Safety warning after four Queensland workers injured in an explosion

Safety Warning After Four Queensland Workers Injured in an Explosion

Workplace Health and Safety Queensland has issued a safety warning after four workers were injured in an explosion in November 2021. Early enquiries indicate that the incident happened when an "extractor" exploded. This is a machine used to extract rosin and turpentine from pine wood chips.

An investigation into the cause of this incident remains underway.

What Caused the Explosion?

Details surrounding the exact trigger have not yet been confirmed, though authorities suspect an ignition source within a hazardous area may have contributed to the blast. Similar incidents, such as the one covered in our article on a switchboard explosion that injured an electrical worker, highlight recurring patterns across Queensland worksites.

Managing Ignition Sources in Hazardous Areas

Following the incident, Workplace Health and Safety Queensland said persons conducting a business or undertaking must, if there's a possibility of fire or explosion in a hazardous area being caused by an ignition source being introduced into the space, ensure that source stays out of the area (from outside or within).

WHSQ added that potential ignition sources in a hazardous area can be controlled by ensuring later changes to operation or design of equipment associated with a hazardous zone are managed through suitable processes. Such processes should re-assess hazardous area classification and zones whenever modifications occur.

Electrical Work Requirements in Hazardous Areas

A person conducting a business or undertaking must also ensure only licensed electrical workers who are competent to install, service and maintain electrical equipment associated with hazardous areas get engaged for such tasks.

Electrical competency requirements exist because faulty or poorly maintained electrical equipment can itself become an ignition source in a hazardous environment. Businesses handling flammable materials, wood dust, or volatile chemicals face elevated risk when electrical systems aren't properly assessed or maintained by qualified professionals.

Reducing Risk in Hazardous Work Environments

Employers seeking to reduce risk exposure in hazardous areas should consider:

• Engaging licensed electrical workers for all installation, servicing, and maintenance tasks involving electrical equipment in hazardous zones
• Reassessing hazardous area classifications whenever equipment, operations, or facility layouts change
• Implementing robust workplace health and safety management systems that address ignition source control
• Training staff to recognise potential hazards linked to extraction machinery and similar equipment
• Reviewing incident history, including cases like the chemical blast that caused burn injuries to a Queensland worker, to strengthen prevention strategies

These measures support broader workplace health objectives while helping businesses meet their legal obligations under Queensland's work health and safety framework.

Why This Safety Alert Matters

Incidents involving extraction equipment, hazardous area breaches, and electrical faults continue to affect Queensland industries. Comparable cases, such as a worker crushed by a hay bale on a Queensland property, demonstrate why regulators consistently push for stronger risk controls across diverse sectors.

Health and safety professionals in construction, manufacturing, and processing industries should treat this warning as a reminder to audit hazardous area classifications and electrical maintenance schedules regularly.

Strengthening Business Compliance

Every business operating equipment near flammable dust, gases, or volatile substances carries responsibility for identifying hazardous zones correctly. Robust Electrical Safety Policy documentation, paired with routine inspections using an Electrical Safety Checklist, gives organisations a structured approach toward compliance.

Clear Workplace Safety Rules also help staff understand expectations around hazardous equipment operation, reducing the likelihood of preventable incidents.

Read the Full Safety Alert

Read the full safety alert on the Workplace Health and Safety Queensland website for further detail regarding the investigation and regulatory guidance.

For organisations wanting to strengthen their documentation and compliance processes, SafetyDocs offers Safety Software solutions designed to support health and safety management across hazardous work environments. Visit our support page for further assistance with safety templates and compliance tools.