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GE MS-6001B Maintenance Instructions Manual

Gas turbines with dln-1 combustion systems gas only
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Inspection and Maintenance Instructions
For MS-6001B Gas Turbines
With DLN-1 Combustion Systems
Gas Only
GEK 107048
Rev. 0 (11/98)
GE Power Systems
Gas Turbine

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  • Page 1 GE Power Systems Gas Turbine Inspection and Maintenance Instructions For MS-6001B Gas Turbines With DLN-1 Combustion Systems Gas Only GEK 107048 Rev. 0 (11/98)
  • Page 2 Gas Turbine Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK. I–2...
  • Page 3 Inspection and Maintenance Note NEW FORMAT The Combustion Inspection, Hot Gas Path Inspection and Major Inspection sections of this manual have been reformatted to separate the Disassembly, Inspection, and Reassembly Operations for each inspection. The figure numbers and page numbers have also been revised to follow this format.
  • Page 4 Note Inspection and Maintenance THIS PAGE INTENTIONALLY LEFT BLANK.
  • Page 5 SP-11 Special Tools (MS-6001B DLN-1) ........
  • Page 6 ............MI-R-1 MAINTENANCE INSPECTION FORMS List of all MS-6001B DLN-1 Inspection Forms ......MF-1 Forms .
  • Page 7: Table Of Contents

    Inspection and Maintenance — GEK 107048 Table of Contents LIST OF ILLUSTRATIONS Figure Title Page Parts Life-Factors ........... . Effect of Fuel .
  • Page 8: Figure Title

    Table of Contents Inspection and Maintenance — GEK 107048 Figure Title Page CI-I.6 Cap and Liner Details ..........CI-I-17 CI-I.7 Cap, End View...
  • Page 9 Inspection and Maintenance — GEK 107048 Table of Contents Figure Title Page HGP-I.8 Unacceptable Crack Propagation......... HGP-I-5 HGP-I.9 First-Stage Bucket Details.
  • Page 10 ........STM-16 MS-6001B DLN-1 Borescope Access Hole Locations ......
  • Page 11 Manager: Technical Communications and Publishing GE Company Building 23, Room 290 1 River Road Schenectady, New York 12345 Note: All dimensions called for throughout the maintenance publication are in...
  • Page 12 Notes, Cautions and Warnings Inspection and Maintenance THIS PAGE INTENTIONALLY LEFT BLANK. viii...
  • Page 13 INSERT INTRODUCTION...
  • Page 15 GE Power Systems Gas Turbine Introduction Reformated, September 1991 GENERAL Operation of the combustion gas turbine, as of any rotating power equipment, must include a planned pro- gram of periodic inspection, with accompanying repair and replacement of parts as necessary, to ensure the maximum availability and reliability of the unit.
  • Page 16 Introduction Inspection and Maintenance The factors having the greatest influence on the life of parts for any given machine are shown in Fig- ure 1-1. Fuel The effect of the type of fuel on parts life is associated with the radiant energy in the combustion process and the ability to atomize the various liquid fuels.
  • Page 17 Precise estimates of the outage duration resource requirements and costs associated with the inspection of a specific installation may be obtained from your GE Company Apparatus and Engineering Services Operation Representative.
  • Page 18 It is also recommended that the Hot Gas Path inspection be conducted under the technical direction of the GE Company Field Service Representative for accurate analysis of inspection data and most effective use of outage time.
  • Page 19 On units fitted with chemloy bushings (GE drawing numbers 315A9681 and 339A9913) that do not exceed the wear limits specified, verify that the bushings are not loose in the inner segment holes.
  • Page 20 16,000 Parts GE Power Systems maintains a large volume of replacement parts to cover the requirements of gas tur- bine owners. The parts protection system is designed for rapid response; however, there are periods of heavy demand where certain parts may not be readily available for planned inspections.
  • Page 21: Parts Life-Factors

    Inspection and Maintenance — GEK 107048 Introduction Type of Fuel Starting Frequency Load Cycle Environment Maintenance Practices Figure 1-1. Parts Life-Factors Natural Fuel Type Figure 1-2. Effect of Fuel I–7...
  • Page 22: Effect Of Starts

    Introduction Inspection and Maintenance — GEK 107048 1/1000 1/100 1/10 Starts/Fired Hour Figure 1-3. Effect of Starts TYPE OF 8-HOUR INSPECTION SHIFTS Combustion Hot Gas Path Major Assumptions No Repair Time — Replacement Only All Parts Available All Necessary Tools Available Crew With Average Trade Skill Flange-To-Flange Turbine Only Inspection Has Been Pre-Planned...
  • Page 23: Types Of Shutdown Inspections

    Major Inspection Hot Gas Path Inspection Combustion Inspection 1214 0706 1502 1625 0703 0804 1612 0812 0801 1121 0701 0710 0513 1403 0802 1402 1302 0811 0702 1401 1301 0803 1409 0546 1314 1319 1313 Compressor Turbine Exhaust Combustion Inlet 0901 1604 Figure 1-5.
  • Page 24 Introduction Inspection and Maintenance — GEK 107048 1. Set vanes to the full open position 2. Set up dial indicator to measure motion normal to the vane cord. Position the indicator to read as close to the vane inner button as possible.
  • Page 25 INSERT STANDARD PRACTICES...
  • Page 27 Reformated, September 1991 GENERAL At all times when performing work on a GE Gas Turbine the following general practices should be observed: 1. Keep complete records. In addition to specific inspection report forms called out, please complete the general information requested on Forms PGS/GT-FF-6000, PGS/GT-FF-6026, and PGS/ GT-FF-6027.
  • Page 28 Standard Practices Inspection and Maintenance 5. Clean all removed parts, and fasteners and store in separate containers, tagged to simplify reassemb- ly. (See Gas Turbine Cleaning in this section for cleaning methods.) 6. Use penetrating oil prior to bolt removal. (Refer to recommended solvents, sealers, cleaners, etc. in this section for listing of acceptable penetrating oils.) 7.
  • Page 29 Inspection and Maintenance Standard Practices d. The use of taper gauges is not recommended because the pointed end of the gauge often “bot- toms” on an internal curved surface before an accurate reading can be obtained. This gauge should not be used to take radial clearances. e.
  • Page 30 Standard Practices Inspection and Maintenance (2) Instant Seal Locktite Plastic Gasket shall be used on all bolted oil to air joints (vertical and horizontal) that are not gasketed and on plug openings. This includes, but is not limited to, bearing housings, continuously lubricated coupling guards and stationary oil seals. Instant Seal Locktite Plastic Gasket shall not be used on vertical joints of non-bolted stationary oil seals.
  • Page 31: Typical Flange Joint Makeup

    Inspection and Maintenance Standard Practices Table 2-1 Torque Values for Bolts and Studs Bolt, Nut, and Stud Material Specified on GE Drawings is Identified as Follows: SAE Gr. 8 B50A125E B5F5B3 C1A5 NOM DIA IN - LB FT - LB...
  • Page 32 Standard Practices Inspection and Maintenance Table 2-2 Bolt and Stud Elongation Values BOLT OR STUD IN BLIND HOLE ELONGATION OF APPROX. THICK- BOLT OR STUD AF- NESS OF JOINT “A” TER TIGHTENING 1.50 0.0022–0.0017 ANGLE OF 2.00 0.0030–0.0023 ELONGATION ROT. 2.50 0.0037–0.0030 0.001...
  • Page 33 GE Company normally supplies lubricants, solvents, and sealants as part of the loose parts for turbine installa- tion. The listing below includes special items recommended for use during maintenance operations. All may be procured locally or from the manufacturer.
  • Page 34 Standard Practices Inspection and Maintenance NAME DESCRIPTION OR APPLICATION REFERENCE Thinner Carboline 33 Exhaust system paint thinner for CarboZinc 11 Carboline Co. Grey. 32 Hanley Ct. St. Louis, Mo. 63122 Primer Carbo Zinc Grey Exhaust system paint. Carboline Co. 32 Hanley Ct. St.
  • Page 35 Grade Z-80 Anti-Seize Compound, High Temperature GE Company Design Engineering and Materials Engineering has evaluated Fel-Pro C-102, Nickel-Ease, N5000 (Fel Pro products) and Teutonic Power Tool’s 0505 as acceptable anti-seize compounds. Although the four compounds listed above are recommended, use of any other anti-seize compounds is acceptable provided they meet the guidelines given in Table 2-3.
  • Page 36 GE Company. The use of lubricant grades other than those recommended, should be first approved by the GE Company.
  • Page 37 The list may be modified as dictated by availability. The special tools required are provided by the GE Company and are itemized in a tool list in the Parts Volume of this Service Manual.
  • Page 38 Standard Practices Inspection and Maintenance (1) 7-pound sledge (1) 14-pound sledge Mallet — plastic, rawhide Pry bars (2) 18-inch foot bars (2) 6-foot pry bars Carpenter’s level Wood saw 2 Hacksaws with extra blades Portapower — hydraulic jack set (1) 10-foot measuring tape Hand stones 4 coarse 4 fine...
  • Page 39 Inspection and Maintenance Standard Practices (1) 12-inch and (1) 18-inch machinist’s scale Mobile crane 50 tons at 25 feet radius — 45 feet high (71F unit RTR) 10 tons at 25 feet radius — 45 feet high from ground (U.H. turbine casing) Helicoil insertion tools Engine-driven air compressor 90 psi with sufficient volume to drive impact wrenches...
  • Page 40 Standard Practices Inspection and Maintenance Wood blocking 10 pieces 2 6 ft 10 pieces 4 6 ft Rope 100 ft of in. diameter 100 ft of in. diameter Expendables — See Recommended Solvents, Sealants, Cleaners, etc., in this section. 10 lb anti-seize 13 cans joint compound 3 rolls masking tape 6 rolls duct tape...
  • Page 41: Special Tools

