A Borescope Inspection Is the Most Comprehensive...
Transcript of A Borescope Inspection Is the Most Comprehensive...
A Borescope InspectionIs the Most Comprehensive
Diagnostic Tool Available to Combustion Turbine Operators
and Owners Today.
Borescope InspectionsAllow For
Condition Based MaintenanceVersus
Hours & Starts Based Maintenance
Condition Based MaintenanceCan Allow You To Extend
Combustion Inspection &
Hot Gas Path Intervals
Borescope Inspections Ensure That Your Resources Focused on the
Unit(s) that Actually Need Maintenance.
Inlet Guide Vane Cracking on a Frame 5 Compressor.
A Thorough Compressor Inspection Should Include All Stages from the Inlet Guide
Vanes Back to the Stage 11 Rotor Blades at Four Locations.
7FA Compressor
• Frame 7FA rotor blade tip rub. Blade tip material adhering to the compressor case.
Compressor
• Stage R-0 trailing edge tip failure.
7FA Compressor
• This is one of 18 cracked blades that were identified on a Frame 7FA rotor. This rotor had been replaced previously due to a rotor blade failure.
Compressor
• Stage S-0 Stator Vane with torn metal at the trailing edge. Damage was caused by a stage R-0 tip failure.
Compressor
• Compressor R-1 blade tip failure.
Compressor
• This tip failure on a 7EA, stage R-1 blade, caused in excess of $500,000. 00 in collateral damage as it went downsteam.
Compressor
• Stator vane shim migrating out from between the stator vanes.
Frame 5 Case Break Hook Fit Inspections.
General view showing a hook fit failure on a frame 5 compressor.
Severe impact damage on a 7FA stage R-17 rotor blade.
Severe impact damage on a stage R-17 rotor blade.
Exit guide vane distress on a frame 7FA compressor.
7FA Exit Guide Vane Distress
• TIL 1315-2R1
TBC loss in a Combustion Liner.
Feather Seal Migration.
This is an improperly seated floating seal at the first stage
nozzle platform.
Discourager Seal Failure.
First Stage Nozzle Failure.
Turbine
• First Stage Nozzle Cracks.
First Stage Nozzle Damage
Turbine
• First Stage Nozzle Cracks
Turbine
• Frame 7FA shroud block TBC missing.
First Stage Bucket Damage
First Stage Bucket Damage
Second Stage Nozzle Crack
Second Stage Bucket Damage
Second Stage Bucket Damage
Honeycomb Seal Damage
Turbine
• Frame 7FA second stage nozzle discourager seal rubbed through by the second stage buckets.
Turbine
• Second Stage Bucket Angel Wings Have rubbed the discourager seals.
Third Stage Bucket Damage
This Photograph Shows Tip Shroud Damage on a Third Stage
Bucket.
A Comprehensive BorescopeReport allows Users to make educated decisions about the
condition of their unit(s).