Treatment of pressure pipeline defects
Thread Content
Recently, a regular inspection was conducted on the pressure pipelines in the plant’s storage tank area, and a regular inspection report was issued. The safety status level was rated as grade 3, with the next inspection due in three years. However, the report shows that the most serious defect detected by radiographic testing in the inspected area was lack of penetration; this defect covered the entire circumference of the pipe, with a height of 0.5 mm. The pipe specifications were ф89×3.0 mm, and its safety rating was level 3 (the medium inside the pipe was propane, at a pressure of 0.65 Mpa). Production is currently ongoing, and the storage tanks contain material, so it is not possible to carry out any repairs at the moment. It is planned to address this issue after the propane in the tanks has been used up. Is a defect like this, where there is insufficient welding, very serious? Do we not need to handle it for now? Thank you all for your advice!
If it cannot be cleared, it is best to find a qualified agency to conduct an assessment. And temporary reinforcement measures are taken externally. It’s just a suggestion.
Incomplete penetration is a serious defect, especially around the entire circumference; however, since it is only 0.5 mm, it was classified as grade 3 in the routine inspection. With such defects, no one knows how long the pipeline can remain leak-free or intact; it is recommended to address these defects as soon as possible.
Create a marker to draw attention. There are potential hazards