WCRA put out alert on DPF systems

Since the introduction of stricter standards, heavy vehicles have been able to utilise chassis-mounted exhaust systems due to cleaner emissions. Part of that system is a Diesel Particulate Filter (DPF).

It has been reported by Waste Contractors and Recyclers Association members that extreme fire risks arise when heavy vehicles fitted with a Diesel Particulate Filter (DPF) system start the burn-off while at a receival depot or disposal site.

The DPF process takes the exhaust and runs it through a muffler that is fitted with a filter which captures the carbon as it passes through. When the filter gets full it sets off a sensor that initiates the ECU to start the burn-off by injecting the muffler with fuel and burns the carbon off (up to 250 degrees C).

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Depending on the brand of heavy vehicle, a switch may be used to activate or delay the burn-off process.

According to the WCRA, all heavy vehicle operators must:

  • • be fully trained in the correct usage of their vehicle and any additional safety equipment fitted.
  • • not enter a receival depot or disposal site when the DPF burn-off process is due.
  • • complete the DPF burn-off process in a safe location before entering a receival depot or disposal site.
  • if fitted, engage the switch to delay the DPF burn-off process while on site.