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Minworth CHP:

Minworth Sewage Treatment Works is an important renewable energy generating plant for Severn Trent Water, generating around 55 GWh of electricity each year. The current fleet of CHPs includes 5 Waukesha CHPs (7.5MW), 1 of these CHPs had failed and was beyond economic repair, and the other 4 Waukesha CHPs were obsolete and posed a risk of failure.

Three of the Waukesha CHP’s were replaced with new more efficient units that will deliver further OPEX savings from increased efficiency, as well as providing increased reliability and reduced maintenance costs.

BIO GAS SYSTEM

  • Gas system shutdown and break in
  • Manufacture and installation of all interconnecting 316L bio gas stainless steel pipework
  • Design, manufacture and installation of condensation pot and associated drainage pipework
  • Installation of 4no gas compressors
  • Installation of dehumidification unit
  • Installation of siloxane removal unit
  • Installation of virtual air stack
  • Design, manufacture and installation of gas pipework road crossing bridge
  • Design, manufacture and installation of all pipe supports
  • Testing of all gas pipework
  • Nitrogen purge of all gas pipework
  • Insulation, cladding  and trace heating of gas pipework

HOT WATER SYSTEM

  • Installation of temporary hot water system pipework
  • Hot water shutdown and break in
  • Manufacture and installation of all interconnecting 304L stainless steel hot water pipework
  • Installation of 2no hot water pump sets
  • Design, manufacture and installation of hot water mixing chamber
  • Design, manufacture and installation of 50 mtr hot water pipe bridge
  • Design manufacture of all pipe supports
  • Testing of all hot water pipework
  • Insulation and cladding of all hot water pipework

ENGINE LUBE OIL SYSTEM

  • Manufacture and installation of 304L stainless steel lube oil pipework
  • Manufacture and installation of lube oil pipework supports
  • Testing of lube oil system

FYEL used their vast experience and knowledge in process pipework design, manufacture and installation to come up with several innovative solutions and as a result made some significant changes to the clients design for the hot water pipework.

This involved the rerouting of the entire hot water system and connecting into an existing system in the basement of the generator station. To reduce down time on the existing CHP engines, FYEL installed temporary DN150 flexible hoses vastly reducing down time of the hot water system and more importantly removing the potential use of the boiler back up system.

FYEL also had a large input into the design of the gas system, due to the restricted space FYEL made some changes to the pipework routes to ensure the pipework could be easily accessed and maintained while still being in keeping with the client’s original design. 

If you would like to find out more information on the overall works completed on site you will find a useful case study on the link below

http://www.waterprojectsonline.com/case_studies/2014/Severn_Trent_Minworth_CHP_2014.pdf