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Oxy-Acetylene Gas Cutting and Heating Risk Assessment

Oxy-Acetylene Gas Cutting and Heating Risk Assessment

  • • 100% Compliant with Australian WHS Acts & Regulations
  • • Fully Editable MS Word & PDF Formats Included
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Oxy-Acetylene Gas Cutting and Heating Risk Assessment

Product Overview

Identify and control organisational risks associated with Oxy-Acetylene Gas Cutting and Heating through a structured, management-level WHS Risk Management approach that supports planning, governance and safe systems of work. This Risk Assessment helps demonstrate Due Diligence under the WHS Act, reducing operational liability and supporting defensible organisational compliance.

Risk Categories & Hazards Covered

This document assesses risks and outlines management controls for:

  • WHS Governance, Policies and Legal Compliance: Assessment of organisational policies, roles, responsibilities and consultation arrangements for oxy-acetylene operations to ensure alignment with WHS legislation and internal governance frameworks.
  • Competency, Training and Authorisation: Management of competency requirements, licensing, supervision and authorisation processes for personnel involved in gas cutting, heating and associated support activities.
  • Plant and Equipment Design, Selection and Procurement: Evaluation of equipment specifications, safety features, regulators, torches and accessories to ensure compliant selection, procurement and lifecycle management for oxy-fuel systems.
  • Inspection, Maintenance and Asset Management: Systems for scheduled inspection, testing, tagging, defect reporting and maintenance of cylinders, hoses, regulators and cutting/heating equipment to minimise failure risk.
  • Gas Cylinder Management, Storage and Transport: Controls for cylinder identification, segregation, upright storage, securing, transport, handling and leak prevention in line with relevant standards and codes.
  • Gas Distribution Systems, Hoses and Connections: Management of hose routing, flashback arrestors, non-return valves, connection integrity, leak testing and isolation procedures across fixed and portable systems.
  • Work Environment, Layout and Ventilation: Assessment of work area design, segregation from incompatible activities, ventilation adequacy, confined space interfaces and control of ignition sources.
  • Hot Work and Fire Risk Management: Protocols for hot work permitting, fire watch arrangements, housekeeping, combustible control, spark and slag containment, and fire detection and suppression readiness.
  • Operational Planning, Permits and Job Sequencing: Planning of tasks, risk-based job sequencing, permit-to-work integration, isolation requirements and coordination with other high-risk activities.
  • Contractor and Supplier Management for Oxy-Fuel Work: Governance of contractor selection, pre-qualification, induction, supervision and performance monitoring for third parties undertaking oxy-acetylene work.
  • Personal Protective Equipment Program and Fit-for-Work Management: Establishment of PPE standards, issue, maintenance and replacement, along with fatigue, impairment and fitness-for-work controls for gas cutting and heating activities.
  • Emergency Preparedness, Incident Response and First Aid: Planning for gas leaks, flashbacks, burns, fires and explosions, including emergency equipment, evacuation procedures, drills and first aid capability.
  • Documentation, Records and Change Management: Control of procedures, permits, training records, inspection logs and management of change processes for plant, materials, methods and organisational structure.
  • Health Monitoring, Exposure Control and Ergonomics: Assessment of fume and heat exposure, noise, manual handling, posture and task design, including monitoring programs and engineering/administrative controls.

Who is this for?

This Risk Assessment is designed for Business Owners, Operations Managers, Safety Managers and WHS Advisors responsible for planning, approving and overseeing oxy-acetylene gas cutting and heating operations within their organisation.

