Pipelines Works for the Borehole

• Country: Yemen
• Summary: Pipelines Works for the Borehole
• YET Ref No: 53724693
• Deadline: 15 Jun 2021
• Financier: Self Financed
• Purchaser Ownership: Government
• Tender Value: Refer Document
• Notice Type: Tender
• Document Ref. No.: LP-ALD-21-58/LOT 1
• Purchaser's Detail:
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• Description:
• Tenders are invited for Pipelines Works for the Borehole. Submersible installation pipes: Supply and installation of 2-inch high-pressure galvanized iron pipes (G.L) in according to the BS-1387, and BS-21 to working with 25kg / cm2, and 6m length for each single pipe, flange pipes from both sides (D / F) this including nuts and the bolts, including all parts meeting BS 1740 standards to connect the pump to the pumping line, and all requirements to complete the item. Cover for borehole: Supply and installation, inspection, and operation of a well cover of steel rust resistant with a thickness of 20mm and diameter 10 inch is equipped with a pipe length of 60cm and diameter 3 Inch heavy thickness of not less than 4.5mm connecting with the end of the submersible flange of 40cm of steel and ends with a tooth And a 90-degree elbow and the lid of the borehole with the openings of the diameter of the inch, for the purpose of entering the submersible and sensitive cable and measuring meter level and the openings can be installed for protection. Drawing page No (2-26) Supply and implementation of inspection hatch for the borehole opening using hollow masonry blocks with dimensions 20cm x 20cm x 40xm, internal net dimension (1.5m × 1.5m) and net depth 1m with the implementation of a layer of ordinary concrete thickness of 10cm and the installation of the cover of good granulated iron thickness of 3 mm and a circular belt of steel thickness of 3 mm with anti-rust paint to the cover and lock hinge, and cement cladding inside and outside and cost including filling around the room - and all necessary according to attached drawings. Supply and installation of Chlorine injection unit for the distribution tank with accessories according to the required technical specifications and appropriate with the specifications of the borehole and pumping unit and conduct the chlorination process. The automated chlorine injector and chlorine will be provided by Medair. Chlorinate the well with 50mg/l solution, and leave in the well for 12 hours. Provide and installation of 2'' GL pipe to connect the source (Threaded connection method) on the normal ground to the main distribution tank stand with distance of 120m long. The work includes all the necessary connections and elbows to finish the work. The whole system should be tested for leaks prior to handover of the project. Supply and install of concrete supports for the in-let and the out-let G.L pipes, concrete mixing (1:2:4) to fix the water transmission line from the well to the tank. Diameter 2 inches, supports dimentions is 50cm * 50cm , and the height according to the ground surface not less than 40cm, and the support MUST be installed 1m before or after the pipes connection (as per the exact normal ground nature), to avoid negative moment. They will be distributed according to the curves, the slope and the natural ground nature. The price includes excavation, timber works, steel works, casting works and painting (white paint) and all necessary works to fulful the work effectively. Supply and implementation of inspection boxes for non-return valves and check valve with dimensions hollow masonry blocks 20cm x 20cm x 40xm, internal net dimension (1m × 1m) and net depth 90 cm with the implementation of a layer of ordinary concrete thickness of 10cm and the installation of the cover of good granulated iron thickness of 3 mm and a circular belt of steel thickness of 3 mm with anti-rust paint to the cover and lock hinge, and cement cladding inside and outside and the valves shall be high from the floor of the inspection with a distance of not less than 10cm so as to facilitate replacement and maintenance and cost including filling around the room - and all necessary to complete the item. Supply and Install of metal board (Stand Nameplate) including the name of the project, the logo of the Medair Organization the dimension of the Metal board should be of (1.3m*1.4m) and 3mm thickness with a total height of 2.20m in which it should be installed and fixed within a concrete footing installed in an appropriate place according to instructions of the supervisor engineer for chosing the location. The pipes will be 2 inch.
• Documents:

 Tender Notice