One of our regular clients is panicking. Their insurers are threatening to greatly increase their premiums unless they can demonstrate they have carried out a DSEAR risk assessment for their powder coat spray booth and associated curing oven.
Ever since the tragedy in a paint spray shop in Norwich in 2015 where two workers sadly lost their lives, have the insurers been even more nervous about the explosion risk from the fine, combustible, airborne plastic based powder as well as the more common solvent evaporation from paint spray aerosols.
When visiting sites, it can be difficult to convince the workforce operating the equipment that they could be capable of triggering an explosive localised cloud with static discharge from their own movements. However, the use of fine powders and high temperatures introduces potential fire and explosion hazards that fall under the Dangerous Substances and Explosive Atmospheres Regulations (DSEAR).
Understanding the Risks
Powder coating powders are typically organic polymers, which, when dispersed in air, can form explosive dust clouds. Inside a spray booth, these airborne particles can ignite if exposed to sparks, hot surfaces, or static discharge. Similarly, a curing oven operates at elevated temperatures that could become an ignition source if residual powder accumulates or ventilation fails.
The Role of a DSEAR Assessment
A DSEAR risk assessment identifies where explosive atmospheres could form, evaluates potential ignition sources, and ensures adequate controls are in place. This may include:
- Effective ventilation and dust extraction systems
- Grounding and bonding to prevent static build-up
- Regular cleaning to prevent powder accumulation
- Explosion relief and containment measures where necessary
- Safe operating procedures and staff training
By conducting a DSEAR assessment, employers demonstrate compliance with UK safety law, protect their workforce, and minimise downtime from fire or explosion incidents. More importantly, it ensures that the spray booth and curing oven operate safely, efficiently, and within the bounds of best practice. Sustainable Solutions ESHB, based in Derbyshire, are central to the whole of the UK. Message us now and we can chat about the best way to provide the necessary protection.
