Pipelines, tunnels, outfalls and associated structures are routinely constructed, maintained and repaired by NUC. Our experience in the construction phases of these structures allows us to provide our customers with valuable planning data, assessments of the condition of their facilities, and cost effective construction, inspection and repair solutions designed to meet their individual needs.

Often times our projects are performed in less than desirable conditions - turbid or black water, severe tidal or river currents, below freezing temperatures, etc. NUC owns the equipment, employs the personnel and has the experience to get the job done in these environments.


Underwater Services
  Pipeline and tunnel construction

  Diver and ROV penetrations To 8000 feet
  Installation and pressureTesting of mechanical joints
  Pipeline and outfall diffuser ports and hot taps
  Repair or replace damaged pipe sections
  Removal of internal debris and sediment
  Installation and repair of submarine cables
  Underwater concrete
  Installation and repair of sacrificial anodes mounted internally or externally
  Anchoring of existing pipelines
  Outfall construction
  Intake Construction
  Pipeline pigging/blanking

Additional Pictures (click to enlarge)
 
< Cad drawing detail of a sanitary sewer outfall joint repair performed by Northwest Underwater Construction, LLC.
 
 
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