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:
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
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.