Chalwyn

Chalwyn supply a range of diesel engine safety products for equipment and vehicles operating at refineries, gas terminals and oil storage sites, providing an essential control measure for the catastrophic consequences that can result from engine runaway When a Diesel engine is exposed to an external fuel source such as an airborne combustible hydrocarbon in the surrounding environment, it naturally ingests the mixture into the air intake system. Since diesel engines control fuel and not air, the engine can no longer maintain speed control A Diesel engine can become an ignition source if a ‘runaway’ or over speed occurs. This can happen at less than 4% concentration of flammable gas. The engine must be prevented from an uncontrolled runaway by fitting a shut off valve. This prevents over speed by stopping the engine at a pre-set rpm. New Technology - European emission standards for diesel engines have gradually become more stringent. Since 1996 the standards have systematically reduced levels of particulate matter and nitrous oxides. Tier 4 final engine are now starting to appear in the market equipped with sophisticated exhaust after treatment components and electronic controls dedicated to reducing emissions. Chalwyn have developed a range of air intake shut down systems that are compatible with the latest engine technology. The new generation of engines forces a necessary move away from traditional D valves to a modern, low restriction electric valve solution. Oil and gas sites are now requesting a fully automated system that can easily be demonstrated and tested