Crosstown Pipeline

  • Client/Owner:
  • Location:
  • Duration:
  • Manhours Expended:
  • Anchorage Fueling and Service Co.
  • Anchorage, Alaska
  • June 1997 – July 1999
  • 87,500

This environmentally sensitive project was awarded to CONAM as the Engineering, Procurement and Construction (EPC) contractor. The 8 mile, 12″ diameter pipeline was installed and managed in 3 Phases.  Phase 1 completed a routing study to identify and compare different route options for construction and operation costs, impacts to the environment, safety and long term maintenance. Phase 2 involved completing the Environmental Assessment and Final Design, obtaining permits and easements, and procurement.  The actual construction, testing and commissioning took place in Phase 3.

The pipeline replaced on old, unpiggable 6″ line that was routed through congested residential neighborhoods and and city streets.  This new, piggable 12″ line provided additional throughput required by increased airport traffic while providing for a better, more unencumbered route.  Major challenges included 4 miles of offshore intertidal mud flats and two (2) horizontal directional drilling (HDD) sections. Additional scope included pig launchers and new transport pumps at the Port Facility, a SCADA control system, static and dynamic Leak Detection Systems, and a deep well Cathodic Protection System.