ISO 7243:2017 presents a screening method for evaluating the heat stress to which a person is exposed and for establishing the presence or absence of heat stress. It applies to the evaluation of the effect of heat on a person during his or her total exposure over the working day (up to 8 h). It does not apply for very short exposures to heat. It applies to the assessment of indoor and outdoor occupational environments as well as to other types of environment, and to male and female adults who are fit for work.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Method
5 Determination of WBGT
6 Determination of metabolic rate
7 Determination of effects of clothing
8 Timing and duration of measurements
8.1 Timing of measurements
8.2 Duration of measurements
9 Spatial and temporal variations
9.1 Measurement specifications relating to heterogeneity of environment (spatial variations)
9.2 Measurement specifications relating to time variations of WBGT index
9.3 Measurement specifications relating to time variations of metabolic rate
9.4 Measurement specifications relating to time variations of clothing
10 Interpretation
Annex A Reference values of the WBGT heat stress index (informative)
Annex B Measurement of parameters used in the WBGT index and specification of instruments (normative)
Annex C Alternative globe thermometers (informative)
Annex D Prediction of natural wet bulb temperature (informative)
Annex E Estimation of metabolic rate (informative)
Annex F Clothing adjustment values (CAVs) (informative)
ISO 13731:2001 Ergonomics of the thermal environment -- Vocabulary and symbols
ISO 7933:2004 Ergonomics of the thermal environment -- Analytical determination and interpretation of heat stress using calculation of the predicted heat strain
ISO 13731:2001 Ergonomics of the thermal environment -- Vocabulary and symbols
ISO 7933:2004 Ergonomics of the thermal environment -- Analytical determination and interpretation of heat stress using calculation of the predicted heat strain