As Part Of The Construction Of A New Railway Workshop In Rodange, It Is Planned To Equip The Interior Tracks With Retractable 25Kv 50Hz Catenaries. This Is A Non-Crossing Workshop Made Up Of 5 Tracks: • 2 Tracks Equipped With A Work Zone • 3 Tracks Equipped With Two Work Zones (With Independent Power Supply For The Two Zones) This Mission Includes The Design Of The Catenaries Retractable And The Control System Which Must Be Interfaced With Roof Access, Overhead Crane, Lifting Installations, Signals. These Installations Must Be Certifiable (According To The Applicable Standards En50126, En50128, En50129, En13849, En13849-1 And En13849-2) By An Isa. The Successful Bidder Must Then Provide The Necessary Documentation (Safety Plan, Risk Analysis, Safety File, Etc.) To The Independent Body In Charge Of This Certification.