Air separation factory

1. According to the specific situation of the construction, formulate the fire protection scheme, establish and improve the fire safety system, and strictly abide by the operation rules. 2. Flammable and explosive materials such as paint and thinner shall not be stored in the project site. 3. The construction unit is not allowed to set up seasoning room in the project, and is not allowed to carry out paint allocation in the project. 4. No smoking is allowed in the construction site. A fire permit shall be issued and a special person shall be assigned to supervise the operation. 5. The operation site should be equipped with sufficient fire-fighting equipment. 6. During the construction period, the use of various open fire operations in the project shall be approved by the safety and environmental protection department of the construction unit, and sufficient fire-fighting materials and fire-fighting equipment shall be provided.

In order to check the installation quality, deformation under low temperature and smooth condition of pipelines, valves and field installed air separation plant in air separation column, needs to be further tighten the flange bolts at low temperature. It is necessary to start freezing before filling the cold insulation box with cold insulation material, which is called naked cooling. During naked cooling, the rectification column, main condensing evaporator and other main equipment shall be cooled to the minimum temperature for 2 hours respectively, and then the whole air separation unit shall be cooled for 3 to 4 hours. The deformation and leakage of each part shall be checked in detail, and the flange bolts shall be tightened again. After defrosting, the flange shall be heated to normal temperature before gas seal test can be conducted.