Subsea Screening Rings

With the experience gained from many inspections in both the North Sea and the Gulf of Mexico, GUL’s Sub-Sea GWT equipment has evolved into a reliable modular system. GUL Sub-Sea rings are easily adjusted to fit different pipe sizes and are available for both ROV or diver deployment.

The advantages of using the Sub-Sea rings include:

  • Screening unpiggable sections of line for internal or external corrosion/erosion.
  • Screening under weight coat and insulation with minimal cleaning and excavation.
  • The on-site analysis allows the ROV to perform follow-up indications.
Fast Ethernet Collection
Interchangeable modules
6 to 24 inch
3000m max water depth
Diver or ROV
5 minute collection
ROV Deployed

A Subsea G4mini™ is mounted on the ROV. A hydraulic connection is used for opening and closing the ring. The test is carried out from the ROV control room

Diver Deployed

The test is controlled via an umbilical from a topside interface box to the Wavemaker® instrument. The rings are installed on a clean section of pipe by 1 or 2 divers using a mechanical clamping mechanism.

Specifications – ROV Deployed

Number of Channels
Nominal Pipe Sizes
6″ to 10″ (DN 150 to 250)
Operating Depth
3000m max.
Uses Ethernet connected Subsea G4Mini™

Specifications – Diver Deployed

Number of Channels
Nominal Pipe Sizes
6″ to 26″ (DN 150 to 650)
Operating Depth
Any diver depth
Umbilical connection to Subsea G4Mini™ (> 50m) or topside Wavemaker® (< 50m)
Help & Support
Need support? Here you'll find how to contact the team that can give the assistance you need.
Get help & support
© 2024 Guided Ultrasonics Ltd. All rights reserved