Worker Killed When Fire Extinguisher Exploded During Recycling

Brief Summary

During routine processing of spent powder fire extinguishers a cartridge type unit exploded and fatally injured a worker. The investigation found the employer had not carried out a suitable and sufficient risk assessment and had unsafe systems for processing and storing old extinguishers. The case highlights the need for specific controls when discharging pressurised items and for verification of storage and restraint measures.

What Was The Incident?

At a waste management company site operatives were processing powder fire extinguishers that had reached the end of their serviceable life. While discharging a cartridge type extinguisher there was a sudden release of pressure and the unit exploded, striking a worker in the head and embedding the extinguisher in the ceiling of the workroom. The worker received emergency treatment but died the following day. The HSE found the employer had not produced a suitable and sufficient risk assessment, their systems of work for processing these extinguishers were not suitable, old extinguishers were not stored appropriately prior to processing, and there was no restraint or containment system to prevent dangerous parts being ejected during discharge.

What Was The Outcome?

The employer pleaded guilty to breaching Section 2(1) of the Health and Safety at Work etc. Act 1974. The company was fined £40,000 and ordered to pay £17,034.25 in costs.

Key Points To Consider

Risk assessment for pressurised items. Review and update risk assessments to cover the specific hazards of cartridge type and other pressurised extinguishers, including the potential for sudden pressure release and projectile parts, and record the rationale for chosen controls.

Safe systems for discharge and processing. Put written procedures and training in place for discharging extinguishers, use appropriate engineered containment and restraint systems to prevent ejected parts, and confirm staff competence and supervision before work starts.

Storage and handling controls. Verify storage arrangements for redundant extinguishers awaiting processing so they are segregated and secured, and use handling and containment measures that prevent movement or accidental discharge during storage and preparation.

HSE Prosecution Link