Refurbishment of ex-proof MEG Heaters (Heater Bundles)

MEG Heaters Refurbishment Project


In 2010 unitemp was contracted to refurbish 5 MEG heaters (flange heaters, heater bundles) to boil off mono ethylene glycol during gas transfer in a refinery.

The client requested improvements as the old elements were prone to leaking.

The refurbishment involved disassembly of the bundle, reworking the flanges and replacing the heating elements.

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Refurbishment Project for Heater Bundles
MEG heaters: Refurbished
Refurbished Flanged Heater for the petrochemical industry

The Challenge

  • Improved sealing
  • Hazardous environment
  • Moisture proofing of element seals
  • Safety features to prevent over-temperature hazard


We designed and manufactured all electrical heater bundles. Special compression fittings were used to seal the elements.

Large diameter elements with low Watts density and thermostatically limited sheath temperature were installed for safety. 

The project was completed successfully in 2013.

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