    Inspection and Maintenance — GEK 107048 Standard Practices Special Tools — Typical for MS-6001B Gas Turbine with DLN-1 Note: Refer to the Tool Lists, line items A033 and 0104, in the Parts Volume Service Manual for list of tools furnished for your unit(s).
  • Page 42 Standard Practices Inspection and Maintenance — GEK 107048 Tool Name Application Quantity Figure Tool, Transition Piece Measure Transition Piece to First-Stage 2-12 Go/No — Go Gauge Nozzle Retaining Ring clearances Alignment Fixture For Aligning Accessory Gear to Turbine 2-13 Fuel Nozzle Staking Tool Stake Lockplate to Fuel Nozzle Body and 2-14 Outer Tip...
  • Page 43 Inspection and Maintenance — GEK 107048 Standard Practices Tool Name Application Quantity Figure Shackle, Anchor Used for Lifting Inlet Duct Components 2-33 Charging Hose Assembly Used for Checking and Charging Hydraulic 2-34 and Precharging Gauge Accumulators Device Plate, Flushing Assembly Used for Flushing Hydraulic Control Oil 2-35 Lines...
  • Page 44 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-2. Guide Pin Inlet Casing. Figure 2-3. Guide Pin Compressor Casing. SP-18...
  • Page 45 Inspection and Maintenance — GEK 107048 Standard Practices Figure 2-4. Guide Pin Bearings and Exhaust Frame. Figure 2-5. Guide Pin Compressor Discharge and Turbine Casing. SP-19...
  • Page 46 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-6. Typical Jacking Bolt, Unit Casings. Figure 2-7. Jacking Rod, Number Two Bearing Disassembly. SP-20...
  • Page 47 Figure 2-8. Fixture Arrangement, Number Two Bearing and Coupling.
  • Page 48 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-9. Fuel Nozzle Wrenches. .750–10Unc 2A .750–10Unc 2A Figure 2-10. Tool, Alignment Pin. SP-22...
  • Page 49 Inspection and Maintenance — GEK 107048 Standard Practices Approx. 0.53 0.36 0.200 Figure 2-11. Tool, Transition Piece Side Clearance. Approx. 5 3/16 thru Hole .160 .090 70 .200 TYP. Figure 2-12. Tool, Transition Piece, First Stage Nozzle. SP-23...
  • Page 50 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-13. Alignment Fixture. Figure 2-14. Staking Tool, Fuel Nozzle. SP-24...
  • Page 51 Inspection and Maintenance — GEK 107048 Standard Practices Jacking Bolt (typ. 3 plc’s) Figure 2-15. Combustion Liner Puller. SP-25...
  • Page 52 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-16. Rail Fabrication, Hoist. Figure 2-17. Lifting Beam. SP-26...
  • Page 53 Inspection and Maintenance — GEK 107048 Standard Practices Figure 2-18. Cable Sling. Figure 2-19. Trolley Hoist. SP-27...
  • Page 54 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-20. Typical Anchor Shackle. Figure 2-21. Clevis Hook, Foundry. SP-28...
  • Page 55 Inspection and Maintenance — GEK 107048 Standard Practices Figure 2-22. Ratchet Gear Come-Along. Figure 2-23. Connection Link. SP-29...
  • Page 56 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-24. Clevis Hook, Grab. Figure 2-25. Chain Sling. SP-30...
  • Page 57 Figure 2-26. Rail Fabrication, Hoist.
  • Page 58 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-27. Pulley Nozzle Segments. SP-32...
  • Page 59 Figure 2-28. Typical Borescope Kit.
  • Page 60 Figure 2-29. Rail Channel, Trolley.
  • Page 61 Figure 2-30. Lifting Beam, Inlet Silencer.
  • Page 62 Figure 2-31. Lifting Beam, Inlet Transition.
  • Page 63 Figure 2-32. Lifting Beam, Inlet Elbow.
  • Page 64 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-33. Typical Anchor Shackle. Figure 2-34. Typical Accumulator Charging Equipment. SP-38...
  • Page 65 Inspection and Maintenance — GEK 107048 Standard Practices Figure 2-35. Flushing Block, Servo Valves. Figure 2-36. Hose Clamp Pliers. Figure 2-37. Insertion and Extraction Tool. SP-39...
  • Page 66 Standard Practices Inspection and Maintenance — GEK 107048 Figure 2-38. Tubing, Insert and Male Connector. SP-40...
  • Page 67 Standard Practices ORDERING RENEWAL PARTS; REPAIR, AND REPLACEMENT PARTS Spare and renewal parts orders for GE turbine parts should be placed with your GE Company Apparatus & Engineering Services Operations office. Those components identified in the Parts Volume of your Service Manual with a Proprietary Design statement are considered critical in design, have an affect on unit longevity and may impair warranties.
  • Page 68 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 Combustion Inspection Recommended Spare Parts Note: Refer to your Parts Volume Service Manual to obtain the proper draw- ing and/or part number for the material listed under each arrangement or assembly drawing.
  • Page 69 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Combustion Inspection Recommended Spare Parts (Cont’d) Recommended Quantity COMBUSTION CHAMBER ARRANGEMENT (ML0701) (Cont’d) **11. Ring, Gasket (Secondary Fuel Nozzle Mounting Flange) Bolt, Hex Head (Fuel Nozzle Flange) *16* **13. Gasket, Pipe Flange (Flame Detector) **14.
  • Page 70 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — Combustion Inspection Recommended Spare Parts (Cont’d) Recommended Quantity PIPING ARRANGEMENT PRIMARY FUEL GAS (ML0911) (If Applicable To Unit) **1. Gasket (Gas Line Flange to Fuel Nozzle) **2. Gasket (Gas Line Flange to Gas Manifold Flange)
  • Page 71 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Combustion Inspection Recommended Spare Parts (Cont’d) Recommended Quantity PIPING ARRANGEMENT COOLING AND SEALING AIR (ML0909) (Cont’d) Connector, Male Connector, Male Connector, Tube Female Elbow, Union Elbow, Union Elbow, Union...
  • Page 72 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — Hot Gas Path Inspection Recommended Spare Parts (Cont’d) Recommended Quantity PRIMARY FUEL NOZZLE ASSEMBLY (ML0513) (Cont’d) **2. Lockplate (Tip Assembly to Body) SECONDARY FUEL NOZZLE ASSEMBLY (ML0566) Outer Gas Tip **2.
  • Page 73 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Hot Gas Path Inspection Recommended Spare Parts (Cont’d) Recommended Quantity TRANSITION PIECE ARRANGEMENT COMBUSTION (ML0717) Seal, Aft-Side, Combustion Transition Piece **2. Bolt, Shoulder (Transition Piece Aft Mounting Bracket) **3.
  • Page 74 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — Hot Gas Path Inspection Recommended Spare Parts (Cont’d) Recommended Quantity PIPING ARRANGEMENT PRIMARY FUEL GAS (ML0911) (If Applicable To Unit) **1. Gasket (Gas Line Flange to Fuel Nozzle) **2.
  • Page 75 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Hot Gas Path Inspection Recommended Spare Parts (Cont’d) Recommended Quantity PIPING ARRANGEMENT COOLING AND SEALING AIR (ML0909) (Cont’d) Union Tube Union, Tube Union, Tube Tee, Union Tube Nut, Self Locking...
  • Page 76 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — Hot Gas Path Inspection Recommended Spare Parts (Cont’d) Recommended Quantity BOLTING AND DOWELING ARRANGEMENT (ML1604) (Cont’d) Nut, Twelve Point (Compressor Discharge Casing to Turbine Casing) Casing) Bolt, Twelve Point Head (Turbine Casing to Exhaust Frame) Note: The above quantities cover approximately 20% of the top half casings bolting requirements only.
  • Page 77 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity PRIMARY FUEL NOZZLE ASSEMBLY (ML0513) (Cont’d) **2. Lockplate (Tip Assembly to Body) SECONDARY FUEL NOZZLE ASSEMBLY (ML0566) Outer Gas Tip **2.
  • Page 78 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity COMBUSTION CHAMBER ARRANGEMENT (ML0701) (Cont’d) Bolt, 12 Point (Spark Plug) TRANSITION PIECE ARRANGEMENT COMBUSTION (ML0717) Seal, Aft-Side, Combustion Transition Piece **2.
  • Page 79 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity PIPING ARRANGEMENT PRIMARY FUEL GAS (ML0911) (If Applicable To Unit) **1. Gasket (Gas Line Flange to Fuel Nozzle) **2. Gasket (Gas Line Flange to Gas Manifold Flange)
  • Page 80 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity PIPING ARRANGEMENT COOLING & SEALING AIR (ML0909) (Cont’d) Union, Tube Union, Tube Union, Tube Tee, Union Tube Nut, Self Locking Nut, Self Locking...
  • Page 81 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity BEARING NO. 2 ASSEMBLY (ML1502) (Cont’d) Deflector, forward Bearing No. 2 Seal, Stationary Oil, Bearing No. 2 Pin, Anti-Rotation, Seal Pin, Anti-Rotation, Seal...
  • Page 82 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity DUCTING AND PLENUM ARRANGEMENT INLET (ML1612, A041) (Cont’d) **5. Gasket, Access Cover Plate (Plenum Arrangement) **6. Gasket, Duct Inlet **7. Gasket, Duct Inlet **8.
  • Page 83 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity ENCLOSURE TO BASE ARRANGEMENT (ML1605) Note: The list of gaskets, nuts and bolts shown below with varying quantities, indicates that there are different sizes required. Using the applicable...
  • Page 84 Standard Practices Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity ENCLOSURE TO BASE ARRANGEMENT (ML1605) (Cont’d) Washer, Plain Wide *12* Lockwasher, Spring *13* Bolt, Hex Head Nut, Hexagon Bolt, Hex Head...
  • Page 85 Inspection and Maintenance — GEK 107048 Standard Practices MS-6001B DLN-1 — Major Inspection Recommended Spare Parts (Cont’d) Recommended Quantity BOLTING & DOWELING DRAWING (ML1604) (Cont’d) Nut, Twelve Point (Compressor Discharge Casing to Turbine Casing) Bolt, Twelve Point (Turbine Casing to Exhaust Frame) Note: The above quantities cover approximately 20% of the top half casings bolting requirements only.
  • Page 86 Standard Practices Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK. SP-60...
  • Page 87 INSERT AUXILIARY & CONTROLS SYSTEMS MAINTENANCE...
  • Page 89 GE Power Systems Gas Turbine Auxiliary and Controls Systems Maintenance CONTENTS (PERIODIC INSPECTION SCHEDULE) General ............
  • Page 90 Auxiliary and Controls Systems Maintenance Inspection and Maintenance THIS PAGE INTENTIONALLY LEFT BLANK.
  • Page 91 GE Power Systems Gas Turbine Auxiliary and Controls Systems Maintenance Reformated, September 1991 GENERAL The maintenance procedures recommended in this section apply to a typical package power plant installation and do not pertain to any particular plant equipment model. This section is subdivided into two subsections: the Periodic Inspection Schedule followed by Inspection and Maintenance Procedures.
  • Page 92 Service Manual. It is our intent that these instructions, with the help of a GE Field Service Representative, be used as an aid in the preparation of an individual maintenance program for each purchaser.
  • Page 93 Inspection and Maintenance Auxiliary and Controls Systems Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference Vibration Detectors IMP–1 Stable Reading D — O Mounting Secure A — S Liquid Level Indicators IMP–2 Reading in Error D —...
  • Page 94 Auxiliary and Controls Systems Maintenance Inspection and Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference Strainers, SA — S Gas/Liquid Dirt, Scale Filters, Lube and Fuel IMP–4 15 psi (1.03 bars) Maximum P D —...
  • Page 95 Inspection and Maintenance Auxiliary and Controls Systems Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference Motor and Pump Couplings IMP–7 Loose Bolts and Grease Plugs A — S Evidence of Wear A — S UNIT PIPING SYSTEMS (Fuel, Oil, Air, Water) Piping IMP–7...
  • Page 96 Auxiliary and Controls Systems Maintenance Inspection and Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference Mist Eliminator IMP–8 (If Applicable) Excessive Pressure Drop Across Unit M — O Oil Vapor Leakage M — O Dirty Filter Element M —...
  • Page 97 Inspection and Maintenance Auxiliary and Controls Systems Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference Cooling Water Radiator Fan Dirty Wheel Housing, Ducts and IMP–11 Module Screens A — S Excessive Vibration Noise A —...
  • Page 98 Auxiliary and Controls Systems Maintenance Inspection and Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference FUEL GAS SYSTEM (if applicable) Gas Control Valve IMP–13 Gas Leakage at Stem, Packing Leak Off or Vent M —...
  • Page 99 Inspection and Maintenance Auxiliary and Controls Systems Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference Accumulator IMP–14 Precharge Pressure A — S Accumulator Safety Disc A — S Hydraulic System Piping Leaking Pipe Connections (All Other Units) HGP —...
  • Page 100 Auxiliary and Controls Systems Maintenance Inspection and Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference Starting Clutch IMP–16 Improper Clearance of Clutch Jaws at SA — S Engaged and Disengaged Positions Improper Operation of Limit Switch SA —...
  • Page 101 Inspection and Maintenance Auxiliary and Controls Systems Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference Ventilation Dampers Operate Freely A — S and are not Obstructed SPEEDTRONIC CONTROL SYSTEMS (Refer to Control Systems Tab in the Operators Manual) Control Specifications, Control System Settings Control Specification –...
  • Page 102 Auxiliary and Controls Systems Maintenance Inspection and Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference General Purpose Contactors IMP–31 A — S Damaged Arc Chute A — S Improper Arcing Horn Clearances A — S Improper Armature Spring Adjustment A —...
  • Page 103 Inspection and Maintenance Auxiliary and Controls Systems Maintenance Inspection Document Frequency and or Page Inspection What to Inspect for Turbine Status Reference INLET SYSTEMS (TURBINE) Inlet Screen IMP–32 M — O Obstructions Bypass Door IMP–34 Proper Seal M — O Limit Switch Operation A —...
  • Page 104 Auxiliary and Controls Systems Maintenance Inspection and Maintenance THIS PAGE INTENTIONALLY LEFT BLANK. ACSM–14...
  • Page 105 GE Power Systems Gas Turbine Inspection and Maintenance Procedures CONTENTS Standard Maintenance Items ........
  • Page 106 Inspection and Maintenance Procedures Inspection and Maintenance THIS PAGE INTENTIONALLY LEFT BLANK. I–2...
  • Page 107: Standard Maintenance Items

