Hydroelectric production equipment is largely composed of joint welded parts. The entire welding process is a special process requiring a high level of skills and special monitoring from design right through to production.

This will insure the sound operation and safety of the installations.
The Sion-based centre of expertise assures technical support and follow-up during each phase, from design to monitoring of installations.


  • checking and inspection of equipment
  • in accordance with EN.ISO.17635, EN.ISO.17638, EN.ISO.17639, EN.ISO.3452-1 and CCH70-3 standards
  • analysis of fitness for service in accordance with API.579 or BS.7910
  • research and design carried out in accordance with EN.13445, Eurocode EN.1993-1, Directives 97/23/EC and 95/16/EC, EN.1315
  • fabrication in accordance with ISO.3834-2

Specific skills

Our experts can :

  • provide technical support and/or training in the sectors of welding metallurgy, design, industrialisation and production of joint welded parts and lifting devices
  • performing or validating the WPS, welding specifications, product ranges as well as procedures or files relating to the production of joint welded parts
  • validate the design and dimensions of the welds
  • of joint welded parts and of lifting devices
  • supervise welding operations on location or on site
  • supervise the production of joint welded parts in the workshop
  • inspect joint welded parts
  • calculate the cracks propagation in joint welded
  • parts and perform an analysis of associated risks
  • performing and/or overseeing projects relating
  • to continuous improvement, cost reduction or welding automation

Client benefits

You will benefit from :

  • a complete range of services performed by experienced, qualified experts, who are few and far between in Switzerland
  • relevant information on the current condition and lifespan of the joint welded parts in operation
  • advice on repairs or potential improvements
  • a dedicated contact person offering a full range of services

Rue de l’Industrie 10, 1951 Sion
HYDRO Exploitation SA
Rue de l’Industrie 10
CP 750 - CH-1951 Sion
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