Passy plant in Haute-Savoie, France

Building of a steel penstock belonging to the EDF hydroelectric plant of Passy in Savoy (France) – Execution and construction design

Steel penstock of inner diameter of 2400 mm and thickness between 13 mm and 26 mm, of the following types:

• First part in the open air, with blocked vertices and intermediate support pins, without movement joints.
• Second part in a vertical pit, approximate length 230 m, with the pipe grouted in the rock.
• Third part in a sub-horizontal tunnel, approximate length 390 m, with blocked vertices and intermediate support pins, without movement joints.
• Terminal distribution element to production groups, grouted in concrete.

Length of approximately 850 m and hydraulic drop of about 395 m.

Services provided: Execution design and construction drawings for steel works

Client: PARESA S.p.A.

Site: Municipality of Passy, Arrondissement de Bonneville, Haute-Savoie

Years: from 2013 to 2018

Cost of works: 11.9 million Euros