    GE Power Systems Gas Turbine Inspection and Maintenance Procedures Reformated, September 1991 STANDARD MAINTENANCE ITEMS Pressure Switches and Gauges The setting of pressure switches and calibration of the gauges can be checked with a dead weight tester, a regulated source of clean, dry, compressed air or a nitrogen cylinder and a calibrated pressure gauge.
  • Page 108: Control Devices

    Temperature switches are pretested, set, and locked in the factory. If trouble is experienced in the field, new pretested and set switches should be ordered. Faulty switches should be returned to the GE Compa- ny for evaluation. These switches should not be tested, adjusted, or reset in the field unless a special Fen- wal Test Kit, Model 80001-0, is available since the settings require close tolerances.
  • Page 109 Inspection and Maintenance Inspection and Maintenance Procedures the control pressure required for that particular valve. Backpressure-regulated valves are preset at the factory and should require no adjustment for normal operation. In most applications, the valve stem is exposed to view, so valve movement can be checked visually or with a dial indicator. For valves that do not have an exposed stem, the valve setting is best accomplished with the valve removed from the stem.
  • Page 110: Hydraulic/Mechanical Equipment

    Inspection and Maintenance Procedures Inspection and Maintenance from that given on the valve nameplate, the valve sensing element may have been improperly assembled into its well or have an improper charge of sensing fluid. The element could be defective, or there may be too much friction in the valve mechanism. Sensing bulbs are marked “TOP”...
  • Page 111 Inspection and Maintenance Inspection and Maintenance Procedures With lock washers installed, verify that the servovalve mounting screws are long enough to provide 1 to 1.5 times the screw diameter of thread engagement. If longer servovalve mounting screws are required to meet minimum thread engagement, verify that the replacement screw does not bottom in the threaded hole.
  • Page 112: Heating, Cooling And Ventilation

    Inspection and Maintenance Procedures Inspection and Maintenance Air Filters (Air Extraction Valve) Open the filter petcock and drain off all moisture accumulation. If the amount of moisture appears to be excessive it is suggested that the petcock can be left cracked open for a continuous bleed or the fre- quency of the blowdown inspection be increased.
  • Page 113: Couplings

    Inspection and Maintenance Inspection and Maintenance Procedures AC Motors Examine the collector rings, brushes, brush holders and studs for cleanliness and wear. Collector rings should maintain their polished surface. Brushes should move freely within their holders, but set firmly in contact with the collector rings. Be sure the pigtail conductors are securely fastened to the brush hold- ers.
  • Page 114 If an exchanger tube should develop a leak, it may be possible to plug the tube in the heat exchanger and continue using the bundle. Consult GE for information concerning how many tubes may be plugged in a given heat exchanger and still have the heat exchanger perform satisfactorily in gas turbine service.
  • Page 115: Cooling Water System

    Inspection and Maintenance Inspection and Maintenance Procedures Pipe Couplings Check the couplings for oil leakage due to aging and heat. Replace seals as needed. Lubricate seals prior to each assembly of seals. COOLING WATER SYSTEM Cooling System Checks Cooling system fouling, with consequent performance degradation, must be checked periodically, even though the system is properly rust inhibited.
  • Page 116 Inspection and Maintenance Procedures Inspection and Maintenance Use of a mercury manometer is not recommended. Mercury will react destructively with copper and brass in system components under certain conditions, if it were accidentally injected into the cooling water system. Flow Versus Pressure Drop Water (or coolant) flow versus pressure drop curves may be prepared for any orifice* size by using the equation: Q + 300KA...
  • Page 117: Fuel Gas System

    Inspection and Maintenance Inspection and Maintenance Procedures Cooling Water Pump Check the pump for seal leakage either when running or stopped. Leakage is usually visible along the pump shaft and/or from the drain port on the seal mounting flange. If there is unusual leakage, it is an indication that foreign material has become lodged between the faces of the seal.
  • Page 118: High Pressure Control Oil System - Hydraulic Supply

    Inspection and Maintenance Procedures Inspection and Maintenance For additional information on the fuel gas stop ratio and control valve, refer to the Service Manual under the Fuel System tab. HIGH PRESSURE CONTROL OIL SYSTEM — HYDRAULIC SUPPLY Main Hydraulic Supply Pump Visually inspect the pump for seal leakage at the shaft and mounting flange.
  • Page 119: Cooling And Sealing Air System

    Inspection and Maintenance Inspection and Maintenance Procedures auxiliary hydraulic pump, without properly charged accumulators in service, may result in unnecessary hydraulic hammer and possible system damage. COOLING AND SEALING AIR SYSTEM General Notes Loss of cooling air to various parts of the machine may cause hot wheel spaces, insufficient shell cooling or reduction in bearing sealing air pressure.
  • Page 120: Fire Protection System

    Inspection and Maintenance Procedures Inspection and Maintenance Starting Clutch Visually inspect the spline and clutch jaws for signs of uneven wear, nicks, burrs, or other physical dam- age. Inspect the hydraulic cylinders for leakage. Inspect the linkage, pins and hardware for security. Check the clearances of the clutch jaws in the en- gaged and disengaged positions.
  • Page 121 Inspection and Maintenance Inspection and Maintenance Procedures System Package Lagging The joints in the lagging panels, roof, doors, and base should be inspected for tightness. If the joints are not tight, the loss of medium will be too great to be replenished. The concentration will not buildup inside the compartments to the required value.
  • Page 122 Inspection and Maintenance Procedures Inspection and Maintenance CAUTION Any physical damage to fire detectors such as but not lim- ited to distortion, dents, twisting will cause the fire detec- tors to loose their calibration and serviceability. If any physical damage is found on the fire detectors they should be replaced.
  • Page 123 Inspection and Maintenance Inspection and Maintenance Procedures Two separate tests are necessary to ensure that the low-pressure CO system is ready for operation. These are (1) the electric release test and (2) the “puff” test. Electric Release Test Check the wiring in the circuit by short-circuiting each fire detector in turn. Each time this is done, solenoid valve 45CR should energize.
  • Page 124: Temperature Control

    Inspection and Maintenance Procedures Inspection and Maintenance CAUTION Ventilation dampers, automatically closed by a signal from the fire protection system, must be re-opened before re-starting the turbine. Failure to do so will shorten the ser- vice life of the starting motor and reduce generator perfor- mance.
  • Page 125: Flame Detection And Protection System

    Consult with a GE Company field representative to obtain recommendations as to the size that an orifice should be increased. After a turbine overhaul, all orifices should be changed back to their original size, assuming that all turbine clearances are returned to normal and all leakage paths are corrected.
  • Page 126: Overspeed Protection System (Electronic)

    Inspection and Maintenance Procedures Inspection and Maintenance CAUTION The sensors are polarity sensitive. Reverse polarity will destroy the detector!!! 1. With the detector amplifier power on, verify base wir- ing polarity at the sensor junction box by reading 290 VDC (min.) across lead pair. 2.
  • Page 127 Inspection and Maintenance Inspection and Maintenance Procedures be maintained at 50 percent or less to minimize any possible corrosion problems. Conformal coatings are used to protect electronic equipment; however, high relative humidity can cause accelerated corro- sion in any area not properly protected. Refer to SPEEDTRONIC Maintenance Manual Procedures in Volume I.
  • Page 128: Battery System

    Inspection and Maintenance Procedures Inspection and Maintenance This arc is extinguished when the contacts are fully open. However, it may be established and extin- guished several times due to contact bounce. The arc may be a glow discharge, or even a small metal- lic bridge, which becomes hot enough to vaporize a small portion of the contact metal.
  • Page 129: Generators

    Inspection and Maintenance Inspection and Maintenance Procedures Magnetic Contactors and Starters Check to see if the relay contacts are welded together by depressing the brown operator (actuator), located at the top of the overload relay contact housing. When the relay is in a reset condition, an audible click will be heard when the operator is depressed.
  • Page 130: Inlet Air Systems Maintenance And System Equipment (Gas Turbine)

