A steam path audit is a physical inspection of the turbine steampath, conducted while the rotor is on the half-shell. The purpose is to identify and quantify performance problems due to deterioration of steampath components. Engineers and maintenance personnel use the results of audits to identify the most cost-effective repairs and to justify repair recommendations.
MD&A offers both thermodynamic and structural audits. Audits are also an excellent way to predict the return to service performance of your machine, following repairs.
Data taken during a steampath audit can also help to:
During an audit, photographs are taken of damage and are included in each unit's audit report. Photographs provide a convenient method for recording and confirming the history of repairs and the extent of damage. Steam path audits are also a useful method to quantify and isolate the performance of new parts. OEMs often guarantee that certain steampath upgrades will contribute a specific percentage to improve turbine performance. A steampath audit is an accepted and repeatable method for quantifying the contribution of these parts, while also determining the performance gained as a result of other maintenance that was performed during the outage.
See our seminar that we offer on Turbine Performance under our Seminar schedule.
Mechanical Dynamics & Analysis, Ltd. | 19 British American Blvd., Latham, NY 12110 | P (518) 399-3616 | F (518) 399-3929