U.S. seeks irrigation tunnel rehab at 33-MW Kajaki in Afghanistan

The U.S. Army Corps of Engineers seeks bids for rehabilitation of irrigation tunnel works at 33-MW Kajaki Dam in Afghanistan. Bids are due November 3.

In 2011, the Corps took bids for rehabilitation of an irrigation intake structure and piezometers and dam monitoring instrumentation at the project. Kajaki Dam is on the Helmand River about 90 kilometers northwest of Kandahar. The project supplies hydropower, irrigation storage, and flood control. Built in the 1950s by Morrison-Knudsen, Kajaki has suffered from 30 years of neglect.

The Corps seeks bids to supply design, construction, and equipment to rehabilitate irrigation tunnel works that extend from the intake structure downstream to the outlet valve house. Water flows through the irrigation tunnel to a concrete plug where the water is distributed to three penstocks. Each penstock line is equipped with a roto valve just downstream of the plug and a hollow jet valve at the end of the line.

The contractor is to design components including intake structure, three emergency closure valves, and three flow regulating valves. It is to refurbish the three 84-inch irrigation emergency closure roto valves, replace the three 84-inch flow regulating hollow jet valves, replace valve actuators, install a new electric actuator system and controls for the jet valves, replace the hydraulic system for the actuators on the roto valves, evaluate the lined conduit and overhead service crane, design and replace the valve house hydroelectric generating unit, and perform other work.

The work is to require 600 days at a cost of $25 million to $100 million.

A solicitation notice may be obtained from the Federal Business Opportunities Internet site, www.fbo.gov, by entering Solicitation No. W5J9LE13R0002 in the "Keyword/Solicitation #" box.

Bids are due November 3. For information, contact Nicholas Emanuel, Contract Specialist, U.S. Army Corps of Engineers, Kandahar District, 0003 HQ HHC ARCENT Kandahar, OEF Multi-class SSF AWCF Kandahar, APO AE, AF 09355; (1) 540-667-6581; E-mail: nicholas.p.emanuel@usace.army.mil.

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