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Subterranea Scotia

Mullardoch Dam & Power Station

Mullardoch Power Station sign


The drawing below (click on the image for the high-resolution version) gives a good idea of the general arrangements at Mullardoch:

Mullardoch power station, general arrangement drawing

Illustration: Mullardoch power station, general arrangement
Illustration by: Photo of NOSHEB drawing by Mike Ross



The surface structures of Mullardoch power station. The high building to the left surmounts the access shaft; from inside there a ladder can be descended to the power station. The I-beam is for the shaft hoist. The sunken structure to the left is primarily the winch house, but also contains lift which is the normal means of access, and the station batteries.

Mullardoch power station

Photo: Mullardoch power station
Photo by: Mike Ross



Descend the steps, through the door, into the sunken building - the winch house for the control gate which regulates flow of water into the power station. To the left from this point, a short passageway leads to the lift in the access shaft.

Mullardoch power station

Photo: Mullardoch power station
Photo by: Mike Ross



Returning outside, ascend the short metal ladder and through the door at the top of the shaft. The ladders can be seen, and the lift mechanism. Shaft drops straight to the floor of the power station - it's around 100ft.

Mullardoch power station

Photo: Mullardoch power station
Photo by: Mike Ross



OK... back into the low building, into the lift, down the shaft. Lift doors open... we're in the small, simple main chamber of the power station. Local control panel to the right. On the extreme left, the horizontal-shaft generator, 2.4MW. Below floor level, accessed by the short ladder visible in the centre, is the top of the vertical-shaft Francis turbine. The deeply flanged & webbed blue object in the middle is a bloody great gearbox which turns the drive through 90 degrees.

Mullardoch power station

Photo: Mullardoch power station
Photo by: Mike Ross



Moving forward and looking down the short ladder below the gearbox... the turbine shaft and guide vane actuators.

Mullardoch power station

Photo: Mullardoch power station
Photo by: Mike Ross



Turning and looking back, the lift cage and ladders at the bottom of the shaft. The blue cabin to the right of the lift is for sound-deadening and contains a telephone; what with the turbine, the gearbox, and the generator, it's bloody noisy down there.

Mullardoch power station

Photo: Mullardoch power station
Photo by: Mike Ross



Looking up at the point where the shaft penetrates the roof of the power station.

Mullardoch power station

Photo: Mullardoch power station
Photo by: Mike Ross



...and looking directly up the shaft to the crane beam in the surface building.

Mullardoch power station

Photo: Mullardoch power station
Photo by: Mike Ross



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Last updated 8th May 2004
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