4 Metre diameter penstock construction for the Raymond Reservoir Hydro Project
- UMA Engineering, Lethbridge, Alberta (Canada)
- Pipe Coating Systems, Nisku, Alberta (Canada)
A four metre diameter 770 m long buried steel penstock was constructed for the 20 MW Raymond Reservoir Hydro Project in southern Alberta. The penstock delivers up to 56.7 m{sup 3}/sec of irrigation water at an effective head of 44 m to a 2.6 m diameter Kaplan turbine. The hydro facility was commissioned in the spring of 1994. The steel pipe was delivered to the site in 18 m long sections from a fabrication plant located 250 km away. Specialized equipment was engineered and constructed to externally coat and internally line the pipe sections on site. The pipe sections, weighing from 27,000 to 30,000 kg, were rolled and moved on a specially built lathe during the external sandblasting and tape wrapping operation. The external tape wrapping is one element of the cathodic protection system for the steel pipe. Specialized equipment was modified to sandblast the interior to white metal and then mechanically apply three coats of internal epoxy lining. The internal lining improves the hydraulic characteristics of the pipe in addition to protecting the pipe from corrosion. This innovative approach to coating and lining the pipe resulted in an exceptionally high quality product at an affordable cost.
- OSTI ID:
- 220017
- Report Number(s):
- CONF-9507190-; TRN: 96:000708-0099
- Resource Relation:
- Conference: Waterpower 1995: international conference, San Francisco, CA (United States), 25-28 Jul 1995; Other Information: PBD: 1995; Related Information: Is Part Of Waterpower`95. Volume 1-3; Cassidy, J.L. [ed.]; PB: 2869 p.
- Country of Publication:
- United States
- Language:
- English
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