When does the loading of a gas turbine typically begin?

Loading of a gas turbine typically begins after the warm-up period. This is crucial because the components of the gas turbine, including the turbine blades and combustion chamber, need to reach operational temperatures to ensure efficient and safe operation. During the warm-up, various systems are brought up to temperature, allowing for optimal performance and minimizing thermal stress on the materials.

Starting the loading process before the warm-up can lead to mechanical failures or reduced efficiency, as the turbine may not be able to handle the thermal and operational stresses effectively. Once the gas turbine has been warmed up sufficiently, it can be loaded safely and perform optimally, allowing for effective energy generation. The other options, while they may relate to operational processes, do not accurately describe the appropriate timing for initiating the loading of a gas turbine.