gas turbine documentation needed

i am looking documentation for gas turbine for power generation. does anyone has any such as P&ID with list of all digital and analog inputs and outputs with instrumentation ranges, cross section drawings, ...
if anyone has documentation for combined cycle or cogeneration service it would be even more useful.
i have a number of books but they are all more or less theoretical, not covering much of real problems.
thank you in advance
inzenjer

Im looking for siemens sgt OM or training manuql