Seeking advice on valve and pipeline flaw detection
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We have a batch of cast valves; if the customer requires 100% flaw detection of the pipelines, can these cast valves still be used? After all, casting can result in porosity and looseness
Flaw detection does not affect the material structure or physical damage of the equipment.
We are performing weld inspection for butt welding of pipelines; it’s not acceptable either if the valve is located too close to the weld. This seems contradictory, as there are no inspection requirements for valves.
Valves also have integral radiation. . .
This post was last edited by Lao Huanggua Pen Lvse by 14:10 on 2019-4-4. Using it initially isn’t a big problem, but if you take X-rays of the valve as well, that becomes dangerous. When manufacturing the valve, you should have used castings suitable for X-ray imaging; now all we can do is wish you good luck
Piping flaw detection refers to the non-destructive testing of welds, right? Valve inspection and pipeline inspection are likely not the same thing
Cast valves cannot be inspected by flaw detection; attempting to apply dyeing can achieve 100% coverage
Valves also need to be inspected; if they pass the inspection, they can be used
For conventional valves, non-destructive testing involves PT and MT; in my previous projects, PT was generally used for the inner surface of the valve body