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).