The inspection of forced conduits allows the owners of hydroelectric facilities to assess the viability of their anticorrosion protection, as well as the renewal or maintenance operations to be carried out and their frequency.

It applies to the following items :

  • forced conduit (diameter 600 mm to 3,000 mm)
  • cased well (diameter 600 mm to 3,000 mm)
  • vertical well (diameter 600 mm to 2,000 mm)
  • collecting drain – flow control valve


  • consultation of archives
  • feasibility study of the inspection
  • internal and/or external visual inspection of the anticorrosion coating
  • measurement of the thickness of the coating

Specific skills

The HYDRO Exploitation Engineering Department has :

  • proven regular experience of this type of work
  • specific know-how in relation to corrosion (engineers who are experts in materials science)
  • equipment dedicated to anticorrosion inspection(hoists, measuring equipment, etc)
  • experts qualified to work from ropes

Client benefits

Clients who choose this service benefit from :

  • a clear vision throughout of the work to be undertaken
  • enhanced planning in terms of work and investment
  • specific know-how maintained by regular implementation
  • a single intermediary for an all-inclusive service

Rue de l’Industrie 10, 1951 Sion


HYDRO Exploitation SA
Rue de l’Industrie 10
CP 315 - CH-1951 Sion
Contact us
HYDRO Exploitation SA
Rue de l’Industrie 10 CP 750 - CH-1951 Sion +41 (0)27 328 44 11
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