Gentlemen, I work in the steel industry, specifically in the melt shop department which operates electric arc furnaces. My question is that those electric arc furnaces have water cooled panels around the furnace, and I am trying to install relief valves on the panels. the molten metal and slag in on the side of the panels can reach 3050 F on the molten metal side. the panel have circuits of water running through them to cool them while making steel. we are trying to learn at what pressure should we set the relief valves to? basically we worry when the panel starts leaking and the water start to convert to steam in the panels. I attached pictures of typical panel. please let me know what are your thoughts on calculations for flow, pressure drop, pressure setting for relief valves. Alot of time the circuits in the panels have one outlet and one inlet. Thanks for any help.