the Mari heat steam is a system that provides the steam which worked at the HP turbine to the IP turbine after reheating at the boiler steam used at the HP turbine goes into the primary reheat Inlet header through the cold reheat steam pipe and goes out to the primary outlet header through the primary reheat tubes you steam from primary outlet header goes into the secondary reheat Inlet header and goes out to the tertiary reheat

header through the secondary reheat tube and tertiary reheat tubes steam from the tertiary reheat header is provided to the IP turbine through the hot reheat steam pipe CRV you the steam temperature when rated load is 541 degrees at final reheat exit