Tried to go through this and it required me to change my line over and gave up at that point in the checkout process . <| sep |> I believe this is different than what the article is referring to . I can ' t speak to BWRs , but in PWRs Feedwater Heating is used to improve the thermal efficiency of the steam cycle in the secondary plant . So Feedwater is constantly being preheated prior to entering the Steam Generators . Emergency Core Cooling it is my understanding based on the above comments what this article is referring to refers to water stored in a tank that is injected into the core , or recirculated from containment , in the event of a Design Basis Accident DBA . <| sep |> Damn thats not that bad <| sep |> Sigh . Well , isn ' t this just special . This has been a fun few weeks of playing let ' s see the new way Trump can screw us over with a barbed dildo . I ' d like to stop now .