A package of tunnelling works is to be done by Indian contractor Hindustan Construction Co (HCC) as part of major civils contract on the Punatsangchhu-I hydro project in Bhutan.
HCC is to excavate the headrace tunnel, surge shaft, butterfly valve chamber,
pressure shafts, powerhouse and tailrace tunnel on the project. Combined with hydro-mechanical works, the contract package is valued at US$137M and is to be completed in five and a half years.
Separately, Larsen & Toubro (L&T) is building a diversion tunnel as part of the dam construction works package.
The plant is being built on the river Punatsangchhu in the west of Bhutan. The project is the first of 10 major hydro schemes that India is helping to develop in the country over the next 10 years.
In India, HCC was also recently awarded contracts involving tunnelling works on the Kashang, Kishanganga and Teesta VI hydro power projects.
For the Kashang project, in the state of Himachal Pradesh, the contract involves excavation of the headrace tunnel, an underground balancing reservoir, an underground powerhouse and a tailrace tunnel.
In addition, the package includes various of other civil works. The client is Himachal Pradesh Power Corp.
National Hydroelectric Power Corp (NHPC) awarded a turnkey contract to an HCC-led JV to build a 23.5km of headrace tunnel and an underground powerhouse as part of the civil works for the Kishanganga project. The plant is being
built in Jammu & Kashmir,
and the package also involves dam works.
