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ISO DIS 7933

Ergonomics of the thermal environment - Analytical determination and interpretation of heat stress using the predicted heat strain model

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Organization: ISO
Publication Date: 13 April 2018
Status: active
Page Count: 38
ICS Code (Ergonomics): 13.180
scope:

The main objective of this International Standard is to describe a mathematical model (the predicted heat strain model) for the analytical determination and interpretation of the thermal stress (in terms of water loss and core temperature) experienced by a subject in a hot environment and to determine the "maximum allowable exposure times", with which the physiological strain is acceptable for 95% of the exposed population. (the maximum tolerable core temperature and the maximum tolerable water loss are not exceeded by 95% of the exposed people).

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 can be changed, and to what extent, in order to reduce the risk of physiological strains.

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. Recommendations about how and when to use this model are given in ISO 15265, Ergonomics of the thermal environment -- Risk assessment strategy for the prevention of stress or discomfort in thermal working conditions

Document History

ISO DIS 7933
April 13, 2018
Ergonomics of the thermal environment - Analytical determination and interpretation of heat stress using the predicted heat strain model
The main objective of this International Standard is to describe a mathematical model (the predicted heat strain model) for the analytical determination and interpretation of the thermal stress (in...
August 15, 2004
Ergonomics of the thermal environment Analytical determination and interpretation of heat stress using calculation of the predicted heat strain
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...
July 15, 1989
Hot Environments - Analytical Determination and Interpretation of Thermal Stress Using Calculation of Required Sweat Rate
A description is not available for this item.

References

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