Marine Loading Arm

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Product Introduction

The marine loading arm is an advanced fluid transfer system designed for safe and efficient loading and unloading of liquids between shore terminals and tanker vessels.


It is widely used in the transportation of oil, chemicals, and liquefied gases. The system is engineered to adapt to vessel movements during operation, ensuring continuous and stable transfer within a defined working envelope without causing mechanical damage.


Equipped with a real-time range monitoring system, it provides visual and audible alerts when approaching safety limits. An optional Emergency Release System (ERS) enhances operational safety and minimizes product loss.


The loading arm can be operated manually or via an electro-hydraulic control system, offering reliable performance for various terminal applications.

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Product Advantage

1. Enhanced Operational Safety Design

The marine loading arm is designed with a strong emphasis on operational safety during fluid transfer operations. It is equipped with a real-time monitoring system that continuously tracks the working range of the equipment. When the operation approaches predefined safety limits, both visual and audible alarms are automatically triggered to alert operators in advance. This proactive safety mechanism helps reduce operational risks and ensures stable performance under complex terminal conditions.


2. Reliable Adaptation to Vessel Movement

The system is engineered to accommodate vessel movement caused by tides, wind, and loading conditions. Its articulated structural design allows smooth and continuous adjustment within the working envelope, ensuring stable connection between shore facilities and tanker vessels. This capability helps maintain uninterrupted fluid transfer while preventing mechanical stress on pipelines and connection points, even in dynamic marine environments.


3. Emergency Protection with Controlled Disconnection

An optional emergency protection system can be integrated to enhance operational safety in critical situations. When abnormal conditions or excessive vessel movement occur, the system enables safe flow isolation and controlled disconnection of the loading arm. This function significantly reduces the risk of product leakage and protects both ship and shore equipment from potential damage, ensuring higher operational security.


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4. Flexible and Efficient Control Options

The loading arm can be configured for different operation requirements, including manual control and electro-hydraulic systems. Manual operation is suitable for basic terminal applications, while electro-hydraulic control provides smoother movement, higher precision, and improved operational efficiency. This flexibility allows the system to be adapted to various project scales and automation levels.


5. Durable Construction for Harsh Environments

The equipment is manufactured using high-quality carbon steel or stainless steel materials depending on application requirements. All key components are designed to withstand corrosion, pressure variations, and long-term exposure to marine environments. This ensures stable performance, extended service life, and reduced maintenance requirements, even under continuous industrial operation.


6. Engineered for Global Industrial Applications

The marine loading arm is developed in accordance with internationally recognized engineering and safety practices. It has been widely applied in terminal projects involving oil, chemical, and LNG transfer operations. Strict manufacturing and inspection processes ensure consistent quality, operational reliability, and compatibility with global industrial standards.

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Technical Parameters

Item Parameter Specification


1. Nominal Diameter DN80 – DN600 (3” – 24”)


2. Design Pressure -0.06 MPa to 10 MPa


3. Design Temperature -196°C to 250°C


4. Pipeline Material Carbon steel, stainless steel, low-temperature steel, lined or coated steel (PTFE / epoxy coating available)


5. Applicable Media Petroleum products, liquefied gases, chemical fluids (including strong acids and alkalis), and powder materials


6. Operation Mode Manual control and electro-hydraulic control system

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Product Uses

1. Oil Storage and Loading Terminals

The marine loading arm is commonly deployed in oil storage and distribution terminals where large volumes of petroleum products are transferred between shore tanks and tanker vessels. It supports continuous loading and unloading operations under varying tide and vessel conditions. The system helps maintain stable connection during transfer, improving operational safety and reducing risks associated with manual hose handling in large-scale fuel logistics.

2. Chemical Handling and Processing Facilities

In chemical production and storage environments, the loading arm is used for the controlled transfer of a wide range of liquid chemicals. These may include corrosive, toxic, or temperature-sensitive media. The system provides a sealed and stable connection between fixed pipelines and transport vessels, helping reduce exposure risks and ensuring safer handling in compliance-focused industrial environments.


3. LNG and Low-Temperature Transfer Operations

The equipment is suitable for liquefied gas terminals, particularly LNG applications that require reliable performance under extremely low temperatures. It is designed to maintain structural stability and sealing performance during cryogenic fluid transfer. This makes it an important solution for energy infrastructure projects involving liquefied gas storage, transportation, and distribution.


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4. Port Loading and Unloading Infrastructure

Marine loading arms are widely used in port terminals where direct transfer between shore facilities and vessels is required. The system adapts to vessel movement caused by waves, loading weight, and environmental conditions, ensuring uninterrupted transfer operations. It is an essential part of modern port infrastructure for bulk liquid cargo handling.


5. Industrial Bulk Liquid Distribution Systems

Beyond ports and terminals, the loading arm is also applied in industrial distribution networks where large-scale liquid transfer is required. This includes refineries, storage depots, and logistics hubs. The system improves transfer efficiency and reduces leakage risks compared with flexible hose systems, making it suitable for continuous industrial operations.

Product Operate Guide

Before operating the marine loading arm, ensure that all connection points are properly aligned and securely locked between the shore pipeline and the vessel manifold. Slowly activate the control system to move the arm into position, allowing it to naturally adapt to vessel movement within the working range. During operation, continuously monitor the system indicators and ensure that pressure and flow conditions remain stable. If the alarm system is triggered, pause operation immediately and check the movement status before proceeding. After completing the loading or unloading process, safely retract the arm and confirm that all valves are fully closed and secured.

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FAQ

What industries is the marine loading arm suitable for?

The marine loading arm is widely used in industries such as oil terminals, chemical plants, LNG facilities, and industrial storage systems. It is designed for safe and efficient transfer of liquid and gas media under different working conditions. The system can handle corrosive, flammable, and low-temperature fluids, making it suitable for both shore-based and marine loading and unloading operations.

How does the loading arm ensure operational safety?

Can the system adapt to vessel movement during operation?

What control options are available for operation?

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