Large condensor (horizontal tubular ht xchgr) has over 1400 3/4 OD tubes which contain cooling water at 30 psi. The shell surrounding the tube bundle contains a gas/vapor at less than 5 psi. Both the shell side and tube side are rated at 50 psi and Code (U) stamped.
The shell has developed 2...
I keep getting conflicting information regarding acceptable material for boiler tube plugs. I find SA-36 plugs readily available, but some have said that plugs must be made of SA-105 and not SA-36. Anyone else being told this?