In 1998, EPCOR undertook an inspection program on the condition of 14 of their underground high voltage transmission lines where they crossed the riverbed of the North Saskatchewan River within the City of Edmonton. Based on the findings of this investigation, it was determined that two of the river crossings were at serious risk of mechanical damage. It was decided that they would be replaced by horizontal directional drilling (HDD) methods, at a sufficient depth into the bedrock below the river bottom to remove any risk of failure due to mechanical damage. This paper examines all phases of the work carried out from project inception to construction of the two crossings, first in the spring of 2003 and then in the dead of winter of 2004. Some of the technical considerations inherent in the design of the HDD installations included geotechnical concerns with potential drilling fluid frac-out and slope stability, as well as heat dissipation rates and operating constraints of the 72 kV oil-filled pipe type high voltage cables. This paper will focus on project constraints imposed by the existing urban (park and residential) locations, community and stakeholder concerns and the regulatory and approval requirements of three levels of government. In addition to the necessary geotechnical investigations, other investigations included addressing potential impacts on the river, vegetation, wildlife, archaeological, noise and construction concerns. An extensive public communications program was completed that included a number of open houses, delivery of construction notices to all surrounding residences, meetings with community league executives and other stakeholder groups. The paper will describe the challenges that the project team faced and how they were overcome and the amount of time and effort that went in to meeting those challenges. The paper will end with a discussion of the costs and time frames required to complete such a project.
Skip Nav Destination
2004 International Pipeline Conference
October 4–8, 2004
Calgary, Alberta, Canada
Conference Sponsors:
- International Petroleum Technology Institute
ISBN:
0-7918-4176-6
PROCEEDINGS PAPER
Two Case Studies of Trenchless Technologies in the Urban Environment
Dave Krywiak,
Dave Krywiak
Stantec Consulting Ltd., Amherst, NY
Search for other works by this author on:
Werner Kiefer,
Werner Kiefer
Stantec Consulting Ltd., Amherst, NY
Search for other works by this author on:
David Arnold,
David Arnold
EPCOR Distribution Inc., Edmonton, AB, Canada
Search for other works by this author on:
Kirstine Hull
Kirstine Hull
EPCOR Distribution Inc., Edmonton, AB, Canada
Search for other works by this author on:
Dave Krywiak
Stantec Consulting Ltd., Amherst, NY
Werner Kiefer
Stantec Consulting Ltd., Amherst, NY
David Arnold
EPCOR Distribution Inc., Edmonton, AB, Canada
Kirstine Hull
EPCOR Distribution Inc., Edmonton, AB, Canada
Paper No:
IPC2004-0683, pp. 867-873; 7 pages
Published Online:
December 4, 2008
Citation
Krywiak, D, Kiefer, W, Arnold, D, & Hull, K. "Two Case Studies of Trenchless Technologies in the Urban Environment." Proceedings of the 2004 International Pipeline Conference. 2004 International Pipeline Conference, Volumes 1, 2, and 3. Calgary, Alberta, Canada. October 4–8, 2004. pp. 867-873. ASME. https://doi.org/10.1115/IPC2004-0683
Download citation file:
12
Views
0
Citations
Related Proceedings Papers
Related Articles
Risk-Based Inspection Analysis for High-Pressure Hydrogenation Cracking Unit
J. Pressure Vessel Technol (April,2009)
Dr. Romney B. Duffey on His 80th Birthday
ASME J of Nuclear Rad Sci (July,2022)
Superconductors Power Up
Mechanical Engineering (January,1999)
Related Chapters
Use of PSA in Lisencing of EPR 1600 in Finland (PSAM-0160)
Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)
Introduction
Pipeline Geo-Environmental Design and Geohazard Management
DYNAMIC GEOHAZARD MANAGEMENT IN CHALLENGING ENVIRONMENT
Pipeline Integrity Management Under Geohazard Conditions (PIMG)