Product Overview

Summary: This Diesel Particulate Filter (DPF) Cleaning Safe Operating Procedure sets out safe, consistent methods for inspecting, removing, cleaning and refitting DPF units on diesel-powered plant and vehicles. It helps Australian businesses control exposure to hazardous diesel particulate matter, manage hot work and pressure hazards, and maintain compliance with WHS obligations while maximising equipment uptime.

Diesel particulate filters are critical emissions control components on modern diesel engines, but if they are not cleaned and maintained correctly they can become a significant safety, health and reliability risk. Improper handling can expose workers to concentrated diesel particulate matter and ash residues, create burn risks from hot exhaust components, and lead to exhaust leaks or engine faults that compromise both safety and compliance. This Diesel Particulate Filter Cleaning SOP provides a clear, step-by-step process to manage those risks in line with Australian WHS expectations.

The procedure guides workers from initial planning and isolation of the vehicle or plant, through safe removal, inspection and cleaning of the DPF using approved methods and equipment, to reinstallation, system checks and documentation. It addresses practical challenges commonly faced in Australian workshops and field service environments, such as confined work around exhaust systems, use of compressed air, and handling of contaminated waste. By embedding this SOP into your maintenance program, you create a repeatable system that protects workers from harmful exposures, supports compliance with diesel emissions and WHS requirements, and reduces costly downtime caused by premature DPF failures or incorrect refitting.

Key Benefits

• Reduce worker exposure to diesel particulate matter, ash and cleaning residues through clear control measures and PPE requirements.
• Ensure consistent, manufacturer-aligned cleaning practices that extend DPF service life and reduce unplanned breakdowns.
• Support compliance with Australian WHS legislation and guidance on diesel engine exhausts in workshops, depots and on site.
• Minimise fire, burn and pressure-related risks by standardising isolation, cooling, depressurisation and hot work precautions.
• Streamline training and competency development for mechanics and technicians with a clear, auditable procedure.

Who is this for?

• Workshop Managers
• Diesel Mechanics
• Fleet Maintenance Supervisors
• Plant and Equipment Operators
• WHS Managers
• Heavy Vehicle Service Technicians
• Mining and Civil Maintenance Coordinators
• Agricultural Machinery Service Technicians
• Local Council Fleet Managers

Hazards Addressed

• Exposure to diesel particulate matter and fine ash during DPF removal and cleaning
• Burns from hot exhaust components and recently operated engines
• Fire and ignition risks associated with hot surfaces and combustible residues
• Injuries from use of compressed air or cleaning equipment at high pressure
• Musculoskeletal injuries from awkward postures and manual handling of exhaust components
• Inhalation of fumes from cleaning agents or solvents (where used)
• Environmental contamination from improper disposal of DPF waste and residues

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Abbreviations (including DPF, DEF, regeneration types)
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and Manufacturer Guidance
• 5.0 Required Tools, Equipment and Personal Protective Equipment (PPE)
• 6.0 Pre-Job Planning and Risk Assessment (including SWMS/JSA requirements)
• 7.0 Isolation, Cooling and Verification of Safe Work Conditions
• 8.0 Safe Removal of Diesel Particulate Filter Assembly
• 9.0 Inspection, Damage Assessment and Decision Criteria (clean, replace, or escalate)
• 10.0 Approved DPF Cleaning Methods and Step-by-Step Process
• 11.0 Management of Dust, Emissions and Waste (containment and disposal requirements)
• 12.0 Reinstallation, Leak Checks and System Reset/Calibration
• 13.0 Post-Maintenance Testing, Road Testing and Sign-Off
• 14.0 Hazard Identification and Control Measures (including PPE matrix)
• 15.0 Emergency Procedures (exposure, burns, fire, equipment failure)
• 16.0 Housekeeping, Environmental Controls and Waste Management
• 17.0 Training, Induction and Competency Verification
• 18.0 Recordkeeping, Maintenance Logs and Continuous Improvement
• 19.0 Review, Audit and Document Control

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 – Guidance: Diesel Engine Exhaust Emissions
• Safe Work Australia – Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace
• Safe Work Australia – Code of Practice: Managing the Work Environment and Facilities
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 1716: Respiratory protective devices
• AS/NZS 4801: Occupational health and safety management systems (superseded but still widely referenced)
• AS 2865: Confined spaces (where DPF work is carried out in pits or restricted areas)
• Manufacturer-specific service and safety instructions for DPF systems