![header thumbnail](/images/img-default-logo.png)
EN ISO 7933:2004
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
![header thumbnail](/images/img-default-logo.png)
Ergonomics of the thermal environment - Analytical determination and interpretation of heat stress using calculation of the predicted heat strain (ISO 7933:2004)
28-02-2005
15-08-2004
Foreword
Introduction
1 Scope
2 Normative references
3 Symbols
4 Principles of the method of evaluation
5 Main steps of the calculation
5.1 General heat balance equation
5.2 Calculation of the required evaporative heat flow,
the required skin wettedness and the required sweat
rate
6 Interpretation of required sweat rate
6.1 Basis of the method of interpretation
6.2 Analysis of the work situation
6.3 Determination of maximum allowable exposure time
(D[lim])
6.4 Organization of work in the heat
Annex A (normative) Data necessary for the computation of
thermal balance
Annex B (informative) Criteria for estimating acceptable
exposure time in a hot work environment
Annex C (informative) Metabolic rate
Annex D (informative) Clothing thermal characteristics
Annex E (informative) Computer programme for the computation
of the Predicted Heat Strain Model
Annex F (normative) Examples of the Predicted Heat Strain
Model computations
Bibliography
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.