Subsea pipeline and cable inspection

Services

Subsea pipeline and cable inspection

Instrument-based inspection of subsea pipelines and cables from survey vessels, remotely operated vehicles and autonomous underwater vehicles.

Description

Subsea pipeline and cable inspections establish the position and condition of the route and identify changes that may affect its operation. The work may include:

Determining the three-dimensional position and burial depth of a pipeline or cable, and identifying deviations from the design.
Mapping seabed deformation and sediment movement along the route and within the protection zone.
Comparing the results with previous surveys to assess changes over time.
Detecting and identifying debris and other objects along the route.
Assessing seabed disturbance caused by sea ice and vessel activity.
Analysing water depths and their changes for safe navigation in the protection zone.
Diver inspection of the pipeline route and assessment of scour.
Inspecting the shore section and information signs.

Instrument-based inspections are carried out from vessels, ROVs and AUVs. The survey methods are selected for the specific asset, task and site conditions.

Types of jobs

Topographic surveys
Engineering hydrographic surveys
Navigation and positioning support
Search and inspection of underwater objects

Photographic and video recording of deformation and foreign objects
Instrumental surveys of pipeline cathodic protection

Methods used to inspect underwater structures and utilities include:

Sonar surveys
Marine magnetic surveys
Electromagnetic utility detection
Continuous sub-bottom profiling

Completed work

All projects of the direction

Project enquiry details

For an underwater pipeline or cable inspection enquiry, include the location and length of the section, water depths, asset information and the purpose of the inspection. Add route drawings and a technical brief if available.

Discuss your project