replacing the 12" RFSO flange
replacing the 12" RFSO flange
(OP)
Dear experts,
We have a 12" shell nozzle made from 12" RFSO 15# flange.
After installation to the tank by mistake the surface of this nozzle is damage and client instructed us to replace.
DO you have the procedure for this purpose ?
I would use arc gouge to gouge the fillet weld. Due some grinding on the neck then install the new flange and due PT.
There is also suggestion to cut the neck and make a new spool (flange with neck). If we are using this method, is there any clause in API 650 about how far minimum the but weld joint on the neck of the nozzle to the shell or to fillet weld ?
The projection from the shell to this nozzle is 250 mm.
Any comments would be appreciated.
We have a 12" shell nozzle made from 12" RFSO 15# flange.
After installation to the tank by mistake the surface of this nozzle is damage and client instructed us to replace.
DO you have the procedure for this purpose ?
I would use arc gouge to gouge the fillet weld. Due some grinding on the neck then install the new flange and due PT.
There is also suggestion to cut the neck and make a new spool (flange with neck). If we are using this method, is there any clause in API 650 about how far minimum the but weld joint on the neck of the nozzle to the shell or to fillet weld ?
The projection from the shell to this nozzle is 250 mm.
Any comments would be appreciated.





RE: replacing the 12" RFSO flange
RE: replacing the 12" RFSO flange
Yeah this is also good alternative.
We measure the length of the WNRF nozzle from the flange surface to the end of the neck. Then we cut the existing shell nozzle based on that length.
So we will have but weld joint from WNRF to existing nozzle neck.
PT for this butt weld I believe is sufficient.
Regards,
Syah
RE: replacing the 12" RFSO flange
RE: replacing the 12" RFSO flange
Thanks for your advice.
RE: replacing the 12" RFSO flange
RE: replacing the 12" RFSO flange
That is the best and economist way.
Thanks
Syah
RE: replacing the 12" RFSO flange
Does the job- economical-
RE: replacing the 12" RFSO flange
RE: replacing the 12" RFSO flange