If you are updating your testing procedures or reviewing a recent test plan, here are the areas where "new" guidance or strict enforcement of PTC 6 creates the biggest impact compared to older, lax practices.
When searching for the "new" PDF, ensure you are downloading the correct code for your turbine type: asme ptc 6 pdf new
The new standard fully adopts the IAPWS Industrial Formulation 1997 for water and steam properties. This replaces the older ASME Steam Tables. The difference in enthalpy calculations can be as high as 0.5%, which is significant for a PTC 6 test. If you are updating your testing procedures or
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