UKMHA: LPG Safety Alert

December 20, 2023

UKMHA Releases LPG Safety Alert **UPDATED**

The UK Material Handling Association has recently updated its Safety Alert addressing LPG fuel issues.

This Safety Alert was issued following reports of users of LPG powered trucks experiencing issues with the start-up process. David Goss, UKMHA Technical Director, explained,:“Investigations into the root cause are ongoing, but instances where a build-up of deposits in the evaporator , flow regulator and shut-off valve have been identified.

“The concern is that sticking valves could lead to a mixture which is too rich and therefore, cannot be ignited. If there are then repeated starting attempts, this can lead to a release of a high unburned concentration of LPG which, in extreme cases, could present a risk of fire. This is because LPG is heavier than air, so it will accumulate in low lying areas where it can easily be ignited by an ignition source, such as sparks, electrical arc or a hot surface.”

UKMHA understands that LPG fuel containing contamination not present historically is still being placed on the UK market and that the fuel standard BS 4250 does not provide adequate controls for this contamination. There is an ongoing HSE investigation and the problem continues to pose a risk to all LPG fuelled trucks, irrespective of manufacturer. The Safety Alert gives advice for operators on what to do, and what not to do, if experiencing difficulty starting an LPG truck engine. It also offers expanded guidance to service and maintenance engineers in how to safely deal with an LPG truck which has a reported starting issue.

All the Safety Alerts are published on the UKMHA website and have been created by the UKMHA Health & Safety Group to highlight hazards and safe working practices for technicians working on material handling equipment. They are freely available to members and non-members alike.

View the revised safety alert here.