Should the inlet and outlet of the process tank be equipped with flexible connections?
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Section 6.2.25 of the Petrochemical Regulations stipulates that flexible connections should be used for the inlet and outlet pipes of storage tanks; this provision is found in the chapter on storage and transportation. Does it apply only to the tanks in tank farms? Do process tanks also need to comply with this requirement, given that some process tanks are even larger than those in tank farms?
According to the petrochemical regulations, flexible connections are required only for the inlet and outlet pipes of storage tanks. For process tanks, whether to use flexible connections requires specific analysis and judgment based on the actual circumstances. If the inlet and outlet of the process tank are exposed to temperature changes, vibrations, or other stresses, using flexible connections can effectively reduce the impact of these stresses on the pipes, thereby lowering the risk of pipe damage. Therefore, in practical design, it is necessary to decide whether to use flexible connections based on the characteristics of the process tank and the specific environmental conditions. .
Process tanks are usually under high pressure, and the risk of leakage due to flexible connections is relatively high. Pipe elasticity design can be adopted
It is necessary, mainly to account for the subsequent settlement of the tank foundation and the flexible connections of the pump inlet pipes.
It is rare to see process tanks connected with metal hoses