Method for Detecting Hazardous Gas Concentrations within a Gas Turbine Enclosure

A method for detecting hazardous gas concentration from an exhaust duct of a gas turbine enclosure includes aggregating multiple exhaust air samples collected via a first and a second plurality of sampling ports disposed within the exhaust duct to provide first and second aggregated exhaust air samples to primary and secondary sensors disposed outside of the exhaust duct. The method further includes sensing hazardous gas concentrations within the first and second aggregated exhaust air samples, where the primary and secondary sensors communicate signals that are indicative of the hazardous gas concentrations and functionality of the primary and secondary sensors to a computing device. The method further includes monitoring the hazardous gas concentrations within the first and second aggregated exhaust air samples with respect to a percentage of a lower explosive limit and monitoring the functionality of the primary and secondary sensors via the computing device.