Limited space means closed or semi-closed and relatively isolated from the outside world.

Limited space refers to closed or semi-closed, relatively isolated from the outside world as follows:

Limited space refers to a space that is closed or partially closed, relatively isolated from the outside world, with narrow entrances and exits, operators can't work for a long time, and natural ventilation is poor, which is easy to cause the accumulation of toxic, harmful, flammable and explosive substances or insufficient oxygen content. A dangerous feature of confined space operation is the complex working environment.

Limited space is narrow, poor ventilation is not conducive to gas diffusion, and toxic and harmful gases are easy to accumulate; Poor lighting and communication conditions bring difficulties to normal operation and emergency rescue. Second, it is dangerous. Once an accident happens, it will often cause serious consequences. Poisoning and suffocation of workers often occur in an instant, and some toxic gases can kill people in a few minutes or even seconds after poisoning.

Legal basis:

The State Administration of Work Safety issued five regulations on safe operation in limited space.

First, the operation approval system must be strictly implemented, and it is strictly forbidden to enter the limited space without authorization.

Article 2: "Ventilation first, then inspection, then operation" must be achieved, and ventilation and unqualified operation are strictly prohibited.

Article 3. Personal protective equipment such as poisoning prevention and suffocation must be provided, and safety warning signs should be set up. Operation without protective monitoring measures is strictly prohibited.

Article 4. Operators must be trained in safety, and those who have not passed the education and training are strictly forbidden to work at their posts.

Fifth, emergency measures must be formulated and emergency equipment must be equipped on site. Blind rescue is strictly prohibited. Third, blind rescue is easy to cause casualties. According to statistics, 50% of the people who died in confined space accidents were rescuers. Due to improper rescue, casualties increased.