Steam Drum - Separators Replacement
Steam Drum - Separators Replacement
(OP)
Question:
We need to replace existing separators from a steam drum with new separators. Can Separators be supports welded with shell ? Is it a violation or it will require R stamp ?
We need to replace existing separators from a steam drum with new separators. Can Separators be supports welded with shell ? Is it a violation or it will require R stamp ?





RE: Steam Drum - Separators Replacement
RE: Steam Drum - Separators Replacement
Can you please help me with the following as well ?
Our company does not contains R stamp, now this project is under manufacturing stage of separators that will be installed in May 2017. What will be the process for R stamp?
and what inspection & testing processes shall be during and after installation of separators
RE: Steam Drum - Separators Replacement
http://www.nationalboard.org/
Typically for attachment (fillet) welds to a pressure boundary (drum shell surface), either Liquid Penetrant or wet fluorescent MT are selected to ensure the integrity of fillet welds.
RE: Steam Drum - Separators Replacement
Can you please help me with the following as well
I have WPS for P.No 1 Group 1 SA 106 Gr. B, Will it be approved / applicable for SA 516 Gr 70 P. No. 1 Group 2?
RE: Steam Drum - Separators Replacement
RE: Steam Drum - Separators Replacement
I suggest you look into finding a way to detach the separators an inch or two away from the ID of the drum, thereby making it a non-Code weld. If this isn't possible, see NBIC RD-1030 for PWHT alternatives.
-Christine
RE: Steam Drum - Separators Replacement
Regarding PWHT, we are following ASME VIII Div 1 UCS-56 which states that PWHT is applicable for P1 material unless preheat of 200F is applied for 32mm to 38mm thick shell plates
RE: Steam Drum - Separators Replacement
RE: Steam Drum - Separators Replacement
Thank you for mentioning PWHT exemption code
There is another question regarding WPS
IS there any separate WPS required for socket welds, we have already butt weld wps
RE: Steam Drum - Separators Replacement
RE: Steam Drum - Separators Replacement
RE: Steam Drum - Separators Replacement
Nathan Brink