During the development of oil terminal berths, modern large-scale oil terminal berths, especially those at unprotected pile-type terminals, have non-continuous berth surfaces and are elevated. Vessels experience frequent and significant pitching and movement during operations. Additionally, due to the large fender size, the distance from the ship's side to the shore line at the berth is considerable. This condition poses a challenge for the gangways carried by oil tankers. Therefore, to accelerate cargo handling and ensure the safety of personnel boarding and disembarking, replacing the ship's gangways with boarding ladders is an inevitable choice. The boarding ladder, akin to the tanker's loading arm, has become an indispensable large-scale operation equipment at oil terminal berths.
1) The marine gangway ladder adjusts with tidal and barge variations. 2) Made from ship-grade aluminum. 3) Equipped with crane, hydraulic, or pneumatic systems. 4) Ratchet-type non-slip tread plates, which automatically adjust the level, ensuring safety protection in any weather condition. 5) Configurable with a compression mechanism to enhance its functionality.
The selection of gangways primarily depends on factors such as the pier tonnage, tidal variations, current pier layout, and price-performance ratio to choose the appropriate model. Users must fill out a parameter sheet to provide manufacturers with the necessary information to determine the gangway's envelope range, base dimensions, and load data.
BL-E1 consists of the main ladder, triangular ladder, and frame. Suitable for wharves of 0.3 to 30,000 tons.
The BL-E2 consists of the main ladder, front ladder, triangular ladder, rotating platform, and column. It is suitable for wharfs of 0.5 to 50,000 tons.
The BL-E3 consists of the main ladder, front ladder, triangular ladder, rotating platform, traction mechanism, and column. It is suitable for wharfs of 10,000 to 80,000 tons.
BL-E4 consists of the main ladder, front ladder, triangular ladder, rotating platform, lifting mechanism, and tower frame. The rotating platform can rise and fall along the tower frame. Suitable for docks of 200,000 to 300,000 tons.
Design, manufacturing, and installation of gangways comply with standards such as the "Crane Design Specification," "Steel Structure Design Specification," "Electrical Part of Design Fire Prevention Specification for Petrochemical Enterprises," "Electrical Part of Fire Prevention Design Specification for Oil Loading and Unloading Terminals," and "Design Specification for Electrical Installations in Explosive and Fire Hazardous Environments."