Marine Loading Arm

Usage：Used for transferring liquids and gases between the piping system of a jetty and tanker or barge.

Summary:

1. Articulate freely during the transfer, to follow the normal movements of moored vessels.
2. Can be equipped with a range monitoring system to provide visual and audible alarms prior to the ships manifold moving outside the normal working envelope.
3. Can be manoeuvred manually, electro-hydraulically depending on loading arm size, type and duty.
4. Pipe material: carbon steel, stainless steel, PTFE-Lined
5. Norminal Diameter: DN100-DN600(4”-24”)
6. Design Pressure: -0.06MPa~+10.0MPa.
7. Design Temperature: -196℃~+250℃

Basic characteristics:

Easy operation, easy seal seal change，separate support structure,  the diameter of swivel joints and pipeline is identical, all swivel joints are identical, namely the spare parts being required rarely, long reach capability. The loading arm features a separate support structure with its own generously sized mechanical bearings, which can take up all major external load and moment. The swivel joints and pipeline only are subjected to stress by internal pressure and weight. Pipeline is attached to support structure by means of special mount which can also compensate for thermal expansion due temperature variation to avoid overstressing. Counterweight balancing system makes the loading arm balance in all positions, balancing inboard and outboard arm by a moving counterweight. The loading arm has been designed specially to meet the increased requirements of loading critical media and long reach capability. The loading arm can be equipped with three hydraulic driving assemblies for independent movements of the inboard arm, outboard arm and the slewing movements around its vertical axis. The driving assemblies are interchangeable, the three cylinders are operated by an electro/hydraulic control console with stationary push button panel. A portable removed control system can also be installed permitting the operator to control the arm movements from other points of the jetty or from tanker’s deck.. The loading arm can be equipped with double ball valve or double disk valve/emergency release coupling which are automatically actuated when the tanker manifold flange to which the loading arm is connected moves outside the predetermined working and safely envelope. The loading arm can also be equipped with QC/DC, it need not to connect the converging tube between the loading arm and different manifold flange of the vessel. In this case, the operation is very convenient and quick. Besides, the loading arm can be equipped with a vapour return line in 3”, 4” or 6” (large sizes on request).