German
Linthal 2015 project; Linth-Limmern pumped storage plant Pipelines for cooling water system
Project description:
Engineering, design, prefabrication and assembly of a total of over 2000 metres of pipelines for the primary and secondary cooling circuits of the cooling water system.
Technical data:
Diameters and wall thicknesses of the pipelines designed and specified in accordance with EN 13480-3 and EN 10217-7. For the design of the primary cooling circuit, a maximum operating pressure of 40 bar (PN 40) at a water temperature of 20 °C and a welding factor of 0.85 were taken into account.
For the design of the secondary cooling circuit, a maximum operating pressure of 10 bar (PN 10) at 20 °C and a welding factor of 0.85 were taken into account.
- All pipelines were made from 1.4404 material and delivered.
- Pipe dimensions from DN 65 to DN 600
- Wall thicknesses from 2 to 12 mm
- Assembly took place at the power station located inside a cavern at an altitude of approx. 1700 metres above sea level.
- Non-destructive tests (VT, PT, UT, RT and pressure tests) were conducted at the Sennwald plant and on-site.