Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici

Preliminary Report

19 October, 2012

For

Burak Marine

Aliağa İzmir TURKEY

ESN 456-675

Under

Customer Representative: Burak ALDEMİR

GE Field Service Representative: Adnan LEBLEBİCİ Mehmet AKIN (Granite)

All technical recommendations and information contained in this report are based on GE manuals that have been developed and approved for use with GE engines and parts that have been operated and maintained in accordance with GE technical documentation and recommendations. GE has no technical knowledge of, nor obligation for, non GE-approved parts and repairs. Accordingly, this report is not intended to apply to non GE-approved parts and repairs, nor to any parts that may be directly or indirectly affected by non GE-approved parts and repairs.

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici

CONCLUSIONS & RECOMMENDATIONS

The purpose of this visit was to perform a visual and borescope Inspection. The engine visually was found in satisfactory conditions. The compressor, combustor and power turbine stage 1 & 6 blades & nozzles were inspected. This periodic borescope inspection was completed in reference to GEK 97310 Vol I, Chapter 5-3.

Outage Data: Engine Data:

ESN 456-675 Engine Fired Hours Package Total Hours

Model LM2500PI Engine Fired Starts Package Fired Starts

Trips Total Trips

Maintenance Data:

WP, SB, SL, PB, PL Performed

Revision/Manual Reference Date Completed

Comments

Chapter 5-3.5 Borescope Inspection

GEK 97310 Vol I (Change 1 – 15 April 2010

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 3

DETAILS AND DATA

Purpose of visit:

This inspection was completed in reference to GEK 97310 Vol I, Chapter 5-3.5.

Work performed:

A borescope of the engine was performed using a flexscope and a turning tool.

Daily Activities

Thursday, 18 Oct 2012 Units are original packages that were removed and moved to warehouse. Engine was kept at warehouse almost 1 year without preservation. HP compressor, combustor and HP turbine borescope ports were removed. Only 1 fuel nozzle were removed and inspected. Found it in good shape. Feeder tubes are fine. HPCR assy stage 1 blade midspan dampers are generally in good condition. Found oil leak signs at first stages of the compressor case. Found a crack panel 3 inner liner, out of limits. Some erosion and discoloration was found. HP compressor was found fairly dirty but no anomaly detected. 1st stage HPT blades: nothing abnormal was observed on flow path concave side and leading edges. Some loss of coating was detected. 2nd stage HPT blades: nothing abnormal was observed on flow path concave side and leading edges.

1st stage HPT nozzles: Cooling holes on HP S1 nozzles are mostly clogged. See pictures… Engine external status: engine shows an external dirtiness in general. A limited inspection of the TMF liner was performed. No damage or abnormal conditions were observed

Aero Energy LM2500SAC Report

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Results:

Engine legs

Aero Energy LM2500SAC Report

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Corrosion on compressor Package LHS fwd

Package RHS aft

Aero Energy LM2500SAC Report

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Legs

Aero Energy LM2500SAC Report

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Aero Energy LM2500SAC Report

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Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 9

Borescope Pictures

High Pressure Compressor

Midspan Midspan, sign of wear at carboloy

Stage 1, signs of oil on compressor case Stage 2

Stage 3, white build-up residue on blade surface Stage 4, one blade has dent on LE

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 10

Stage 5 Stage 6

Stage 6 Stage 8

Stage 9 Stage 10

Aero Energy LM2500SAC Report

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Stage 11 Stage 13

Stage 16 Stage 16,wear on surface

Aero Energy LM2500SAC Report

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Combustor

Swirler Swirler inlet, sulfur buildup/coating delamination

Inner liners One crack, inner liner at 3rd panel.

Trumpet plates, discoloration Outer liners

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 13

Secondary swirler, carbon buildup

Light carbon streaks Fuel nozzle

Crack sign

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 14

HPT

S1 nozzle, cooling air holes clogged, heat distress is observed by dark coloration on nozzles.

S1 blades, crack at tip and dust on shrouds Wear on shrouds

Rub signs on shrouds S1 Blades TE

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 15

S2 blades, salt on concave sides S2 blades TE

S2 nozzles S2 blades

S2 nozzles S1 blades shroud, signs of wear

Aero Energy LM2500SAC Report

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Power Turbine

PT Stage 1 PT Stage 1

GENERAL INSPECTION RECORD GAS TURBINE

Variable Geometry Variable Stator Vane system

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Report completed by – Adnan Leblebici 17

L&S Pump