Write a risk assessment for Site hazard identification

A sound workplace risk assessment and site hazard identification procedure should be task-based, site-specific, documented, and reviewed before work starts and whenever conditions change. A field-level or job hazard analysis process should identify each step of the work, the hazards at each step, the risk level based on likelihood and severity, existing controls, and any additional controls required before proceeding. Workers who perform the job should be involved because their frontline knowledge is valuable for identifying hazards and practical solutions. [1] [4] [18]

1. Define the job, location, people involved, tools, materials, equipment, and environmental conditions.
2. Break the work into clear task steps and observe the job being performed.
3. Identify hazards at each step, including obvious and less visible hazards such as struck-by, caught-between, falls, chemical exposure, ergonomic strain, repetitive motion, electrical contact, noise, weather, traffic, and site-specific conditions.
4. Evaluate risk for each hazard by considering who or what is exposed, what could go wrong, the likely consequences, and the likelihood and severity of injury.
5. Assign priority so the highest-risk hazards are controlled first.
6. Identify existing controls and determine whether they are adequate before work begins.
7. Select additional controls using the hierarchy of controls: elimination, substitution, engineering controls, administrative controls, then PPE.
8. Document the assessment, communicate it in a pre-job briefing, and update it if site conditions, scope, personnel, or equipment change.
9. Monitor the work, inspect the site regularly, investigate incidents and near misses, and review whether controls remain effective.

[4] [4] [10] Hazard identification should combine a baseline workplace survey with job-specific and field-level review. Assess work processes, tasks, equipment, chemicals, access/egress, energy sources, environmental conditions, and surrounding activities. Use safety data sheets for chemical hazards, equipment manuals for manufacturer warnings and recommended PPE, incident history for recurring problems, and routine inspections to detect new hazards. If work occurs at multiple sites, assess each site because hazards can differ significantly. [6] [6] [8]

Risk evaluation should consider exposure, consequence, probability, and priority. A practical method is to rate each hazard by severity and likelihood, then assign a risk code or ranking to determine action urgency. High-risk work should not proceed until controls are implemented. The assessment should also identify body parts at risk and whether residual risk remains after controls are applied. [7] [5] [14]

Control measures should follow the hierarchy of controls in order of effectiveness. First try to eliminate the hazard entirely. If that is not feasible, substitute with a safer material, tool, or method. Next use engineering controls to isolate people from the hazard, such as guarding, ventilation, enclosures, interlocks, lifting devices, or fall protection systems. Then apply administrative controls such as procedures, permits, restricted access, scheduling, supervision, maintenance, signage, and competency requirements. PPE should be the last line of defense or used as supplemental protection when higher-level controls do not fully reduce risk or when temporary or emergency conditions exist. [2] [9] [12]

• Elimination: remove the task or hazard entirely, redesign the job, or perform the work from the ground instead of at height.
• Substitution: replace hazardous chemicals, tools, or methods with safer alternatives.
• Engineering controls: machine guards, local exhaust ventilation, enclosures, interlocks, guardrails, mechanical lifting devices, noise dampening, isolation, and safer access systems.
• Administrative controls: safe work procedures, permits, training, supervision, job rotation, work-rest schedules, restricted access, warning signs, preventive maintenance, housekeeping, and emergency response planning.
• PPE: eye and face protection, head protection, hand protection, foot protection, hearing protection, respiratory protection, fall protection, leg protection, torso/body protection, and flotation devices where applicable.

[2] [17] [6] Mitigation actions and safe work practices should be built into the job plan and daily execution. These include written safe work procedures or standard operating procedures, pre-job briefings, competent supervision, equipment inspection and maintenance, housekeeping, hygiene controls, emergency preparedness, and stopping work when conditions change or controls are no longer adequate. A site-specific briefing should review the JHA, communicate hazards for the day, and be repeated if conditions change. [4] [17] [15]

• Conduct a pre-start site walkdown and verify access, lighting, weather, housekeeping, energy isolation, emergency routes, and nearby operations.
• Confirm workers are trained, authorized, medically fit where required, and understand the task, hazards, and controls.
• Inspect tools, machinery, guards, ladders, lifting gear, electrical equipment, and PPE before use.
• Use permits and isolation procedures where applicable, such as lockout/tagout, hot work, confined space, excavation, line breaking, or work at height.
• Maintain good housekeeping to prevent slips, trips, fire load, contamination, and blocked exits.
• Apply hygiene controls such as handwashing, no eating or drinking in contaminated areas, and separation of hazardous substances from food.
• Stop work and reassess if weather, layout, staffing, equipment, or process conditions change.

[9] [15] [4] PPE requirements must be based on a documented hazard assessment and matched to the specific hazards and body parts at risk. Employers should select PPE that fits each worker, communicate selection decisions, train workers in proper use, care, limitations, and maintenance, and ensure PPE remains in safe condition and is actually used. PPE is not a substitute for higher-level controls, but it is essential where residual risk remains. [19] [3] [13]

Incident prevention depends on more than a one-time assessment. Employers should encourage hazard reporting, investigate incidents, injuries, illnesses, and near misses, analyze trends, and verify that controls are effective and do not create new hazards. Regular inspections and periodic reassessment are necessary, especially after changes to equipment, materials, processes, or site conditions. Emergency procedures should be written, equipment and supplies should be available, and workers should practice response actions for spills, fires, injuries, and other foreseeable events. [10] [13] [9]

For compliance with occupational health and safety requirements, the procedure should include documented hazard assessments, PPE assessments where required, worker involvement, communication of hazards and controls, training, supervision, and periodic review. For PPE hazard assessments, documentation should identify the workplace, certifier, and assessment date, and general industry employers must maintain certification records. Even where a JHA is not explicitly mandated, it is a recognized best practice that helps employers meet their duty to provide safe and healthful work. [8] [19] [18]

• Use a standard form that captures job/task step, hazard, consequence, likelihood, severity, risk rating, current controls, additional controls, responsible person, and completion status.
• Complete a baseline assessment for the workplace and a field-level assessment before starting work each day.
• Involve supervisors, workers, and where needed a competent safety professional.
• Prioritize high-risk tasks and jobs with accident history, near misses, non-routine work, or changing conditions.
• Implement controls according to the hierarchy and verify they are in place before work starts.
• Document PPE decisions and certification details where required.
• Brief the crew before work, update the assessment when conditions change, and keep the document as a living record.
• Inspect, audit, and review the effectiveness of controls through observations, testing, incident investigations, and worker feedback.

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