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National Grid Sites- Strategic Transformer Maintenance and refurbishment works

TP Power Services were contracted to provide National Grid with the strategic maintenance  and refurbishment of  400kV Transformers at various National Grid sites. After completing a detailed inspection reports for each site , TP Power Services were employed to complete the works, as well as provide immediate refurbishment works upon the Power transformers.


TPPS completed a variety of modification and refurbishment works. All of the works were completed within the defined  outage period; 

   Steam cleaning, repainting  and external conditioning of the transformers
   Refurbishment and repainting of the Transformers
   Removal of corroded cable tray etc and replacement with new
   Custom replacement of On Load Tap Changer control kiosks parts
   Sourcing and replacement of cooling bank fan silencers
   Replacement and testing of 3 off faulty Winding and Oil Temperature Indicators
   Fabrication and fixture of new turrets
   Removal, overhaul, testing and refurbishment cooling fans
   Sourcing and replacement of main pipework expansion valves
   Processing and circulation of existing  mineral insulating oil 
   Vacuum operations
   Overplating of corroded areas of the main transformer tanks.
   Fabrication and replacement of  access covers
   Fabrication of 4 off sets of replacement cooling pipework
   Testing and commissioning works
   Design, provision, manufacture and install of new replacement cooler banks, including radiators, framework and fans
   Design supply and installation of transformer cooler radiator banks
   Oil sample and Dissolved Gas Analysis 





Posted by BA on 6 January 2011


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Established in 2000 by a group of electrical engineers specialising in transformers and switchgear; we have grown to offer fully integrated substation services.....



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