9e_gt_m_m02_c02_v2_a

GE Energy Products – Europe Rev. : A Page : 1/10 MAINTENANCE MANUAL GAS TURBINE 2.2.

PERIODIC INSPECTION SCHEDULE NOTE : Inspection of the instruments, devices and systems mentioned in the the column on the left is described in the pages which follow this table. INSPECTION

WHAT TO INSPECT FOR

STANDARD MAINTENANCE ITEMS Instrumentation Pressure switches and Damage gauges Reading in error Calibration Transmitter Calibration Thermometers (Dial type) Damage Reading in error Calibration Flowmeters Leaking seams and joints Calibration Vibration detectors Stable reading (39 TV) Mounting secure Liquid level indicators Reading in error High and low actuation point SPEEDTRONIC meters Control devices Temperature switches Thermostats Pressure regulating valves (VPR’s) Temperature regulating valves (VTR’s)

INSPECTION FREQUENCY & TURBINE STATUS A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S

Damage Zero reading Calibration

D-O M-S A-S

Calibration pickup and dropout setting Calibration setting Packing leakage Incorrect setting Packing leakage Incorrect setting

A-S A-S A-S A-S A-S A-S

Hydraulic/mechanical equipment Relief valves (VR) Chattering and leakage Settings Solenoid valves Leakage Proper operation Orifices Erosion or corrosion Plugging, orifice deterioration Sharp edges or irregular chamfer Check valves Leakage Corrosion Strainers gas/liquid Dirt, scale

A-S A-S A-S A-S A-S A-S A-S SA - S 3 Yrs. - S SA - S

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9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 2/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION

WHAT TO INSPECT FOR

Filters, lube and fuel

INSPECTION FREQUENCY & TURBINE STATUS A-S A-S A - S or as required A-S A-S A-S A-S

15 psi maximum D P Leaking seams and joints Dirty element Hydraulic supply filter 60 psi maximum D P Leaking seams and joints Dirty element Air filters (air extraction Moisture accumulation valve) Dirty filter Drain cocks Visual check of all drain cocks to detect oil leaks W-O Check all operating drain cocks A -S Heating cooling and ventilation Air conditioners Dirty filter W-S Improper thermostat setting W-S Dirty condenser coil A-S Space heaters Improper operation A-S Dirty heating elements, blades and louvers A-S Improper thermostat setting A-S A-S Accessory and turbine Excessive fan wheel wear compartment vent fans A-S Vibration A-S Cleanliness A-S Mounting security of hardware etc... Motors, motors and pump couplings A-S Motors Excessive vibration Dirty louvers and screens A-S Loose mounting bolts and electrical A-S connections Dirty windings, collector rings, commutator, A-S brush rigging Brush condition A-S A-S Motor and pump Damages components couplings A-S Loose bolts and grease plugs Evidence of wear A-S Unit piping systems Out D – O / In A - S (Fuel, oil, air, water) Leakage A-S Piping and valves Loose hardware, hangers and clamps A-S Broken supports A-S Vibration A-S Improper valve operation A-S Loose valve packing All rights reserved Copyright - Droits de reproduction réservés

9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 3/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION

WHAT TO INSPECT FOR

INSPECTION FREQUENCY & TURBINE STATUS

SYSTEM MAINTENANCE ITEMS Lube system Lube oil pumps Excessive noise A-S Wear ring clearance Maj. - S Thrust bearing wear Maj. - S Bearing seal wear Maj. - S Lube oil tank Peeling paint A-S Loose hardware, fittings on internal piping Maj. - S and tubing Loose or missing hardware on pipe hangers Maj. - S and clamps Loose hardware at pump intakes Maj. - S Presence of sludge and unusual foreign Maj. - S matter in bottom of tank Lube oil properties Irregular physical properties of lubricant M - S/O sample taken from tanks and presence of contaminants A-S Heat exchangers Improper operation A-S Leakage A-S Contaminated water 3 Yrs. - S Plugging of leaking tubes Lube oil immersion heaters Improper operation M-O Dresser couplings outside Oil leakage/hardware security D-O Seal brittleness A-S Dresser couplings inside Oil leakage/hardware security A-S Seal brittleness A-S Water system Maj. - S Cooling system checks System fouled with contaminants Improper water flow Maj. - O Incorrect flow versus pressure drop Maj. - S Dresser couplings outside Oil leakage/hardware security A-S Seal brittleness A-S A-S Water tank Evidence of tank leakage 3 Yrs. S or Maj - S Improper pressure cap setting M-O Poor condition of cap gasket and gasket surface Damaged filler neck A-S Dirt inside tank A-S Corrosion inhibition Q-S (Or every water addition) All rights reserved Copyright - Droits de reproduction réservés

9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 4/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION

