The Minimum Pressurization Temperature (MPT) or Minimum Safe Pressurization Temperature (MSPT) is the lowest temperature at which the hydroprocessing reactor can be pressurized again after a shutdown without the risk of brittle fracture of low alloy steel. At temperature above the MPT low alloy steel ensures sufficient toughness that saves it from brittle fracture. The … Continue reading Minimum Pressurization Temperature in Hydroprocessing Reactors