Water from the upper reservoir is sent to the 1, 200 MW underground power station near the lower reservoir through headrace / penstock pipes.
32.
Preparatory work on the project began in August 2002 and construction on the K�rahnj�kast�fla Dam and headrace tunnels for the H�lsl�n reservoir began in April 2003.
33.
Water from the upper reservoir is sent to the 1, 200 MW underground power station down near the lower reservoir through headrace / penstock pipes.
34.
The station consists of a tall gravity dam which diverts water through a long headrace tunnel to the power station, which contains six Pelton turbine-generators.
35.
Water from the upper reservoir is sent to the 1, 200 MW underground power station down near the lower reservoir through four long headrace / penstock pipes.
36.
Water from the upper reservoir is sent to the 1, 000 MW underground power station down near the lower reservoir through two long headrace / penstock pipes.
37.
Before each of the headrace tunnels from the H�lsl�n reservoir or Ufsarl�n pond reach the underground power station, they both join to form a single combined headrace tunnel.
38.
Before each of the headrace tunnels from the H�lsl�n reservoir or Ufsarl�n pond reach the underground power station, they both join to form a single combined headrace tunnel.
39.
There were also two channels located between the viaduct and the waterfall ( one on each side ) referred to as sluices, headraces and flumes in various maps.
40.
They are sloped criss-crossing tunnels which connect the five water tunnels ( four headrace and one drainage ) to the road tunnels beside and slightly above them.
