Drawing and blocking the blind plate: when the equipment is repaired or overhauled, when there are materials (gas, liquid and solid) in the equipment and pipeline, the blind plate is drawn and blocked under certain temperature and pressure conditions, or after the materials in the equipment and pipeline are purged, replaced and cleaned.
1. When plugging blind plates on pipelines and equipment with toxic media, operators should select protective articles according to GB/T 1 165 1.
2. When blocking the blind plate in inflammable and explosive places, the operator should wear anti-static work clothes and work shoes.
3. The production workshop (branch factory) should draw the position map of the blind plate in advance and number it uniformly.
4, blind plate pumping plugging operations, operating point pressure should be reduced to normal pressure, and supervision by designated personnel.
5. Two or more blind flanges should not be blocked on the same pipeline at the same time.
Temporary power consumption: power, lighting, testing and other lines whose power supply voltage level can touch personal injury and death are short-term and should not be installed according to the formal requirements. Formal lines that do not meet the requirements of electrical installation regulations are regarded as temporary lines.
Ground breaking operation: excavation, piling, ground anchor penetration depth greater than 0.5m, and stacking load above 50kg/㎡; Fill the ground with bulldozers, road rollers and other construction machinery.