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Turbine Steam Path Audits for Improved Performance and Profitability
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This paper describes the use and value of conducting steam path audits in turbines. Critical measurements and observations made during overhaul identify and quantify the effects of component degradations upon turbine performance as compared to design conditions. The information generated permits performance oriented repair actions to be economically justified and prioritized. Formerly regarded as a lifetime career activity, the complex audit methodology has now been computerized. This enables plant engineers to conduct in-house audits after a brief training session that covers measurements to be taken and procedures for entering data into a Personal Computer. The paper describes the various flow path components evaluated in an audit and the impact that deviations from manufacturer's design conditions can have upon turbine performance. Economically oriented maintenance actions can be selected and prioritized through use of critical flow path measurements taken during the opening of a turbine. Workmanship can then be checked by means of a closing audit.
SubjectTurbine Steam Path Audits
Babson, P. E. (1991). Turbine Steam Path Audits for Improved Performance and Profitability. Energy Systems Laboratory (http://esl.eslwin.tamu.edu). Available electronically from