Maentwrog Pipeline

Maentwrog Pipeline

Dual high-pressure pipes above Maentwrog Power Station, Coed Camlyn

Date

8 December 2012
Location

Maentwrog Dam to
Maentwrog Power Station

SH 67455 37711 / 52.92112°N, 3.97334°W to
SH 65365 39561 / 52.93650°N, 4.00473°W

Information

The pipeline carries water from Llyn Trawsfynydd the two miles from Maentwrog Dam to Maentwrog Power Station. The initial section from the dam is a concrete-lined tunnel, as is another section through the top of Pen y Foel above the power station. Connecting the two tunnels is a mile-long stretch of low-pressure steel pipe. Dual high-pressure pipes then convey the water in its final descent from a valve house at Pen y Foel down to the power station below. In its journey from reservoir to power station, the water loses a height of 180m.

Maentwrog Pipeline

Maentwrog Pipeline

Maentwrog Pipeline

Low-pressure pipe

Maentwrog Pipeline at Tyn-y-Coed

Maentwrog Pipeline at Tyn-y-Coed

Maentwrog Pipeline

Maentwrog Pipeline

Pen y Foel Surge Shaft

Pen y Foel Surge Shaft

Pen y Foel Surge Shaft

Pen y Foel Surge Shaft. When the valves are opened to release water with a high head of pressure, allowing it to flow up a tall vertical shaft close to the lower end of the pipeline helps to reduce the huge sudden surge in pressure at the turbines.

Pen y Foel Surge Shaft

Pen y Foel Surge Shaft

Coed Camlyn, above Maentwrog Power Station

High-pressure pipes, Coed Camlyn, above Maentwrog Power Station

Coed Camlyn, above Maentwrog Power Station

High-pressure pipes, Coed Camlyn, above Maentwrog Power Station

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7 thoughts on “Maentwrog Pipeline

  1. Pingback: Maentwrog Power Station « GeoTopoi

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