A: No. For HRSGs, you need ASME PTC 4.4 (Gas Turbine Heat Recovery Steam Generators). PTC 4.1 is for direct-fired steam generators (coal, oil, gas, biomass).
If you are looking at "Asme Ptc 4.1.pdf," you are likely looking at an older standard. It is important to note the distinction between versions: Asme Ptc 4.1.pdf
The use of ASME PTC 4.1 provides several benefits, including: A: No. For HRSGs