.: STFL Installation Install a Steel Tube Flying Lead (Cobra Head) into the manifold connection on a Subsea Tree Structure.

.: Introduction

In this scenario, one end of the STFL must be attached to the manifold connection on a Subsea Tree structure. The other end is already installed and connected to an Umbilical Termination Assembly (UTA). The STFL to install is suspended by a cable that is connected to the Ship. There is a hook that connects the Cobra Head to the Ship’s Cable.

.: Controlling the FLOT

The Flying Lead Orientation Tool (FLOT) is designed to operate in conjunction with a torque tool for the connection of subsea flying assemblies. In this scenario we will orient the FLOT appropriately, in order to connect to the Cobra Head.

.: Procedure

1. Lay the steel tube along the desired path on the sea floor. This requires the following :
a. Using the Control Tab on the Instructor, move the ship at a Travel Direction of 45° (make sure to hit the ‘Enter’ Key)
b. Do not change the Ship Heading (leave at the default of 0) and hit the ‘Go’ button.
c. Select the ‘VMAX-STFL’ Cable and begin spooling the cable out.
d. Gently bring the Cobra Head down to the sea floor.
e. Stop the ship once the cobra head has reached the floor.
2. Unlatch the STFL from the Ship’s cable. (See Reference Picture 1)
3. Once unlatched, you may retrieve the Ship’s Cable to move it out of the way of the operation.
4. Pilot the ROV towards the Cobra Head.
5. Adjust the FLOT as necessary so that you can connect the torque tool into the torque bucket on the back side of the Cobra Head.
6. Once connected, Latch onto the Cobra Head with the Torque Tool.
7. Slowly pilot the ROV towards the Subsea Structure.
8. Look for the “MANF” receptacle. That is where you will attach the Cobra Head. (See Reference Picture 2)
9. Attach the Cobra Head into the “MANF” receptacle and apply torque to keep it latched.
10. Once the Cobra Head is secured, unlatch the torque tool.
11. Pilot the ROV towards the float on the Cobra Head.
12. Detach the float by unscrewing the float connection. (See Reference Picture 1)

.: Control Scheme

Action	Control System	Manifold	Valve	Control	Desktop / Debug
FLOT pitch	XLS and XL	2	1	A – Down B – Up	Tool #3 DOF 1
	XLX	3	3
FLOT rotate	XLS and XL	2	2	A – Clockwise B – Counter CW	Tool #3 DOF 2
	XLX	3	4
Torque Tool latch	XLS and XL	2	3	A – Latch B – Unlatch
	XLX	3	5
Torque tool – activate torque	XLS and XL	2	4	A – Clockwise B – Counter CW
	XLX	3	6

Cobra Head Latch – Apply a clockwise torque with the torque tool to engage the latch.

Cable Release – Released by moving the handle torwards the cable (See Reference Picture 1)

Floater Release – Released by rotating the handle (See Reference Picture 1)

.: Reference Pictures

Reference Picture 1:

Reference Picture 2:

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