<P> DSEAR (The Dangerous Substances and Explosive Atmospheres Regulations of 2002) is the United Kingdom's implementation of the European Union - wide ATEX directive . </P> <P> The intention of the Regulation is to reduce the risk of a fatality or serious injury resulting from a "dangerous substance" igniting and potentially exploding . Examples of a "dangerous substance" as defined by DSEAR include sawdust, ethanol vapours, and hydrogen gas . The regulation is enforceable by the HSE or local authorities . </P>

Dangerous substances and explosive atmospheres regulations (dsear)