There is a newer edition of this document available. This Code provides directions and rules for conduct and report of results of thermal performances tests for open cycle gas turbine power plants and gas turbine engines, hereafter referred to as gas turbines. The object is to determine the thermal performance of the gas turbine when operating at test conditions, and correcting these test results to specified reference conditions. This Code provides explicit procedures for the determination of correct power output, corrected heat rate (efficiency), corrected exhaust flow, energy, and temperature. Tests may be designated to satisfy different goals, including absolute performance and comparative performance. It is the intent of the Code to provide results with the highest level of accuracy consistent with the best engineering knowledge and practice in the gas turbine industry. In planning the test, an uncertainty analysis must demonstrate that the proposed instrumentation and measurement techniques meet the requirements of the Code.