DD ENV ISO 11079:1999

National Foreword
1. Scope
2. Normative references
3. Symbols and abbreviations
4. Principles of methods for evaluation
5. General cooling
    5.1 Definition of required insulations, IREQ
    5.2 Calculating of factors affecting IREQ
    5.3 Calculation of IREQ
    5.4 Interpretation of IREQ
    5.5 Definition and calculation of duration limited
         exposure, DLE
6. Local cooling
    6.1 Indoor conditions
    6.2 Outdoor conditions
7. Practical assessment of cold environments
    7.1 Procedure for the determination of IREQ
Annexes
A Heat exchange equations
    A.1 Determination of respiratory heat exchange
    A.2 Determination of evaporative heat exchange
    A.3 Determination of evaporative resistance
    A.4 Determination of the clothing area factor
    A.5 Determination of convective heat transfer
         coefficient
    A.6 Determination of relative air velocity
    A.7 Determination of radiation heat transfer
         coefficient
B Physiological criteria in cold exposure
    B.1 Local cooling
    B.2 Duration limited exposure
C Thermal insulation of clothing
    C.1 Basic and resultant insulation
    C.2 Moisture absorption
    C.3 Individual behaviour and clothing requirements
D Values for calculating the wind chill index
E Examples of evaluation
    E.1 Continuous exposure
    E.2 Intermittent exposure
    E.3 Duration limited exposure
F Computer program for calculating IREQ, DEL, RT and WCI
G Bibliography

Gives methods and strategies for assessing the thermal stress that is associated with exposure to cold environments. Applicable to continuous, intermittent and occasional exposure and in both indoor and outdoor work. Not covered in this, are specific effects associated with certain metereological phenomena (e.g. precipitation) and should be assessed by other methods.