Surface & Ground Water Networks Intervention – Qatar South Catchment Zone, Qatar

Surface & Ground Water Network Intervention Qatar South Catchment Zone – Al Thumama, Qatar

Surface & Ground Water Network InterventionProject Summary

This project was executed as part of the Qatar South Catchment Zone Framework, focusing on critical intervention works within live surface and ground water foul sewer networks. The scope involved the safe removal of an existing DN1000 steel plug and the installation and commissioning of a DN1000 penstock system to restore and control network flow.


Scope of Work

  • Removal of DN1000 steel plug from CB2A shaft
  • Installation of DN1000 penstock with spindle, gearbox, and actuator
  • Confined-space access preparation and scaffolding works
  • Mechanical alignment, fixation, and structural securing
  • Concrete reinstatement and sealing works
  • Functional testing and commissioning
  • Final inspection and handover

Execution Highlights

  • Operations conducted within a live sewer network under strict safety controls
  • Use of certified lifting equipment, scaffolding systems, and mobile crane
  • Precise mechanical alignment to ensure smooth and reliable operation
  • Full compliance with QHSE standards and authority requirements

Testing & Commissioning

  • Operational testing of penstock opening and closing
  • Verification of actuator performance and sealing integrity
  • System readiness confirmed prior to handover

Project Outcome

The project was completed safely, efficiently, and in accordance with approved engineering specifications.
The installed DN1000 penstock system is fully operational, providing effective flow control and long-term reliability for the surface and ground water sewer network.