Reciprocating internal combustion engines - Safety requirements for design and construction of engines for use in potentially explosive atmospheres - Part 2: Group I engines for use in underground workings susceptible to firedamp and/or combustible dust

This document establishes essential safety requirements for the design and manufacturing of reciprocating internal combustion engines intended for use in potentially explosive atmospheres, specifically targeting underground operations involving combustible dusts and/or ignitable mixtures. Focusing on Class I equipment, the standard outlines critical technical specifications to prevent ignition sources that could trigger explosions in hazardous environments. It provides detailed guidelines covering engine construction, ventilation, electrical safety components, and surface temperature limitations to ensure safe operation in mining and similar underground settings where dust accumulation is a primary risk. The text specifies testing methodologies and performance criteria necessary to verify compliance with safety principles. It aims to protect personnel, infrastructure, and equipment by minimizing the probability of ignition within engines operating in areas classified for dust hazards. By adhering to these technical parameters, manufacturers can produce engines that meet rigorous safety standards designed for challenging underground conditions where explosive dust clouds may be present.