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  • BSI
    BS EN ISO 7933:2004 Ergonomics of the thermal environment. Analytical determination and interpretation of heat stress using calculation of the predicted heat strain
    Edition: 2005
    $486.85
    / user per year

Description of BS EN ISO 7933:2004 2005

This International Standard specifies a method for the analytical evaluation and interpretation of the thermal stress experienced by a subject in a hot environment. It describes a method for predicting the sweat rate and the internal core temperature that the human body will develop in response to the working conditions.

The various terms used in this prediction model, and in particular in the heat balance, show the influence of the different physical parameters of the environment on the thermal stress experienced by the subject. In this way, this International Standard makes it possible to determine which parameter or group of parameters should be modified, and to what extent, in order to reduce the risk of physiological strains.

The main objectives of this International Standard are the following:

  1. the evaluation of the thermal stress in conditions likely to lead to excessive core temperature increase or water loss for the standard subject;

  2. the determination of exposure times with which the physiological strain is acceptable (no physical damage is to be expected). In the context of this prediction mode, these exposure times are called “maximum allowable exposure times”.

This International Standard does not predict the physiological response of individual subjects, but only considers standard subjects in good health and fit for the work they perform. It is therefore intended to be used by ergonomists, industrial hygienists, etc., to evaluate working conditions.



Standard NumberBS EN ISO 7933:2004
TitleErgonomics of the thermal environment. Analytical determination and interpretation of heat stress using calculation of the predicted heat strain
StatusWithdrawn
Publication Date2005-01-26
Withdrawn Date2023-08-07
ReplacesBS EN 12515:1997
Identical National Standard OfISO 7933:2004, EN ISO 7933:2004
DescriptorsSweat, Acclimatization, Working conditions (physical), Human body, Thermal stress, Heat, Mathematical calculations, Evaporation, Ergonomics, Environment (working), Climate, Formulae (mathematics)
ICS13.180 Ergonomics
CommitteePH/9
ISBN0 580 45323 5
PublisherBSI
Pages46



About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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