Nozzle erosion problem
Nozzle erosion problem
(OP)
Hi, we have a 2" 45 degree carbon steel nozzel to a veseel that is UT inspection showed down to 0.157" wall thickness compared to the nominal size of 0.343" WT due to impingement erosion. If the MAWP is 200 psi, do I need to change out the nozzle? Do we still have enough metal meet the pressure requirement?
If we need to repair the nozzle, what will be involved (x-ray, heat treating, etc)? Could we do the repair without removing the vessel?
Thanks in advance.
If we need to repair the nozzle, what will be involved (x-ray, heat treating, etc)? Could we do the repair without removing the vessel?
Thanks in advance.





RE: Nozzle erosion problem
some countries are probably different
not enough information to tell if PWHT is required
You can do in place, if you are qualified,
have NBIC "r" stamp (assuming usa)
have qualified weld procedures and welders
write a repair procedure and present to AI
address required nde
do the repair
do the nde
fill out 'R" paperwork
have AI sign it
RE: Nozzle erosion problem
RE: Nozzle erosion problem
The answer is "it depends" on a large number of factors, so you should get someone who works with FFS-1 all the time involved. Where in Canada are you?
RE: Nozzle erosion problem
RE: Nozzle erosion problem