Material for flue gas stack
Material for flue gas stack
(OP)
I have to select material for isolating the boiler from stack (two boilers are connected to same stack we need one for maintenance) . I am not sure for which material to use for blind ?
Our planner has offered a283 gr8 c which is a structural steel grade when I referred as me sec 2 part d it prohibits it's use in sec1 design hence I cannot use it in boiler .second option is a516gr60 which is a better grade can I use it for design or need any specific material ?
Thanks in advance for all extended help
Our planner has offered a283 gr8 c which is a structural steel grade when I referred as me sec 2 part d it prohibits it's use in sec1 design hence I cannot use it in boiler .second option is a516gr60 which is a better grade can I use it for design or need any specific material ?
Thanks in advance for all extended help





RE: Material for flue gas stack
It is surprising that there is no provision of isolation given in the flue gas ducts of the boilers.
The selection of material for this 'temporary' blind depends on the duration of outage of one of the boilers. If you are not sure of the duration, go for any SS material (SS 304 would be fine). If the duration is around a month, any CS would do (even A283 Gr C).
RE: Material for flue gas stack
RE: Material for flue gas stack
If higher, go with the recommendation of metengr ........ SS is not necessary.
MJCronin
Sr. Process Engineer