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Sea Water Treatment Plant (STP) at Oliktok Point

Project Details

Location: Alaska

Client: Lorem Ipsum

Price Gregory International, mobilized equipment and personnel to provide construction and fabrication for the replacement of the 14-mile long 30-inch seawater line from CW-01 in Kuparuk to the Oliktok STP. The existing 30-inch seawater line was decommissioned and the new insulated steel pipe was installed on existing pipe racks adjacent to the old line. PGI tied the new pipeline in to the existing Sea Water Treatment Plant (STP) at Oliktok Point. Approximately 1,950 feet of the pipeline was buried in the frozen gravel fill of the Oliktok Point Causeway.

PGI crews accomplished this task while living in a remote man camp located within the Kuparuk Oilfield. Winter North Slope conditions prevailed throughout the project with temperatures dipping as low as -50o F.

The construction was broken into 5 distrinct scope elements:


  • Ice Road Construction and Maintenance
  • Underground Civil Pad, Road and Caribou crossings
  • Installation of new Vertical Support Members
  • Installation of a 14-mile long new insulated and coated pipeline.
  • Hydrostatic Line Testing



Project was completed on time within one winter construction season. Tie ins were accomplished during the summer as part of planned facility shut downs.

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