Table of Contents
Advertisement
Auxiliary and Controls Systems Maintenance
Inspection
FUEL GAS SYSTEM (if applicable)
Gas Control Valve
SPEEDTRONIC
Control Loop
HIGH PRESSURE CONTROL OIL SYSTEM HYDRAULIC SUPPLY
Main Hydraulic Supply
Pump
Auxiliary Hydraulic Supply
Pump
Hydraulic Supply Manifold
Air Bleed Valves
ACSM–8
What to Inspect for
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
Valve Unstable, Slow Movement,
Stroke Out of Specification, P2 in Error
Calibration, FCR Versus Stroke, Gas
Control Valve
Speed Versus P2 Speed Ratio Valve, P2
Transducer Calibration, LVDTs
Calibration
Electronic Trip action of 20FG
and 20 HD
Check 20FG for Proper Null Bias
Excessive Vibration or Unusual Noise
Improper Discharge Pressure
Relief Valve Leaking
Leakage at Shaft and Mounting
Flanges
Low Discharge Pressure
Leakage Around Shaft and Mounting
Flanges
Excessive Vibration or Unusual Noise
Connections Loose or Leaking
Improper Air Bleed Valve Operation
Inspection and Maintenance
Inspection
Document
Frequency and
or Page
Turbine Status
Reference
IMP–13
M — O
M — O
SA — S
SA — S
Maj — S
SA — S
Control
Specification,
Control
D — O
Specification–
Operating
Instructions and
A — S
Sequences and
Control
Specification–
A — S
Control System
Adjustments
SA — S
SA — S
IMP–13
M — O
D — O
A — O
M — O
IMP–13
A — S
M — O
M — O
IMP–13
A — S
IMP–14
A — S
Advertisement
Table of Contents
