Inspection of centrifugal pump casing
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How is the centrifugal pump casing inspected after casting? RT, UT, or surface flaw detection?
Normal PT and VT, all set
It depends on the intended use: for less important occasions, a water pressure test is sufficient; for important occasions, RT is used for critical areas, while PT is used for the surface
From the perspective of flaw detection, casting defects are still classified as internal defects and external defects; RT, UT, PT, and VT are still used for their inspection
Generally, visual inspection (which is often not given much importance) and pressure testing are the most effective. During pressure tests, a considerable number of pump bodies leak
I saw that the imported shielded pumps used in the company are of German origin; their quality documentation includes visual inspections, surface PT testing, radiographic testing, as well as localized ultrasonic testing. The pumping medium is an extremely hazardous chemical. I believe your problem is still related to the medium being pumped. If it’s just water, then performing a surface PT test and an ultrasonic inspection should be sufficient. In this regard, it is also necessary to refer to the quality control regulations set by the pump manufacturers to see what their ITP standards are. Lastly, the more you do, the more it costs.