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MAP20071017249Malchaire, Jacques B.The TLV work-rest regimens for occupational exposure to heat : a review of their development / J.B. MalchaireSumario: A comparison is made between two different approaches for specifying maximum allowable exposure time to heat stress conditions. A rational derivation is given for wet bulb globe thermometer limits for different work-rest regimens that are in close agreement with the ACGIH TLV recommendations. The significance of these limits is discussed. A simpler version of the heat stress index is presented and the advantages of the two methods are comparedEn: The Annals of occupational hygiene. - Oxford [etc.]. - nº 1, 1979 ; p. 55-621. Higiene industrial. 2. Contaminantes físicos. 3. Calor. 4. Estrés térmico. 5. Temperatura. 6. Valores TLV. 7. Termometría. I. Title. II. Título: The Annals of occupational hygiene.