Hydraulic hot stabs are designed for system pressure make and break by ROV.

Hydraulic hot stabs are designed for system pressure make and break by ROV.

• A. Self-sealing mono-couplings
• B. BSP
• C. Hydraulic hot stabs
• D. Crimp fittings

Answer: (C)

The main idea is making or breaking a hydraulic connection while the system is still pressurized, using remote operation. Hydraulic hot stabs are built for this exact scenario. They let an ROV stab into a live line, seal, and open or close the flow path without depressurizing the circuit. The mating end includes seals and valves designed to withstand subsea pressures and environmental conditions, plus a latch to keep the connection secure even in currents. When it’s time to disconnect, the ROV retracts the stab and the connection is broken while the line remains under control pressure, or the path is safely isolated as designed.

Other options refer to different types of fittings or standards. Self-sealing mono-couplings are general quick-connects but aren’t specifically engineered for live, remote make/break under pressure by an ROV. BSP is just a thread standard for piping, not a live-mating device. Crimp fittings are permanent, fixed connections and not intended for live disconnection by ROV.