GEK 116862 Inspection and Maintenance Instructions for 7FA.05 Gas Only and Dual Fuel Gas Turbines
XI. FUEL GAS SYSTEM ........................................................................................................................ 26
A. General Notes ................................................................................................................................ 26
B. Fuel Gas Stop Ratio and Control Valves ...................................................................................... 26
XII. LIQUID FUEL FORWARDING SYSTEM (DUAL FUEL UNITS ONLY)................................ 26
A. Centrifugal Pump .......................................................................................................................... 26
B. Fuel Oil Heaters ............................................................................................................................ 26
XIII. FUEL OIL SYSTEM (DUAL FUEL UNITS ONLY) .................................................................... 27
A. General Notes ................................................................................................................................ 27
B. Fuel Oil Stop Valve ....................................................................................................................... 27
C. Main Fuel Pump ............................................................................................................................ 27
D. Flow Divider ................................................................................................................................. 27
E. Fuel Nozzle Selector Valve ........................................................................................................... 27
F. False Start Drain Valve ................................................................................................................. 27
XIV. ATOMIZING AIR SYSTEM (DUAL FUEL UNITS ONLY) ....................................................... 28
A. General Notes ................................................................................................................................ 28
B. Atomizing Air Compressor ........................................................................................................... 28
C. Atomizing Air Pre-Cooler ............................................................................................................. 28
D. Air Separators ............................................................................................................................... 29
XV. WATER INJECTION SYSTEM (DUAL FUEL UNITS ONLY) ................................................. 29
A. General Notes ................................................................................................................................ 29
B. Water Injection Pump ................................................................................................................... 29
C. Water Injection Control Valve ...................................................................................................... 29
D. Water Injection Stop Valve ........................................................................................................... 29
XVI. HYDRAULIC OIL AND LIFT OIL SYSTEM .............................................................................. 29
A. Hydraulic and Lift Oil Supply Pumps ........................................................................................... 29
B. Hydraulic and Lift Oil Supply Manifold ....................................................................................... 30
C. Air Bleed Valves ........................................................................................................................... 30
D. Accumulators ................................................................................................................................ 30
XVII. COOLING AND SEALING AIR SYSTEM ................................................................................... 30
A. General Notes ................................................................................................................................ 30
B. Piping System ............................................................................................................................... 30
C. Compressor Bleed Valves ............................................................................................................. 31
D. Compressor Discharge Pressure Transmitters ............................................................................... 31
E. Case Temperature Management .................................................................................................... 31
XVIII. STARTING SYSTEM ....................................................................................................................... 31
A. Turning Gear Motor ...................................................................................................................... 31
B. Gear Box ....................................................................................................................................... 31
C. Flexible Coupling .......................................................................................................................... 31
XIX. FIRE PROTECTION SYSTEM ...................................................................................................... 32
A. System Package Lagging .............................................................................................................. 32
B. Water Mist System (as applicable) ............................................................................................... 32
C. CO
2
High Pressure System (Clean Agent Systems) ...................................................................... 32
D. CO
2
High Pressure Storage Cylinders (Clean Agent Systems) ..................................................... 32
E. CO
2
High Pressure System Tests (Clean Agent Systems) ............................................................ 33
F. Low-Pressure CO
2
System Electric Release and “Puff” Tests (where applicable) ....................... 33
G. Fire Detectors ................................................................................................................................ 34
H. Ventilation Dampers ..................................................................................................................... 34
XX. HAZARDOUS GAS DETECTION ................................................................................................. 35
A. Infrared (IR) Detectors .................................................................................................................. 35
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