How to avoid fires on logging machines.
The Association of Equipment Manufacturers (AEM) gives us advice on how to reduce and prevent the number of fires occurring on forestry machines. Insurers have noted increased losses due to fires during the recent economic downturn. They indicate that machines owners have increased their machine utilisation rates resulting in more machine hours being used in a shorter period of time. This results in aging equipment with more fluid leaks and worn electrical systems, resulting in more fires. Here are the five top causes of fire as identified by the AEM, as well as tips on how to avoid them:
- Debris in the engine compartment. Dry leaves, needles, branches, sawdust, and twigs can build up on equipment, particularly in the engine compartment. This material is highly combustible and should be removed frequently. Even clearing out debris once a day or before a shift may not be sufficient. Debris build up should be checked whenever the operator takes a break.
- Hotter-running Tier 4 engines. The new emission standard engines run hotter than before. Debris build-up around these hot engines can be particularly problematic and should be cleared out.
- Debris ignited by rotating components. Rotating components such as drive shafts can rub on debris caught against these moving parts until it ignites. Debris should be removed from around these parts.
- Altered electrical systems. Inadequate modifications to electrical systems often result in shorts, overloading and fires. Unauthorized electrical components should never be added to machines. Power outlets provided by the manufacturer should be used.
- Ultra-low sulphur diesel (ULSD) ignition hazard. Refuelling using ULSD has its risks, as it has a greater static ignition hazard than diesel with higher sulphur content. Proper bonding and grounding of the complete fuel delivery system is important during refuelling. A simple wire connection between two machines will create a bonding connection.
The technical note was compiled by Nate Burton, the Technical & Safety Services Manager for the Association of Equipment Manufacturers (AEM). It can be accessed at http://loggingsafety.com/content/top-five-causes-forestry-equipment-fires%E2%80%94and-avoiding-them