WHAT TO INSPECT FOR

Anti-freeze Fuel oil system (If applicable) Stop valve

Improper concentration

Main fuel pump Flow divider Fuel nozzle selector valve

False start drain valves

SPEEDTRONIC control loop

Accumulator Fuel gas system (If applicable) Gas control valve

Transmitter

External leaks Rough operation Sluggish movement open/close Trip action with loss of hydraulic trip oil Leaking shaft seal Leakage Outside Speed pickups secure and properly set Improper stem operation Leakage at connections

INSPECTION FREQUENCY & TURBINE STATUS A-S

A-S A-S A-S A-S A-S M-O A-S A-S A-S

Incorrect sequencing during start-up and shut-down Improper operation of valve actuator Air and oil leaks Worn diaphragm in valve actuator Flow unstable, hot starts, overtemperature Calibration FSR versus fuel flow LVDTs Electronic trip actuation of 20 FL Check 20 FL for proper Null Bias LVDT feedback at firing speed versus FSR Pressure

A – S each starting if possible A-S A-S A-S D-O A-S SA - S SA - S A-O A-S

Gas leakage at stem, packing leak off or vent Hydraulic cylinder rod seal leakage Rough operation Improper operation of trip relay Damage control surfaces of valve plug and seat Trip action with loss of hydraulic trip oil

Maj. - S

Calibration

A-S A-S Maj. - S Maj. – S Maj. - S A-S

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9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 5/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION

WHAT TO INSPECT FOR

Gas stop valve

Gas leakage at stem, packing leak off or vent Hydraulic cylinder rod seal leakage Rough operation Improper operation of trip relay Damage control surfaces of valve plug and seat Trip action with loss of hydraulic trip oil

Gaz detection system : Gas-detectors. Indicator of concentration. Checking of the circuits of alarm. Diode of tension presence SPEEDTRONIC control loop

INSPECTION FREQUENCY & TURBINE STATUS Maj. - S A-S A-S Maj. - S Maj. – S Maj. - S

Calibration Checking of the zero Verification of proper operation of system

Q–S Q–S A–S

Lit Valve unstable, P2 in error

D–O D-O

Calibration, FSR versus stroke, gas control valve Speed versus P2 speed ratio valve P2 transducer calibration LVDTs calibration Electronic trip action of 20 FG Check 20 FG for proper Null Bias

High pressure control oil system hydraulic supply Improper discharge pressure Main hydraulic supply pump Relief valve leaking Leakage at shaft and mounting flanges Auxiliary hydraulic supply Low discharge pressure pump Leakage around shaft and mounting flanges Hydraulic supply manifolds Connections loose or leaking Air bleed valves Improper air bleed valve operation Accumulators Pre-charge pressure Accumulator safety disc Hydraulic system piping Leaking pipe connections

A-S A-S SA - S SA - S

A-S A-S A-S A-S A-S A–S A-S A–S A–S HGP – S

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9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 6/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION

WHAT TO INSPECT FOR

Inlet guide vane control system Calibration Operation and calibration 20 TV trip servo-valve for Null Bias Check trip action of inlet guide vanes with loss of hydraulic trip oil Check operation and sequencing of compressor bleed valves Leakage in the system

Cooling and sealing air system Piping Orifice plates Orifice unions Leakage Loose hardware, hangers and clamps Compressor bleed valve Sluggish movement open/close Leakage Compressor discharge Calibration pressure transmitter Atomizing air system (If applicable) Belt loose or worn Starting atomizing air compressor Seal leaking Leaking oil seal Atomizing air compressor (shaft driven-on base) Presence of oil or vapor at vent Cylinder discoloration, hot spots or scorched paint Improper start-up to main compressor transfer Compressor air filter Dirty filter By-pass valve Atomizing air pre-cooler

Proper operation Water leaks on tube side Scale, sludge, deposits Plugging of leaking tubes

INSPECTION FREQUENCY & TURBINE STATUS A–S A–S A–S A–S M–O

during the stops

A–S A–S A–S

A–S A–S A-S A-S A-S during the stops A-S A–S A–S A–S Maj. – S

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9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 7/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION

WHAT TO INSPECT FOR

Starting system (If applicable) Starting motor Torque converter

Presence of dirt, oil, grease and/or debris External oil leaks at shaft seals, bolted flanges, cover plates Gears pitted, scored, galled Broken teeth and gear wear

Accessory gear train Fire protection system System package lagging

Fire detectors Break-glass units Signals ( Flashing lights, sirens … ) Nozzles High pressure system : High pressure storage cylinders Test pressure bottles according to local regulation High pressure system solenoid pilot valve Contact of position of the isolating valves Pressure switch of confirmation passage CO2 Low pressure system : (If applicable) Quantity of CO2 Low pressure system solenoid pilot valve Contact of position of the isolating valves Pressure switch of confirmation passage CO2 Directional valves Valves of safety of the tank CO2

