It seems that 2 methods applied to steam blow out. in firs method a sacrifice valve positioned at the end of pipeline and before temporary line ( valve must be quick open type) and after pipe filled with steam up to desired pressure, sacrifice valve will be opened and for some minutes (5-15...
We are preparing a steam blow procedure for a boiler and steam pipes upstream of a steam turbine.
Usually the disturbance factor can be calculated by the ratio of the pressure drop over the supheater during blowing to that calculated at boiler MCR.But it is not very precise.
So how to calculate...
