Safe Practices for Demolition Work
The Problem
Demolition work is one of the most hazardous activities in construction. Uncontrolled collapses, falling debris, exposure to hazardous materials, and improper use of tools and equipment can lead to serious injuries or fatalities. Today, we’ll discuss the key hazards in demolition work and how we can address them to ensure a safe and compliant workplace.
Identify the Hazards
- Structural Instability: Unpredictable collapses during demolition can trap workers or cause falling debris.
- Falling Objects: Tools, materials, or structural elements may fall unexpectedly, endangering workers below.
- Exposure to Hazardous Materials: Asbestos, lead, and silica can be released during demolition.
- Improper Equipment Use: Misuse of tools like sledgehammers or machinery like excavators can result in injuries.
- Electrical Hazards: Live wires or improper disconnection of utilities can lead to electrocution.
- Uncontrolled Debris: Flying fragments from cutting or breaking operations can injure nearby workers.
Safety Practices and Preventative Measures
Pre-Demolition Planning:
- Conduct an engineering survey or assessment to evaluate structural conditions and identify potential hazards.
- Ensure all utilities—gas, water, and electricity—are safely disconnected and isolated prior to work commencing.
Use Proper PPE:
- Wear hard hats, safety glasses, gloves, steel-capped boots, and respiratory protection where required.
- Use fall protection systems when working at height in accordance with WorkSafe NZ’s fall prevention guidance.
Control Falling Objects:
- Set up barricades and warning signs to keep non-essential personnel clear of danger zones.
- Prevent workers from standing under overhead demolition activities.
Safe Equipment Use:
- Inspect tools and machinery before use to ensure they are in good condition.
- Operate all equipment only as intended and ensure operators are trained and competent.
Handle Hazardous Materials Safely:
- Test for asbestos, lead, silica, and other hazardous materials before starting work.
- Manage and remove hazardous substances in accordance with the Health and Safety at Work (Asbestos) Regulations 2016 and other applicable standards.
- Wear suitable PPE when handling or disposing of hazardous materials.
Communication and Coordination:
- Use radios or other communication devices to keep workers informed of demolition activity.
- Designate a competent person to supervise and enforce safety procedures throughout the demolition process.
Emergency Preparedness:
- Have an emergency plan in place, including clear evacuation routes, emergency contacts, and first aid provisions.
Real-Life Case or Scenario
Last year, a worker was seriously injured when a structural beam collapsed during an unscheduled demolition. The team failed to carry out a structural survey, and the collapse occurred without warning. This highlights the importance of pre-demolition assessments and proper planning.
Employee Responsibilities
- Follow the demolition plan and supervisor’s instructions.
- Always wear the required PPE.
- Report unsafe conditions or damaged equipment immediately.
- Do not enter restricted or barricaded areas without authorisation.
Employer Responsibilities
- Conduct structural assessments and hazard identification before demolition begins.
- Provide workers with appropriate PPE and training on its correct use.
- Ensure all services are disconnected and hazardous materials are properly identified and managed.
- Appoint a competent supervisor to monitor demolition safety.
Discussion & Questions
- “What potential hazards have you noticed during demolition tasks?”
- “How do you ensure you’re working safely around falling debris or unstable structures?”
Encourage employees to share experiences or raise concerns about demolition safety practices.
Commitment/Action Plan
Let’s commit to conducting thorough planning and strictly following safety protocols during demolition. Starting today, we’ll prioritise inspections, proper PPE, and clear communication to ensure no one is put at unnecessary risk.
Wrap-Up
Demolition work presents unique challenges, but with proper planning, training, and communication, we can carry out these tasks safely and efficiently. Thank you for your attention and for making safety your priority.
Standards Overview
Under the Health and Safety at Work Act 2015 (HSWA), demolition operations in New Zealand must comply with WorkSafe NZ’s guidance and regulatory requirements. Key responsibilities include:
- Conducting a pre-demolition engineering assessment to evaluate structural integrity and identify hazards
- Managing risks from hazardous substances such as asbestos, lead, and silica
- Ensuring workers use the correct PPE and follow safe demolition procedures
- Supervising the work through a competent person and ensuring workers are properly trained
Disclaimer
These toolbox talks are provided for informational and educational purposes only and are not a substitute for professional legal, health and safety, or regulatory advice.
The content reflects recognised best practices and general industry standards as at the date of publication. However, it may not be applicable to all workplace environments or specific operational contexts.
It is the responsibility of the Person Conducting a Business or Undertaking (PCBU), as well as officers, workers, and other duty holders under the Health and Safety at Work Act 2015 (HSWA), to ensure compliance with all relevant laws, regulations, and WorkSafe New Zealand guidance.
The authors, presenters, and distributors of this toolbox talk disclaim all liability for any loss, damage, or injury arising from the use or reliance on the information provided. Users should seek advice from a suitably qualified health and safety professional or legal advisor for guidance tailored to their specific circumstances.
Always follow your organisation’s policies, procedures, and safe work practices to manage risks and maintain a safe and healthy workplace.
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