Severity
Catastrophic

Probability
Probable

Rating
High

• Workers on the scaffolding
• Workers working below the scaffolding
• Passersby near the scaffolding
• Contractors working in close proximity to the scaffolding
• Visitors or clients visiting the construction site.

Type of harm

• Head injuries
• Spinal cord injuries
• Broken bones
• Internal injuries
• Concussions

Controls

• Use guardrails and toeboards
• Ensure proper fall protection equipment is worn
• Implement a safe system of work for working at heights
• Conduct regular safety inspections of scaffolding
• Provide adequate training for working at heights
• Utilize fall arrest systems.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Severe

Probability
Occasional

Rating
Medium

• Workers on the scaffolding
• Workers or members of the public below the scaffolding
• Other trades working in close proximity to the scaffolding
• Construction site visitors or passersby
• Emergency responders or rescue teams.

Type of harm

• Falls from height
• Fractures
• Head injuries
• Spinal cord injuries
• Crushing injuries

Controls

• Ensure scaffolding is erected, inspected, and maintained by competent personnel.
• Use base plates and mud sills for stability.
• Secure scaffolding to the building or structure.
• Do not alter or modify scaffolding components.
• Regularly inspect scaffolding for signs of damage or wear.
• Implement a strict loading capacity limit.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Major

Probability
Occasional

Rating
Medium

• Workers on the scaffolding
• Workers below the scaffolding
• Other contractors on the site
• Visitors or passersby
• Equipment or materials on the ground.

Type of harm

• Head injuries
• Spinal cord injuries
• Fractures
• Internal injuries
• Concussions

Controls

• Use debris nets or toe boards.
• Implement a clear exclusion zone below the scaffolding.
• Secure all tools and materials properly.
• Ensure all workers wear hard hats.
• Install guardrails or mesh fencing.
• Regularly inspect scaffolding for potential hazards.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Major

Probability
Probable

Rating
Medium

• Workers on the scaffolding
• Electricians working nearby
• Other construction workers in the vicinity
• Pedestrians passing by the construction site
• Maintenance workers performing tasks on or near the scaffolding

Type of harm

• Electric shock
• Burns
• Cardiac arrest
• Muscle spasms
• Nerve damage

Controls

• Keep scaffolding at least 3 meters away from power lines.
• Ensure scaffolding is properly grounded.
• Use non-conductive materials for the scaffold.
• Use ground fault circuit interrupters (GFCIs) on electrical equipment.
• Conduct regular inspections for electrical hazards.
• Provide training on electrical safety for workers.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Major

Probability
Probable

Rating
Medium

• Construction workers
• Contractors
• Visitors to the construction site
• Delivery personnel
• Inspectors or surveyors

Type of harm

• Fractures
• Sprains
• Cuts and lacerations
• Contusions
• Head injuries

Controls

• Keep the work area clean and free of debris.
• Use non-slip safety footwear.
• Install handrails and toe boards on scaffolding.
• Implement a clear site organization plan.
• Use caution tape to mark hazardous areas.
• Conduct regular inspections for slip and trip hazards.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Catastrophic

Probability
Frequent

Rating
High

• Workers on the scaffolding
• Workers below the scaffolding
• Pedestrians or passersby near the scaffolding
• Other workers on the construction site
• Visitors to the construction site.

Type of harm

• Falls from height
• Musculoskeletal injuries
• Crush injuries
• Head injuries
• Fractures

Controls

• Ensure scaffolding is erected and dismantled by competent and trained personnel.
• Follow manufacturer’s instructions and guidelines for proper erection and dismantling procedures.
• Conduct regular inspections by competent persons to identify and address any issues.
• Use appropriate tools and equipment for erection and dismantling tasks.
• Provide adequate supervision to ensure safe practices are followed.
• Implement a permit-to-work system to formally authorize and control erection and dismantling activities.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Catastrophic

Probability
Frequent

Rating
High

• Workers on scaffolding
• Workers on the ground
• Passersby
• Delivery personnel
• Site visitors

Type of harm

• Hypothermia
• Frostbite
• Heat exhaustion
• Sunburn
• Dehydration

Controls

• Monitor weather forecasts regularly
• Implement temporary protection (e.g., covering)
• Secure loose materials and equipment
• Stop work during severe weather conditions
• Provide shelter for workers
• Train workers on weather-related risks and emergency procedures.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Major

Probability
Probable

Rating
Medium

• Workers directly using the equipment
• Supervisors overseeing the work
• Other tradespeople working nearby
• Site visitors or inspectors
• Maintenance personnel working on the equipment.

Type of harm

• Falls from height
• Musculoskeletal injuries
• Crush injuries
• Electrocution
• Traumatic brain injury

Controls

• Provide extensive training for workers on the proper use of equipment.
• Regularly inspect and maintain equipment to ensure it is safe for use.
• Implement a permit-to-work system for using equipment.
• Enforce strict disciplinary measures for non-compliance with safety protocols.
• Provide clear signage and instructions on equipment operation.
• Conduct regular safety audits to identify and address any issues with equipment use.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Catastrophic

Probability
Frequent

Rating
High

• Workers on the scaffolding
• Other workers on the site
• Pedestrians passing by
• Supervisors responsible for the workers
• Visitors or inspectors on-site.

Type of harm

• Fall from height
• Head injuries
• Back injuries
• Fractures
• Electric shock.

Controls

• Provide comprehensive training on safe scaffolding practices.
• Implement on-site supervision to monitor and guide workers.
• Conduct regular safety briefings and toolbox talks.
• Ensure all personnel hold relevant certifications.
• Encourage open communication for reporting concerns.
• Establish a clear chain of command for decision-making.

Severity
Minor

Probability
Improbable

Rating
Low

Severity
Severe

Probability
Frequent

Rating
High

• Workers on the scaffolding
• Workers below the scaffolding
• Passersby or members of the public
• Other construction workers in the vicinity
• Emergency responders

Type of harm

• Falls
• Fractures
• Traumatic brain injuries
• Spinal cord injuries
• Crush injuries.

Controls

• Ensure scaffolding is designed and erected by competent personnel
• Regularly inspect scaffolding for signs of overloading
• Display maximum load capacities clearly
• Train workers on weight limits and safe loading practices
• Use appropriate signage to indicate load restrictions
• Implement a system for monitoring and controlling loads on scaffolding

Severity
Minor

Probability
Improbable

Rating
Low