Indices of heat stress a statistical comparison of effective temperature and an index based on sweat loss. by Frederick E Smith

Cover of: Indices of heat stress | Frederick E Smith

Published by H.M. Stationery Off in London .

Written in English

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Edition Notes

At head of title: Privy Council.

Book details

SeriesMedical research Council memorandum -- no. 29
ContributionsMedical Research Council (Great Britain), Great Britain. Privy Council.
The Physical Object
Pagination51 p. :
Number of Pages51
ID Numbers
Open LibraryOL20313443M

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Thousands of people continue to die from heat. Heat illnesses and advice for preventing heat casualties at work, during heatwaves, sport and the effects of global warming are described.

A new perspective on thermoregulation integrates physiological and psychophysical regulated variables. Heat stress indices, the WBGT and the SWreq are presented. An association of health and safety professionals devoted to protecting the health of the American worker and the environment.

It supports the industrial hygiene profession in the anticipation, recognition, evaluation, and control of job-site hazards that may result in injury, illness, to workers. Numerous heat stress indices have been proposed based on physical factors of the environment, physiological strain, thermal comfort assessment, and rational heat balance.

A review of these can be found in Beshir and Ramsey (). Rational evaluations of heat stress requires calculating the heat balance from E req = M + R + C. Of all of the heat stress indices, the wet-bulb globe temperature (WBGT) index is the most widely accepted and used throughout the world (Yaglou and Minard, ; Parsons, ; NIOSH, ; ISO; ACGIH, ).

It is a simple direct index based upon the weighted average of temperatures. The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, to posit a human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade.

The result is also known as the "felt air temperature", "apparent temperature", "real feel" or "feels like".For example, when the temperature is 32 °C. Threshold Limit Values for Physical Agents • Heat Stress and Strain.

Visible and Near Infrared Radiation Thermal Effects Hazard Function. Overestimated Risk • The risk of thermal effects between and nm was higher than necessary. Note: TLVs® and BEIs® Book rounds.

The American Conference of Governmental Industrial Hygienists (ACGIH®) has released its editions of the TLVs® and BEIs® book and the Guide to Occupational Exposure Values. The information in the user-friendly, pocket-sized TLVs® and BEIs® book is used worldwide as a guide for evaluation and control of workplace exposures to chemical.

Fanger's PMV is an index of stress and of temperature sensation as its isotherms would parallel E sk and T sk in Fig. 2, for example. In Summary: (1) Physical Indices of Heat Stress are T o, P a and their linear combinations with negative slopes of 5–10 Torr/K on a psychrometric Chart, while within the zone of evaporative regulation (ET Cited by: 1.

In mature plants, PttEXPA8 exerted the greatest effect on heat stress, with a response index value of %, followed by drought, cadmium, cold. Heat stress can result in heat stroke, heat exhaustion, heat cramps, or heat rashes.

Heat can also increase the risk of injuries in workers as it may result in sweaty palms, fogged-up safety glasses, and dizziness. Burns may also occur as a result of accidental contact with hot surfaces or steam.

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