In offshore environments, where conditions are harsh and unrelenting, paint is far more than just an aesthetic finish—it is a critical component that ensures structural protection, long service life, and regulatory compliance. A high-performance coating system is essential to safeguard the safety, reliability, and certification standards of offshore containers.

1. Harsh Marine Environment: The Real ChallengeOffshore containers operate under extreme conditions that test the limits of any surface treatment:
  • High salinity and humidity: Salt-laden air accelerates metal corrosion.
  • Intense UV radiation: Leads to surface degradation and material aging.
  • Drastic temperature changes and wave impact: May cause coating cracks or peeling.
  • Continuous exposure to rain, oil, and contaminants: Challenges coating adhesion and chemical resistance.
Standard industrial coatings are insufficient—marine-grade protective systems are essential.

2. Key Functions of Offshore Paint Systems(1). Corrosion ProtectionA quality paint system is the first line of defense against steel corrosion. Common marine systems include zinc-rich epoxy primer, epoxy intermediate coat, and polyurethane or acrylic topcoat, meeting the requirements of ISO 12944 C5-M, the highest corrosion category. Such systems can offer protection for 15+ years.

(2). Fire ResistanceSpecialized offshore containers—such as accommodation units and control cabins—often require A60 fire protection. In these cases, fire-retardant coatings certified for high-temperature resistance are used to slow down fire spread, offering critical time for personnel evacuation.

(3). UV Resistance and Aging DurabilityTopcoats formulated with UV-resistant and anti-chalking properties help maintain surface integrity and visual appearance under constant sun exposure, especially on decks and external walls.

(4). Functional Identification and VisibilityColor-coded coatings help distinguish functional zones (e.g., living quarters, power rooms, labs). Reflective and safety markings further improve visibility, especially in low-light offshore environments.

3. Typical Paint System Configuration
  • Primer: Zinc-rich epoxy – corrosion and rust prevention
  • Intermediate Coat: Epoxy – enhanced adhesion and barrier properties
  • Topcoat: Polyurethane or acrylic – weather resistance and aesthetics
These systems typically achieve a dry film thickness (DFT) of 220–300μm, suitable for long-term protection in aggressive marine conditions.

4. Key Certifications and StandardsTo ensure durability, safety, and compliance, offshore container coatings must meet several international standards:
  • ISO 12944: Defines corrosion categories and service life expectations of protective systems.
  • IMO MSC.215(82) / PSPC: Regulates performance of protective coatings for marine and offshore equipment.
  • NORSOK M-501: Norwegian standard for surface preparation and coating in oil & gas sectors.
  • Class Society Approvals (DNV, ABS, LR, etc.): Essential for most offshore modules; coatings are reviewed as part of structural integrity.
  • IMO A754 (Fire Protection): Ensures fireproof coatings meet A60 insulation and integrity standards.
  • Surface Preparation: Steel must be blasted to Sa2.5 to ensure proper coating adhesion and longevity.

5. Final Thoughts

In offshore functional containers, paint is not optional—it’s essential. A professionally designed and certified coating system not only protects against corrosion and fire but also extends the container's service life, reduces long-term maintenance costs, and elevates your brand’s reputation in the marine and offshore industry.

TLS Offshore Containers / TLS Special Containers is a global supplier of standard and customised containerised solutions. 
Wherever you are in the world TLS can help you, please contact us.

Keywords:#Offshore container,#Marine paint system,#Corrosion protection,#ISO 12944,#C5-M coating,#Fire-retardant coating,#A60 fire protection,#UV-resistant coating,#Epoxy primer,#Polyurethane topcoat,#NORSOK M-501,#IMO PSPC standard,#Sa2.5 surface preparation,#DNV certification,#Offshore equipment durability
 

Written by Snowy

​In the demanding world of offshore operations, where safety and reliability are non-negotiable, the integrity of every piece of equipment is paramount. This is especially true for offshore containers and their lifting equipment, which face extreme conditions daily. At TLS, we understand these challenges, which is why our containers are not just built to meet, but to exceed, the industry's most stringent standards, including DNV 2.7-1 and EN 12079.

These international standards aren't just guidelines; they're the bedrock of safety in offshore environments. They dictate everything from the design and manufacturing to the rigorous testing and certification processes that ensure an offshore container can withstand the immense stresses of its operational life. For TLS containers, this commitment to excellence is deeply embedded in our DNA.

The Gauntlet of Tests: What Makes TLS Containers Truly Robust
Before any TLS offshore container is deployed, it undergoes a series of intensive tests designed to simulate the harshest real-world conditions. These aren't just checks; they're comprehensive evaluations that prove the container's resilience and reliability.

1. All Point Lifting Test: Proving Structural Integrity Under Pressure
Imagine a container loaded with 2.5 times its rated payload (2.5R−T). During this test, the container is lifted simultaneously from all four corners and held for five minutes. This critical assessment allows us to precisely measure any deformation of the bottom frame, ensuring that the container's core structure can handle maximum loads without compromise.

2. Two-Point Lifting Test: Simulating Real-World Lifting Scenarios
Offshore operations aren't always perfectly balanced. The two-point lifting test simulates less-than-ideal lifting conditions. With the internal weight reduced to 1.5 times the rated payload (1.5R−T), we again meticulously measure the bottom frame deformation. This guarantees the container's stability and integrity even when lifted unevenly.

