Thank you all for your input. Its truly amazing that there were not more brittle fracture problems in the 50s and 60s. I am new to ENG-TIPS. Its good to know there are knowledgeable people out there willing to share their knowledge.
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I am working on an old vessel that is constructed of A-212-B. Thickness is 2.35 inches. A-212-B was replaced by A-515. In regard to low temperature operation, the exemption curve UCS-66 lists A-515 under Curve B with no mention of whether or not it is normalized. Spec A-515...
I am evaluating a pressure vessel that operates at very low temperatures. It was built in 1982 and has been in what should be non corrosive service since that time. The original thickness was 1 inch. The latest thickness values range from .805 to .808 on the entire vessel. The thickness...
I agree totally with the suggestion by Duwe6 for the fix. Exactly what I told the client. I am working with photos and thickness data from the recent TAR and the rerate was done after the tower was restarted. There is only about .005 corrosion allowance without the gouge. The gouge resulted...
You asked a pretty wide-open question with very little to go on.
Extreme operating conditions such as severe cycling conditions or severe temperatures. can affect the life of a vessel, but normally short life is due to improper material to resist corrosion or inadequate corrosion allowance...
I recently performed a rerate of a 55 year old vessel. Based on inspection data there was some general thinning in the feed area, and everything else was in good order. The inspection report mentioned a goove adjacent to a nozzle that was described as “0.080 deep and about 1.5 inches long”...