    Inspection and Maintenance Procedures Inspection and Maintenance INLET AIR SYSTEMS MAINTENANCE AND SYSTEM EQUIPMENT (GAS TURBINE) Inlet Screen Inlet screens are provided immediately upstream of the inertial separators to prevent the entry of birds, leaves, twigs, papers and other similar objects. These screens must be kept free from any excess accumu- lation of such debris to assure free air flow.
  • Page 131 Inspection and Maintenance Inspection and Maintenance Procedures The inlet ductwork and silencer should be inspected at least once a year for leakage or any entrapped material. Leaks can be sealed with an appropriate caulking compound. Entrapped material should be removed to prevent possible foreign object damage. Any rust or oxidation spots on other than Cor-Ten material should be scraped and repainted.
  • Page 132 Inspection and Maintenance Procedures Inspection and Maintenance THIS PAGE INTENTIONALLY LEFT BLANK. IMP–26...
  • Page 133 INSERT SCHEDULED TURBINE MAINTENACE...
  • Page 135 GE Power Systems Gas Turbine Scheduled Turbine Maintenance Reformated, September 1991 RUNNING INSPECTIONS Running inspections consist of observations made while a unit is in service. The turbine should be observed on a programmed schedule which should be established as part of the unit maintenance program consistent with the operator’s requirements.
  • Page 136 Scheduled Turbine Maintenance Inspection and Maintenance — GEK 107048 Turbine Compartment **WARNING** Observe all safety notices when occupying the turbine compartment. 1. Observe both ac and dc compartment lighting systems. Replace burned out bulbs. 2. Inspect the following items for leakage of air, exhaust, lube oil, fuel or water. a.
  • Page 137 Inspection and Maintenance — GEK 107048 Scheduled Turbine Maintenance 5. Note loose or vibrating piping conduit, or other fittings, and schedule repairs if necessary. 6. Check faces of clutch for cleanliness or possible damage. Clean or schedule maintenance as appro- priate.
  • Page 138 Scheduled Turbine Maintenance Inspection and Maintenance — GEK 107048 Operating data should be recorded to permit an evaluation of the equipment performance and maintenance requirements. Data should be recorded after the gas turbine has reached steady-state at each load condi- tion.
  • Page 139 Inspection and Maintenance — GEK 107048 Scheduled Turbine Maintenance MS-6001B DLN-1 Operating Data Data is to be recorded at 1/4, 1/2, 3/4 and full load. On dual-fuel units, this data should be recorded for both fuels. (1/4) (1/2) (3/4) Full Load...
  • Page 140 Scheduled Turbine Maintenance Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — OPERATING DATA (CONT’D) (1/4) (1/2) (3/4) Full Load — TEMPERATURES — ( F) (Cont’d) First-stage aft wheelspace, outer First-stage aft wheelspace, outer Second-stage forward wheelspace, outer Second-stage aft wheelspace,...
  • Page 141 Inspection and Maintenance — GEK 107048 Scheduled Turbine Maintenance MS-6001B DLN-1 — OPERATING DATA (CONT’D) (1/4) (1/2) (3/4) Full Load — TEMPERATURES — ( F) (Cont’d) Turbine exhaust, No. 11 Turbine exhaust, No. 12 Turbine exhaust, No. 13 Turbine exhaust, No. 14 Turbine exhaust, No.
  • Page 142 Scheduled Turbine Maintenance Inspection and Maintenance — GEK 107048 MS-6001B DLN -1 — OPERATING DATA (CONT’D) (1/4) (1/2) (3/4) Full Load — PRESSURES — (PSIG) (Cont’d) Fuel nozzle, No. 1 Fuel nozzle, No. 2 Fuel nozzle, No. 3 Fuel nozzle, No. 4 Fuel nozzle, No.
  • Page 143 Inspection and Maintenance — GEK 107048 Scheduled Turbine Maintenance MS-6001B DLN-1 — OPERATING DATA (CONT’D) (1/4) (1/2) (3/4) Full Load — GENERATOR — Output voltage, 2–3 Output voltage, 3–1 Phase current, 1 Phase current, 2 Phase current, 3 M-vars Field voltage...
  • Page 144 Scheduled Turbine Maintenance Inspection and Maintenance — GEK 107048 MS-6001B DLN-1 — OPERATING DATA (CONT’D) — VIBRATION DATA — (Cont’d) (1/2 Load) (Full Load) Accessory gear, V Accessory gear, A Accessory coupling, gear end Accessory coupling, turbine end Compressor casing, H...
  • Page 145 Inspection and Maintenance — GEK 107048 Scheduled Turbine Maintenance MS-6001B DLN–1 — OPERATING DATA (CONT’D) — CRANKING CHECKS (Final Settings) — (VCE) (Gas Control Valve) (Fuel Pump) Fuel Pump or Gas Valve Stroke Fire Warmup Acceleration Maximum Minimum (Pickup) (Drop Out)
  • Page 146 Inspection and Maintenance — GEK 107048 SPECIAL INSPECTIONS Provisions have been built into the GE MS-6001B heavy duty gas turbines to facilitate the conducting of sever- al special inspection procedures. These special procedures provide for the inspection and measurement of some of the critical internal turbine components without requiring removal of the turbine outer casings.
  • Page 147 Inspection and Maintenance — GEK 107048 Scheduled Turbine Maintenance Areas of Inspection In the hands of a qualified technician, the borescope allows rapid inspection of the following areas with minimum outage time, manpower, and loss of production. 1. Turbine section 2.
  • Page 148 Service Support For Borescope Inspections Your GE Company Field Service Representative can quote and supply technicians and equipment to assist in setting up a program for monitoring machine condition. Such service support also includes engineering evaluation of data and correlation of data with other units in similar application.
  • Page 149 For compressor cleaning see the Water Washing and Cleaning section in this Service Manual. Note: Your GE Company Field Service Representative can supply borescope technicians if assistance is needed in operation of the borescope equip- ment.
  • Page 150 Scheduled Turbine Maintenance Inspection and Maintenance — GEK 107048 Table 4-1 MS-6001B DLN-1 Inspection Criteria Access Area Inspect For Compressor blades Foreign object damage Dirt build up Corrosion Tip erosion Trailing edge thinning Stator blade root erosion Tip clearance Combustion...
  • Page 151 Inspection and Maintenance — GEK 107048 Scheduled Turbine Maintenance Table 4-2 MS-6001B DLN-1 Borescope Access Holes Location *Dimension From Forward Face of Compressor Casing Hole Number Location Discharge Case Flange Thread Size of Holes Seventeenth-stage 1.00-8UNC-2B 18.7 in. (Forward) compressor Combustion liners 3/4 in.
  • Page 152: Borescope Access Hole Locations

    17 3rd Nozzle T/E & 3rd Bkt L/E 3rd Nozzle 2nd jBkt T/E MODEL SERIES 6001 2nd Nozzle L/E & 2nd Bkt. L/E SIMPLE–CYCLE, 2nd Nozzle L/E & 1st Bkt. T/E SINGLE–SHAFT 1st Nozzle T/E & 1st Bkt. L/E HEAVY–DUTY GAS TURBINE BORESCOPE INSPECTION Combustion System...
  • Page 153: Borescope Light Supply

    Figure 4-2. Borescope Light Supply...
  • Page 154: Borescope Probes And Light Supply Connector

    Rigid Probes Light Supply Connector Flexible Probe Figure 4-3. Borescope Probes and Light Supply Connector.
  • Page 155: Scope Support Fixture

    Gas Flow Scope Support Fixture Screwed Into Turbine Shell Figure 4-4. Scope Support Fixture.
  • Page 156: Tv Monitor Presentation

