See anything out of the ordinary? Thank you to Chris Cookingham, Project Engineer, for sharing this!
Answer: Heat exchangers use Primary flow (HxP in the image) to cool Secondary Flow (HxS in the image). However, this particular item is flowing in reverse, so it is actually doing the complete opposite. HEA was tasked with troubleshooting this item when it was developing issues after start-up had been completed and the secondary outlet continued to trip on “High HxS Out Temperature”.