The Essar team executing the Earthen Dam Works of the Tuirial Hydro Power Project in Mizoram, received a Certificate of Appreciation from their principal client, NEEPCO, for achieving 2 million man hours without LTI (Lost time Incident) at the project site, in January this year.
Presenting the Certificate to the EPIL team, PK Bora, Head of Project, NEEPCO, and his team were very appreciative of the safety culture being maintained by the Essar team throughout the year.
Key elements of EPIL’s safety practices:
- Daily toolbox talk
- Job specific safety training
- Risk assessment of different activities prior to start of work
- Periodic safety awareness activities
Located in the geographically challenging North Eastern region of the country, the dam project is part of the 2 x 30 MW Tuirial Hydro Electric Power project.
Mizoram, July 2014
(Excerpts from the dairy of CV Prasad, Project Director–Tuirial Hydropower Project, Essar Projects)
The Scope of Work of the Tuirial Hydropower Project contract awarded to Essar Projects covers:
- Construction of the Pre-cofferdam, Downstream Cofferdam, Upstream dam and the Main dam.
- Construction of a concrete Spillway involving 180,000 m3 of excavation and 92,000 m3 of concrete.
- The main dam is of 250 metres length and 75 metres height and involves filling of 3,000,000 m3 of earth and rock.
The project is situated at a remote location in Mizoram and logistics was the primary challenge. The nearest city is Silchar in Assam, about 80 kilometres away, and mobilization of construction equipment was a tough task. Since no trailer was able to reach the location, most of the earth moving equipment was unloaded 40 kilometres from the site and driven to the site one-by-one.
A common factor for all Hydropower Projects, this project also threw up a lot of geological surprises. The geology of Mizoram is unpredictable and within a small distance, the nature of strata found varies drastically. The first quarry earmarked for us by the client was located close to the dam site. However, soon after we started work, we realized that it did not have the quality of rock required. Keeping in mind the timeline of the contract we quickly helped identify an alternate quarry seven kilometres from the project site with the desired qualitative material for the construction. It is from this quarry that the aggregate and filter media required for the Dam and Spillway are sourced.
The staff and operators’ quarters and other buildings were constructed with the locally available materials like naturally available wood, and use of bamboo mats with plastering as wall-panels, similar to the commonly seen houses of Hmar tribals in Mizoram. The only water source at project site is the Tuirial river which is turbid during monsoons. Learning from the locals, the project site started harvesting rainwater to meet the site requirements.
This is the largest power project being executed in the state of Mizoram, and the team is acutely conscious of how critical this project is to the state’s development. Needless to say, safety and safe practices on site is paramount.