EFFECTS OF INONIZING RADIATION CAUSED HEAT STRESS ON THE HUMAN BODY FOR STANDARD ISO 7243

2013 ◽  
pp. 47-57
Author(s):  
Van Trong Le ◽  
Thi Tuyet Mai Nguyen ◽  
Thi Xuan Duyen Nguyen ◽  
Ba Luan Nguyen ◽  
Tuyen Pham ◽  
...  
Keyword(s):  
Heat Stress ◽  
Risk Assessments ◽  
Management Systems ◽  
Temperature Index ◽  
Wet Bulb Globe Temperature ◽  
Simple Index ◽  
Simple Tool ◽  
Results Management ◽  
Globe Temperature ◽  
Hot Environments

Objectives: Presents heat stress Standard ISO 7243, which is based upon the wet bulb globe temperature index (WBGT), and considers its suitability for use worldwide. Materials and Methods: The WBGT index are considered and how it is used in ISO 7243 and across the world as a simple index for monitoring and assessing hot environments. Results: Management systems, involving risk assessments, that take account of context and culture, are required to ensure successful use of the standard and global applicability. For use outdoors, a WBGT equation that includes solar absorptivity is recommended. A ‘clothed WBGT’ is proposed to account for the effects of clothing. Conclusion: ISO 7243 is a simple tool to assess the heat stress and may be applicated worldwide.

scholarly journals Contribution of open-air concrete slabs to the heat stress on working mano

2018 ◽  
Author(s):  
Alex Augusto Marcelo ◽  
Lucila Chebel Labaki ◽  
Adriana Eloá Bento Amorim
Keyword(s):  
Heat Stress ◽  
Construction Industry ◽  
Sao Paulo ◽  
Concrete Slabs ◽  
São Paulo ◽  
Temperature Index ◽  
Wet Bulb Globe Temperature ◽  
Index Data ◽  
Globe Temperature ◽  
The City

The objective of this work was to evaluate the heat stress on workers of the construction industry on open-air concrete slabs in the city of Campinas, São Paulo, Brazil. Brazilian NR-15 provides a method for evaluating the heat stress to which a person is exposed using the WBGT (wet bulb globe temperature) index, prescribing rest pauses according to the type of activity. The methodology included measurements of environmental thermal variables and atmospheric quantities, followed by the calculation of the WBGT index. Data was collected at 12 different locations from August/2017 to March/2018, covering three diferent seasons. Results show that moderate and heavy activities on concrete slabs require pauses in every month, except in August.

scholarly journals Obravnava vročinskih valov in primer toplotne obremenitve delavcev v kmetijstvu v času vročinskih valov 2017

2018 ◽  
Vol 111 (3) ◽  
pp. 647
Author(s):  
Tjaša POGAČAR ◽  
Lučka KAJFEŽ BOGATAJ ◽  
Zalika ČREPINŠEK
Keyword(s):  
Heat Stress ◽  
Heat Waves ◽  
Labour Productivity ◽  
Temperature Threshold ◽  
Temperature Index ◽  
Wet Bulb Globe Temperature ◽  
Air Temperatures ◽  
Globe Temperature ◽  
High Level ◽  
Continental Climate

Workers in agriculture are regularly exposed to heat stress during summer, which can affect reduced labour productivity and income losses. Air temperatures in Slovenia have been rising in recent decades, and climate change projections show that this trend will continue along with an increase in the number of days with heat stress risk. Changes in the number of heat waves in central and south-western Slovenia for the period 1961–2017 were analysed as well as the risk of the heat stress for workers during heat waves in the year 2017. The heat wave occurs if the temperature threshold for the average daily temperature is reached or exceeded on at least three consecutive days, with the threshold for the mild continental climate (Ljubljana) 24 °C and the mild Submediterranean climate (Bilje) 25 °C. The WBGT (Wet Bulb Globe Temperature) index, assessing the risk of heat stress, was calculated from relative humidity and air temperatures. At both locations, the number of days in heat waves increased as well as their intensity, average daily air temperatures were significantly higher than in the first half of the considered period. The time span, in which the heat waves occur, also extended, as until 1990 they did not appear in early June and late August, as in recent years. The calculated values of the WBGT show that for most days in the heat waves in 2017 in Ljubljana and Bilje, the WBGT 23 °C threshold was exceeded practically all day, which shows a high level of heat stress risk for physically intense work. In the case of exceeded WBGT reference values, employers or farmers themselves should take actions to reduce the risk of heat stress.

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