How to caculate the operation pressure of boiler .
How to caculate the operation pressure of boiler .
(OP)
Hello Members
How to calculate the operation pressure of boiler if the thickness of the supper heater tubes reduce.
Thank you very much for reply.
best regard
jamil
How to calculate the operation pressure of boiler if the thickness of the supper heater tubes reduce.
Thank you very much for reply.
best regard
jamil





RE: How to caculate the operation pressure of boiler .
The design thickness is 4.2mm...
The new thickness is 3mm.
The operation pressure is 134kg/cm^2..
How to caculate the new operation pressure...
thankx
RE: How to caculate the operation pressure of boiler .
I don't think anyone is going to touch this one - there are so many factors to consider besides the reduced thickness of the superheater tubes.... and we need to understand what you are trying to do, put an old boiler back into service? What's on the nameplate? What about the other components? If you're looking to re-design the boiler, then you need to do that in it's entirety, not just focus on the superheater tubes.
RE: How to caculate the operation pressure of boiler .
One guideline sometimes used is --If the tubes are completely "within the setting" of the boiler and the wall thickness has eroded or corroded only a small section of the tube's circumference ( perhaps 60 degrees out of 360 degrees) then no derate may be needed if the remaining wall thickness is at least 50% of the minimum required per code calculation.
The code calculation used to determine the minimum required wall thickness is defined in whatever desing code was used to design the boiler.