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HQ - WATER INTAKES AND VACUUM SYSTEM - BEAUHARNOIS STATION

Project category

Maritime and Municipal

Location

Beauharnois, QC

Value($)

35 000 000

Realisation mode

Partnership with HMI Construction Inc.

Customer

Hydro-Québec

Year

1995-2017

 

Additional informations

Repairing the water intakes and vacuum systems (36 groups) of the Beauharnois generating station

Main Work Performed

Civil Work

  • Installation of a temporary shelter and scaffolding
  • Concrete demolition and debris evacuation
  • Surface repairs
  • Drilling, reinforcement, concreting and form stripping
  • Installation and injection of anchors
  • Grout injection behind embedded parts

Underwater Work

  • Inspection of the under water concrete walls before installing the beams upstream and downstream
  • Installation and dismantling of temporary beams upstream and downstream
  • Dismantling the former valves guide with underwater cutting torches
  • Installation and alignment of the new embedded parts
  • Drilling, formwork, concreting and form stripping for the embedded parts of the guide
  • Correction of sills discontinuities and adding plates and shims by grinding
  • Repair and grinding of lintels
  • Installation and injection of a 3 m concrete anchors
  • Installation of the template to measure the underwater guides