Is X-ray inspection required for welding chemical process pipelines?
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Is X-ray inspection required for welding process pipelines in the chemical industry?
It is necessary; flaw detection is safer this way. In normal observations, there are many situations where we at Chang cannot detect the location of the problem with the naked eye.
Not all are subject to flaw detection; they apply to pipes and containers used for transporting and storing chemical media that are at high temperatures and pressures, prone to vaporization, or toxic
Medium and high-pressure pipelines require it; the others do not
As requested! Some are full inspections, while others are only spot checks, at a rate of 5% of all weld joints. For those with a small diameter of 2\" or less, magnetic particle testing is required for plug welding. You may refer to the provisions of the \"Code for Construction and Acceptance of Industrial Metal Piping Projects\" GB50235.
For the non-destructive testing of pipeline welds, it is necessary to refer to the requirements of both GB50316-2008 and SH3501-2002, as these two standards specify different requirements for certain chemicals.
Some high-pressure pipes with large diameters require flaw detection; the specific types of pipes that need such detection are determined according to relevant standards! !
Determined in accordance with the Regulations for Regular Inspection of Process Piping
High-pressure pipelines require 100% flaw detection, while medium and low-pressure pipelines generally only need 10% flaw detection at the welds; this is what we used to do as well
That’s right, our factory is the same.
The pipeline under design in our company has a pressure rating of 0.33 MPa; although the media inside and outside the pipeline are non-toxic, 100% X-ray inspection is required, which increases costs for the client