Tehran- Karaj Water Transfer Project

The tunnel was built in two phases of 16 km and 14 km:

A- The operations carried out in the first phase of this project include:

• Assembling and installation the machine in the form of Field Service Company

B- Operations carried out in the second phase of this project include:

• Assembling Full Main Drive as per below:
• Repair and service of all main electric motors
• Inspect the Pinion Bearings and ensuring from their health
• Replacing Main Drive
• Bearing test and original gear
• Advice on Main Bearing Hourly Estimates during the First Phase of the Project and Decisions to Provide Drilling with Primary Bearings
• Procurement of spare parts and consumables during project implementation
• Installing gravel pump injection system simultaneously with drilling from inside Tuil Shield
• Fixing the problem of leaking rings of the machine by installing the retaining arms of the rings
• Design and installation of a brush for Tuil Shield to prevent material entering the shield
• Providing technical advice on how to inject and seal rings