|Place of Origin:||china|
|Brand Name:||Eminent Tysun|
|Minimum Order Quantity:||1 set|
|Delivery Time:||90 day|
|Payment Terms:||L/C, T/T|
|SKU:||1000 SET||Nominal Diameter:||6 Inch,8 Inch,10 Inch,12 Inch,14 Inch,16 Inch,20 Inch|
|Material:||Carbon Steel, Low Temperature Carbon Steel, Stainless Steel 304L, Stainless Steel 316L||Application:||Crude Oil, Gasoline, Diesel,asphalt(pitch),chemicals|
|Operable In Temperatures:||–10°C～180°C||Design Pressure:||15-40 Bar|
Electric-hydraulic operated marine loading
unloading arm rotation counterweight type (single pipeline)(RCEH-S)
Nominal diameter: 6”, 8”,10”,12”,14”,16”,20”
Material: Carbon Steel, Low temperature Carbon steel, Stainless Steel 304L, Stainless Steel 316L
Application: crude oil, gasoline, diesel,asphalt(pitch),chemicals
Operable in temperatures: –10°C～180°C
Design pressure: 15-40 bar
1.All pipeline loads are supported by independent arm supporting frame which bears all major external load and flexible torque.
2.Using Column type inboard arm instead of box type arm to guarantee the minimal wind loads
3.Counterweight balancing system makes loading arms to balance at any position, balancing inboard and outboard arms by a moving counterweight.
4.The seals of swivel joint are easy to change due to the unique structure of swivel joint,the platform is used for the online maintenance of swivel joint.
5.Easy operation by the help of remote control system and position monitoring system(PMS)
1. vacuum connector
2. Drain connector
3. Purge system
4. Safety Ladder
5. Adjustable support jack
6.Electro-hydraulic control system
7. Hydraulic control emergency release system(ERS)
8.Manual/hydraulic control quick connect/ disconnect coupler (QC/DC)
9. position monitoring system(PMS)
10. Over limit sound and light alarm system
11. Electric trace heating
12. Steam trace heating
Marine Loading Arm
The marine loading & Unloading arm is designed to transfer fluid and gases between the storage tank and tanker vessels. The marine loading arm is used in wide range of applications from cryogenic ethylene, LNG to high temperature products, also some hazardous and corrosive fluids.
The loading & Unloading arm is used in chemical, petrochemical, LNG, LPG storage terminals, pharmaceutical, health-care and beverage. It is equipped with inboard arm, outboard arm, vapour recovery system, counterweight pantograph balancing mechanism,ERC(Emergency Release Coupling), QCDC(Quick Connect/Disconnect Coupling), PMS(Position Monitoring System) and visual & audible alarms.
It can be maneuvered manually, electro-hydraulically depending on size and type of loading arm.
Design Condition and Data Sheet
Nominal Diameter : DN100 -DN600 (4”-24”)
Design Pressure: -0.06 MPa -+10 MPa
Design temperature: -196℃- +250℃
Pipe Material: Carbon Steel, Low Temp Carbon Steel, Stainless Steel 304,304L,316,316L
Wind speed:static: 55m/s operation:16m/s
---at 55m/s: 210Kg/m2
---at 16m/s: 15 Kg/m2
Seismic acceleration parameter:0.2G or 0.3G
Normally, loading arms can be installed on Jetty and buoy ship directly without any support else. The design and rebuilt for Jetty reference the load from loading arm.
The representative load of loading arms reference table 1
|Type||Size of pipe||Net weight (T)||
Load from side
Our design engineer will submit the size and load of loading arm to client base on size of jetty, Marine Parameter, vessel data, Meteorological Condition and Environmental Condition.
Flow rate and pressure
Normally, the size of pipe and quantity bases on the max. Flow rate of medium and its loading efficiency.
The loading/unloading flow rate lies on the ability of pump, pipeline of jetty, oil tanker and the characteristic of medium transferred. It will bring vibration and destroy to Loading arm if the flux is over rating data (11m/s).
|Diameter||Allowable flux(m3/h)||Diameter||Allowable flux(m3/h)|
Standards and code:
Eminent's Marine Loading Arms are designed and manufactured comply with the OCIMF(Oil Companies International Marine Forum) regulation, BSI 1474, ASTM (American Society for Testing and Materials) and other Chinese and international standards.
ASTM (American Society for Testing and Materials)
GB50235-97: < Code for Construction and Acceptance of Industrial Metallic Piping >
GB50236-98: < Code for Construction and Acceptance of Filed equipment and Industrial piping Welding >
GB3323: < Steel Melt Weld Abutting Joint Radiograph and Quality Classification >
SH3405-96: < Steel Butt-Welding Pipe Fittings >
GB8923: < Rust Grade and Preparation Grades of Steel Surface before Application>
Marine Loading Arms Envelope (Actual drawing see attachments)
The connection area is that volume in space in which the loading arm should be connected to the ship flange. The area results from the min/max. manifold setback and sized of vessel(fully of light)at low or high tide
The manifold flange of the tanker can sway or surge for a certain vertical and horizontal displacement in this area, and it is safe for the flange to drift in this area. The area is a part of a sphere and its center of sphere is the swivel joint.
Operating personnel will be warned by audio / visual alarms. Product valves on the land and ship side should be closed to interrupt product transfer.
The alarm area is a cushion area out of the connection area and the drift area, and in this area the arm can not be loaded and unloaded. If the connection flange enters it , the alarm system of the arm can give visual and audio alarm, and the operator should take some measure to make the flange leave out of the area. Stop the hydro-transportation.
2 If there is DBV/ERS installed in the loading arm, it will close and cut off the connection from vessel when the second grade alarm device start-up, then the loading arm will uplift and lock at a position to avoid the oil vessel continue movement and destroy the loading arm.
If you want to know