STEAM-TURBINE RISK ASSESSMENT PROJECT INSPECTION AND OVERHAUL OPTIMIZATION OF STEAM-TURBINES

The pulp and paper industry wants to increase time between overhauls o f steam turbines to reduce direct overhauling and inspection costs. Ma chinery engineers sometimes express the basis for justifying additiona l overhaul and inspection work as a ''risk of failure.'' The aim of th e Steam Turbine Risk Assessment Project (STRAP) was to develop a metho dology and model to address optimization of overhauls by identifying a nd quantifying the ''risk of failure'' associated with maintenance, op eration, and engineering practices applied to steam turbines. This pap er details model development, demonstrates model application to evalua te a turbine, and displays the results achieved through testing of the analysis.