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Bradley Lake West Fork Upper Battle Creek Diversion Project

Orion took on a challenging project in the Kenai Mountains, Alaska, enhancing power generation by 10% through the construction of three miles of roadway and two miles of High-Density Polyethylene (HDPE) pipeline. The project showcased our expertise in overcoming logistical challenges for successful and timely completion.

PROJECT HIGHLIGHTS

  • Constructed 3 miles of new roadway
  • Installed 2 miles of High-Density Polyethylene (HDPE) pipeline
  • Built West Upper Battle Creek Diversion structures in Kenai Mountains
  • Increased flow from the creek to Bradley Lake Reservoir
  • Enhanced power generation by 10% at Bradley Lake Powerhouse
  • HDPE pipeline components: 450 linear feet (LF), 96”-diameter intake structure
  • HDPE transmission pipeline: 8,400 LF of 63”-diameter
  • Outfall structure: 350 LF, 84”-diameter
  • Subcontracted with GMC for fusion welding with the world's largest HDPE fusion machine
  • Capped off diversion dam
  • Installed pressure relief valves, concrete pipe easements, ECO block walls, and electrical controls

Orion's High-Elevation Energy Enhancement

Orion secured a contract with the Alaska Energy Authority to construct three miles of new roadway, two miles of High-Density Polyethylene (HDPE) pipeline, and the West Upper Battle Creek Diversion structures in the Kenai Mountains, situated 1,500 feet above Kachemak Bay near Homer, Alaska. The ambitious project aimed to boost the creek's flow into the Bradley Lake Reservoir, thereby increasing power generation at the Bradley Lake Powerhouse by 10%.

The project's primary components included the HDPE pipeline with its 450-linear-foot (LF), 96-inch-diameter intake structure, linking to 8,400 LF of 63-inch-diameter HDPE transmission pipeline, and a 350-LF, 84-inch-diameter outfall structure. In a move to enhance efficiency, Orion subcontracted GMC, importing the world's largest HDPE fusion machine for welding the 80-foot-long pieces. These components were then transported approximately 10 miles from the storage yard up the mountain to the project site for installation.

The project also entailed capping off the diversion dam, installing pressure relief valves, creating concrete pipe easements, erecting ECO block walls, implementing electrical controls, and completing backfilling. Much of this work occurred concurrently along the route, provide for a safe, successful, and on-time completion of the project.

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