Steel Riveted Penstock Rehabilitation

Banff National Park, known for its stunning landscapes and diverse wildlife, is home to TransAlta’s Cascade Hydroelectric Power Plant.

The plant’s 96-inch steel riveted penstock, built in 1941, showed signs of corrosion over time, threatening its integrity and service life.

Project Overview

96-inch diameter penstock
Restoration of 460 LF of penstock
Completed in approximately 9,000 manhours

Banff National Park, known for its stunning landscapes and diverse wildlife, is home to TransAlta’s Cascade Hydroelectric Power Plant. The plant’s 96-inch steel riveted penstock, built in 1941, showed signs of corrosion over time, threatening its integrity and service life.

After evaluating several rehabilitation options, STRUCTURAL TECHNOLOGIES’ StrongPIPE® V-Wrap™ System was chosen to restore 460 lineal feet of pipeline. PULLMAN, an exclusive licensee of STRUCTURAL TECHNOLOGIES, installed this trenchless solution, overcoming the challenges of a 30-degree slope with robotic blasting for surface prep and a custom stair and cart system for safe, efficient repairs.

Located in a National Park near vital infrastructure, the team prioritized environmental protection and the safety of surrounding structures. The penstock rehabilitation was successfully completed in approximately 9,000 man-hours with zero safety incidents, highlighting the team’s expertise and dedication to quality craftsmanship.