Hazards & Risks Covered

Hazard Risk Description
1. WHS Governance, Policies and Legal Compliance
  • • Absence of a documented oxy-acetylene cutting and heating policy aligned with WHS Act 2011 and WHS Regulations
  • • Failure to identify and comply with relevant Australian Standards (e.g. AS 4839, AS 2030, AS 4332, AS/NZS 5601 where applicable)
  • • Unclear allocation of PCBU, officer, supervisor and worker duties regarding oxy-fuel operations
  • • Lack of formal WHS objectives and performance indicators specific to hot work and gas systems
  • • Inadequate consultation with workers and health and safety representatives on oxy-fuel risks and controls
  • • No systematic review of incidents, near misses and audit findings related to oxy-fuel equipment
2. Competency, Training and Authorisation
  • • Workers using oxy-acetylene cutting and heating equipment without formal training or competency assessment
  • • Supervisors lacking technical understanding of oxy-fuel hazards, leading to poor oversight
  • • No differentiation between basic users and personnel authorised for complex tasks (e.g. plate cutting attachments, propane ignition, repairs with oxy-fuel torches)
  • • Inadequate training on specific hazards of oxygen-enriched atmospheres, flashback, backfire, leaks and cylinder handling
  • • Failure to provide refresher training, leading to skill fade and normalisation of deviance
  • • Contractors performing gas cutting or soldering without verification of competency or licences where required
3. Plant and Equipment Design, Selection and Procurement
  • • Procurement of non-compliant or substandard oxy-acetylene equipment, cutting torches and heating attachments
  • • Use of incompatible components (hoses, regulators, flashback arrestors, fittings) between oxygen, acetylene and LPG/propane systems
  • • Absence of built-in safety features such as non-return valves and thermal shut-off devices on torches and regulators
  • • Inadequate design of cutting attachments for plate cutting, rod cutting or heating, leading to unstable operation or overheating
  • • Failure to specify equipment suitable for the intended duty cycle and environment (e.g. site repairs vs workshop use)
  • • Lack of standardisation of equipment across the business, creating confusion in setup and maintenance
4. Inspection, Maintenance and Asset Management
  • • Lack of a scheduled maintenance program for regulators, torches, hoses, flashback arrestors and cutting/heating attachments
  • • Internal hose deterioration leading to leakage, flashback or oxygen-fuel mixing
  • • Failure to remove damaged or out-of-test equipment from service (including cylinders and regulators)
  • • No system for periodic integrity testing of flashback arrestors and non-return valves
  • • Inadequate record-keeping of inspections, repairs and replacements
  • • Ad hoc repairs or unauthorised modifications to oxy-fuel equipment by unqualified personnel
5. Gas Cylinder Management, Storage and Transport
  • • Improper storage of oxygen, acetylene and LPG/propane cylinders, increasing risk of fire, explosion or oxygen enrichment
  • • Inadequate segregation of full and empty cylinders or incompatible gases
  • • Cylinders unsecured during storage or internal transport, leading to falls, valve damage or projectile hazards
  • • Use of out-of-test or unidentified cylinders due to poor tracking
  • • Inadequate controls for vehicle transport of cylinders (upright restraint, ventilation, valve protection)
  • • Lack of clear labelling and safety signage in storage areas for multiple gas types
6. Gas Distribution Systems, Hoses and Connections
  • • Leaking connections, regulators or hoses causing flammable gas accumulation or oxygen enrichment
  • • Use of incorrect hose types (e.g. oxygen hose used for fuel gas) or incorrect colour coding
  • • Hose routing through high traffic or sharp edge areas leading to mechanical damage and failure
  • • Inadequate system for leak testing when connecting cylinders or changing hoses and cutting attachments
  • • Use of makeshift adaptors or fittings not rated for oxy-fuel service
  • • Lack of documented standards for hose lengths, pressure settings and manifold use
7. Work Environment, Layout and Ventilation
  • • Conducting oxy-fuel cutting, heating or soldering in poorly ventilated areas leading to accumulation of fumes, combustion products or flammable gases
  • • Inadequate separation between hot work areas and combustible materials, fixed plant or process lines
  • • Cluttered workspaces leading to trip hazards, hose entanglement and uncontrolled movement of torches
  • • Incomplete assessment of confined spaces or partially enclosed areas where oxy-fuel equipment is used
  • • Poorly designed workstations for plate cutting, rod cutting and repairs, increasing risk of fire spread or personnel exposure
  • • Lack of environmental monitoring for oxygen levels and flammable atmospheres where warranted
8. Hot Work and Fire Risk Management
  • • Ignition of nearby combustible materials during gas cutting, plate cutting, rod cutting or heating operations
  • • Failure to manage sparks, slag and hot metal travelling beyond the immediate work area
  • • No formal hot work permit system for non-designated areas, including during plant repairs and modifications
  • • Inadequate fire watch arrangements, particularly for work above ground level or near concealed cavities
  • • Insufficient fire protection equipment or poorly maintained extinguishers and fire blankets
  • • Lack of pre-job assessment for hidden services (cables, pipes, fuel lines) in the cutting or heating zone
9. Operational Planning, Permits and Job Sequencing
  • • Unplanned or reactive oxy-fuel tasks carried out without adequate risk assessment or SWMS review
  • • Poor coordination between multiple trades (e.g. welding, grinding, painting) in shared work areas, leading to conflicting risks
  • • No formal process to plan complex cutting sequences, large plate cutting jobs or multi-torch operations
  • • Failure to consider interaction with production operations, vehicle movements or public access areas
  • • Inadequate communication of changes to job scope that alter oxy-fuel risks (e.g. change of location or material thickness)
10. Contractor and Supplier Management for Oxy-Fuel Work
  • • Contractors conducting oxy-acetylene cutting, soldering or repairs without alignment to site WHS systems
  • • Inconsistent standards of equipment maintenance and testing between contractors and principal contractor
  • • Insufficient induction of contractors on local hot work permit, emergency response and reporting procedures
  • • Reliance on contractor procedures that may not meet Australian WHS legislative requirements or site standards
  • • Poor oversight of third-party cylinder suppliers and gas distribution system installers
11. Personal Protective Equipment Program and Fit-for-Work Management
  • • Reliance on PPE as the primary control instead of part of a managed hierarchy of controls
  • • Inconsistent provision and enforcement of PPE for oxy-fuel cutting, heating and soldering (e.g. eye, face, hand and respiratory protection)
  • • Failure to assess health conditions or medications that may impair safe operation of torches or emergency response
  • • Inadequate arrangements for managing fatigue, heat stress or visibility issues caused by PPE and hot work environments
  • • No system to ensure PPE is maintained, replaced and compatible with other equipment (e.g. face shields with respirators)
12. Emergency Preparedness, Incident Response and First Aid
  • • Delayed or ineffective response to gas leaks, flashback, fires or explosions involving oxy-fuel equipment
  • • Lack of clear emergency shutdown procedures for cylinders, regulators and torches
  • • Workers untrained in first aid for burns, smoke inhalation or eye injuries caused by hot work
  • • Inadequate communication systems to raise alarms in remote or isolated oxy-fuel work locations
  • • Poor post-incident investigation and corrective action processes, allowing recurrence of similar events
13. Documentation, Records and Change Management
  • • Outdated or inconsistent procedures for oxy-acetylene and LPG/propane cutting and heating
  • • Loss of critical records such as training, maintenance, permits and inspections, making it difficult to verify compliance
  • • Uncontrolled introduction of new equipment, gases or cutting attachments without formal risk review
  • • Lack of version control leading to workers using superseded SWMS or manufacturer instructions
  • • Inadequate documentation of engineering changes to gas distribution systems or workshop layouts
14. Health Monitoring, Exposure Control and Ergonomics
  • • Chronic exposure to fumes, combustion products and heat from repeated oxy-fuel cutting and heating tasks
  • • Poor ergonomic design of cutting stations, leading to musculoskeletal strain during plate cutting, rod cutting or prolonged torch use
  • • Insufficient controls for noise, vibration and radiant heat from high-intensity heating torches
  • • Lack of monitoring for worker comfort and early signs of overexposure or fatigue when using torches in awkward positions
  • • Underestimation of combined exposure when oxy-fuel is used in conjunction with welding, grinding or other hot work

