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11112. <br /> S <br /> i <br /> MI I.M . <br /> a <br /> OPERATIJ1a PROCEDURES ;tO. ES-102 <br /> 102.0 HEAT STRESS <br /> 102.1 PURPOSE <br /> { <br /> The purpose of this OP is to provide general information <br /> on heat stress and the methods that can be utilized to prevent or <br /> 9 <br /> minimize the occurrence of heat stress. <br /> I y <br /> hdverse climatic conditions are important considerations <br /> Fre in planning and conducting site operations. Ambient temperature <br /> effects can include physical discomfort, reduced efficiency, <br /> persona]. injury, and increased accident probability. Heat stress <br /> .s of particular con:arnwhile wearing impermeable protective <br /> ganients, since these garments inhibit evaporative body cooling. <br /> 102.2 REQUIREMENTS <br /> The NIOSH criteria doculTent for heat stress recommends <br /> that environmental 'oonitori.ng and other preventive 10easL,res be <br /> r <br /> adopted in hot work environments.'."However, the provisions are not <br /> directly applicable to employees who are required to wear <br /> impermeable protective clothing. The reason for this exception is <br /> that impermeable clothing prevents the evaporation of sweat, which <br /> is one of the most important cooling mechanisms of the body, There <br /> is no recognized health ,standard protection for workers weaning <br /> impermeable protective clothing and respirators in hot <br /> environments. <br /> The ACGIH has adopted a TLV for heat stress. These <br /> guides relate to work/rest regimes. <br /> 0797.6/72 HS-202-1 November 1990 <br />