I.S. EN ISO 7933:2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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ERGONOMICS OF THE THERMAL ENVIRONMENT - ANALYTICAL DETERMINATION AND INTERPRETATION OF HEAT STRESS USING CALCULATION OF THE PREDICTED HEAT STRAIN
Hardcopy , PDF
03-08-2023
English
01-01-2004
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
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
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