Provision of Construction Services for the Completion of Main Distribution Pipeline between Geed Deeble and Hargeisa (Lot 1) , Hargeisa Urban Water Supply Upgrading Project (HUWSUP)

Item Description:

The United Nations Office at Nairobi (UNON) is seeking Expressions of Interest (EOI) from competent and qualified companies for the provision of water infrastructure construction services for the completion of the Main Distribution Pipeline between Geed Deeble and Hargeisa (Lot 1), under the Hargeisa Urban Water Supply Upgrading Project (HUWSUP). The work will take place in Hargeisa, Somaliland. The scope of the tender to be issued from the subject EOI comprises the completion of the main distribution pipeline (600mm DI) that connects the existing Chinese reservoir in Hargeisa to the new Geed Deeble Pumping Station (23km North of Hargeisa), in order to enhance the capacity of the system and accommodate a significant increase in the volume of water produced for Hargeisa City. The Lot 1 pipe installation and related civil works were completed by approximately 85% under a different Contract, and the present scope covers the completion of the remaining 15% of the pipeline works, as outlined below. The scope includes, but is not limited to the following works: LOT 1: – Installation of 600mm Ductile Iron (DI) pipe, c/w excavation, backfill material, compaction, pressure testing: 1.0km. – Re-installation of already laid 600mm DI pipe, with adequate backfill material, compaction, pressure testing: 0.9km). – Video Inspection of flooded pipe sections and wadi encasements: approx 1.0km. Cleaning of mud-filled sections as required. – Construction of 4 wash-out (WO) chambers. – Completion of 7 ongoing chambers 4 WO, 2 Metering Chamber (MCH), 1 Wellfield Connection Chamber (WC). – Finishing of 16 chambers (ladders, covers, manholes, etc.); all concrete works completed to standard – Pressure Testing of 23 km main pipeline. – Site clearing, disinfection, final testing and commissioning. – Associated works. For the implementation of the Lot 1 works, the UN will provide the Contractor with required quantities of DI standard straight pipes (600mm), valves and fittings, covering all required materials to be laid. Any possible required unforeseen balance of materials is to be procured by the Contractor. The UN reserves the right to split all services by Lots and/or packages. Additional details, specifications and terms of reference shall be provided in the tender document to be issued subsequent to this EOI. Interested vendors may forward their Expressions of Interest (EOI) along with the signed vendor forms to margaret.muchuku@un.org with a copy to pdnairobi@unon.org before the closing date indicated on this document. All EOI submissions should be sent via email, citing the EOI reference number and title in the subject line.

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