Assessment of corrosion defects in buried pipe lines
Assessment of corrosion defects in buried pipe lines
(OP)
Resent ILI data shows that 75% Wt loss for 10mm x 15mm area for a API 5L X52 (7.9 mm thick)
Gas pipe line. As per the effected area method calculation this defect can be attended by blasting the surface and by applying epoxy coating to the surface. Apart from coating for an in service pipe line, is there any other method to rectify this wall loss defect? Can we go step further and have a type A sleeve repair by using clock spring?
Gas pipe line. As per the effected area method calculation this defect can be attended by blasting the surface and by applying epoxy coating to the surface. Apart from coating for an in service pipe line, is there any other method to rectify this wall loss defect? Can we go step further and have a type A sleeve repair by using clock spring?





RE: Assessment of corrosion defects in buried pipe lines
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Assessment of corrosion defects in buried pipe lines
RE: Assessment of corrosion defects in buried pipe lines
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Assessment of corrosion defects in buried pipe lines
You did not mention if you will field verify the area, only the ILI tool has given these measurements. You should always field verify the ILI data and run your own effective area calculations based on what you find, as ILI data is often innacurrate despite what ILI vendors would have us believe.
RE: Assessment of corrosion defects in buried pipe lines
Many thanks for both of you guys (S.Jones & Brimmer)for your
excellent outputs