Bang Lang Dam

Bang Lang Dam
Dam location in Thailand
Country Thailand
Location Yala Province
Coordinates 6°9′23″N 101°16′25″E / 6.15639°N 101.27361°E / 6.15639; 101.27361Coordinates: 6°9′23″N 101°16′25″E / 6.15639°N 101.27361°E / 6.15639; 101.27361
Purpose Multi-purpose
Status Operational
Construction began July 1976 (1976-July)[1]
Opening date 27 September 1981 (1981-September-27)
Construction cost US$133.13 million[2]
Owner(s) Electricity Generating Authority of Thailand (EGAT)
Dam and spillways
Type of dam Earth fill dam
Impounds Pattani River
Height (foundation) 85 m (279 ft)
Length 430 m (1,410 ft)
Elevation at crest 120 m (390 ft)[2]
Width (crest) 10 m (33 ft)
Reservoir
Creates Bang Lang Reservoir
Total capacity 1,420,000,000 m3 (5.0×1010 cu ft)
Catchment area 2,080 km2 (800 sq mi)
Power station
Operator(s) Electricity Generating Authority of Thailand (EGAT)
Turbines 3 x 24 MW Francis-type
Installed capacity 72 MW
Annual generation 200 GWh
Website
Bang Lang Dam at EGAT

The Bang Lang Dam (Thai: เขื่อนบางลาง), also known as the Pattani Dam, is a multi-purpose hydroelectric dam in the Bannang Sata District of Yala Province, Thailand. It was the first multi-purpose dam developed in Thailand's southern region. The dam impounds the Pattani River. The dam and its accompanying power plant were developed as part of the Pattani Project.[2]

Description

Bang Lang Dam is an earth core rockfill dam. It is 430 m (1,410 ft) long and 85 m (279 ft) high. Its reservoir has a maximum storage capacity of 1,420,000,000 m3 (5.0×1010 cu ft) with a catchment area of 2,080 km2 (800 sq mi).[3]

The dam is considered multi-purpose supporting electricity generation, irrigation, flood control, fisheries and recreation activities.[2]

Power plant

The dam's power plant has three hydroelectric Francis turbine-generating units, each with an installed capacity of 24 MW.[4] A nearby mini hydroelectric project at Ban Santi has a 1.275 MW generating unit and is also part of the Pattani Project. The combined annual power generation is 200 GWh.[2]

References

  1. "Banglang Dam" (in Thai). Electricity Generating Authority of Thailand (EGAT). Archived from the original on 14 July 2014. Retrieved 2 July 2014.
  2. 1 2 3 4 5 Martin Wieland; Qingwen Ren; John S. Y. Tan (23 November 2004). New Developments in Dam Engineering: Proceedings of the 4th International Conference on Dam Engineering, 18-20 October, Nanjing, China. CRC Press. pp. 180–181. ISBN 978-0-203-02067-8. Retrieved 2 July 2014.
  3. "Bang Lang Dam". Electricity Generating Authority of Thailand (EGAT). Retrieved 2 July 2014.
  4. "Electro-Mechanical Works – Guidelines for selection of Turbine and Governing System for SHP" (PDF). Standards/Manuals/ Guidelines for Small Hydro Development. Alternate Hydro Energy Center Indian Institute of Technology Roorkee. p. 70. Retrieved 3 July 2014.


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