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ON Power reorganized their turbine maintenance strategy, as it was very expensive and all major turbine parts had to be sent overseas for repair.
The spare part prices were very high when bought from the manufacturer.
2011 ON Power hired DTS for all turbine overhaul, turbine rotor and diaphragm repair.
The turbine workshop has already completed several major complicated rotor repairs, including the elements listed below.
Our work with ON Power has improved their knowledge of complicated repair processes, thereby enabling them to make informed decisions.

This cooperation creates value for both parties, who will continue to grow and develop together.

 hellisheiði power plant

Hellisheiði geothermal power plant is a flash steam, combined heat and power plant located in South West Iceland featuring the largest geothermal systems (high-enthalpy) in the country. 

Plant main components as DTS services

  •  6 x 45 MW MHI turbines and generators
  •  1 x 33 MW Toshiba turbine and generator 
  •  7 x shell and tube condensers
  •  14 x condenser pumps
  •  48 x vacuum pumps
  •  28 x cooling tower
  •  6 x 160 KW fresh water pumps, 500 l/s
  •  2 x 160 KW brine water pumps 500 l/s
  •  All valves, motors, pumps, sensors, etc.
  •  Total water pump capacity of the plant is more than 52,800 l/s

Overview of major projects by our employees:

  •  2003-06 Installation of two 40 MW MHI turbines and generators
  • 2007-08 Installation of two 40 MW MHI turbines and generators
  • 2009 Overhaul of 40 MW MHI Turbine #2
  •  2010 Overhaul of 40 MW MHI Turbine #1
  • 2010-11 Installation of two 40 MW MHI turbines and generators
  • 2011 Overhaul of 30 MW Toshiba Turbine #11
  •  2012 Overhaul of 40 MW MHI Turbine #3
  • 2013 Establish and operate SP Rotor repair workshop
  • 2013 Overhaul of 40 MW MHI Turbines #2 & 4
  • 2014 Overhaul of 40 MW MHI Turbine #1 & 5
  • 2015 Major rotor repair 40 MW MHI for turbines 1-4
  • 2015 Reorganizing and managing the leading maintenance workshop for ON Power
  • 2015 Overhaul of 30 MW Toshiba Turbine #11 
  • 2016 Major rotor repair 40 MW MHI 
  • 2016 Overhaul of 40 MW MHI Turbine #3
  • 2016 Overhaul of 40 MW MHI Turbine #6
  • 2017 Major rotor repair 40 MW MHI
  • 2017 Overhaul of  #2 40 Mw MHI Turbine + generator #3
  • 2018 Rotor repair 33 MM Toshiba Turbine #11

Nesjavellir power plant


Nesjavellir power plant is located in Hengill in South West Iceland. The plant is a combined geothermal heat and power plant generating electricity and hot water for district heating. 

Plant main components as DTS services:

  • 4 x 30 MW MHI turbines and generators
  • 4 x shell and tube condensers
  • 8 x condenser pumps
  • 13 x vacuum pumps
  • 6 x 1,000 KW cold fresh water pumps 1,800 l/s
  • 6 x 1,000 KW hot fresh water pumps 1,800 l/s
  • All valves, motors, pumps, sensors, etc.
  • Total water pump capacity of the plant is
  • more than 26,600 l/s

Overview of major projects by our employees:

  • 2001-03 Installation of two 30 MHI turbines  and generators
  •  2002 Overhaul of 30 MW MHI Turbine #2
  •  2003 Overhaul of 30 MW MHI Turbine #1
  •  2004 Overhaul of 30 MW MHI Turbine #3
  •  2008 Overhaul of 30 MW MHI Turbine #2  & generator inspection
  •  2010 Overhaul of 30 MW MHI Turbines #4 & 3
  •  2011 Overhaul of 30 MW MHI Turbine #1
  •  2012 Overhaul of 30 MW MHI Turbine #2
  •  2013 Overhaul of 30 MW MHI Turbine #3
  •  2014 Major rotor repair 30 MW MHI for Turbines 1-4
  •  2015 Overhaul of 30 MW MHI Turbine #1 & 3 & generator inspection
  •  2016 Major rotor repair 30 MW MHI for Turbines 1-4
  •  2016 Overhaul of 30 MW MHI Turbine #2
  • 2017 Major rotor repair 30 MW MHI for Turbines 1-4
  • 2018 Overhaul of 30 MW MHI Turbine + generator #3
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