What is high temperature operation?

The temperature, humidity, wind speed, thermal radiation and air pressure of the air in the production environment constitute the meteorological conditions of the production environment. High temperature is a bad weather condition. High temperature operation refers to the operation with productive heat source in the workplace. When the outdoor temperature reaches the calculated temperature of summer ventilation design in this area, the workplace temperature is more than 2 degrees Celsius higher than the outdoor temperature.

According to the characteristics of meteorological conditions, high temperature operation can be divided into:

(2) High temperature and strong thermal radiation operation: that is, there is strong thermal radiation, high temperature and low humidity in the working environment. Most high-temperature operations belong to this type, such as ironmaking and coking in metallurgical industry; Steelmaking operations; Rolling, casting and heat treatment in machinery industry; Calendering operation; Glass manufacturing and ceramic firing in light industry. In addition, brick burning, thermal power generation, infrastructure, loading and unloading, field work, marching and other summer open-air operations all belong to high temperature and strong thermal radiation operations.

(1) High temperature and high humidity operation: that is, in the working environment, the humidity and temperature are high, but the thermal radiation is not strong. Such as laundry, printing and dyeing, papermaking, textile, electroplating, pickling, slaughtering and other operations, although there is no strong thermal radiation, a large amount of hot steam is released in the production process, which, together with solar radiation, mechanical rotation heating and human body heat dissipation, can form a higher working environment temperature and humidity. In addition, in deep coal mine, it is also a kind of high humidity and high temperature operation because of the heat generated by coal seam, the compression heat of air and the evaporation of water.