Product Overview

Summary: This Tank Cleaning Safety Safe Operating Procedure sets out a clear, step-by-step method for planning and conducting tank cleaning tasks safely in Australian workplaces. It helps control the significant risks of confined space entry, hazardous atmospheres and chemical exposure, while supporting compliance with WHS legislation and industry best practice.

Tank cleaning is one of the highest-risk maintenance activities carried out in industrial, manufacturing, water and wastewater, agricultural and fuel storage environments. Workers may be exposed to hazardous atmospheres, flammable vapours, engulfment, chemical residues, biological contaminants and extreme manual handling demands, often within confined spaces. This Tank Cleaning Safety Safe Operating Procedure provides a structured, practical framework to manage these risks from planning through to completion and sign-off.

Developed for Australian conditions and WHS requirements, the SOP guides you through hazard identification, risk assessment, isolation and lockout, atmospheric testing, confined space entry controls, ventilation, cleaning methods, waste management and emergency response. It helps standardise how tank cleaning is authorised, supervised and documented, ensuring that every job—whether performed by in‑house teams or contractors—follows the same defensible safety process. By implementing this procedure, businesses can reduce incident rates, improve worker confidence, and demonstrate due diligence to regulators, clients and insurers.

Key Benefits

• Ensure compliance with Australian WHS legislation and confined space requirements for tank cleaning activities.
• Reduce the risk of fatalities and serious injuries from hazardous atmospheres, engulfment, slips, trips and falls inside tanks.
• Standardise planning, permitting, isolation and entry procedures across all tank cleaning tasks and sites.
• Improve coordination between supervisors, tank entrants, standby personnel and contractors through clearly defined roles and communication protocols.
• Provide clear, rehearsed emergency and rescue arrangements specific to tank cleaning operations.

Who is this for?

• Operations Managers
• WHS Managers
• Site Supervisors
• Maintenance Supervisors
• Confined Space Entry Supervisors
• Tank Cleaning Technicians
• Industrial Services Contractors
• HSE Advisors
• Plant Managers
• Facilities Managers

Hazards Addressed

• Atmospheric hazards including oxygen deficiency, toxic gases and vapours, and flammable atmospheres within tanks
• Confined space entry risks, including entrapment, disorientation and difficulty in rescue
• Engulfment in liquids, sludge, product residues or foam
• Exposure to hazardous chemicals, corrosive residues, hydrocarbons and biological contaminants
• Fire and explosion from flammable vapours, static electricity or ignition sources
• Manual handling injuries from handling hoses, high-pressure equipment and access equipment
• Slips, trips and falls on wet, contaminated or uneven surfaces inside and around tanks
• Noise and high-pressure water or chemical jet injuries
• Heat stress, cold stress and fatigue in enclosed or outdoor tank environments
• Struck-by and crush injuries from moving plant, vacuum trucks, agitators or mixing equipment

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Regulatory Context
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Pre-Job Planning and Risk Assessment
• 5.0 Tank Isolation, Lockout/Tagout and De-energisation
• 6.0 Cleaning Methods and Equipment Selection (manual, mechanical, high-pressure, chemical)
• 7.0 Confined Space Entry Controls and Permit-to-Work
• 8.0 Atmospheric Testing, Monitoring and Ventilation Requirements
• 9.0 Personal Protective Equipment (PPE) and Respiratory Protection
• 10.0 Access, Egress and Working Inside the Tank
• 11.0 Waste, Sludge and Residue Handling and Disposal
• 12.0 Communication, Standby Person and Supervision Arrangements
• 13.0 Emergency Response, Rescue Planning and First Aid
• 14.0 Post-Cleaning Inspection, Recommissioning and Handover
• 15.0 Training, Induction and Competency Verification
• 16.0 Recordkeeping, Review and Continuous Improvement

Legislation & References

• Work Health and Safety Act 2011 (Cth and relevant state/territory variants)
• Work Health and Safety Regulations 2011 – Confined Spaces, Hazardous Chemicals and Plant
• Safe Work Australia – Code of Practice: Confined Spaces
• Safe Work Australia – Code of Practice: How to Manage Work Health and Safety Risks
• Safe Work Australia – Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace
• Safe Work Australia – Code of Practice: Managing Noise and Preventing Hearing Loss at Work
• AS 2865: Confined spaces
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 1716: Respiratory protective devices
• AS/NZS 60079 series: Explosive atmospheres (for work in potentially flammable environments)
• AS/NZS 1891 series: Industrial fall-arrest systems and devices