INSPECTION FREQUENCY & TURBINE STATUS

A–S A–S Maj. – S Maj. – S

Leakage at lagging Open joints between bases, roof joints and door fits Improper operation Improper operation Improper operation

A-S A-S A-S

cleanliness

A-S

Loss of cylinder weight test of behavior under pressure

A-S A-S

W-O 10 ans - S

Verification of proper operation of system

A-S

Verification of proper operation of system

A-S

Verification of proper operation of system

A-S

To check the quantity of CO2 in the tank

W-O

Verification of proper operation of system

A-S

Verification of proper operation of system

A-S

Verification of proper operation of system

A-S

Verification of proper operation of system See local regulation for checking of the calibration

A-S 2 ans - S

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9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 8/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION

WHAT TO INSPECT FOR

SPEEDTRONIC control Power supply

Refer to Unit control specifications for appropriate voltages for given unit system in any alarm Grounds Start-up control loop Improper FSR’s during start-up Firing, warm-up, minimum and maximum FSR’s meet limits of Control specifications Speed sensors and relays Speed relays pickup and drop out properly Speed detection circuits calibrated to Control specifications Speed/load control loop Calibrate to Control specifications Temperature control Exhaust temperature on control curve per control specifications Excessive spread between thermocouples Calibration to Control specifications CPD transducer (96 CD) calibration Thermocouple grounds and open circuits Combustion monitor Proper operation Calibration Overtemperature protection Calibration of alarm and trip points to Control specifications Thermocouple grounds and open circuits Vibration protection system Calibration of alarm and trip settings Flame detection and Dirty, damaged or defective scanner lens protection system High or low input voltage Loose terminals Improper operation and sequencing Overspeed protection Turbine electronic trip speed not to exceed (electronic) normal trip out by more than 1.0 % Calibration of electronic trip system Improper magnetic pickups clearance settings

INSPECTION

A-S

A-S A-O A-O M-O A-S A-S W-O D-O A-S A-S A-S A-O A-S A-S A-S A-S CI - S CI - S CI - S A-S A-O A-S A-S

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9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 9/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION Water injection system (If applicable) Systems maintenance

Steam injection system (If applicable) Systems maintenance

WHAT TO INSPECT FOR

Calibration electronic circuits Calibration of control valve circuits Calibration of flowmeter circuits Check flowmeter accuracy Check control valve for leakage Check stop valve operation Check stop valve for leakage Check forwarding pump oil level Check that water flow is per Control specifications Check accumulator pre-charge Check water spray nozzles for plugging and spray pattern Cheeck periodically for leaks or other defects the steam injection on base piping and the control valves. Check freedom of movement of all hand operated valves (should be returned to their normal operating position after this)

SPEEDTRONIC panels Control pages

Corrosion or discoloration due to heat Dirty page area Damaged wiring or connections Dirty circuit boards Dirty card guides Cards plugged in properly Relay contacts Contacts dirty or worn Contacts arcing excessively Deformed contacts Reduced contact pressure Station auxiliaries and service Battery Improper specific gravity at pilot cell Low electrolyte level at pilot cell Loose and dirty connections Damaged containers and cell covers Faulty sealing or missing vent plugs Improper specific gravity and low electrolyte at any one cell Battery charger Dirty charger Voltmeter out of calibration Faulty capacitors and diodes

INSPECTION

A-S A-S A-S 3 Yrs. - S A-S A-S A-S M-O W-O A-S A-S

W-S M-S

A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S M-S M-S M-S M-S M-S A-S A-S SA - S A-S

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9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09

GE Energy Products – Europe Rev. : A Page : 10/10 MAINTENANCE MANUAL GAS TURBINE INSPECTION

WHAT TO INSPECT FOR

Motor control center Indicating lamps

Burned out lamps Improper operating lighting sequence Main bus insulators Dirty bus insulators and barriers Main vertical bus joints and Loose connections main bus supports Magnetic contactors and Dirty contactors and starters starters Loose connections Contacts welded together, worn and arcing Magnetic relays Dirt, dust, oil and grease General purpose Damaged arc chute Improper arcing hole clearances Improper armature spring adjustment Weak contact pressure Improper closing and latching of control panel doors Nameplates missing Cleanliness of panel Starting motor limitamp Loose screws, nuts and bolts contactor (if applicable) Loose electrical interlocks Contacts, general condition DC magnet assembly alignment per specs Collars on each side of movable power tips for proper fit and alignment Accumulation of dust, dirt and foreign material on contactor and arc chutes INLET AIR SYSTEM Duct, silencer Leakage IGV Cleanliness Corrosion Damage

INSPECTION

M - O/S M - O/S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S A-S

A-S CI – S CI – S CI – S

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9E_GT_M_M02_C02_V2_A

Revision: (A)

Date: 03/09