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    GE Energy LM2500+ G4 Operation and Maintenance Manual: Water Wash System Description

    Uploaded by

    Andrea Cupello
    The water wash system removes contaminant deposits from the gas turbine compressor using a water and detergent solution. During a wash cycle, the solution is sprayed into the compressor at a controlled pressure, temperature, and flow rate. The system consists of a tank, pump, piping, valves and a manifold. It can perform an online wash while the turbine is operating or an offline wash when shut down by directing the wash solution through different valves and spray nozzles.

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    © All Rights Reserved
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    GE Energy LM2500+ G4 Operation and Maintenance Manual: Water Wash System Description

    Uploaded by

    Andrea Cupello
    112 views2 pages
    The water wash system removes contaminant deposits from the gas turbine compressor using a water and detergent solution. During a wash cycle, the solution is sprayed into the compressor at a controlled pressure, temperature, and flow rate. The system consists of a tank, pump, piping, valves and a manifold. It can perform an online wash while the turbine is operating or an offline wash when shut down by directing the wash solution through different valves and spray nozzles.

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    lmx2g4_spd08

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    The water wash system removes contaminant deposits from the gas turbine compressor using a water and detergent solution. During a wash cycle, the solution is sprayed into the compressor at a controlled pressure, temperature, and flow rate. The system consists of a tank, pump, piping, valves and a manifold. It can perform an online wash while the turbine is operating or an offline wash when shut down by directing the wash solution through different valves and spray nozzles.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    112 views2 pages

    GE Energy LM2500+ G4 Operation and Maintenance Manual: Water Wash System Description

    Uploaded by

    Andrea Cupello
    The water wash system removes contaminant deposits from the gas turbine compressor using a water and detergent solution. During a wash cycle, the solution is sprayed into the compressor at a controlled pressure, temperature, and flow rate. The system consists of a tank, pump, piping, valves and a manifold. It can perform an online wash while the turbine is operating or an offline wash when shut down by directing the wash solution through different valves and spray nozzles.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    GE Energy

    LM2500+ G4 Operation and Maintenance Manual

    WATER WASH SYSTEM DESCRIPTION

    TABLE OF CONTENTS

    OVERVIEW ................................................................................................................................... 2

    System Description ....................................................................................................................... 2

    Rev 0 LM2500+ G4 O&M Manual Page 1 of 2


    GE Energy
    LM2500+ G4 Operation and Maintenance Manual

    OVERVIEW

    Over time, gas turbines experience a loss of performance due to contaminant deposits on internal
    components. This loss is indicated by a decrease in power output and an increase in heat rate.
    These deposits result from the ingestion of air that contains dirt, dust, and hydrocarbon fumes. A
    large portion of these contaminants is removed by inlet air filtration, but contaminants that pass
    through the filters have to be removed from the compressor by washing.

    The primary purpose of the water wash system is to remove contaminants from the turbine
    compressor. During the washing operation, a solution (a water and detergent mix) is sprayed in
    to the gas turbine at the proper pressure, temperature, and flow rate to wash the compressor. The
    wash is followed by a rinse cycle, which is designed to remove detergent residue. Washing can
    be performed while the turbine is on-line or off –line.

    The water wash system consists of tank and pump (mounted on the auxiliary skid), inter-
    connecting piping, control valves, and an on-line wash manifold.

    System Description

    To follow this description on the system F&ID, refer to your site-specific GE drawing 740262.

    The water wash tank, located on the auxiliary skid, has 2 inlets (one for demineralized water and
    one for chemicals/detergent), a level gauge (LG-5027), and a hand controlled tank drain valve.
    The tank has a capacity of 102 L (27 gal). Water is manually supplied to water wash tank.

    Tank outlets include a tank vent breather and the main outlet to the suction side of the pump.
    Downstream of the pump is a filter and a check valve. A 3-way solenoid operated valve, SOV-
    5031 directs water to the turbine. An “Offline Water Wash” is initiated when the SOV-5031 is
    not energized. Once SOV-5031 is energized, water is then directed to the spray nozzles for the
    “Online Water Wash” manifold.

    Both online and offline water wash requires an air supply (SOV-5034) for operation of the
    pneumatic pump. One solenoid-operated valve (SOV-5034) controls the air supply. Air
    pressure is controlled by PCV-5028.

    Rev 0 LM2500+ G4 O&M Manual Page 2 of 2

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