Ergonomics of the thermal environment. Determination and interpretation of cold stress when using required clothing insulation (IREQ) and local cooling effects (ISO 11079:2007)
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ISO 11079:2007specifies methods and strategies for assessing the thermal stress associated with exposure to cold environments. These methods apply to continuous, intermittent as well as occasional exposure and type of work, indoors and outdoors. They are not applicable to specific effects associated with certain meteorological phenomena (e.g. precipitation), which are assessed by other methods.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Principles of methods for evaluation
5 General cooling
5.1 Overview
5.2 Definition of required clothing insulation, IREQ
5.3 Derivation of IREQ
5.4 Calculation of IREQ
5.5 Interpretation of IREQ
5.6 Comparison of IREQ and selected clothing insulation
5.7 Definition and calculation of duration limited exposure, Dlim
6 Local cooling
6.1 General
6.2 Convective cooling
6.3 Conductive cooling
6.4 Extremity cooling
6.5 Airway cooling
7 Practical assessment of cold environments and interpretation
7.1 General
7.2 Procedure for determination of IREQ and Dlim
7.3 Local cooling
Annex A Computation of thermal balance (normative)
Annex B Physiological criteria in cold exposure (informative)
Annex C Metabolic rate and thermal properties of clothing (informative)
Annex D Determination of wind cooling (informative)
Annex E Examples of evaluation of IREQ (informative)
Annex F Computer program for calculating IREQ (informative)
EN 511:2006 Protective gloves against cold
ISO 13731:2001 Ergonomics of the thermal environment -- Vocabulary and symbols
ISO 13732-3:2005 Ergonomics of the thermal environment -- Methods for the assessment of human responses to contact with surfaces -- Part 3: Cold surfaces
EN 511:2006 Protective gloves against cold
ISO 13731:2001 Ergonomics of the thermal environment -- Vocabulary and symbols
ISO 13732-3:2005 Ergonomics of the thermal environment -- Methods for the assessment of human responses to contact with surfaces -- Part 3: Cold surfaces
ISO 15831:2004 Clothing -- Physiological effects -- Measurement of thermal insulation by means of a thermal manikin
ISO 7726:1998 Ergonomics of the thermal environment -- Instruments for measuring physical quantities
ISO 8996:2004 Ergonomics of the thermal environment -- Determination of metabolic rate
ISO 9237:1995 Textiles -- Determination of the permeability of fabrics to air
ISO 9920:2007 Ergonomics of the thermal environment -- Estimation of thermal insulation and water vapour resistance of a clothing ensemble