I am not a corrosion expert, but I know that both of those acids can be tough on stainless, even dilute. Monel might be a good choice. Hasteloy would probably work too, but is very pricey.
Another possibility is HDPE. Not sure what kind of radiation you are talking about, but HDPE is used as...
The only case I see that would warrant a relief on the shell side of your aftercooler is a blocked-in situation in which the inlet and outlet cooling water valves are closed and the compressor is allowed to run. The heat from the tube side would cause expansion on the shell side. In this case...
The NBBI Rules and Recommendations for the Design and Construction of Boiler Blowoff Systems (1991) shows an orifice in the discharge line from a blowoff tank and gives criteria for calculating the orifice size. However, the purpose of the orifice is never discussed. Can anyone explain the...