High temperature operation means that the temperature is above () C.

High temperature operation refers to the operation under abnormal operating conditions with high temperature, strong thermal radiation, high air humidity (relative humidity ≥80%RH) and wet bulb temperature index (WBGT index) exceeding the specified limit.

High temperature weather refers to the weather where the daily maximum temperature is above 35℃ released to the public by the meteorological offices and stations affiliated to the competent meteorological departments at or above the prefecture level. Hot weather operation refers to the operation that the employer arranges workers to carry out in a high-temperature natural climate environment in hot weather. High temperature operation in the workplace refers to the operation in which the average WBGT index in the workplace is ≥25℃ in the process of production and labor.

Common types of high temperature operation

I. High temperature and strong thermal radiation operation

1, coking, ironmaking and steelmaking workshops in metallurgical industry.

2. Foundry workshop of machinery manufacturing industry.

3, ceramics, glass, building materials industry kiln workshop.

4. Power plant (thermal power station) and boiler room of gas plant.

Second, high temperature and high humidity operation

1, textile printing and dyeing factory.

2. Deep well.

Third, open-air operation in summer.

Construction sites, large-scale sports competitions, etc.