TURBINE CASING AND ROTOR

Turbine rotor, casing and diaphragm part cleaning utilizing croygencies (CO2) cleaning is one of the most effective means of removing loose surface contaminantssuch as oil, grease and loose surface rust. Traditional cleaning of these parts utilize walnut shell, sand, grit, or aluminum oxide abrasive blasting. Along with this type of blasting, containment enclosures for media containment are required to be constructed and ventilation for the dust suppression is required.

The dry ice process is non-abrasive and will not profile metal. With the use of cyrogenic cleaning the lower turbine casing can be cleaned in place. In addition, there is no need for containment structures; and if neccessary, other crafts can work near the area being cleaned. The total time needed for dry ice blasting on a Frame 7 lower casing would normally be less than one twelve hour shift.

If in addition there is a desire to clean the rotor in place, using the dry ice blasting method this would not create a problem. However, with traditional methods there would be substantial problems capturing used medica and the clean-up issues that follow. Trapped abrasive media could cause problems in the future turbine rotor operations.

With the use of dry ice any and all of the upper casing and diaphragm parts can be cleaned where they are placed. Most cleanups consist of vacuuming the area blasted and adjoining areas around the unit. With dry ice there is no secondary waste generated and the cleanup time in minimal resulting in time and money savings for our customers.