Pipeline Installation & Repair

Our experienced commercial diving team specializes in underwater pipeline construction, dredging, and repair for intakes and LP discharges.

What We Offer

Intake & Discharge Installations

  • Sleds and multiport diffusers
  • Cross bracing and structural pipe stands
  • Jetting and excavation for pipeline burial and protection
  • Cathodic protection and sacrificial anode installation

Pipeline Construction & Welding

  • Steel and concrete-coated pipeline installation
  • On-site welding to meet custom layouts
  • Derelict or outdated pipeline recovery and safe removal

HDPE Pipeline Solutions

High-density polyethylene (HDPE) pipelines are a preferred solution for many marine applications due to their flexibility and durability. Our trained team offers:

  • Certified HDPE fusion welding
  • Slip ring and gasket replacement
  • Patching, sealing, and structural repairs
  • Helix anchor installation to ensure long-term stability

Pipeline Inspections via ROV

Using advanced Remotely Operated Vehicle (ROV) technology, we provide thorough, real-time inspections of underwater pipelines, including:

  • GPS mapping and geolocation
  • Anode and weld inspection
  • Visual damage assessment and video documentation
  • Mixing zone inspections

Comprehensive Services from Shore to Seafloor

We understand the vital role marine pipelines play in environmental systems, industrial facilities, and municipal infrastructure. Whether it’s a new installation, an emergency repair, or routine maintenance, Enviro-Tech Diving delivers the expertise and tools to get the job done right.

Related Projects

Derelict Vessel Removal and Disposal

Client: State of Washington
Location: Washington State

Safeguarding Marine Environments by Safely Removing Derelict Vessels and Hazardous Debris In Washington State, derelict vessels pose significant environmental hazards, blocking shipping routes, damaging marine...

Seafloor Survey and R.O.V Operations

Client: Fish Processing Plant
Location: Valdez, AK

Leveraging R.O.V Technology for a Thorough Seafloor Assessment In Valdez, Alaska, a fish processing plant required a detailed environmental survey of the seafloor near its...

Removal of Old Steel Pipeline

Client: Fish Processing Plant
Location: Sandpoint, AK

Safely Removing Outdated Infrastructure with Underwater Cutting and Surveying In Sandpoint, Alaska, an aging steel pipeline at a fish processing plant required removal to make...

R.O.V. Seafloor Survey

Client: Fish Processing Plant
Location: Akutan, AK

Utilizing ROV Technology to Conduct Detailed Environmental Surveys In Akutan, Alaska, a fish processing plant required an extensive environmental seafloor survey to evaluate the potential...