Special precautions are required when working in enclosed Spaces!

Special precautions are required when working in enclosed Spaces! Note: Enclosed space is a relatively narrow or confined space, such as a box, boiler, vessel, cabin, etc. “Closed” means poor ventilation due to structure, size, shape. Ventilation in enclosed Spaces In addition TO NORMAL ventilation requirements, ventilation in enclosed Spaces is required to prevent the accumulation of combustible mixtures and oxygen enrichment in the atmosphere. 1. Entry of personnel is prohibited before good ventilation is carried out in the enclosed space. To enter, one must wear a suitable air-breathing device and be supervised by someone wearing a similar device. If necessary, the enclosed space should be tested for toxic gas, combustible gas, harmful gas, oxygen and so on before entering, and can be entered after confirming that it is harmless. 2, the adjacent personnel, the appropriate ventilation in the enclosed space must not only ensure the safety of the welder or cutter, but also ensure the safety of all personnel in the area. 3. The quantity and quality of the air used and the air used for ventilation must ensure that the concentration of harmful substances in the closed space is lower than the specified value. The compressed air supplied to the respirator or breathing apparatus must meet normal breathing requirements. The compressed air pipe of the breathing apparatus must be a special pipeline and shall not be connected with other pipelines. Oxygen, gases or mixtures other than air shall not be used for ventilation. When welding, cutting or related process work is carried out in areas where there is a direct hazard to life and health, forced ventilation, air-supplied breathing equipment or other suitable means must be used. Placement of using equipment 1. Gas cylinders and welding power supply must be placed outside the enclosed space when welding and cutting are carried out in the enclosed space. 2, ventilation pipe, used for welding, cutting or related process of local exhaust ventilation pipe must be made of non-combustible material. These pipes must be inspected regularly as needed to ensure that they are functionally stable and that there is no flammable residue on their inner surfaces. 3, adjacent areas, in the closed space adjacent to the implementation of welding or cutting and the existence of danger in the closed space, must make people know the dangerous consequences in the closed space, in the lack of necessary protective measures under the condition of strictly prohibited to enter such a closed space. 4. Emergency signal. When the operator enters the enclosed space through a manhole or other opening, it must have the means to provide rescue signal to the external personnel. 5. The guardian personnel in the closed space must be set up outside the closed space when working in the closed space, such as the presence of gas that seriously endangers life safety. The guardianship must have the first aid measures to quickly rescue or protect the workers in the emergency; Capable of carrying out rescue operations. They must always monitor the status of the workers inside and keep in touch with them.铜焊丝,Copper Welding Rods,铝焊丝,aluminium welding wire,镍焊条,Nickel electrode,药皮焊条,Flux Coated Brazing Welding Rods