Fire Risk Assessment For Chemical Storage Areas In Australia
A chemical storage area can change rapidly during a fire. Containers may rupture, release flammable vapours, generate toxic smoke, or react with water and neighbouring substances. A sound assessment therefore needs to examine the whole storage system, from chemical selection and segregation to housekeeping, detection, emergency response and worker training.
In Australia, the process sits within workplace health and safety duties, dangerous goods requirements, environmental obligations and local fire regulations. The exact rules vary between jurisdictions, so a site in Brisbane may deal with WorkSafe Queensland requirements while a facility in Melbourne follows Victorian arrangements. The model WHS Regulations, relevant state or territory regulator guidance, Australian Standards and the ADG Code all help shape the control strategy.
A practical assessment should be completed by someone who understands the chemicals, the storage operation and the way a real incident could develop. Training in a live-process environment, such as the practical programs available through HCF CATCH, can help workers recognise hazards that are easy to miss during a paperwork-only inspection.
Define the storage area and its hazards
Start by setting clear boundaries around the assessment. Include bulk tanks, intermediate bulk containers, drums, gas cylinders, decanting points, transfer lines, loading bays, waste containers, fire doors, drainage routes and nearby plant. A spill outside the main store can still create a fire risk if vapour travels towards an ignition source or enters a building through a doorway.
Create a current inventory of every substance and record its Australian GHS classification, quantity, container type and storage location. Pay close attention to flammable liquids, combustible liquids, oxidising agents, organic peroxides, corrosives, toxic substances and chemicals that react dangerously with water or each other. Safety Data Sheets should be available, current and understood by the people using the store.
Consider how the area is actually operated rather than relying on the intended layout. Forklifts may strike containers, contractors may bring unapproved equipment inside, and a delivery may temporarily exceed the normal stock level. Look at shift changes, unattended periods, maintenance work and weather exposure. In regional Queensland, Western Australia or the Northern Territory, long response times and high ambient temperatures may increase the consequences of a small event.
Identify ignition sources and fire scenarios
Walk the area methodically to identify potential ignition sources. These may include electrical equipment, battery chargers, vehicles, hot surfaces, welding, cutting, smoking materials, static electricity, portable heaters and incompatible tools. Classify the hazardous area where flammable vapours or gases could be present, then check that electrical and mechanical equipment is suitable for that atmosphere.
Assess credible fire scenarios for each chemical group. A solvent spill may produce a flash fire, while a leaking LPG cylinder can create a jet fire or vapour cloud explosion. An oxidiser stored beside packaging materials can intensify combustion. A damaged aerosol carton, overheated lithium battery or decomposing peroxide may require a different response from an ordinary liquid fire.
Include human and process failures in the assessment. Examples include leaving a drum bung open, overfilling a container, connecting the wrong hose, bypassing ventilation, parking a forklift beside a flammable store or allowing a contractor to start hot work without a permit. The aim is not to predict every event, but to identify reasonably foreseeable pathways and prevent them before ignition occurs.
Check storage, segregation and fire protection
The storage arrangement should reflect compatibility, quantity and container stability. Use approved cabinets, cages, bunds, pallets and racking designed for the substances held. Keep containers closed, upright, labelled and protected from impact. A bund must be able to contain a credible spill without directing liquid towards exits, drains, ignition sources or other chemical stores.
Segregate incompatible materials using the relevant Safety Data Sheets and dangerous goods guidance. Flammable liquids should not be placed with oxidisers, and acids, alkalis, water-reactive substances and toxic materials may need separate storage arrangements. Do not assume that two products are compatible because they are used in the same process. A chemical supplier or dangerous goods specialist should resolve uncertainty.
Review passive and active fire protection. Fire-rated walls, doors, penetrations and roofs can slow fire spread, while suitable detection, alarms, emergency lighting and extinguishers support evacuation and early response. Sprinklers, foam systems, hydrants and fixed suppression systems must be selected for the hazards present; water is unsuitable or dangerous for some chemicals. Fire equipment must be accessible, inspected and protected from being blocked by stock.
Evaluate ventilation, drainage and environmental consequences
Ventilation is a critical control where flammable or toxic vapours may accumulate. Confirm that air is drawn from the right locations, discharge points are safe and systems are maintained. Consider low-level vapours from liquids that are heavier than air, as well as roof-level accumulation from lighter gases. Ventilation failure should produce an alarm or trigger a safe operating response where the risk justifies it.
Inspect drainage and spill containment as part of the fire assessment. A burning liquid can travel through open drains and spread the incident beyond the storage area. Bunds, sumps and isolation valves should be designed so contaminated firewater does not enter stormwater systems, waterways or neighbouring properties. This matters particularly near industrial estates, ports, rivers and coastal facilities such as those around the Port of Brisbane or Geelong.
