Reviving Double Circuit Towers
This report highlights the outstanding accomplishment of Ampjack in restoring and revitalizing critically damaged and leaning towers along a remote northern 110kV double circuit transmission line for SaskPower.
Introduction:
Leveraging their expertise and collaborating with Big Ice Services and APE Drilling, Ampjack triumphed over a range of formidable challenges, including difficult access and unpredictable subsurface conditions. Employing their modified AMPJACK® tower lift system, they successfully restored these towers, guaranteeing the ongoing reliability and optimal performance of SaskPower’s transmission line. Gain deeper insights into this impressive undertaking and discover the remarkable results attained by Ampjack in this energized 110kV double circuit tower restoration project.
Background:
Ampjack undertook the repair of 15 critically damaged and leaning towers on a remote northern 110kV double circuit transmission line. These towers required urgent attention due to severe damage and corrosion.
Challenges:
The project posed several challenges, including the remote location and rough terrain, making access difficult. Unknown subsurface conditions further complicated the foundation installation process. Additionally, the towers exhibited significant damage, with some leaning over 7 feet at their peak and extensive corrosion below the groundline.
Solutions:
Ampjack formed a project team consisting of Big Ice Services and APE Drilling. Big Ice Services constructed over 70 kilometers of ice and winter roads to provide access to the tower sites. APE Drilling offered innovative foundation installation solutions tailored to the rugged terrain and unknown subsurface conditions. Ampjack took charge of project management, design, material procurement, and construction services, including tower upgrades, levelling, corrosion repairs, and cathodic protection installation.
Outcome:
Through a collaborative approach, the project was successfully completed on time and within the allocated budget. Ampjack’s expertise in live line and live load construction methods allowed for the safe and efficient restoration and upgrade of the critically damaged and leaning towers. This comprehensive maintenance project ensured the continued reliability and longevity of the transmission line.
PARTIES INVOLVED
Big Ice Services
Apollo Piling – APE Drilling
