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BS EN ISO 7243:2017

$142.49

Ergonomics of the thermal environment. Assessment of heat stress using the WBGT (wet bulb globe temperature) index

Published By Publication Date Number of Pages
BSI 2017 26
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This document 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.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Method
10 5 Determination of WBGT
6 Determination of metabolic rate
7 Determination of effects of clothing
11 8 Timing and duration of measurements
8.1 Timing of measurements
8.2 Duration of measurements
12 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
13 10 Interpretation
14 Annex A (informative) Reference values of the WBGT heat stress index
16 Annex B (normative) Measurement of parameters used in the WBGT index and specification of instruments
18 Annex C (informative) Alternative globe thermometers
20 Annex D (informative) Prediction of natural wet bulb temperature
22 Annex E (informative) Estimation of metabolic rate
23 Annex F (informative) Clothing adjustment values (CAVs)
24 Bibliography
BS EN ISO 7243:2017
$142.49