Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici

Preliminary Report

19 October, 2012

For

Burak Marine

Aliağa İzmir TURKEY ESN 560-036

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 560-036 Engine Fired Hours Package Total Hours

Model LM2500PI Engine Fired Starts Package Fired Starts

Trips Total Trips

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.

Daily Activities

Friday, 19 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. Clearance is correct. HP compressor was found fairly dirty but no anomaly detected. T2/PT2 Probe: was secure and no damage, corrosion or obstructions were observed The inner and outer panels are fully intact with no distortion or other defects noted. No distortion was visible in the dome plate and the dome plate inner and outer overhangs were fully intact with no cracks or missing material. Thermal barrier coat was missing from numerous trumpet splash plates in varying degrees and some slight erosion was noted on the edges of the trumpet splash plates in the area were the thermal barrier coat is missing. Found a crack at 6 o’clock position on inner liner, out of limits. See picture. Some erosion and discoloration was found. 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 picture… PT was visually inspected. First stage blades as thoroughly as possible without rotating the power

turbine (inspection was made using a flexible borescope through the Pt5.4 ports). No cracking, nicks, dents, corrosion or erosion was observed. Both igniters have been removed and inspected. No anomaly found. Engine external status: engine shows an external dirtiness in general.

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 4

Results:

Engine legs

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 5

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 6

VSV actuator RHS Package roof

VSV torque lever

HP recoup

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 7

T48 probe Fuel pump

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 8

Borescope Pictures

High Pressure Compressor

Midspan Stage 0

Stage 1 Stage 2

Stage 3 Stage 4

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 9

Stage 5, salt residue Stage 6,

Stage 6 Stage 8

Stage 9 Stage 11, nick

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 10

Stage 12 Stage 13

Stage 15 Stage 16

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 11

Combustor

Swirler Coating delamination, swirler (#4 fuel nozzle)

Inner liners A crack found at 6 o’clock position on inner liner

Discoloration carbon build up at swirlers

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 12

HPT

S1 nozzles, cooling holes are clogged S1N

Some dirt/ salt on blades Dirt on shrouds

S1 blades TE

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 13

S2 blades S2 blades, salt residue

Power Turbine

PT Stage 1 PT Stage 1, salt residue

PT Stage 1 PT Stage 1

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 14

GENERAL INSPECTION RECORD GAS TURBINE

IGV and VSV lever arms were found free of side-to-side movement on all stages.

Aero Energy LM2500SAC Report

Report completed by – Adnan Leblebici 15

L&S Pump