“This INTEGRA Technology How It Works video outlines the Viper™ ROV Simultaneous Bolting System.
The Viper™ is an existing technology in the Subsea Industry that has been employed on multiple applications for over 10 years.
This video presents a subsea repair clamp example. However, the technology can be used on any subsea application.
The Viper™ System is placed onto the repair-clamp using cap screws and connected together using standard subsea high-pressure hydraulics to form a closed hydraulic loop, prior to deployment.
Once the repair clamp is in place, the ROV turns each hex head bolts down. Engaging the threads on the opposite side of the clamp until the head of the bolt comes in contact with the corresponding piston of the Viper™ System.
The Viper™ System is then hydraulically pressurized by the ROV through a single hot stab on the control panel. As the Viper™ System is pressurized, the bolts elongate and the pistons rise, taking the locking callers with them. Every bolt on the repair clamp is stretched simultaneously with one action.
When operating pressure is reached, the locking collars are turned down by the ROV arm (or diver) using a castellated socket.
Once all castellated locking-collars are turned down, the ROV releases the hydraulic pressure and the boat-load is retained mechanically by the locking colors.
And that’s it! The operation is fully complete.
In summary, days of boat time to torque subsea divert less applications can be reduced down to hours using the Viper™ ROV Simultaneous Bolting System.
As a proven performance example: Viper™ was used to tighten 41 2¾ inch bolts at a water-depth of 3500. Feet the application was fully operated by ROV with a single ROV hot-stab connection, and took less than six hours to fully load and lock all 41 bolts.
The Viper™ Simultaneous Bolting System, existing technology with proven performance.
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