Vietnam-based infrastructure company Cavico Corporation has released construction updates on its work at the Ta Trach, Dambri and A Luoi hydro power plants.

At the Ta Trach reservoir, Cavico has used the New Austrian Tunneling Method (NATM) to excavate and construct a 295m long, 17.45m high diversion tunnel. The Ta Trach Reservoir is located on the upper part of Huong (Perfume) River in Duong Hoa village, Huong Thuy district, Thua Thien Hue province. Ta Trach Reservoir is the second largest project in the central region of Vietnam and is being developed by Hydropower Management No. 5, part of the Ministry of Agriculture and Farming.

For the Dambri hydro power Plant, Cavico completed the service road that leads traffic from the main road to the construction site and a 33m long 7m wide bridge. The plant is located 87 miles northeast of Ho Chi Minh City in Da Huoai village, near Da Teh city in Lam Dong province of Vietnam. The $80M plant is owned by Southern Hydropower Joint Stock Company and will have 75MW of capacity.

Cavico used a Robbins 61R to successfully drill a vertical shaft that is 128m long and 4.54 diameters wide at the A Luoi hydro plant. Owned by Central Hydropower Joint Stock Co., the plant is located in Thua Thien Hue province. It will have a capacity of 170MW and is expected to become operational at the end of 2012.