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Legislation & References

This document was researched and developed to align with:

  • Work Health and Safety Act 2011
  • Work Health and Safety Regulations 2017
  • AS/NZS ISO 31000:2018: Risk management — Guidelines
  • Safe Work Australia – Managing Risks of Hazardous Chemicals in the Workplace Code of Practice: Guidance on safe storage, handling and risk control for compressed and flammable gases.
  • Safe Work Australia – Welding Processes Code of Practice: Requirements and guidance for managing health and safety risks associated with welding, cutting and allied processes.
  • Safe Work Australia – Managing the Risk of Falls at Workplaces Code of Practice: Where oxy-fuel cutting and heating is undertaken at height or on structures.
  • AS 4839: The safe use of portable and mobile oxy-fuel gas systems for welding, cutting, heating and allied processes.
  • AS 4332: The storage and handling of gases in cylinders.
  • AS/NZS 60079 (series): Explosive atmospheres — Requirements for equipment and work in potentially flammable environments.
  • AS 1674.1: Safety in welding and allied processes – Fire precautions.
  • AS/NZS ISO 45001:2018: Occupational health and safety management systems — Requirements with guidance for use.
Standard Risk Assessment Features (Click to Expand)
  • Comprehensive hazard identification for all activities
  • Risk rating matrix with likelihood and consequence analysis
  • Existing control measures evaluation
  • Residual risk assessment after controls
  • Hierarchy of controls recommendations
  • Action priority rankings
  • Review and monitoring requirements
  • Consultation and communication records
  • Legal compliance references
  • Sign-off and approval sections

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Safe Work Australia Aligned