Inspection and Maintenance Instructions for 7FA.05 Gas Onl
and Dual Fuel Gas Turbine
GEK 116862
Inspection What to Inspect for
Inspection
Frequency and
Turbine Status
Document
or Section
Reference
Cooling Water Radiator Fan
Module
Dirty Wheel Housing, Ducts and
Screens A — S
X. E.
Excessive Vibration Noise A — O
Damaged Blades A — S
Loose Mounting Bolts A — S
Air Flow Obstructed A — S
Rust, Corrosion and Peeling A — S
Cooling Water Pump(s) X. F.
Leakage Shaft Seal M — O
Dirty Shaft Seal Cooling Water Line
and Filter Element A — S
Excessive Wear Ring Clearance Maj — S
Excessive Mechanical Seal Wear Maj — S
FUEL GAS SYSTEM (INCLUDING PURGE FOR DUAL FUEL UNITS)
Gas Control Valve XI. B.
Gas Leakage at Stem, Packing Leak
Off or Vent M — O
Rough Operation SA — S
Improper Operation of Trip Relay SA — S
Damage Control Surfaces of Valve
Plug and Seat Maj — S
Trip Action with Loss of electric power SA — S
Lubricate Ball Screw and Bearing A — S
Stop Ratio Valves XI. B.
Gas Leakage at Stem, Packing Leak Off
or Vent M — O
Rough Operation SA — S
Improper Operation of Trip Relay SA — S
Damage Control Surfaces of Valve Seat Maj — S
Trip Action with Loss of electric power SA — S
Lubricate Bearings and Gears A — S
Purge Valves XI. B.
Sluggish Movement Open/Close SA — S
Leakage M — O
SPEEDTRONIC
*
Control
Specification,
Control
Specification–
Operating
Instructions
and Sequences
and Control
Control Loop Valve Unstable, Slow Movement,
Stroke Out of Specification, P2 in Error D — O
Calibration, FCR Versus Stroke, Gas
Control Valve A — S
Speed Versus P2 Speed Ratio Valve, P2
Transducer Calibration A — S
Electronic Trip action SA — S
LIQUID FUEL FORWARDING SYSTEM (Dual Fuel Units Only)
Centrifugal Pump XII.A.
Improper Discharge Pressure M – O
Unusual or Excessive Noise M – O
*
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