Hinterrhein power stations Renovation of cooling water and draining systems including valves, pumps and instruments

Project description:

Engineering, on-site measurement, design, removal and disposal of existing cooling water pipelines, prefabrication and assembly of a total 2000 metres of pipelines for cooling water systems and draining devices for the following hydroelectric facilities:

  • Ferrera; 85 MW turbine power
  • Bärenburg; 220 MW turbine power
  • Sils; 245 MW turbine power
  • Thusis; 4.6 MW turbine power

In addition, we delivered and assembled all cooling water and draining pumps, as well as all valves and the entire instrumentation.

Technical data:

  • All pipelines were made from 1.4404 material and delivered.
  • Pipe dimensions from DN 65 to DN 500
  • Wall thicknesses from 2.6 to 4 mm
  • Pressure rating PN 10 and PN 16
  • Assembly took place at the individual facilities.
  • Non-destructive tests (VT, PT, UT, RT and pressure tests) were conducted at the Sennwald plant and on-site.
  • Construction year(s) 2011–2014
  • Owner Kraftwerke Hinterrhein AG, 7430 Thusis, Switzerland