Introduction of floating pneumatic fender
Pneumatic fenders are inflatable energy-absorbing devices designed to mitigate the impact force between a vessel and a berth (or another vessel) during berthing or mooring. Unlike rigid fenders, they utilize compressed air as the energy-absorbing medium, featuring a flexible structure composed of an outer rubber layer, reinforcement layers, and an inner airtight bladder.
The working principle is straightforward yet efficient: When a vessel approaches and contacts the pneumatic fender, the fender compresses under the impact force. During compression, the internal air pressure increases, converting the kinetic energy of the vessel into potential energy of the compressed air. Simultaneously, the flexible surface of the fender ensures uniform force distribution, minimizing localized stress on both the vessel hull and the berth structure. After the impact, the fender rebounds to its original shape due to the internal air pressure, ready for subsequent use.
Structure of Florescence floating pneumatic fender
Floating pneumatic fender consists of an outer rubber, reinforcement synthetic-tyre-cord layer, and inner rubber, vulcanized together firmly.
1. The outer rubbers are used to protect the cord layers and inner rubber from abrasion
2. The reinforcement synthetic-tyre-cord layer strong enough to maintain the internal air pressure.
3. The inner rubber layer seals air inside the fender.
4. Fenders diameter larger than 2500mm will be equipped with safety valve.
Specification of floating pneumatic fender
|
D*L (mm) |
Initial pneumatic pressure 50KPa |
||
| Body weight(Kg) | R(KN) | GEA(KJ) | |
|
500*100 |
25 |
64 |
6 |
|
600*1000 |
32 |
74 |
8 |
|
1000*1500 |
80 |
182 |
32 |
|
1000*2000 |
100 |
257 |
45 |
|
1200*2000 |
120 |
297 |
63 |
|
1350*2500 |
165 |
427 |
102 |
|
1500*3000 |
315 |
597 |
153 |
|
1700*3000 |
405 |
639 |
191 |
|
2000*3500 |
590 |
875 |
308 |
|
2500*4000 |
1050 |
1381 |
663 |
|
2500*5500 |
1333 |
2019 |
943 |
|
3000*5000 |
1880 |
2104 |
1210 |
|
3000*6000 |
2160 |
1583 |
1485 |
|
3300*4500 |
2020 |
1884 |
1175 |
|
3300*6500 |
2700 |
3015 |
1814 |
How to select floating pneumatic fenders?
1. Vessel Specifications
The size, displacement, and berthing speed of the vessel are the primary determinants. Larger vessels with higher displacement and berthing speed require pneumatic fenders with larger diameter, longer length, and higher energy absorption capacity. For example, VLCCs typically require pneumatic fenders with a diameter of 3-6 meters and a length of 10-20 meters.
2. Berthing Environment
- Wave and Current Conditions: In ports with strong waves or fast currents, the relative movement between the vessel and the berth is more significant. Foam-filled pneumatic fenders or high-pressure pneumatic fenders with better stability should be selected.
- Water Level Fluctuations: For ports with large tide differences, pneumatic fenders with adjustable hanging heights or flexible installation methods are preferred to ensure effective contact between the fender and the vessel hull at different water levels.
- Environmental Corrosion: In seawater environments with high salinity or oil pollution, pneumatic fenders made of corrosion-resistant and oil-resistant rubber (e.g., neoprene, EPDM) should be chosen.
3. Berth Structure
The type of berth (e.g., concrete wharf, steel pile wharf, offshore platform) and the available installation space determine the size and installation method of the pneumatic fenders. For berths with limited space, compact-sized pneumatic fenders or modular installation designs can be adopted.
Production process of floating pneumatic fender
Rubber preparing→ Making and testing inner rubber tube→Put fabric cord and rubber on→Vulcanization→Tyre chain installation
→Fendercompleted finish→Fender testing→Package and Shipment→Flating and Using.
Only fenders that pass all tests are labeled and packaged for delivery. We also maintain detailed production records for each batch to enable traceability.
Floating pneumatic fender use matters needing attention
1 Pneumatic pressure control in±5% of the rated pressure
2 Test pressure normally, add pressure in a timely manner
3 Avoid contact with sharp objects
4 When Long time not need, should wash to dry, filled with right amount of compressed air, placed in a cool dry ventilated place.
5 Storage place away from heat, acid and alkali, oil and grease
6 When store, shall not be folded and piled up
Application of floating pneumatic fender
Ship to ship transfers at seas.
Berthing operation that vessels to berth at dock/jetty.
Oil & gas tankers
Fast ferries & aluminum vessels
Temporary and permanent installations
Rapid response and emergencies
Liquid cargo and naval defense vessels
The storage of floating pneumatic fender
1.Wash the surface of the fender,dry up and fill in sufficient right amount of compressed air to lay them in a cool.dry and well-ventilated place.
2.The storage place should be away from heat.
3.Keep fender away from acid,alkali,grease and organic solvents
4.Fenders can't be piled up and heavy items when fenders are not used.
Company and Factory
Primary Marine Applications
Ship-to-Ship (STS) Transfers of crude oil, LNG, and bulk cargo at open-sea anchorage areas.
Oil, Gas, and Chemical Tanker Berthing requiring non-sparking safety environments.
Rapid Response and Emergency Mooring operations requiring fast equipment mobilization.
Ports and Harbors experiencing significant water level fluctuations and tidal surges.
Frequently Asked Questions (FAQ)
Q1: What international quality standards do your floating pneumatic fenders comply with?
A: Every Florescence floating pneumatic fender is designed, manufactured, and tested in strict accordance with the ISO 17357:2014 international standard, ensuring reliable performance under severe commercial mooring stresses.
Q2: How do I select the right initial internal pressure (50KPa vs. 80KPa) for my operation?
A: 50KPa fenders offer a softer reaction force, making them suitable for smaller watercraft or hulls requiring low hull pressure. 80KPa fenders provide significantly higher energy absorption, making them the standard choice for large container vessels, oil tankers, and open-sea STS operations.
Q3: Can these inflatable rubber fenders be repaired if the outer skin is punctured?
A: Yes. Minor cuts or punctures to the outer rubber layer can be fully repaired using specialized hot or cold vulcanization patch kits, provided the structural synthetic-tire-cord layers have not sustained catastrophic damage.
Q4: Do you support third-party inspection certificates for port procurement projects?
A: Yes. Every production batch supports full material traceability (MTC) and regular third-party performance certification by classification societies including SGS, Bureau Veritas (BV), CCS, and Lloyd's Register (LR) before factory dispatch.
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