Product Overview

Summary: This Diesel Fuel System Maintenance Safe Operating Procedure provides a clear, step-by-step framework for inspecting, servicing and maintaining diesel fuel systems safely and efficiently. It is designed to minimise fire, explosion, environmental and health risks while supporting WHS compliance and reliable plant and vehicle performance across Australian workplaces.

Diesel fuel systems are critical to the safe and reliable operation of mobile plant, generators, heavy vehicles and fixed equipment across Australian industries such as construction, mining, agriculture, transport and facilities management. Poorly maintained fuel systems can lead to leaks, fires, environmental contamination, unplanned breakdowns and costly downtime. This Diesel Fuel System Maintenance SOP sets out a structured, repeatable process for conducting inspections, routine servicing and repairs in a way that protects workers, assets and the environment while meeting WHS obligations.

The procedure covers the full lifecycle of diesel fuel system maintenance activities, from pre-start checks, isolation and depressurisation through to contamination control, filter changes, hose and fitting inspections, leak management, spill response and post-maintenance testing. It clarifies who is authorised to perform specific tasks, the PPE required, and the engineering and administrative controls that must be in place before work begins. By implementing this SOP, businesses can demonstrate due diligence, reduce the risk of fire and explosion, manage diesel spills and vapour exposure, and standardise maintenance practices across workshops and sites, regardless of whether work is carried out in-house or by contractors.

Key Benefits

• Reduce the risk of diesel-related fires, explosions and burns through clearly defined safe work steps and isolation requirements.
• Ensure compliance with Australian WHS legislation and relevant environmental obligations for handling and storing diesel fuel.
• Improve reliability and performance of diesel-powered plant and vehicles by standardising inspection and maintenance intervals.
• Minimise diesel leaks, spills and soil or water contamination with robust containment and clean-up procedures.
• Streamline training and onboarding for mechanics, technicians and operators with a clear, documented maintenance process.

Who is this for?

• Fleet Managers
• Workshop Supervisors
• Diesel Mechanics
• Maintenance Technicians
• Plant Operators
• Site Supervisors
• WHS Managers
• Facilities Managers
• Operations Managers
• Transport and Logistics Managers

Hazards Addressed

• Fire and explosion risks from diesel fuel vapours and mist near ignition sources
• Skin and eye contact with diesel fuel and cleaning solvents
• Inhalation of diesel vapours and exhaust emissions in poorly ventilated areas
• High-pressure fuel injection injuries during testing, bleeding or line disconnection
• Slips, trips and falls caused by spilled fuel or lubricants on workshop floors
• Manual handling injuries when lifting fuel containers, filters or components
• Environmental contamination from diesel spills, overfills and leaking tanks or lines
• Burns from hot engine components and exhaust systems during maintenance
• Exposure to noise and vibration from running engines during testing and diagnostics

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Abbreviations
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and References
• 5.0 Required Tools, Equipment and Materials
• 6.0 Personal Protective Equipment (PPE) Requirements
• 7.0 Pre-Maintenance Planning and Risk Assessment
• 8.0 Isolation, Lockout/Tagout and Verification of Zero Energy
• 9.0 Diesel Fuel System Inspection Checklist
• 10.0 Routine Maintenance Procedures (Filters, Lines, Pumps, Injectors, Tanks)
• 11.0 High-Pressure Fuel System Safety and Testing Controls
• 12.0 Spill Prevention, Containment and Clean-Up Procedures
• 13.0 Ventilation and Hazardous Atmosphere Controls
• 14.0 Waste Management and Environmental Protection
• 15.0 Post-Maintenance Recommissioning and Functional Testing
• 16.0 Emergency Procedures (Fire, Exposure, Injection Injury, Major Spill)
• 17.0 Training, Induction and Competency Verification
• 18.0 Documentation, Recordkeeping and Maintenance Scheduling
• 19.0 Inspection, Review and Continuous Improvement of the SOP

Legislation & References

• Work Health and Safety Act 2011 (Cth) and corresponding state and territory WHS Acts
• Work Health and Safety Regulations 2011 (Cth) and corresponding state and territory WHS Regulations
• Safe Work Australia – Managing Risks of Hazardous Chemicals in the Workplace: Code of Practice
• Safe Work Australia – Managing the Risk of Plant in the Workplace: Code of Practice
• Safe Work Australia – Managing Noise and Preventing Hearing Loss at Work: Code of Practice
• AS 1940: The storage and handling of flammable and combustible liquids
• AS/NZS 60079 (series): Explosive atmospheres (where applicable to hazardous areas)
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 2161 (series): Occupational protective gloves
• AS/NZS 1891 (series): Industrial fall-arrest systems and devices (where work at height is involved)