OTI Olympus Technologies, Inc

OTI designs and manufactures Spherical Shell Membrane and Structural Truss digester covers. The Spherical Shell Membrane covers are the recognized preferred cover design for steel or stainless-steel digester covers.  OTI supplies fixed, floating, buoyant and gasholder covers from 20′ to 125′ diameter.


OTI has perfected Spherical Shell Membrane design with its EZup features that simplify cover installation.  The result is a higher quality digester cover that complies with all structural and operational design conditions to extend the useful service life of the cover.  It is easier to install, paint, maintain, and is less costly to install.  Some of the EZup features that help to increase cover life and decrease installed costs are:

  • The use of hollow structural shapes (HSS) for all assembly beams and structural members add strength yet reduce installation costs.
  • Shop formed EZup cover panels reduce field welding and the quantity of components required for installation.
  • Simplified assembly and welding of the perimeter thrust ring/side skirt sections reduce costs.
  • Temporary assembly tabs and brackets accelerate cover assembly prior to field welding.
  • Spacers, leveling gauges, weld wedge clips, location tabs, centering gauges, etc. all add to the streamlined assembly and welding of the cover.
  • Elimination of all acute angled joints and seams increase the ability to effectively blast the completed cover and apply protective coatings.
  • Because all of OTI’s covers are partially pre-assembled as a final quality check before shipment, field fit-up issues are prevented.

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