Page 540 - The ROV Manual - A User Guide for Remotely Operated Vehicles 2nd edition

Examples of the tasks that are performed and examples of the tooling available are given in the following sections.
20.1 Manipulator-operated tooling
The simplest of all tooling operations is the direct manipulator-operated tooling interfacing directly with the subsea interface (Category 1 of ISO 13628-8 ROV Intervention Configuration—Figure 20.1). From the direct operation of valves and tooling, the tool becomes less integrated with the vehicle.
The remainder of Section 20.1 is dedicated to Category 2 of ISO 13628-8 ROV Intervention Configuration—namely, the ROV manipulator-held tooling.
• Manipulator-operated torque tool
The manipulator-operated torque tool (Figure 20.2) is used to operate ISO 13628 Class 1
2 (note the older standard as API 17D) interfaces without the need of a hydraulically operated torque tool. The stainless steel tool uses the wrist rotate function of the manipulator to generate the required torque, which is dependent on the manipulator’s capability.
• Hot stabs and receptacles
The hot stab is described in ISO 13628-8 as an ROV-operated high-pressure subsea hydraulic connector used to power hydraulic tools, transfer fluid, perform chemical injections, and monitor pressure. Various standardized sizes, configurations, and pressure ratings are available depend- ing upon the requirement of the task. An example of a hot stab and receptacle, with a pressure rating of 10,000 psi (690 bar) is shown in Figure 20.3. The hot stab generally consists of a flexi- ble T-handle (mated to the standard ISO 13628-8 parallel claw—Figure 19.11), the body and removable tips that are installed to prevent damage to the receptacle in the event of an off-angle insertion.
20.1 Manipulator-operated tooling 537
FIGURE 20.1
Direct manipulator operation of interface.
(Courtesy Schilling Robotics.)