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Ensure long-term pressure retention within the J-Tube
J-Tube Seals
J-Tube Seals are typically designed to ensure long-term pressure retention within the J-Tube following installation of new riser to a platform.
The seal allows a constant over-pressure to be applied via the platform corrosion inhibition system, and also ensures seawater cannot enter the J-Tube & provide fresh oxygen which promotes corrosion.
Pressure retention
A J-Tube seal can also provide a mechanical support within the J-Tube bell-mouth to ensure flexible risers are not subjected to excessive point loading.
A connection for bend restrictors can be implemented to ensure the mechanical support is continued all the way to the seabed.
Mechanical support
J-Tube seals can be provided in many formats to meet the project requirements, our most common are:
Varieties
Diver installed
ROV activated
Passive
Plugged
