damaged fitting
damaged fitting
(OP)
we have a fitting built under B16.9 , our code of construction is B31.3 normal service . the fitting (30 " elbow )has been damaged (don't know how and don't care ).
can someone please tell me where i can look to find if the deflection measured now renders the fitting usable or headed for the scrap pile ?
thanks in advance
can someone please tell me where i can look to find if the deflection measured now renders the fitting usable or headed for the scrap pile ?
thanks in advance





RE: damaged fitting
RE: damaged fitting
(parabola shaped ) that is roughly .300 " deep at the center . i have looked at ASME B16.9 but don't see anything i can use as guidance I think B16.9 is basically for manufacturing ,this is more of a 'fit for service ' issue . is there another place to look ?the whole line will be hoydrotested and i intend to issue a Request for Information to the Client but i want to be able to point to a code reference when i issue it .
any help would be appreciated .
RE: damaged fitting
With regards to the question of assessing the significance of the dent, there are a number of sources you could look to for guidance on the fitness for service question:
- ASME B31.8S
- API 1156
- API 1160
- US CFR Part 192 and Part 195
- "Appraisal and Development of Pipeline Defect Assessment Methodologies" by MSL Engineering
In general, any dent with any indication at all of a gouge or kink is not acceptable and should always be removed. I'm also not sure how the fact that this dent is in an elbow might otherwise affect the screening criteria mentioned in the above documents for dents that do not have gouges or kinks.
RE: damaged fitting
http://www.mms.gov/tarprojects/336/336AC.pdf
RE: damaged fitting
Regards,
SNORGY.