Thorndon Cook Power
Thorndon Cook Power
Thorndon Cook Power
Nam Theun 2 Hydropower Project

ENGIE Laborelec Operation and Maintenance Guidelines

Pressure vessel maintenance

The Project

TCP was engaged by Laborelec to prepare a comprehensive guideline report on operation and maintenance best practice and typical issues specific to geothermal power plants.


TCP developed a tailored report content in concertation with Laborelec; several iterations were planned to be as interactive as possible. The topics covered in the report were following:

  • geothermal operating environment: processes, thermodynamics, resources, well production and geothermal fluids, design of wells, steamfield design, power plant design
  • steamfield and power plant main equipment O&M – issues and risks: review of all main equipment
  • geothermal steamfield and power plant operation
  • maintenance schedules – geothermal steamfield and power plant: annual maintenance, major overhauls, scaling and corrosion issues etc
  • O&M staffing and costs: staff organisation and numbers, staff skill levels and experience,
  • steamfield and power plant operating and maintenance cost
  • maintenance capex
  • health and safety – best practice


capital and operating costs estimation, construction, commissioning and operation

asset management planning and support, project and corporate risk

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