abstract introduction: heat stress risk assessment, as a harmful agent at workplace, is essential for controlling heat strain and heat stress effectively. this study is concerned with the relationship between physiological strain index (psi) and wet bulb globe temperature index (wbgt) in women in the climate chamber . methods: this experimental study was carried out on 36 healthy females in sit...

background : necessity of evaluating heat stress in the workplace, require validation of indices and selection optimal index. the present study aimed to assess the precision and validity of some heat stress indices and select the optimum index for using in heavy work activities in hot and dry climates. methods: it carried out on 184 workers from 40 brick kilns workshops in the city of qom, cent...

original article   the objectives of this research were to study the correlations of heat strain score index (hssi) and values of wet-bulb globe temperature (wbgt) index with physiological parameters such as core body temperature, heart rate, and blood pressure of workers exposed to heat stress in a glass manufacturing plant in order to determine the reliability of hssi. this cross sectional st...

in order to investigate the combined effects of shift work and heat stress on the physiological parameters, such as heart rate (hr) and body temperature (bt), a hot-dry working environment was investigated for 53 workers in foundry workshops. in this study wet bulb globe temperature index (wbgt) was measured and along with that simultaneously heart rate and oral temperature were checked in 3 sh...

Background:Thermal stress may have numerous harmful effects on human health. This study aimed at investigating thermal stress in the city of Kerman, Iran. Methods:In this descriptive-analytical study, thermal stress was assessed from 6 AM to 9 PM in 2016 using four thermal stress indices including wet-bulb globe temperature (WBGT), environmental stress index (...

BACKGROUND The purpose of this study was to determine the level of heat stress to construction workers using Thermal Work Limit (TWL) and Wet Bulb Globe Temperature (WBGT) indices and by measuring Urine Specific Gravity (USG) among construction workers in Iran and comparing the appropriateness of these indices for measuring heat stress in Iran climate. METHODS This comparative and experimenta...

OBJECTIVES The objective of this study has been to evaluate the occupational heat exposure of 12 workers at 5 plants in a subtropical country. MATERIAL AND METHODS The heat stresses and strain on workers in 5 plants were assessed by the International Organization for Standardization (ISO) 7243 index (wet bulb globe temperature - WBGT) and the ISO 7933 index (maximum allowable exposure time - ...

Existing methods for estimating heat stress, enshrined in British/International Standards (the Wet Bulb Globe Temperature (WBGT) index [BS EN 27243] and the Required Sweat Rate equation [BS EN 12515; ISO 7933 modi®ed]), assume that the clothing worn by the individual is water vapour permeable; the WBGT index also assumes that the clothing is relatively light. Because most forms of personal prot...