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On January 1, 2021, Central Hydropower Joint Stock Company (EVNCHP) There were reports to the Central Steering Committee for the Prevention and Control of Natural Disasters, the Ministry of Industry and Commerce, the Ministry of Natural Resources and Environment, the National Center for Cargo Dispatch, Thua Thien – Hue province about the water leakage Of the road. Steel-lined tunnel of A Luoi hydroelectric power station in Hong Ha commune, A Luoi district, Thua Thien – Hue province.
The amount of water, soil, and rock that flowed after the incident.
EVN reportCHP said The 177 engine tunnel water incident on the main roof in front of the plant with a flow of approximately 9 m3 / s occurred at 8:40 am the same day. VAt this time, the A Luoi hydroelectric plant is transporting 2 units with a total capacity of 20 MW. EVNCHP confirmed the problem causing the water to run over the factory flooded the factory yard by about 30 cm, carrying mud and rocks, but did not cause harm to people or affected the surrounding residential areas.
As soon as the problem was detected, the factory notified the dispatcher, stopped the machine and cut off the power urgently. Factory shock equipment and on-site equipment and machines were mobilized to treat, prevent water from flowing to floors and unit, and minimize damage. At the same time, warn people and vehicles not to approach the problem location.
The amount of mud flowing down
EVNCHP said they had tWithout informing the design consultant, the construction contractor goes to the inspection site to offer a solution when tunnel inspection conditions allow. On the other hand, the organization monitors and implements measures to guarantee the safety of the plant.
According to EVNCHPCurrently, the tunnel inspection is not yet qualified, so the cause of the incident has not been determined and the general inspection of the project has not been determined. It is expected that it will take a month to fix the above problem.
Representatives of the Department of Industry and Commerce of Thua Thien – Hue province said the incident occurred at the end of the tunnel that leads the flow through the mountain to create pressure to generate electricity, about 300 meters from the plant. Previously, this location appeared to be slipping due to the impact of flooding.
After the incident, the plant closed the valve to receive water from the reservoir in the tunnel in Phu Vinh (A Luoi) commune, so the amount of water returned was less.
The Department of Industry and Commerce of the province of Thua Thien – Hue applied for EVNCHP takes steps to ensure the safety of workers and device. In the next time, when the water is withdrawn from the tunnel, there will be a plan to assess and evaluate the level of safety and have solutions to overcome the problem.
A Luoi hydroelectric plant has a capacity of 170 MW, an average annual production of 649 million kWh. It started in 2007 and operated electricity generation in May 2012. A Luoi Hydropower has a reservoir located in Hong Thuong Commune, A Luoi District and has a discharge outlet on the Se Kong River – Laos. To generate electricity, water from the lake is conducted through the gate in Phu Vinh (A Luoi) commune into the nearly 12 km long Truong Son tunnel system to create pressure on the factory turbine in the Hong Ha commune.
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