Sampling in Mines And/or in Explosive Atmospheres.
Air Sampl Instru for Eval of Atmos Contam Am Conf of Govt Ind Hyg 4th Ed PP D-1 to D-2 :D-1toD-2
Environmental sampling in areas where flammable materials are present necessitates the use of intrinsically safe or explosion- proof electrically operated devices. The designation of the classification of the hazard, the provisions for operation, and the agencies responsible for approving the equipment are described.
Air Sampl Instru for Eval of Atmos Contam., Am. Conf. of Govt Ind Hyg, 4th Ed., PP. D-1 to D-2