Rotadisc end exposed and almost ready for removal.

Inside of dryer. Cleaned and lubed and ready for new disc drum.

End plate lifted into position.
Had to cut 90 percent of bolts with a torch.
New disc drum.
New disc drum in place.

West Coast Reduction RotaDisc Dryer Replacement

Vancouver, British Columbia

Replacement of a 50-ton RotaDisc dryer and associated work. The RotaDisc dryer is used to recycle food waste and-products from food producers, like farms, restaurants and supermarkets, transforming them into ingredients used in renewable energy, animal feed, soap and more. Work was conducted over a period of 24 days.

Scope Items
  • Site mobilization and safety course/orientation.
  • Rotor end bearing/saddle support removals.
  • 6×6 wood sliders installation and strapping.
  • Strip excess assemblies and place slider guide.
  • Install temporary floor angle braces (Peri-form jacks).
  • Jack rotor out of shell to temporary wall.
  • Arrange wood wall removal and crane schedule.
  • Sunday crane logistics and rotor removal.
  • Prepare new rotor with bearings and saddles torqued.
  • Clean old housing and align for new rotor installation.
  • Arrange wood wall removal and second crane schedule.
  • Sunday crane logistics installing new rotor into shell.
  • Reinstate wood temporary wall after new rotor install.
  • Slide rotor into internal bearings and finalize alignment.
  • Finish bolt up on housings and end plates.
  • Test rotate new rotor and test run all assemblies.
  • Final commissioning of rotor assembly and reconnections.
Additional Scope Items
  • Cut all the bolts around the end cover plate to allow for removal of the cover plate.
  • Cut 80% of the flights off for easier removal of the old Rotadisc drum.
  • Fabricated and welded L tabs to attach the timbers to.
  • Wire wheel and cleaned off the face of the end plate for a batter seal.
  • Welded imperfections on the cover plate and ground flat.
  • Wire wheeled pillow block flange and half rings, cleaned and wire wheeled contact locations.
  • Cut bearings off and retrieved needed components.
  • Fabricated locations in order to be able to place jacks.
  • Wire brushed and cleaned all hardware needed.
  • Fabricated dogs in order to push out dryer bushing.
  • Cleaned and wire wheeled pillow block mounting locations.
  • Grinded with sand-paper discs the inside of the dryer, for easier installation of the new drum.
  • Tapped and chased all holes for the new stub shaft.
  • Torqued all bolts to specification.
  • Cleaned and wire wheeled all stub shafts for better seating and sealing.
  • Wire wheeled all new bearing components and support rings due to excessive corrosion.
  • Moved cover plate out of the way to allow installation of the new drum.
  • Washed the inside of the dryer with degreaser.
  • Fabricated more slides for new drum install.
  • Fabricated lifting eyes and welded into key locations for lifting points.

West Coast Reduction RotaDisc Dryer Replacement

Vancouver, British Columbia

Replacement of a 50-ton RotaDisc dryer and associated work. The RotaDisc dryer is used to recycle food waste and-products from food producers, like farms, restaurants and supermarkets, transforming them into ingredients used in renewable energy, animal feed, soap and more. Work was conducted over a period of 24 days.

Scope Items
  • Site mobilization and safety course/orientation.
  • Rotor end bearing/saddle support removals.
  • 6×6 wood sliders installation and strapping.
  • Strip excess assemblies and place slider guide.
  • Install temporary floor angle braces (Peri-form jacks).
  • Jack rotor out of shell to temporary wall.
  • Arrange wood wall removal and crane schedule.
  • Sunday crane logistics and rotor removal.
  • Prepare new rotor with bearings and saddles torqued.
  • Clean old housing and align for new rotor installation.
  • Arrange wood wall removal and second crane schedule.
  • Sunday crane logistics installing new rotor into shell.
  • Reinstate wood temporary wall after new rotor install.
  • Slide rotor into internal bearings and finalize alignment.
  • Finish bolt up on housings and end plates.
  • Test rotate new rotor and test run all assemblies.
  • Final commissioning of rotor assembly and reconnections.
Additional Scope Items
  • Cut all the bolts around the end cover plate to allow for removal of the cover plate.
  • Cut 80% of the flights off for easier removal of the old Rotadisc drum.
  • Fabricated and welded L tabs to attach the timbers to.
  • Wire wheel and cleaned off the face of the end plate for a batter seal.
  • Welded imperfections on the cover plate and ground flat.
  • Wire wheeled pillow block flange and half rings, cleaned and wire wheeled contact locations.
  • Cut bearings off and retrieved needed components.
  • Fabricated locations in order to be able to place jacks.
  • Wire brushed and cleaned all hardware needed.
  • Fabricated dogs in order to push out dryer bushing.
  • Cleaned and wire wheeled pillow block mounting locations.
  • Grinded with sand-paper discs the inside of the dryer, for easier installation of the new drum.
  • Tapped and chased all holes for the new stub shaft.
  • Torqued all bolts to specification.
  • Cleaned and wire wheeled all stub shafts for better seating and sealing.
  • Wire wheeled all new bearing components and support rings due to excessive corrosion.
  • Moved cover plate out of the way to allow installation of the new drum.
  • Washed the inside of the dryer with degreaser.
  • Fabricated more slides for new drum install.
  • Fabricated lifting eyes and welded into key locations for lifting points.
Rotadisc end exposed and almost ready for removal.

Inside of dryer. Cleaned and lubed and ready for new disc drum.

End plate lifted into position.
Had to cut 90 percent of bolts with a torch.
New disc drum.
New disc drum in place.