Buried pipeline coatings
Buried pipeline coatings
(OP)
I have a buried pipeline that requires a new coating. The old coating is failing. It is a crude oil line, 20" OD, that is cathodically-protected.
Can anyone help provide me with guidance on which is more appropriate coal tar epoxies vs. phenolics and what are the pitfalls for their use?
We are currently looking at Sherwin-Williams Macropoxy 646 Fast Cure Epoxy. Anyone have experience with this product?
Has anyone found it useful to specify NACE RP-01-69?
Thanks for any help that you can provide.
Can anyone help provide me with guidance on which is more appropriate coal tar epoxies vs. phenolics and what are the pitfalls for their use?
We are currently looking at Sherwin-Williams Macropoxy 646 Fast Cure Epoxy. Anyone have experience with this product?
Has anyone found it useful to specify NACE RP-01-69?
Thanks for any help that you can provide.





RE: Buried pipeline coatings
for our pipeline rehabilitation work.
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: Buried pipeline coatings
Any experience with this system?
By the way it has ASTM G42 of 20mm which seems high. What do others think is an acceptable cathodic disbondment value?
Any help would be appreciated. Thanks.
RE: Buried pipeline coatings
I've also found that the roustabouts that pipeline companies use for that task need a lot of supervision and inspection. If you just turn green hands loose to wrap a fitting or weld gap you deserve the horrible results that you always get.
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
The harder I work, the luckier I seem