We removed the damaged tubes and welded plugs into the tubesheet early last week. We then restarted these two systems. The start-up went very smoothly and neither of the heat exchangers made a noise .... but we started with empty heat exchangers, not flooded.
We disabled the two steam inlet...
We have two shell and tube heat exchangers that were just put into service in the last month. They are for process and make-up air heating with 45 psig steam in the shell and 40% propylene glycol through the tubes. The heat exchangers are simple horizontal u-tube with ¾” x 0.049” stainless...
