Minimum pipeline wall thickness
Minimum pipeline wall thickness
(OP)
When a pipe is corroded or dented, frequently a clamp (PLIDCO clamp appears to be popular) is placed around pin hole leak or pipe Thermo warp is placed around the damaged section. Is there any guideline for what should be the minimum wall thickness (after corrosion pr dent) which is considered worth repairing ? What should be the remaining wall thickness in a pipeline which can be considered "beyond repair" and that section must be replaced? Thanks.





RE: Minimum pipeline wall thickness
RE: Minimum pipeline wall thickness
A dent is different and often if the dent is smooth and not less than 95% of the nominal ID, can usually be left in place. The issue is often that the dent is caused by a bucket which has resulted in a gouge as well as a dent. The gouge needs to be ground to eleimate the sharp edge, but all gouges should be clamped and slated for replacement as ther eis significnat work hardening at the root of the gouge which lonk term results in fatigue cracks and also has an effect on wall thickness.
In short, get a proper design assessment of your corroded area.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Minimum pipeline wall thickness