Hydropower plants: Adopting effective flood prevention measures

10:52 | 23/08/2017 Energy

(VEN) - Vietnam Electricity (EVN) has adopted measures to handle flood prevention, especially at hydroelectric power plants, during the current rainy season and tropical stormsand depressions forecast for Vietnam.

adopting effective flood prevention measures

Flood prevention solutions

EVN has 37 hydroelectric power plants under its management, 35 of those in operation and two additional ones – Trung Son and Song Bung 2 - under construction. The number of hydropower plants under EVN management is small compared to the country’s total; however, they are large plants affecting sizable downstream regions. EVN has thus instructed its branches to adhere strictly to guidelines on reservoir and dam safety management and flood prevention, and to implement all reservoir operations regulations formulated by authorities.

According to a survey conducted at hydropower plants in the Central Highlands, the facilities there are adhering to Ministry of Industry and Trade guidelines and regulations on flood prevention.

Nguyen Minh Triet, the deputy director of the Buon Kuop Hydraulic Power Company which controls three plants in the Highland provinces of Dak Lak and Dak Nong, says a Steering Committee for Prevention, Preparedness and Response to Natural Disaster was established this year, with every member assigned specific tasks. The company has also formed a quick response team, and built and implemented specific plans on prevention, preparedness and response to natural disasters suited to the specific conditions at each plant.

The company sent a report on current reservoir safety status to relative departments, reviewed and submitted solutions on reservoir safety maintenance and flood prevention for downstream regions, and completed repair and maintenance of flood prevention construction and equipment. It also tested water supply valves at dams before the rainy season and stocked up on medicine, emergency equipment and other essential material.

Do Mong Hung, the head of the Safety Department and the permanent head of the EVN Steering Committee for Prevention, Preparedness and Response to Natural Disaster, said EVN had also proposed to the Ministry of Natural Resources and Environment to provide guidance on meteorological observation system at the reservoirs. He also suggested that the Ministry of Agriculture and Rural Development issue a guidance document on preparing reservoir flood maps for downstream regions, based on which hydropower plant management units will work with provinces while awaiting the government’s new resolutions on reservoir safety management.

Providing public information

adopting effective flood prevention measures

According to the EVN Steering Committee for Prevention, Preparedness and Response to Natural Disaster, to reduce damages in downstream regions especially in the flood seasons, different departments must work together on disaster forecasting andon providing information torelevant departments and local residents.

All hydropower plants under EVN management have signed an agreement and worked closely with local governments and steering committees on flood control measures. They have also worked with weather stations to obtain forecast data for reservoir operations, and organized meetings on flood prevention with local officials and residents.

Hydropower plants in particularly vulnerable locations in the Central Highlands, such as Song Tranh 2, A Vuong, Buon Kuop, Buon Tua Srah and Song Ba, have built flood warning systems or plant operation warnings and provided information on flood regions and flood avoidance for downstreamresidents.

Websites supplying weather forecast and reservoir operation information have been developed and gone online. Steering committees on prevention, preparedness and response have been equipped with screensand portable tablets providing meteorological data and reservoir operation information.

Some power plants in the Central Highlands have proposed that local governmentsissue information and guidance to prevent children from drowning. For example, the Buon Kuop Hydraulic Power Company has asked its youth union to build programs with local governments and schools to disseminate information on drowning prevention.

So far, in light of the four storms that have made landfall in Vietnam this season with relatively minor damage, all these prevention measures appear to have been effective.

In order to ensure the continued effectiveness of prevention, preparedness and response measures, EVN deputy general director Ngo Son Hai has asked relevant departments to boost reservoir safety inspections, continue to review and address weaknesses and work with local governments to review flood prevention regulations. In particular, local authorities are instructed to ensure that there is always someone on duty 24/7 to handle initial response, and to provide mass media with updated information on flood and flood prevention.

Dinh Dung