Method for detecting burner failure

A method for detecting a burner failure in a gas turbine engine having a combustor and a turbine disposed downstream of the combustor, the combustor having a plurality of burners arranged annularly, the method comprising the steps of:

• A) providing a plurality of temperature sensors arranged annularly at an outlet of the turbine, the plurality of temperature sensors having respective temperature ranges;
• B) obtaining a plurality of temperature signals from the plurality of temperature sensors;
• C) determining a plurality of validated temperature signals from the plurality of temperature signals, wherein the plurality of validated temperature signals is within the respective temperature ranges of the respective temperature sensors;
• D) determining a temperature focus at least based on the plurality of validated temperature signals;
• E) improving the temperature focus such that the temperature focus is within a tolerance range;
• and
• F) performing at least one hazard protection action at least when the temperature focus crosses a predetermined threshold.