05.03.2013 Views

EIA: Lao PDR - Asian Development Bank

EIA: Lao PDR - Asian Development Bank

EIA: Lao PDR - Asian Development Bank

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

<strong>EIA</strong> of The Nam Ngiep 1 Hydropower Project Draft Report: Chapter 2<br />

Figure 2-10 Typical Operation case of 230 m 3<br />

/s 16-hour peak generation at the main<br />

power station.<br />

Operation of the main dam would intentionally release water downstream during<br />

emergency events such as drought or flooding when both turbines are unable to release water<br />

because of those unforeseen events. Spillway gates would be operated during flooding in<br />

accordance with the spillway gates operation rules to minimize downstream impacts. Before<br />

operating the spillway gates, information regarding expected water level increases would be<br />

disseminated to those living downstream in accordance with the spillway gates operation<br />

rules and the emergency action plan.<br />

2.6.2 OPERATION OF MAIN POWER STATION<br />

(1) Plant Discharge<br />

The NWL and MOL of the main dam will be at EL320.0 m and EL 296.0 m respectively.<br />

Drawdown of the reservoir will normally occur during the dry season, with filling occurring<br />

during the rainy season as shown in Figure 2-11. When the reservoir water level reaches<br />

NWL during floods, the spillway gates will be operated.<br />

2-17

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!