Firewater and contaminated runoff may become an environmental emergency. The site emergency plan should identify isolation points, temporary containment equipment and notification arrangements. In bushfire-prone parts of New South Wales, Victoria and South Australia, assess how external embers, grass fires, smoke and loss of power could affect chemical stores. Keep vegetation, packaging and waste away from the building perimeter.
Assess people, procedures and emergency response
The assessment must account for everyone who may enter the area, including operators, cleaners, drivers, maintenance workers, visitors, apprentices and contractors. Record who may be present during each shift, whether anyone works alone, and whether workers can recognise chemical labels, alarms and evacuation signals. Ensure emergency information is accessible to people with limited English or different accessibility needs.
Review operating procedures for receiving, transferring, decanting, sampling, waste handling and cylinder changes. Procedures should cover static control, bonding and earthing, spill response, personal protective equipment, ignition control and escalation. Hot work, confined-space work and electrical maintenance should be managed through a permit system where appropriate.
The emergency plan should state how an alarm is raised, who contacts emergency services, where people assemble and when the area must be abandoned immediately. It should include site maps, chemical inventories, drainage information, access points and details of isolation valves. Fire and Rescue NSW, Fire Rescue Victoria, Queensland Fire and Emergency Services and other local agencies may need accurate information before arriving.
Do not rely on workers fighting a developing chemical fire. Only trained and authorised personnel should use an extinguisher, and only when the fire is small, the correct agent is available and a safe escape route remains open. Run drills at suitable intervals, review the outcomes and include night shifts, visitors and scenarios involving a blocked route or failed alarm.
Record findings and maintain the assessment
Record each hazard, the people exposed, existing controls, the level of risk and the further action required. A useful register identifies an owner, due date and verification method for every action. Photographs, storage plans, inspection records and chemical inventories provide evidence that controls have been checked rather than assumed.
Review the assessment after an incident, near miss, chemical change, layout alteration, new equipment installation or change in operating hours. It should also be reviewed when stock quantities increase or when a new process introduces heat, pressure, dust or vapour. A once-a-year review may be a useful minimum, but significant changes require an earlier reassessment.
Use inspections to test whether controls remain effective. Check cabinet doors, bund integrity, labels, extinguisher access, alarm indicators, ventilation, emergency lighting, spill kits and separation distances. Confirm that expired or unwanted chemicals are removed through an approved disposal pathway. Poor housekeeping is often an early warning that the storage system is losing control.
The assessment should connect with the site’s broader safety management system. Link it to hazardous chemical registers, dangerous goods manifests, training records, maintenance schedules, emergency exercises and contractor controls. For an Australian operation, verify the requirements of the relevant state or territory regulator, local fire authority, planning conditions and Australian Standard AS 1940 where flammable and combustible liquids are stored.
Practical controls to prioritise
- Keep a current chemical inventory with GHS classifications, quantities and accessible Safety Data Sheets.
- Separate incompatible substances and protect containers from impact, heat, weather and unauthorised access.
- Control ignition sources through hazardous-area equipment, hot-work permits, bonding, earthing and no-smoking rules.
- Maintain ventilation, bunding, fire systems, alarms, emergency lighting and clear escape routes.
- Train workers in chemical handling, extinguisher limitations, evacuation, spill control and site-specific emergency procedures.
The following comparison can help distinguish the main assessment areas and the evidence that should support each one:
| Assessment area | Key questions | Useful evidence |
|---|---|---|
| Chemical inventory | What is stored, in what quantity and under which GHS classification? | Inventory, labels, Safety Data Sheets |
| Compatibility | Could stored substances react, intensify combustion or release toxic vapours? | Segregation plan, supplier advice, inspection records |
| Ignition control | Could heat, sparks, static, vehicles or electrical equipment ignite vapour? | Hazardous-area review, hot-work permits, equipment checks |
| Containment | Could a spill or firewater reach drains, exits or other stores? | Bund calculations, drainage plan, isolation procedure |
| Fire protection | Are detection, alarms, extinguishers and suppression suitable and available? | Service certificates, test logs, fire system design |
| Emergency response | Can workers evacuate and can responders obtain accurate information? | Emergency plan, drills, site maps, training records |
| Ongoing assurance | Will the controls remain effective after changes or incidents? | Action register, review dates, management-of-change records |
A well-run fire risk assessment turns chemical storage from a collection of individual hazards into a controlled system. It identifies what can burn, react or spread, then confirms that equipment, procedures and people are ready for the conditions that may occur in a real workplace.
For employers, supervisors and workers across Australia, practical capability matters as much as written documentation. Explore HCF CATCH training, facility tours and industry-focused learning opportunities to strengthen hazardous chemical awareness, emergency response and process safety skills in a realistic industrial setting.