Saunderson PRV Lower Townsite Supply Lines HDD
Publication: Pipelines 2024
ABSTRACT
The Saunderson PRV project is a multi-year project to upgrade water supply for the Lower Townsite (LTS) neighbourhood in Fort McMurray, Alberta. The project includes the construction of a new PRV chamber, extension of the existing primary high pressure water supply line, and the installation of a new supply line from the existing LTS Reservoir in the Abasand Heights neighborhood to the new PRV chamber by horizontal directional drilling (HDD). The focus of this paper is on the design and installation of the 445 m long and 914 mm diameter HDPE DR9 directionally drilled supply line crossing of Highway 63 from the LTS to the Abasand Heights plateau, a topographic elevation difference of approximately 65 m between entry and exit. Project complexities resulting from the elevation difference between drill entry and exit included risk of flush-backs during reaming passes, overbreak pipe support for pullback, buoyancy control requirements during pullback, and annular space grouting post-installation.
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REFERENCES
Associated Engineering. (2015). 2015 Water Master Plan, Regional Municipality of Wood Buffalo.
Thurber Engineering. (2019). Saunderson PRV and LTS Supply Lines, Fort McMurray, Alberta Supplemental Geotechnical Investigation.
Thurber Engineering. (2014). Lower Townsite Four Way Chamber, Fort McMurrary, Alberta, Geotechnical Investigation.
ASTM. (2020). Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, Designation: F1962-20.
Campos, et al. (2021). Installation Force and Stress Considerations for HDD Design of Bundled Pipelines, North American Society for Trenchless Technology (NASTT) 2021 No-Dig Show, Orlando, FL.
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Published online: Aug 30, 2024
ASCE Technical Topics:
- Construction engineering
- Construction management
- Construction methods
- Continuum mechanics
- Design (by type)
- Drilling
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Highway and road design
- Highway engineering
- Highway transportation
- Infrastructure
- Pressure (type)
- Pressure vessels
- Project management
- Solid mechanics
- Structural engineering
- Structures (by type)
- Transportation engineering
- Water and water resources
- Water management
- Water pressure
- Water supply
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