How to inspect the butt joint snake tube
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How to inspect the heat exchange coils (coiled tubes) in the equipment? ? ? Are ball-passing tests and pressure tests also carried out? ? So what is the specific test pressure (water pressure, airtightness)? ?
This should be related to the area being used: ours is relatively simple; a pressure test using water is sufficient, with a pressure of 0.5 MPa, and the pressure drop over 24 hours should not exceed 0.02 MPa. Since it is used in the temperature-regulating water tank of the equipment, the water enters the equipment jacket after being temperature-regulated; thus the likelihood of leakage into the material is low and there is little risk involved. . . . . A quick search online shows that using them in other applications proves to be much more complicated. There are quite strict inspection standards for marine heat exchangers; you can find them at www.msckobe.com/links/gb/gbt13414_92.pdf. This post was last edited by Pseudo Xiao Bao on 2009-3-18 at 14:33
The inspection and testing requirements for the heating or cooling coils (serpentine tubes) inside the equipment should indeed be determined based on their location of use and level of importance； The internal coils in our equipment are mainly used in reaction vessels and various storage containers, so high standards are required. Typically, 100% radiographic testing of their welds is necessary, along with a pressure resistance test at 1.5 times the design pressure (using hydraulic pressure). Additionally, 100% surface non-destructive testing is required ； However, due to the large diameter of the seamless tubes used to manufacture the coils, a ball passing test is generally not carried out. For reference!