and turbine parts into high temperature components and low temperature components only neither is it required to manufacture a full ip turbine with high temperature components nor is it necessary to weld together casings parts or other turbine parts made from high temperature alloys on the one side and conventional alloys on the other side the welds between different alloys in a high temperature steam environment are found to pose a risk for crack initiation and can be a major source of long term defects in usc turbine plants in the second reheater 152 the steam is again heated to a temperature around 720 or 730 degrees celsius after passing through the second reheater the steam enters into a steam feed pipe 126 and through a valve 133 into the second intermediate pressure turbine 162 as with the first ip turbine 161 the second ip turbine 162 is in this example also separated into a first high temperature part 162 1 and a second low temperature part 162 2 the separation means that the first high temperature part 162 1 is housed within or surrounded by an inner casing separated from the inner casing of the second low temperature part 162 2 which has its own inner casing at this stage the feed steam has gained through the reheating a temperature of around 720 or 730 degrees celsius and a pressure of around 30 bar the first high temperature part 162 1 of the ip turbine 162 is manufactured using essentially the same high temperature resistant materials as the hp turbine 14 and the first high temperature part 161 1 while requiring even less pressure.