or safety devices are restored
Maintenance safety should begin before the job starts. Every maintenance task must be properly planned, risk assessed, communicated, supervised, and verified.
Important control measures include:
✦ Conduct a risk assessment or job safety analysis before starting work
✦ Prepare and communicate a clear method statement or safe work procedure
✦ Ensure workers are trained, competent, and authorized for the task
✦ Apply Lockout/Tagout before servicing, cleaning, or repairing equipment
✦ Isolate electrical, mechanical, hydraulic, pneumatic, thermal, chemical, and stored energy sources
✦ Verify zero energy before starting maintenance work
✦ Use a permit-to-work system for high-risk activities such as hot work, confined space, work at height , lifting, and electrical work
✦ Inspect tools, equipment, ladders, lifting accessories, and access platforms before use
✦ Provide suitable PPE based on the task and hazard involved
✦ Maintain good housekeeping around the maintenance area
✦ Barricade the work area and display warning signs where required
✦ Keep fire extinguishers, spill kits, and first aid arrangements available
✦ Ensure proper ventilation when working with fumes, gases, dust, or chemicals
✦ Communicate clearly between operations, maintenance, contractors, and supervisors
✦ Test equipment safely after maintenance and restore all guards, covers, interlocks, and safety devices before handover
Lockout/Tagout is one of the most important controls for maintenance safety. It prevents unexpected start-up and protects workers from hazardous energy release.
Before maintenance starts, workers must ensure that:
✦ Equipment is shut down properly
✦ Energy sources are identified and isolated
✦ Locks and tags are applied by authorized persons
✦ Stored energy is released or controlled
✦ Equipment is tested to confirm zero energy
✦ Only the person who applied the lock removes it after work completion
Some maintenance activities require additional control through a permit-to-work system. A permit confirms that hazards have been reviewed, precautions are implemented, and responsible persons have approved the work.
Permit-to-work may be required for:
✦ Hot work such as welding, cutting, grinding, and brazing
✦ Confined space entry
✦ Work at height
✦ Electrical maintenance
✦ Excavation work
✦ Lifting operations
✦ Pressure testing
✦ Chemical line breaking or tank cleaning
✦ Maintenance near live plant or operational areas
Maintenance safety does not end when the repair work is completed. Equipment must be checked, tested, and handed over safely before restarting operations.
Before returning equipment to service, ensure that:
✦ All tools, materials, waste, and temporary connections are removed
✦ Machine guards, covers, panels, and interlocks are restored
✦ Safety devices and emergency stops are tested where required
✦ Locks and tags are removed only by authorized persons
✦ The area is cleaned and safe for operation
✦ Operators are informed before restart
✦ Trial run is conducted under supervision
✦ Maintenance records are updated
Safety in maintenance should be managed in line with applicable occupational health and safety requirements, client requirements, and recognized international standards.
Key references may include:
✦ UAE Labour Law and workplace health and safety requirements
✦ UAE Fire and Life Safety Code of Practice
✦ Local Municipality, Civil Defence, Free Zone, and client EHS requirements
✦ ISO 45001 – Occupational Health and Safety Management System
At EHS Management Consultants, we support organizations in improving maintenance safety through risk assessments, site inspections, safety audits, LOTO reviews, permit-to-work assessments, and practical control recommendations.
We help clients identify maintenance-related hazards such as hazardous energy, machine guarding gaps, electrical risks, work-at-height hazards, hot work risks, confined space hazards, chemical exposure, and poor housekeeping.
Our team also supports the preparation of maintenance risk assessments, safe work procedures, LOTO procedures, permit-to-work systems, inspection checklists, toolbox talk materials, emergency response plans, and corrective action plans. By strengthening maintenance safety, organizations can reduce accidents, protect workers, improve equipment reliability, prevent downtime, and build a safer workplace.
Don't wait for an incident to expose gaps in your maintenance safety practices. Partner with our experienced EHS professionals to create a safer, compliant, and more efficient workplace.
Contact EHS Consultants Today