hydroelectric complex
The reservoir structures and installations that use water power to produce electricity.
spillway gate
Movable vertical panel; it is opened to allow the reservoir’s overflow to pass through.
crest of spillway
Cement crest over which the reservoir’s overflow discharges when the spillway gates are opened.
machine hall
Area that houses the generator units used to produce electricity.
power plant
Plant that uses an energy source, here water, and converts it into electricity.
diversion tunnel
Underground conduit that diverts water during construction.
training wall
Wall that separates the spillway chutes; it is used to direct the water flow.
afterbay
Area of the watercourse where water is discharged after passing through the turbines.
bushing
Device that allows the conductor to pass through the wall of the transformer and separates it from the latter.
dam
Barrier built across a watercourse in order to build up a supply of water for use as an energy source.
control room
Area that contains the various control and monitoring devices required for the production of electricity.
log chute
Structure that allows floating wood to travel from upstream to downstream of the dam.
gantry crane
Hoisting device in the form of a bridge; it moves along rails.
reservoir
Basin formed by the construction of a dam; it holds back a very large volume of water so that the flow rate can be controlled.
spillway
Channel that discharges excess water from the reservoir during flooding to avoid submerging the dam.
top of dam
Upper part of the dam; it rises above the water level of the reservoir by several yards.
headbay
Part of the reservoir immediately in front of the dam where the current originates.
penstock
Channel that carries water under pressure to the power plant’s turbines.
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