Valve fault test system

A program product stored on a computer readable medium, which when executed by at least one computing device, performs the following:

• provides instructions to test for leakage in a valve within a turbine system having a gas turbine and a steam turbine sharing a common shaft, by performing actions comprising:
• providing instructions to place the gas turbine in a control mode;
• determining a power output for the steam turbine corresponding to the control mode of the gas turbine;
• preventing steam flow to the steam turbine by providing instructions to close at least one of a steam turbine control valve or a steam turbine stop valve;
• determining a power output for the steam turbine corresponding to the steam flow being prevented to the steam turbine;
• and
• comparing the power output for the steam turbine corresponding to the closed at least one of the control valve or the stop valve to an expected power output for the steam turbine to determine whether a leakage in the valve exceeds a predetermined threshold.

A system comprising:

• a gas turbine;
• a steam turbine operably connected to the gas turbine by a common shaft;
• and
• at least one computing device operably connected to at least one of the gas turbine and the steam turbine, the at least one computing device adapted to test for leakage in a valve by performing actions comprising:
• placing the gas turbine in a control mode;
• determining a power output for the steam turbine corresponding to the control mode of the gas turbine;
• preventing steam flow to the steam turbine by providing instructions to close at least one of a steam turbine control valve or a steam turbine stop valve;
• determining a power output for the steam turbine corresponding to the steam flow being prevented to the steam turbine;
• and
• comparing the power output for the steam turbine corresponding to the closed at least one of the control valve or the stop valve to an expected power output for the steam turbine to determine whether a leakage in the valve exceeds a predetermined threshold.