    Scheduled Turbine Maintenance Inspection and Maintenance — GEK 107048 Figure 4-5. TV Monitor Presentation. STM-22...
  • Page 157 INSERT COMBUSTION INSPECTION...
  • Page 159 See Standard Practices section, in this Service Manual. CONTENTS I. Disassembly Procedures For MS-6001B DLN-1 Combustion Systems ....CI-D-1 II. Inspection Procedures For MS-6001B DLN-1 Combustion Systems .
  • Page 160 Combustion Inspection Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK.
  • Page 161 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures I. Disassembly Procedures For MS-6001B DLN-1 Combustion Systems Operation 1 — How to Prepare the Turbine Compartment Roof for Removal 1. Disconnect the blower(s) motor leads, piping flanges and tubing connections at the topside and underside of the roof.
  • Page 162 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Secondary Spark Outer Flame Crossfire Plug Detector Tube Secondary Chamber Flame Number Detectors Spark Plug Primary Gas Secondary Gas Transfer Gas Primary Typ. Flame Ref. Detector Secondary Flame Detector C L Turbine Primary Flame...
  • Page 163 Primary Fuel Nozzle Secondary Flame Detector Cap & Liner Transition Piece Secondary Gas Inlet Transfer Gas Inlet Fuel Nozzle End Cover Combustion Outer Casing Flow Sleeve Figure CI-D.2. Combustion System Components.
  • Page 164 Outer Radial Primary Fuel Gas Mounting Surface Figure CI-D.3. Inside End Cover/Primary Fuel Nozzle.
  • Page 165 Outer Radial Figure CI-D.4. Gas Fuel Nozzle Assembly.
  • Page 166 TOP VIEW Support Bracket Body Floating Seal Picture Forward Frame Support Floating Seal SIDE VIEW Figure CI–D.5. Transition Piece.
  • Page 167 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures Stop Collar Figure CI-D.6. Swagelok Fitting With Stop Collar. 3. Unbolt flame detector flange and remove from combustion casings and secondary fuel nozzles. Operation 5 — How to Remove the Primary Gas Fuel Lines. See Figure CI-D.4.
  • Page 168 False Start Drain Valve Manifold Figure CI-D.7. False Start Drain Piping.
  • Page 169 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures CAUTION Do not use improper size caps or rags to cover pipe open- ings, they may be accidentally pushed inside the piping. Operation 9 — How to Remove the Secondary Fuel Nozzle. See Figure CI-D.8.
  • Page 170 Secondary Flame Detector Flange Secondary Gas Inlet Transfer Gas Inlet Figure CI-D.8. Secondary Fuel Gas Nozzle Assembly.
  • Page 171 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures 1 Plywood With Openings for 10 Nozzles Floor to be Braced and Positioed to Allow for Moving by Forklift Figure CI-D.9. Suggested Storage and Moving Rack for Secondary Fuel Nozzles. CI-D-11...
  • Page 172 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Igniter Assembly Tubine Fitting for Adjustment Packing Igniter Assembly of Insertion Bolt Base Assembly Mounting Bolt Packing Bolt 0.38 Flow Sleeve Casing Flange Liner Ball Joint Packing Figure CI-D.10. Spark Plug Assembly. CI-D-12...
  • Page 173 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures Operation 11 — How to Remove the Eleventh Stage Cooling and Sealing Air Lines 1. Unbolt the upper half 11th-stage cooling and sealing air piping from the bottom flange on the 5th to 11th stage bearing seal valve (VA14, if applicable), the compressor casing and the branch off flange of the compressor bleed valve (VA2-2).
  • Page 174 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 10. The cover should be set face down on blocks large enough to prevent the fuel nozzle faces from touching (four–inch minimum). Another approach would be to bolt the cover to a holding fixture that allows safe handling.
  • Page 175 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures Tapped Holes For Lifting Eye Bolts Guide Pins (3 places) Primary Fuel Nozzles (5) Machined End Cover (Before Cast Figure CI-D.11. End Cover With Primary Nozzles and Guide Pins. Figure CI-D.12.
  • Page 176 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Flow Sleeve Cap & Sealing Outer Liner Ring Tube Split Washer .614 Ref. Inner Tubes Crossfire Packing Outer Tube Spring Casing Casing Retainer Figure CI-D.13. Crossfire Tube Assembly. Crossfire Tube Spring Retainer Figure CI-D.14.
  • Page 177 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures Nut for Jacking Screw Combustion Case Flow Sleeve Liner Stop Opening in Plate Engages Liner Stop Liner View B Liner Stop View B Section A–A Figure CI-D.15. Cap and Liner Removal Tool. CI-D-17...
  • Page 178 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 8. Identify each outer tube, packing gland assembly and bolting according to chamber and location. 9. Discard the ring packings. 10. Remove the remaining combustion liners, inner crossfire tubes and outer tubes by repeating steps 1 through 9.
  • Page 179 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures **WARNING** Each combustion outer casing weighs approximately 550 pounds and should be rigged accordingly to sup- port this weight prior to start of disassembly of the out- er combustion casings. 1.
  • Page 180 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Liner Stop Crossfire/Retainer Boss–Ref. Recess For Flow Sleeve Flange Figure CI-D.16. Combustion Outer Casing CI-D-20...
  • Page 181 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures DOWN Figure CI-D.17. Air Extraction Manifold. CI-D-21...
  • Page 182 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Spark Plug Mounting Boss Stops (3) Typ. Spark Plug PCB Press. Mounting Boss Tap Typ. Flame Detector Mounting Boss Flame Detector Mounting Boss Flame Detector Flame Mounting Boss Detector Mounting Boss False...
  • Page 183 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures either the number ten (10), the number one (1), or the number nine (9) position. Proceed with the following disassembly operation according- 1. Remove the shoulder bolt, lockplate and aft side seal stop from between 1 and 10, 10 and 9 transi- tion pieces.
  • Page 184 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Machine Screws (4 places) Cutout For Liner Stop Cutout For Crossfire Tube Mounting Flange Figure CI-D.19. Flow Sleeve. CI-D-24...
  • Page 185 Inspection and Maintenance — GEK 107048 Combustion Inspection — Disassembly Procedures Stop Seal Assembly Shoulder Lockplate First Stage Nozzle Bolt Retaining Ring Pin in Nozzle Retaining Ring Seal Stop Block Assembly Aft Side Seal Shoulder Bolt Transition Transition Piece Piece Seal, End Figure CI-D.20.
  • Page 186 Combustion Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Aft Bracket Guide Pin Retaining Ring Aft Bkt. Bolts Aft Bkt. Bolts Section A–A Aft Bracket Nozzle Retaining Ring First Stage Transition Nozzle Piece Figure CI-D.21. Transition Piece Lockplating Aft Bracket Bolts. CI-D-26...
  • Page 187 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures II. Inspection Procedures For MS-6001B DLN-1 Combustion Systems Operation 1 — How to Inspect Primary Fuel Nozzles CAUTION It is imperative that any fuel nozzle disassembly, cleaning, inspection, reassembly, testing and reinstalling in unit be performed in accordance with the following procedures.
  • Page 188 Outer Radial Figure CI-I.1. End Cover/Fuel Nozzle Arrangement (Outside).
  • Page 189 Outer Radial Primary Fuel Gas Mounting Surface Figure CI-I.2. End Cover/Fuel Nozzle Arrangement (Inside).
  • Page 190 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Figure CI-I.3. Primary Fuel Nozzle Detail. Inspect and Clean the End Covers 1. Set up cover and blow clean steam (do not add detergent or other cleaners) through the fuel gas and atomizing air passages until they appear to be clear.
  • Page 191 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures Expanded or Perforated Metal Basket, Preferably Aluminum Figure CI-I.4. Fuel Nozzle Cleaning Parts Basket. Steam Water Check Valve Check Valve Insulated Tank Rinse Nozzle Stainless Steel Tank or Double Sink Apprx.
  • Page 192 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 carbon deposits from the body. Such a condition must be corrected before further turbine opera- tion. Record findings on Inspection Form PGS/GT–FF–WS27. 2. Large pieces of face carbon which can be picked or rubbed off with the fingers may be removed. This will shorten the time required in the cleaning tank.
  • Page 193 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures **WARNING** Cleaning solutions are extremely caustic. Wear pro- tective clothing, gloves and face shield to prevent con- tact with skin or eyes. If solution contacts skin or eyes, irrigate thoroughly with clean water and immediately obtain medical aid.
  • Page 194 Parts Lists and Drawings Volume of the Service Manual. 2. If the customer wishes to do this testing, a procedure can be supplied by the GE field representa- tive.
  • Page 195 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures Inspect and Clean the Secondary Fuel Nozzles 1. Inspect parts for major carbon buildup and for plugged slots or orifices prior to cleaning. If oil or water has leaked into any of the gas passages, the resulting deposits must be removed before reas- sembly.
  • Page 196 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Note: At this time, after the transition piece has been torqued and before the gas tip assembly is assembled, the oil gasket leak check described in Fuel Nozzle Testing can be done. Instructions for such a leak test can be obtained from your General Electric Field Service Representative.
  • Page 197 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures Impingement Cooling Ring Venturi Plate Center Body Primary Fuel Nozzle Cup Secondary Swirler Figure CI–I.6. Cap and Liner Details. X–Fire Hole and Collar Cap Assy Nozzle Cup X–Fire Hole and Collar Liner Stop Figure CI–I.7.
  • Page 198 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Seal Flat Area Seal Cracks “A” Detail “A” 11.21 0.02 Spot Weld Cracks “B” Detail “B” Liner Seal Inspection Figure CI–I.8. Combustion Liner Spring Seal Inspection Areas. Liner Stop Combustion Hole Film Cooling Holes Spot Welded...
  • Page 199 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures CAUTION Do not contaminate thermal barrier coating with pene- trant. 5. Figure CI-I.9 shows a typical slot cooled combustion hole and portion of two bands of cooling holes. Areas that should be looked at closely are identified as follows: a.
  • Page 200 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Table CI-2 Inspection Limits, MS-6001B DLN-1 Liners See Figures CI-I.6, CI-I.7, CI-I.8 and CI-I.9 CAUTION The inspection criteria in this Table CI-2 applies to General Electric Company supplied DLN-1 combustion liners only.
  • Page 201 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures Table CI-2 — Continued Inspection Limits, MS-6001B DLN-1 Liners See Figures CI-I.6, CI-I.7 and CI-I.8 CAUTION The inspection criteria in this Table CI-2 applies to General Electric Company supplied DLN-1 combustion liners only.
  • Page 202 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Table CI-2 — Continued Inspection Limits, MS-6001B DLN-1 Liners See Figures CI-I.6, CI-I.7 and CI-I.8 CAUTION The inspection criteria in this Table CI-2 applies to General Electric Company supplied DLN-1 combustion liners only.
  • Page 203 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures Table CI-2 — Continued Inspection Limits, MS-6001B DLN-1 Liners See Figures CI-I.6, CI-I.7 and CI-I.8 CAUTION The inspection criteria in this Table CI-2 applies to General Electric Company supplied DLN-1 combustion liners only.
  • Page 204 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Table CI-3 Inspection Limits, Crossfire Tubes and Retainers CAUTION The inspection criteria in this Table CI-3 applies to General Electric Company supplied crossfire tubes and retainers only. Maximum Acceptable Disposition (For Parts Inspect Limits...
  • Page 205 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures Table CI-4 Inspection Limits, Transition Piece Assembly See Figure CI-I.10 and CI-I.11 CAUTION The inspection criteria in this Table CI-4 applies to General Electric Company supplied transition pieces only. Maximum Acceptable Disposition (For Parts Inspect...
  • Page 206 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Table CI-4 — Continued Inspection Limits, Transition Piece Assembly See Figure CI-I.10 and CI-I.11 CAUTION The inspection criteria in this Table CI-4 applies to General Electric Company supplied transition pieces only. Maximum Acceptable Disposition (For Parts Inspect...
  • Page 207 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures TOP VIEW Support Bracket Body Floating Seal Picture Frame Forward Support Floating Seal SIDE VIEW Figure CI-I.10. Transition Piece. CI-I-21...
  • Page 208 9, 10, 11 & 12 5, 6, 7 & 8 Forward Aft Side Outer Seal Slot VIEW A Left Right A, B, C, D POSITIONS ON AFT BRACKET TO BODY Inner E, F POSITIONS ON AFT BRACKET W, X FORWARD BRACKETS CRACKS &...
  • Page 209 Note: Repair welding procedures will not be described except to note that GTAW (Gas Tungsten Arc Welding) is the only weld repair procedure allowed on MS-6001B transition pieces. It is generally recommended that transition pieces requiring repairs be sent to a qualified General Electric Company Gas Turbine repair facility.
  • Page 210 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Table CI-5 Inspection Limits, for Flow Sleeves See Figure CI-I.12 CAUTION The inspection criteria in this Table CI-5 applies to General Electric Company supplied transition pieces only. Maximum Acceptable Disposition (For Parts Inspect Limits...
  • Page 211 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures Machine Screws Cutout For Liner Stop Cutout For Crossfire Tube Mounting Flange Figure CI–I.12. Flow Sleeve. Liner Stop Crossfire/Retainer Boss–Ref. Recess For Flow Sleeve Flange Figure CI–I.13. Combustion Outer Casing. CI-I-25...
  • Page 212 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 5. When the spark plug is installed on the turbine, follow the assembly instructions on the combustion arrangement drawing and tighten the swagelock fitting at that time. **WARNING** If this gas turbine installation is in a hazardous area as defined National Protection...
  • Page 213 Inspection and Maintenance — GEK 107048 Combustion Inspection — Inspection Procedures Table CI-6 Inspection Limits, Spark Plug CAUTION The inspection criteria in this Table CI-6 applies to General Electric Company supplied transition pieces only. **WARNING** If this gas turbine installation is in a hazardous area as defined National Protection...
  • Page 214 Combustion Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK. CI-I-28...
  • Page 215 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures III. Reassembly Procedures For MS-6001B DLN-1 Combustion Systems Operation 1 — How to Perform Transition Piece Preassembly Inspections and Checks 1. Prior to installation, inspect transition pieces for obvious handling or transportation damage; such as deformed floating seals and pinched end seal slots and damaged inner brackets.
  • Page 216 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Aft Bracket Guide Pin Retaining Ring Aft Bracket Aft Bracket SECTION A–A Bolts Bolts Figure CI–R.1. Transition Piece Aft Bracket Guide Pin Assembly. CI-R-2...
  • Page 217 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures Combustion Liner Transition Piece Flow Sleeve View “A” Front Support Clamp (Bullhorn) Forward Mounting Block “Shim” Compressor Discharge Casing (Typ) Bend at Least Bend at Least Two Tabs Two Tabs Per Assembly Per Assembly VIEW “A”...
  • Page 218 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Note: Torquing procedure; to minimize variations in clamping force of bolt for given torque values, bolts must be torqued backed off, then retorqued. 4. Torque the support clamp (bullhorn) bolts to 33–37 lb. ft. then loosen and remove bolts and lock- plates from the support clamp.
  • Page 219 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures See Enlarged View Picture Frame Between Side Seal Slots 0.53 0.36 Transition Piece Transition Piece ENLARGED VIEW DETAIL Approx. 10 in. 0.53 0.36 See Standard Practice Section 2 Special Tools In This Manual 3/16 in.
  • Page 220 Compressor Discharge Casing Carpenters Square Measure “A” at Four Locations For Each Transition Piece. Location as shown Per Sketch at Right. Transition Piece VIEW LOOKING AFT NOTE: Measurements Are to Be Taken with Aft Bracket Bolts (s) Tight Two Scales Or Rulers Measure “B”...
  • Page 221 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures “A” “A” Contact Required on “A” Surfaces When Transition Piece is in Proper Alignment Figure CI-R.5. Transition Piece Support Clamp (Bullhorn) Assembly Checks. CI-R-7...
  • Page 222 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 CAUTION If the spacing between adjacent transition pieces or the support clamp loading requirements cannot be achieved further assembly should not be attempted until the cause is resolved. It is recommended that your General Electric Company Field Service Representative be consulted for recommended action to resolve the problem.
  • Page 223 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures 0.090 0.160 3(X) (X)2 4(X) 5(X) (X)1 (X)6 0.090 0.160 Transition Nozzle Piece Approx. 5 in. 3/16 in. Thru Hole 0.160 0.090 1.0 in. See Standard Practice Section 2 Special Tools in This Manual 0.200 Typ.
  • Page 224 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Aft Bracket Guide Pin Retaining Ring Section A–A Aft Bracket Aft Bracket Bolts Bolts Aft Bracket Nozzle Retaining Ring 0.090 0.160 0.090 0.160 First Stage Transition Nozzle Piece Figure CI-R.7. Transition Piece Lockplating Aft Bracket Bolts. CI-R-10...
  • Page 225 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures Bend at Least Two Tabs After Torquing Bolt Stop Seal Assembly Lockplate Shoulder First Stage Nozzle Bolt Retaining Ring Pin in Nozzle Seal Stop Retaining Ring Block Assembly Aft Side Seal Shoulder Bolt...
  • Page 226 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Cutout For Liner Stop Flame Detector Hole (1) Spark Plug Cutout Cutout For Crossfire Tube Figure CI–R.9. Combustion Flow Sleeve. Casing Bolts (20) Machine Screws (4) Outer Casing Flow Sleeve Figure CI–R.10.
  • Page 227 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures 3.62 in. 9/16 in. 0.75 in. 1.75 in. 0.75 in. 0.730 in. 0.867 in. dia. 0.670 in. 0.863 in. 0.62 in. dial 0.61 in. 0.750-10 UNC 2A 0.750-10 UNC 2A Figure CI–R.11.
  • Page 228 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 5. Tighten bolts until the gap between the boss and the seal ring is 0.080 0.015 all the way around the boss. This ensures the proper compression on the packing rings. Operation 5 —...
  • Page 229 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures Flow Sleeve Sealing Ring Split Outer Washer Tube Packing Outer Casing Figure CI–R.12. Outer Crossfire Tube. CI-R-15...
  • Page 230 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Flow Sleeve Cap & Sealing Outer Liner Ring Tube Split Washer .614 Ref. Inner Tubes Crossfire Packing Outer Tube Retainer Casing Casing Spring Figure CI-R.13. Crossfire Tube Assembly. CI-R-16...
  • Page 231 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures Igniter Assembly Tubine Fitting for Adjustment Packing Igniter Assembly of Insertion Bolt Base Assembly Mounting Bolt Packing Bolt 0.38 Flow Sleeve Casing Flange Liner Ball Joint Packing Figure CI–R.14. Spark Plug Assembly. CI-R-17...
  • Page 232 Flame Detector Assy (Right Hand) Water Conns (2) Ref. Existing Liner Mixing Holes (S) Sight Line Flow Sleeve Sight Line Flow Sleeve Liner Case Outer Liner Figure CI–R.15. Primary Flame Detector.
  • Page 233 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures 6. Slide a rod down through the support to ensure that there is a clear sight line through the flow sleeve and the combustion liner to one of the primary fuel nozzle cups. 7.
  • Page 234 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Note: Use of grease or some other adhesive will help to retain the gasket in the groove. 2. Carefully insert secondary nozzle through the center hole of the primary fuel nozzle/end cover assembly.
  • Page 235 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures Operation 12 — How to Install the Turbine Casing Blank Cover on Hand Hole Port or the Atomizing Air Extraction Manifold Whichever Applies 1. Install new gasket(s), coat the bolts with Fel Pro C-102 anti-seize compound. 2.
  • Page 236 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 11. Install turbine compartment lagging panels. Operation 16 — How to Perform Cleanup, Visual Inspections and Prestart/Startup Checks 1. Clean up all fuel oil, lube oil and water spills. 2.
  • Page 237 Inspection and Maintenance — GEK 107048 Combustion Inspection — Reassembly Procedures f. Listen for rubbing noises. g. Check temperature of lube oil in bearing drains or at the bearing header and tank. h. Observe all panel and hydraulic manifold pressure gauge readings for abnormalities. i.
  • Page 238 Combustion Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 d. Observe unit vibration readings during coastdown. e. Complete preparation of all inspection, startup and operation data reports. CI-R-24...
  • Page 239 INSERT HOT GAS PATH INSPECTION...
  • Page 241 Reformated, September 1991 CONTENTS I. Disassembly Procedures (Hot Gas Path Inspection) For MS-6001B DLN-1 Equipped Machines ....HGP-D-1 II. Inspection Procedures (Hot Gas Path Inspection) For MS-6001B DLN-1 Equipped Machines .
  • Page 242 Hot Gas Path Inspection Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK.
  • Page 243: Disassembly Procedures (Hot Gas Path Inspection) For Ms-6001B Dln-1 Equipped Machines

    Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures I. Disassembly Procedures (Hot Gas Path Inspection) For MS-6001B DLN-1 Equipped Machines Operation 1 — Perform Combustion Inspection Disassembly Operations Number 1 through Number 15 CAUTION Before proceeding with a combustion inspection ensure that the gas turbine electrical power is tagged-out;...
  • Page 244 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 2. On side exhaust configurations remove any architectural lagging and support members which may interfere with turbine casing removal. Note: Before the removable panel on the forward wall of the units exhaust plenum can be removed, the upper section (right side looking with air flow) of the 11th stage extraction piping and compressor bleed valve (33CB-2) must be removed.
  • Page 245 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Note: It may be necessary to use the hydraulic ratchet to position a random blade tip below the probe holes for the 13th and 17th stage compressor and 1st stage turbine for rotor positioning checks.
  • Page 246 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Adapter Y = Adapter Length X = Casing Thickness Z = Depth Micrometer Reading C = Tip Clearance C = Z– (X+Y) Figure HGP-D.1. Rotor Position Probe. HGP-D-4...
  • Page 247 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Operation 5 — How to Place Mechanical Support Jacks Under Turbine Casing (See Figure HGP-D.2) Note: The base floorplate underneath the compressor and turbine flanges has removeable floorplate cut outs at each location for a mechanical sup- port jack.
  • Page 248 Compressor Exhaust Discharge Turbine Forward Inlet Bell Frame Casing Casing Compressor Casing Compressor Casing Jacking Platform NO. 1 NO. 5 NO. 4 NO. 3 Mechanical Jacks NOTE: Position No. 5 is not Turbine – Flange To Flange Required if Compressor Weight = 91,650 lbs.
  • Page 249 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Operation 6 — How to Remove Turbine Casing Bolts and Upper Half First Stage Nozzle Eccentric Pin 1. Unbolt the upper half circumferential bolting between the turbine casing and exhaust hood. 2.
  • Page 250 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Exhaust Stack Rail Lifting Beam Eehaust Transition Piece Trolley Hoist Spreader Bar Upper Half Turbine Casing (In Lift Position) ROOF LINE Exhaust Plenum (CG) MS6001 Figure HGP-D.3. Turbine Casing Rigging for Removal. HGP-D-8...
  • Page 251 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Inlet Compressor Discharge Turbine Exhaust Casing Casing Casing Casing Frame No. 1 Bearing No. 2 Bearing Lower Half Turbine Casing Guide Guide Upper Half Upper Half Bearing Cap Casing Lower Half Lower Half...
  • Page 252 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 8. Eight 1.75 in.-eight thread jack bolts will be required. Four bolts are to be used for jacking and four to plug the lower half holes. Care must be taken to avoid the bolts crossing the horizontal joint.
  • Page 253 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Operation 8 — How to Take Turbine Clearance Checks 1. It is suggested that turbine clearances be taken under the guidance of your General Electric Com- pany Field Service Representative. The need to closely monitor the internal gas turbine clear- ances is critical.
  • Page 254 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Rotor Float (Thrust Clearance) 1. The maximum total fore and aft movement of the rotor without distorting any of the rotor or bear- ing mounts is usually 14 to 20 mils. Note: The rotor should be against the active thrust bearing but not loaded to deflect the bearing or casings when the indicator is read.
  • Page 255 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures 3. Prepare for and take clearances around the second stage nozzle. a. With the rotor still in the forward position, position the second stage nozzle and diaphragm (left and right) downstream by first wedging a screwdriver in the first stage shroud to second stage nozzle outer sidewall gap.
  • Page 256 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 These Gaps Must Be Closed On Left and Right Sides When Taking 2nd Screwdriver Stage Readings Wooden Wedge Figure HGP-D.5. Loading for Second-Stage Nozzle Clearances. Screwdriver Wooden Wedge These Gaps Must Be Closed On Left and Right Sides...
  • Page 257 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Assure that the third stage nozzle aft outer sidewall hooks are seated downstream in the third stage shroud and the third stage shrouds are seated downstream against the turbine casing. As- sure that the diaphragm forward male hook is seated downstream against the nozzle female hook.
  • Page 258 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 10.00 4.00 2.00 Figure HGP-D.7. Nozzle Clearance Wedging Block. Flat Side of Tooth “A” “A” ‘A’ 1–2 Spacer Downstream Figure HGP-D.8. Set Point “A”. HGP-D-16...
  • Page 259 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Snap Gauge Gives Erroneous Readings Parallel Bar to Span the Radial Distance to the Tooth Flat Figure HGP-D.9. Proper Method for Reading Axial Clearances. “B” “B” ‘B’ 2–3 Spacer Downstream Figure HGP-D.10.
  • Page 260 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 7. Remove the shoulder bolt, lockplate, and aft side seal stop from between 4 and 5 transition pieces. Remove the transition piece aft side seals radially outward. Identify the aft side seals and stop according to transition piece location.
  • Page 261 Nozzle Segment Nos. Looking Downstream Position Numbers Retaining First First Ring Stage Nozzle Retaining Stage Nozzle Ring Nozzle Segment Partition Nozzle Segment Partition Inner Sidewall Support Pad Inner Sidewall and Retainer Take Take Tangential Measurement Measurement Support Pin Here Here Support Ring Support Forward O.D.
  • Page 262 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Use the disassembly procedure applicable to your units configuration. See Figure HGP-D.12. 1. Remove the horizontal joint bolting and clamps from first stage nozzle. Do not remove the joint dowels.
  • Page 263 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures 1.90 Max. Lifting Angle (Welded On Retaining Ring 27 From Vertical Centerline) 2 On Top Half 4 On Lower Half Bolt (1.00–8) Tapped In Lower Half (2 Each Side) Dowel Pin (2 Each Side) Retaining...
  • Page 264 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Operation 15 — How to Remove Lower Half First Stage Nozzle (With Tangential Support Pin) 1. Remove the tangential support bolts and retainer plates. Discard bolts and retainer plates. 2.
  • Page 265 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Nozzle Segment Nozzle Partitions Cooling Air Exit Openings Nozzle Segment Diaphragm Segment Nozzle Partitions Seal Teeth Figure HGP-D.13. Second and Third-Stage Nozzle Segments. HGP-D-23...
  • Page 266 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 CAUTION At all points where the segment and pulling cable come in contact there should be ample padding to distribute the load and protect the partition surfaces. Wood, rubber or padded steel plates can be used.
  • Page 267 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Disassembly Procedures Operation 18 — How to Remove Upper Half Second and Third Stage Nozzle Radial Retaining Pins Note: The second stage nozzle radial retaining pins are secured to the turbine casing by threaded plugs which are screwed into the casing, each plug is staked in two places.
  • Page 268 Hot Gas Path Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK. HGP-D-26...
  • Page 269: Inspection Procedures (Hot Gas Path Inspection) For Ms-6001B Dln-1 Equipped Machines

    Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures II. Inspection Procedures (Hot Gas Path Inspection) For MS-6001B DLN-1 Equipped Machines Operation 1 — Perform Combustion Inspection Procedure Operations Number 1 Through Number 15 and Operations Numbers 17 and 18 Note: Refer to the Combustion Inspection section of this Service Manual for inspection procedures for the following operations.
  • Page 270 Hot Gas Path Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Nozzle Cracking Nozzles experience several thermal gradients during starting as well as high temperatures during loading operation. Such conditions frequently cause nozzle cracking and, in fact, cracking is ex- pected.
  • Page 271 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures Figure HGP-I.1. Nozzle Sidewall Cracks. Figure HGP-I.2. Nozzle Sidewall Cracks. HGP-I-3...
  • Page 272 Hot Gas Path Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Figure HGP-I.3. Figure HGP-I.4. Nozzle Partition Fillet Cracks. Nozzle Partition Fillet Cracks. Figure HGP-I.5. Nozzle Sidewall Surface Cracks. HGP-I-4...
  • Page 273 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures Leading Edge 3.00 Inches 0.50 Inches Figure HGP-I.6. Figure HGP-I.7. Unacceptable Cracks. Unacceptable Crack Propagation. Figure HGP-I.8. Unacceptable Crack Propagation. HGP-I-5...
  • Page 274 Hot Gas Path Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Recommendations 1. First stage nozzles should not be removed for repair except at normal hot gas path inspection inter- vals unless the above guidelines have been exceeded. 2.
  • Page 275 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures All records and questions arising on the subject should be communicated to your General Electric Company Field Service Representative. Bucket deterioration may be classified as cracks, dents, missing metal, and corrosion. Visually inspect the turbine buckets for these abnormalities.
  • Page 276 Hot Gas Path Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Dovetail Cross Section of a Cooling Hole In Bucket Cross Section of Cooling Hole In Bucket Shank Cooling Air Inlet Holes Cooling Holes and Squealer Section Suction Side (Convex) Platform Bucket Shank...
  • Page 277 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures Typical Shrouded Bucket Section 3rd Stage Turbine Bucket Shroud Lock 2nd Stage Turbine Bucket Shank Shank Figure HGP-I.10. Second and Third-Stage Bucket Details. HGP-I-9...
  • Page 278 Hot Gas Path Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 2. Dents — Dents are permissible with the following limits: a. The dent must not contain any cracks per the above paragraph. b. The dent must not obstruct the diameter of, or penetrate into a cooling air hole. The cooling hole closest to the leading edge, should pass a 0.067 in.
  • Page 279 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures Axial Crank Radial Crack 0.50 Inch Inch Leading Edge 0.75 Inch “New” Leading Edge Repair Contour Figure HGP-I.11. First-Stage Bucket Repair Limits. HGP-I-11...
  • Page 280 Hot Gas Path Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 a. Second stage bucket cracks are repairable if located in the outer 20% of the airfoil and up to 0.250 in. in length. See Figure HGP-I.12 Second Stage Bucket Repair Limits. b.
  • Page 281 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures Repairs Allowed In the Outer One-Fifth of the Airfoil Second Stage Inch Smoothly Blended 0.24 Inch Max. Depth 0.25 Inch Cross Hatched Line Shows Portion of Shroud That Mat Be Removed Third Stage 0.35...
  • Page 282 0.700 Inch Nearside Farside Farside Only No Missing Material Allowed Region 0.500 Inch Total Amt of Region Missing Metal Allowed Each Side No Missing Region 0.35 Inch Metal Allowed Region Blending Allowed In This Region Figure HGP-I.13. Radial Seal Pin Groove Repair Limits.
  • Page 283 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures Figure HGP-I.14. Wheelspace Seal Angel Wings Cross Sections. HGP-I-15...
  • Page 284 Metal loss of 1/8 inch or more in any case should be investigated. Note: Contact GE Representative for disposition if blocks are out of limits. HGP-I-16...
  • Page 285 0.35 0.35 Inch Inch Top of Center Section Rework and Metal Removal Is No Rework Is Permitted Which Allowed in the Cross Hatched Areas Penetrates Below the Central Section Figure HGP-I.15. Shroud Tip Rework Limits.
  • Page 286 Figure HGP-I.16. Turbine Shroud Blocks.
  • Page 287 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures Second/Third Stage Shrouds Radial cracks in the shroud seal teeth are self-limiting and are not expected to propagate into the shroud block itself. All unsound portions of the shroud, including circumferential cracks that may link with radial cracks and thinned sections, should be blended back to sound metal and reinspected for further cracking.
  • Page 288 Hot Gas Path Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Figure HGP-I.17. Second-Stage Nozzle and Diaphragm. HGP-I-20...
  • Page 289 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Inspection Procedures Figure HGP-I.18. Third-Stage Nozzle and Diaphragm. HGP-I-21...
  • Page 290 Hot Gas Path Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Inspection Form PGS/GT-FF-6105) is known. Then see if the gaps are within the minimum speci- fied allowance for the worst diaphragm tooth condition. Operation 6 — How to Make First Stage Nozzle Ellipticity Checks Note: Ellipticity is the condition of deviation from a circular form.
  • Page 291: Reassembly Procedures (Hot Gas Path Inspection) For Ms-6001B Dln-1 Equipped Machines

    Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures III. Reassembly Procedures (Hot Gas Path Inspection) For MS-6001B DLN-1 Equipped Machines Operation 1 — How to Install Lower Half First Stage Nozzle and Eccentric Pin (With Support Pad and Retainer) 1.
  • Page 292 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 However, if the nozzle was replaced or adjusted, the following procedure is to be used: 1. Cut the old retaining strap from the top of the eccentric pin heads and grind both surfaces smooth. 2.
  • Page 293 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures First Stage Nozzle Lower Half Section Eccentric Pin Turbine Casing Retaining Strap 0.57 (2 Places) 0.43 0.43 0.33 (4 Places) Fig. F–1 Col. –AE 0.25 (3 Places) Figure HGP-R.1.
  • Page 294 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Note: Check to insure that the groove in the first stage nozzle support ring is clean and there are no burrs on the tongue or in the groove prior to roll- ing in lower half first stage nozzle.
  • Page 295 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures First Stage Universal Nozzle Segment (Typical 18 Places) Retainer Bolt Support Lug and Slot Retainer and Lockplate Forward Flange Support Universal Compressor Nozzle Discharge Casing Support Ring Shim Inner Barrel Retainer Bolt...
  • Page 296 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 d. Coat the top and sides of the retaining strap with Dykem Blue. e. Place the strap, coated side up, on top of the eccentric pin and bolt up with two bolting strap bolts.
  • Page 297 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures seal strip with the notch facing in. Appropriately stake both seals. See Figures HGP-R.3 and HGP-R.4. 4. Lift the nozzle and diaphragm segment on its hook fit and slide it along to its proper position. Install nozzle segments from each horizontal joint to the center of the casing.
  • Page 298 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Nozzle Plug Plug 2nd Stage Retaining Pin 2nd Stage Nozzle Segment (View “A–A”) 1st Stage Turbine Wheel 2nd Stage Wheel 2nd Stage Nozzle Nozzle Diaphragm Forward 1 to 2 Wheel Segment Seal Spacer...
  • Page 299 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures Retaining Pin 2nd Stage Turbine Wheel 3rd Stage Turbine Wheel Holding Plate and Lockplates 3rd Stage (View “A–A”) Nozzle Nozzle Diaphragm Segment Forward Seal 2 Top 3 Wheel Spacer Aft Seal Forward Seal...
  • Page 300 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Operation 4 — How to Install Upper Half First Stage Nozzle (With Support Pad and Retainer) 1. Check that the support pad groove in the first stage nozzle support ring is clean and free from burrs on the tongue or in the groove.
  • Page 301 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures First Stage Nozzle Support Lug First Stage Nozzle With and Support Pad Seal Groove Support Pad and Support Pad Retainer Inner Barrel Compressor Discharge Casing Shim First Stage Nozzle Support Lug Groove First Stage Universal Nozzle Support Ring...
  • Page 302 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 CAUTION Do not stake the forward and aft seals at the horizontal joint. 3. Ensure that the forward seals are bottomed out and that the ends of the aft seals are in contact with the forward seals.
  • Page 303 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures 2. Record all final clearance readings on Inspection Form PGS/GT-FF-6105. Operation 8 — How to Install Transition Pieces Note: Refer to the Combustion Inspection, Reassembly Operations 1 and 2 of this Service Manual for transition piece installation procedure.
  • Page 304 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 9. With the overhead crane move the turbine casing axially aft and rig the trolley hoist to the center lug on the spreader bar. With the trolley hoist take up on the rigging so as to transfer the load to the trolley hoist.
  • Page 305 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures Exhaust Stack Rail Lifting Beam Exhaust Transition Piece Trolley Hoist Spreader Bar Upper Half Turbine Casing (In Lift Position) Roof Line Exhaust Plenum (CG) Figure HGP-R.6. Turbine Casing Rigged for Reinstallation. HGP-R-15...
  • Page 306 Figure HGP-R.7. Typical Bolt Tightening Sequence for Unit Casings.
  • Page 307 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures Note: Refer to the Conduit Arrangement Wheelspace Thermocouples, draw- ing in the Parts Lists and Drawings Volume of this Service Manual for wheelspace thermocouple identification if needed. Operation 11 —...
  • Page 308 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 8. Install 11th stage cooling and sealing air lines. Note: Install all the 11th stage cooling and sealing air piping except the upper right side section with the compressor bleed valve (33CB-2). This sec- tion will be installed after the exhaust plenum access upper panel is re- installed.
  • Page 309 Exh. Plenum Eight (8) Clips Eq. Sp. Do Not Pinch Ring Maintain 0.000 To 0.010 Loose Weld Two (2) Layers To Exh. Plenum Staggered 7 Seg. Per Layer (14 Total) (See Note) Two (2) Layers Seven (7) Layers Staggered 7 Seg. Of Bir–Felt Per Layer (14 Total) Folded HS Shown...
  • Page 310 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 4. Lift the roof level over the turbine compartment and carefully lower (using chainfall) into posi- tion. 5. Apply Fel Pro C-102 anti-seize compound to bolts and bolt roof in place. 6.
  • Page 311 Inspection and Maintenance — GEK 107048 Hot Gas Path Inspection — Reassembly Procedures f. Place unit on ratchet and observe for leaks, abnormal noises, or control deficiencies. g. Prime fuel pump. 6. Crank the unit, and perform the following checks: a.
  • Page 312 Hot Gas Path Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 m. Periodically recheck torque on fuel nozzle mounting flange bolts after shutdown. 8. After synchronizing the unit and closing the breaker, perform the following load checks (as applicable): a.
  • Page 313 INSERT MAJOR INSPECTION...
  • Page 315 Reformated, September 1991 CONTENTS I. Disassembly Procedures (Major Inspection) For MS-6001B DLN-1 Equipped Machines ....MI-D-1 II. Inspection Procedures (Major Inspection) For MS-6001B DLN-1 Equipped Machines .
  • Page 316 Major Inspection Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK.
  • Page 317 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures I. Disassembly Procedures (Major Inspection) For MS-6001B DLN-1 Equipped Machines Operation 1 — Perform Alignment Checks Before Any Unit Disassembly is Begun Note: It is suggested that assistance be obtained from your General Electric Company Field Service Representative when performing alignment checks.
  • Page 318 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 CAUTION The generator field and load gear do not have a thrust bear- ing; therefore, there will be a tendency for the rotor to “walk” axially. c. The “walking” can be compensated for by using two dial indicators. One indicator will be mounted on the rotating flange and will measure the actual face run-out.
  • Page 319 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures d. The indicator must be placed in such manner to permit face readings to be taken without being affected by end float (thrust) of the accessory gear shaft when turning the shaft. e.
  • Page 320 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 7. Remove secondary fuel gas lines. 8. Remove false start drain tubing and manifold header. 9. Remove secondary fuel nozzles. 10. Remove the spark plugs. 11. Remove 11th stage cooling and sealing air lines. Note: The 5th stage cooling and sealing air lines and the bearing sealing air valve (VA14), if used, must also be removed from the upper half com- pressor casing at this time.
  • Page 321 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures Operation 5 — How to Remove Inlet Duct Elbow Note: Due to variations in design of inlet duct work, refer to the Duct Ar- rangement, Inlet drawing (MLA041) in the Parts Lists and Drawings, Volume Service Manual for bolting details.
  • Page 322 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Operation 7 — How to Place Mechanical Support Jacks Under Unit Casings and Inlet Bellmouth Note: The base floorplate underneath the compressor and turbine flanges has removable floorplate cutouts at each location for a mechanical support jack.
  • Page 323 Compressor Exhaust Discharge Turbine Forward Inlet Bell Frame Casing Casing Compressor Casing Compressor Casing NO. 2 Jacking Platform NO. 1 NO. 5 NO. 4 NO. 3 Mechanical Jacks NOTE: Position No. 5 Is Not Turbine – Flange To Flange Required If Compressor Weight = 91,650 lbs.
  • Page 324 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 8. Jack the turbine case to exhaust frame flange (position 2) to 0.004 0.001 in. Record all dial indica- tor readings. Recheck all jacks for snugness. 9. Jack the compressor discharge to turbine casing flange (position 3) to 0.002 –0.003 in. Record all dial indicator readings.
  • Page 325 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures 6. Remove outer horizontal joint bolting left and right sides. 7. Grind off the welds from the bolt heads on the outer diffuser to inner diffuser strut ends (7 total) on top half only and remove the bolts.
  • Page 326 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Inlet Compressor Discharge Turbine Exhaust Casing Casing Casing Casing Frame No. 1 Bearing No. 2 Bearing Lower Half Turbine Casing Guide Guide Upper Half Upper Half Bearing Cap Casing Lower Half Lower Half Casing...
  • Page 327 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures CAUTION The forward compressor upper half casing weighs ap- proximately 1775 pounds. The combined one piece upper half casing (forward and aft) weighs 3100 pounds. Operation 10 — How to Remove Upper Half Inlet Casing 1.
  • Page 328 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Twelve-Point Bolts, Three Each Side Compressor Inlet Casing Figure MI-D.3. Twelve Point Bolts in Inlet Casing. MI-D-12...
  • Page 329 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures Inlet Guide Vane Ring Forward Unit Support Plate Inlet Guide Vane Ring Support Plate and Locking Bolt Figure MI-D.4. Inlet Guide Vane Ring Support Plate and Locking Bolt. MI-D-13...
  • Page 330 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Note: The upper half rub ring is lifted as part of the upper half inlet casing. Operation 11 — Perform Hot Gas Path Disassembly Operations 6 Thru 11 Note: Refer to the Hot Gas Path Inspection section, in this Service Manual for the following disassembly operations.
  • Page 331 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures First Stage Nozzle Support Lug First Stage Nozzle With and Support Pad Seal Groove Support Pad and Support Pad Retainer Inner Barrel Compressor Discharge Casing Shim First Stage Nozzle Support Lug Groove First-Stage Universal Nozzle Support Ring...
  • Page 332 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 MI-D-16...
  • Page 333 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures 5. Insert the guide pins, eight total, in the body bound bolt holes of the aft compressor casing, if appli- cable, and the compressor discharge casing. Refer to Special Tool Listing in the Standard Practices section of this Service Manual for proper guide pins to be used.
  • Page 334 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 Aft Compressor Casing (If Applicable) Compressor Discharge Casing NOTE: Later Vintage Units No Longer Have An Aft Compressor Case. The Forward and Aft Casing Have Been Combined and Is Now Called Compressor Case.
  • Page 335 Inner Compressor Discharge Casing Compressor Casing Lower Half Comp Discharge Casing Figure MI-D.8. Inner Compressor Discharge Casing at Initial Assembly.
  • Page 336 Compressor Rotor and Stator Balance Weight and Plane Lower Half Inner Compressor Discharge Casing Compressor Exit Guide Vanes Figure MI-D.9. Inner Compressor Discharge Casing with Upper Half Removed.
  • Page 337 Inspection and Maintenance — GEK 107048 Major Inspection — Disassembly Procedures Note: All axial compressor clearances are to be measured with the rotor in contact with the forward or “normally loaded” face of the thrust bearing. 7. Measure and record stator blade tip clearances for all seventeen compressor stages (S1 to S17). 8.
  • Page 338 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 ing. Later vintage units the upper half bearing liner is bolted to the low- er half bearing liner. 1. Disconnect and tag any instrumentation on the upper half bearing housing. 2.
  • Page 339 Compressor Side Oil Deflector Lower Half Number 1 Bearing Housing Bearing Liner Lower Half Gear Side Figure MI-D.10. Number One Bearing Housing with Upper Half Removed.
  • Page 340 Upper Half Number 2 Bearing Housing Number 2 Bearing Strap Figure MI-D.11. Number Two Bearing Strap and Upper Half Number Two Bearing Housing.
  • Page 341 Lower Half Number 2 Bearing Housing Forward Deflector Stationary Oil Seals (Forward) Bearing Liner Lower Half Stationary Oil Seals (Aft) Figure MI-D.12. Number Two Bearing Housing with Upper Half Removed.
  • Page 342 Major Inspection — Disassembly Procedures Inspection and Maintenance — GEK 107048 4. Unbolt and remove the top half of the number two bearing exhaust baffle. 5. Unbolt and remove the bearing strap and upper half bearing liner. 6. Cover the open bearing housing to protect the rotor bearing journal. 7.
  • Page 343 Inspection and Maintenance — GEK 107048 Major Inspection — Inspection Procedures II. Inspection Procedures (Major Inspection) For MS-6001B DLN-1 Equipped Machines Operation 1 — Inspect Combustion System Components Per Combustion Inspection Operations 1 Through 10 and Operations 12 and 13 Note: Refer to the Combustion Inspection section, in this Service Manual for the following combustion inspection operations.
  • Page 344 Major Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 Operation 3 — How to Inspect Inlet Guide Vanes 1. Inspect the inlet guide vanes carefully for deposits, erosion (thinning of trailing edges and round- ing of leading and trailing tip corners) or corrosion pitting. 2.
  • Page 345 Inspection and Maintenance — GEK 107048 Major Inspection — Inspection Procedures 2. Report any discrepancies to your General Electric Company Field Service Representative. Operation 7 — How to Inspect Sleeve Bearings and Thrust Bearings 1. Assemble rotor support and lever in exhaust frame and under the shaft to raise the shaft for the removal of the lower half number two bearing liner.
  • Page 346 Exhaust Frame Bearing Liner Lower Half Support Lever Bolt Support Lever Figure MI-I.1. Rotor Support Lever for Removal of Number Two Bearing Liner Lower Half.
  • Page 347 Inspection and Maintenance — GEK 107048 Major Inspection — Inspection Procedures Note: The cumulative width of all scratches in circumferential and axial di- rections should not exceed 0.100 in. (Circumferential or axial pit for- mations exceeding three in number must be counted as continuous scratches.) Raised metal may be removed by scraping or lightly polish- ing the affected area with “Plastic Wool”...
  • Page 348 Major Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 11. Coat the lower half number two bearing liner to be installed with clean turbine oil used in the unit lube system and set the liner on the rotor journal. Roll the bearing liner carefully into the lower half of the bearing housing.
  • Page 349 Inspection and Maintenance — GEK 107048 Major Inspection — Inspection Procedures Raised metal may be removed by scraping or lightly polishing the affected area of the pad surface with “Plastic Wool,” such as “Scotchbrite.” Damage that exceeds the specified limits requires re- placement of the affected pad(s) if in a self adjusting tilting-pad thrust bearing.
  • Page 350 Major Inspection — Inspection Procedures Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK. MI-I-8...
  • Page 351 Inspection and Maintenance — GEK 107048 Major Inspection — Reassembly Procedures III. Reassembly Procedures (Major Inspection) For MS-6001B DLN-1 Equipped Machines Operation 1 — How to Reassemble Sleeve Bearings, Thrust Bearings, Upper Half Bearing Housings and Exhaust Hood Baffle CAUTION...
  • Page 352 Major Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 12. Check the anti-rotation pin and install the upper half number two bearing liner. 13. Apply joint sealant to bearing strap and install bearing strap shims and bearing strap. 14.
  • Page 353 Inspection and Maintenance — GEK 107048 Major Inspection — Reassembly Procedures 5. Apply a thin film of anti-seize compound to the bolts, install bolting and torque the horizontal joint. 6. Check the outside diameter of the upper and lower half casings at the horizontal joint to insure that the mating joints do not have a step greater than 0.0015 in.
  • Page 354 Major Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Inlet Compressor Discharge Turbine Exhaust Casing Casing Casing Casing Frame No. 1 Bearing No. 2 Bearing Lower Half Turbine Casing Guide Guide Upper Half Upper Half Bearing Cap Casing Lower Half Lower Half Casing...
  • Page 355 Figure MI—R.2. Compressor Discharge Casing Bolt Tightening Sequence.
  • Page 356 Major Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Operation 6 — Perform Hot Gas Path Reassembly Operations 1 Through 10 Note: Refer to the Hot Gas Path Inspection section, in this Service Manual for the following reassembly operations. 1.
  • Page 357 Inspection and Maintenance — GEK 107048 Major Inspection — Reassembly Procedures 6. Bolt up the inlet guide vane control ring and release the lower inlet guide vane support plate bolts. Operation 9 — How to Install Forward Compressor Casing 1. Clean and deburr mating joints. 2.
  • Page 358 Major Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 8. Tighten and torque all the horizontal joint bolting by starting at the mid point of the flange on both sides. Then torque alternately forward and aft both sides. 9.
  • Page 359 Inspection and Maintenance — GEK 107048 Major Inspection — Reassembly Procedures Operation 13 — Perform Combustion Inspection Reassembly Operations 3 Through 17 Note: Refer to the Combustion Inspection section in this Service Manual for the following reassembly operations. 1. Install outer combustion casings and flow sleeves. 2.
  • Page 360 Major Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 Operation 15 — How to Install Inlet Transition Piece Duct and Elbow 1. Check the integrity of the inlet transition duct, inlet elbow and the inlet trash screen. 2. Install new gasket on the inlet transition piece. Rig and lift the transition duct into position on the inlet plenum.
  • Page 361 Exh. Plenum Eight (8) Clips Eq. Sp. Do Not Pinch Ring Maintain 0.000 to 0.010 Loose Weld Two (2) Layers to Exh. Plenum Staggered 7 Seg. Per Layer (14 Total) (See Note) Two (2) Layers Seven (7) Layers Staggered 7 Seg. Of Bir-Felt Per Layer (14 Total) Folded As Shown...
  • Page 362 Major Inspection — Reassembly Procedures Inspection and Maintenance — GEK 107048 3. If alignment is not within limits, realign as necessary under the direction of your General Electric Company Field Service Representative. Operation 18 — How to Install Magnetic Pickup Ring, Accessory and Load Couplings 1.
  • Page 363 INSERT MAINTENANCE FORMS...
  • Page 365 GE Power Systems Gas Turbine Maintenance Forms Reformated, September 1991 NOTE The following forms have been listed for Reference Only. To obtain latest forms, contact your GE Technical Advisor or local GE office. PGS/GT-FF-6000 Site Information PGS/GT-FF-6026 TIL’s/FMI’s Applied PGS/GT-FF-6027 Renewal Parts...
  • Page 366 MS-6001 Series Thrust Bearings PGS/GT-FF-6124 MS-6001 Series Unit Casing Jacking Record PGS/GT-FF-6403 MS-6001B DLN-1 Combustion System Casing PGS/GT-FF-6404 MS-6001B DLN-1 Combustion System (Crossfire Tube and Spring Retainers) PGS/GT-FF-6406 MS-6001B Combustion Systems Liner (Slot Cooled Liner) PGS/GT-FF-6407 MS-6001B Transition Piece PGS/GT-FF-6408...
  • Page 367 MS-6001 Series Third Stage Nozzle, General Condition PGS/GT-FF-6124 MS-6001 Series Unit Casing Jacking Record PGS/GT-FF-6403 MS-6001B DLN-1 Combustion System Casing PGS/GT-FF-6404 MS-6001B DLN-1 Combustion System (Crossfire Tube and Spring Retainers) PGS/GT-FF-6406 MS-6001B Combustion Systems Liner (Slot Cooled Liner) PGS/GT-FF-6407 MS-6001B Transition Piece PGS/GT-FF-6408...
  • Page 368 Maintenance Forms Inspection and Maintenance — GEK 107048 PGS/GT-FF-WS26 MS-6001B DLN-1 Primary Fuel Nozzle End Cover PGS/GT-FF-WS27 MS-6001B DLN-1 Primary Fuel Nozzle PGS/GT-FF-WS28 MS-6001B DLN-1 Secondary Fuel Nozzle Major Inspection TN # – 1021 (DLN-1) PGS/GT-FF-6000 Site Information PGS/GT-FF-6026 TIL’s/FMI’s Applied...
  • Page 369 Maintenance Forms PGS/GT-FF-6124 MS-6001 Series Unit Casing Jacking Record PGS/GT-FF-6403 MS-6001B DLN-1 Combustion System Casing PGS/GT-FF-6404 MS-6001B DLN-1 Combustion System (Crossfire Tube and Spring Retainers) PGS/GT-FF-6406 MS-6001B Combustion Systems Liner (Slot Cooled Liner) PGS/GT-FF-6407 MS-6001B Transition Piece PGS/GT-FF-6408 MS-6001B DLN-1 Transition Piece Installed Clearances...
  • Page 370 Maintenance Forms Inspection and Maintenance — GEK 107048 THIS PAGE INTENTIONALLY LEFT BLANK. MF-6...