inspection of old Fiber glass/GRP pipes (4-1/2");
inspection of old Fiber glass/GRP pipes (4-1/2");
(OP)
Hi All,
I would like to ask you for some advice regarding inspection of old GRP pipes (4-1/2") which will be used as Casing in our new oil well service application.
Above casings (200 No's) were received two years ago and stored in our yard with tarpaulin cover. Now, end user is asking us to carry out inspection and clear these casing for well service application. I suppose, these casings were exposed to sunlight/UV and may have lost some physical properties. How can I ensure it? Are there any laboratory tests to be conducted prior to application? I need some advice with code reference.
Thank you.
Metboss
I would like to ask you for some advice regarding inspection of old GRP pipes (4-1/2") which will be used as Casing in our new oil well service application.
Above casings (200 No's) were received two years ago and stored in our yard with tarpaulin cover. Now, end user is asking us to carry out inspection and clear these casing for well service application. I suppose, these casings were exposed to sunlight/UV and may have lost some physical properties. How can I ensure it? Are there any laboratory tests to be conducted prior to application? I need some advice with code reference.
Thank you.
Metboss





RE: inspection of old Fiber glass/GRP pipes (4-1/2");
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: inspection of old Fiber glass/GRP pipes (4-1/2");
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
The plural of anecdote is not "data"
RE: inspection of old Fiber glass/GRP pipes (4-1/2");
All came back virtually as good as new. New types of GRE are no way near as bad at UV aging as the original stuff made 30 years ago and if it's been covered, why would there be an issue. Tryong to prove a negative is never easy, but some sort of destructive test is all you've got in my opinion unless the vendor comes up trumps and certifies it after an "inspection" costing you (or your client) several thousand dollars....
ISO 14692 part 4 appendix B gives guidance on storage and all four parts should be in your possession. As long as those guidleines have been followed then you should be Ok. Of course if you're using 2 year old epoxy glue ot fix these things then that's another story..
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: inspection of old Fiber glass/GRP pipes (4-1/2");
What are mechanical tests to be carried out and which ASTM standard shall we refer to?
Regards
RE: inspection of old Fiber glass/GRP pipes (4-1/2");
ASTM D 3299: Standard Specification for Filament Wound Glass Fiber Reinforced Thermoset Resin for Corrosion Resistant Tanks.
ASTM 2563 Level II: Standard Practice for Classifying Visual Defects in Glass Reinforced Plastic Laminate Parts Level II.
ASTM D 2583: Standard Test Method for Indentation Hardness of Rigid Plastics By Means of a Barcol Impressor.
ASTM D 2344: Interlaminar Shear Strength by Short Beam Method
It's not exactly what you are doing, but close. Maybe it'll lead you to the right solution.
I'll repeat LI's advice, ask the vendor. You want the old pipe to pass the same specs as new pipe being produced today. Can you send them samples for testing?
Good luck,
Latexman
Technically, the glass is always full - 1/2 air and 1/2 water.
RE: inspection of old Fiber glass/GRP pipes (4-1/2");
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.