|Diesel Issue Resolution Team
Part 36 safety system exhaust gas temperature shutdown sensor reliability-|
Permissible machines with either wet exhaust gas conditioners or dry exhaust gas conditioners and DPM exhaust filters are required to have exhaust gas temperature sensors that meet the requirements of §7.98(s)(4)(i) (185°F maximum exhaust gas temperature) and §7.98(s)(4)(ii) (302°F maximum exhaust gas temperature), respectively. Permissible machines are currently approved with adjustable exhaust gas temperature sensors activated by a wax element. Recently, Mac's Mining Repair of Huntington, Utah proposed the use of a specific sprinkler head as a replacement for the wax element exhaust gas temperature sensors. This new sprinkler head type shutdown sensor may improve safety system reliability.