Preliminary Report. 19 October, For. Burak Marine. Aliağa İzmir TURKEY ESN Under. Mehmet AKIN (Granite)

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1 Preliminary Report 19 October, 2012 For Burak Marine Aliağa İzmir TURKEY ESN Under Customer Representative: GE Field Service Representative: Burak ALDEMİR 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. Report completed by Adnan Leblebici

2 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 Vol I, Chapter 5-3. Outage Data: Engine Data: ESN 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 Chapter Revision/Manual Reference Borescope Inspection GEK Vol I (Change 1 15 April 2010 Date Completed Comments Report completed by Adnan Leblebici

3 Purpose of visit: DETAILS AND DATA This inspection was completed in reference to GEK Vol I, Chapter 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. 1 st 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 Report completed by Adnan Leblebici 3

4 Results: Engine legs Report completed by Adnan Leblebici 4

5 Corrosion on compressor Package LHS fwd Package RHS aft Report completed by Adnan Leblebici 5

6 Legs Report completed by Adnan Leblebici 6

7 Report completed by Adnan Leblebici 7

8 Report completed by Adnan Leblebici 8

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 Report completed by Adnan Leblebici 9

10 Stage 5 Stage 6 Stage 6 Stage 8 Stage 9 Stage 10 Report completed by Adnan Leblebici 10

11 Stage 11 Stage 13 Stage 16 Stage 16,wear on surface Report completed by Adnan Leblebici 11

12 Combustor Swirler Swirler inlet, sulfur buildup/coating delamination Inner liners One crack, inner liner at 3 rd panel. Trumpet plates, discoloration Outer liners Report completed by Adnan Leblebici 12

13 Secondary swirler, carbon buildup Light carbon streaks Fuel nozzle Crack sign Report completed by Adnan Leblebici 13

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 Report completed by Adnan Leblebici 14

15 S2 blades, salt on concave sides S2 blades TE S2 nozzles S2 blades S2 nozzles S1 blades shroud, signs of wear Report completed by Adnan Leblebici 15

16 Power Turbine PT Stage 1 PT Stage 1 GENERAL INSPECTION RECORD GAS TURBINE Variable Geometry Variable Stator Vane system Report completed by Adnan Leblebici 16

17 L&S Pump Report completed by Adnan Leblebici 17