3. Fork Pocket Lifting Test (When Applicable): Strengthening Critical Interfaces
For containers equipped with fork pockets, this test is vital. With a weight of 1.6 times the rated payload (1.6R−T), the container is lifted via its fork pockets and held for five minutes. Whether by securing the fork arms or using a forklift directly for smaller containers, this test verifies the strength and durability of these crucial lifting points, preventing structural failure.

4. Vertical Impact Test: Designed for the Dynamic Offshore Environment
Perhaps the most telling test for offshore containers is the vertical impact test. This simulates the dynamic forces of being lifted and placed at sea, specifically designed to identify weaknesses from sudden impacts. With the container loaded to its rated payload (R−T), it's lifted with specially installed shackles and wire rope slings. The lift point is adjusted to create a 5-degree tilt in the bottom side beam, ensuring the highest point of the bottom frame is no more than 400mm above the lowest, and the lowest point is at least 5cm from the ground.

Then, the container is free-fallen by quickly releasing the shackle. After this controlled impact, every structural part of the container is thoroughly inspected for any cracks or damage. This stringent evaluation ensures that TLS containers can withstand the inevitable impacts of offshore operations, maintaining their structural integrity and protecting valuable cargo and personnel.

At TLS, our commitment to safety and reliability is unwavering. Through these rigorous testing protocols, we provide offshore containers that offer unmatched durability and peace of mind in the most challenging maritime environments.

Looking for offshore containers that meet the highest standards of safety and performance? Explore our range of DNV 2.7-1 and EN 12079 certified solutions today!

TLS Offshore Containers / TLS Special Containers is a global supplier of standard and customised containerised solutions. 
Wherever you are in the world TLS can help you, please contact us.
 
 
Keywords: #Offshore containers, #DNV 2.7-1 containers, #Offshore container testing, #EN 12079 containers, #Offshore lifting equipment testing, #Container structural integrity tests, #Vertical impact test offshore container #Fork pocket lifting test offshore, #Safety standards offshore containers, #Reliable offshore containers

Written by Oliver

A Factory Acceptance Test (FAT) is a critical procedure to verify the functionality, safety, and reliability of equipment before it’s deployed. In the case of the Pressurized Container, which serves as an essential component in explosion-proof control systems, the FAT ensures that all systems are working optimally and safely under real operational conditions. Below is a comprehensive guide on how the FAT for a pressurized container is performed, covering everything from visual inspection to system performance tests.
 
1. Visual Inspection: Ensuring Proper Installation and Functionality
 
The FAT begins with a thorough visual inspection of the equipment and its installation. This includes verifying the placement of key elements like the Ex d CPFG control box, emergency shutdown switches, and combustible gas detectors, which are integral to the system's safety and operational capabilities. Below are the key components inspected:
 
  • Control and Emergency Power Systems: This includes explosion-proof boxes, emergency power switches, and the safety mechanisms such as gas detectors (e.g., H2S detectors), temperature/smoke sensors, and fire alarms.
  • Differential Pressure Components: Ensuring that the differential pressure transmitters and gauges are properly connected to the gas pipes is essential to maintaining positive pressure and preventing hazardous situations.
  • Emergency Systems: The presence of emergency shutdown switches, alarms, lights, and fire extinguishers are verified.
  • Grounding and Cable Inspections: A detailed check is performed on grounding systems, cable glands, and cable penetration sealing modules (MCT) to ensure proper insulation and prevent electrical hazards.
  • Seal and Label Checks: Another crucial aspect is checking the pressurized room seals and the door labels, which should clearly indicate warnings about the pressurized nature of the room, ensuring that personnel follow the correct safety procedures.
 
2. Insulation Resistance Test: Verifying Electrical Integrity
 
An insulation resistance test is carried out to ensure that all electrical components are properly insulated, which is necessary for preventing electrical faults or short circuits.
 
3. Power-On Inspection: Validating Electrical Power Systems
 
The next phase of the FAT involves verifying that the electrical systems are powered on correctly:
 
  • Voltage Measurements: The input voltage of the CPFG control box and its control power supply output are checked.
  • PLC Power Supply: The power supply to the PLC is verified, with the fuse checked to ensure that the system is properly powered and operational.
  • Touch Screen Check: The system's touch screen should display normal operations and be responsive to commands.
 
4. System Display Screen Operation: Ensuring User Interface Functionality
 
During the FAT, the system's display screens undergo a series of checks to confirm proper operation and functionality. These checks include:
 
  • Screen Cycling: Ensuring that the system cycles through different screens correctly, from the main display to alarm and status screens.
  • Debug Mode: Ensuring that the system enters debugging mode for troubleshooting and configuration purposes.
  • Alarm Confirmation and Testing: Checking that the alarm system operates correctly, providing audible and visual alerts when needed.
 
5. Function Check: Testing System Operations Under Various Conditions
 
In this phase, the system is put through a series of operational checks under various conditions to ensure it reacts correctly to real-world scenarios:
 
  • Normal and Bypass Operations: The system is tested in both normal and bypass modes to confirm that power and fan operations can be toggled appropriately.
  • Alarm Tests: Various alarms are simulated, including combustible gas detection, low and high gas concentrations, fire alarms, and H2S gas detection. The system should automatically cut off power and sound alarms when necessary.
  • Fan and Flow Rate Testing: The fan system and airflow are monitored, ensuring that the fan responds to changes in pressure or other alarm conditions, and that ventilation is maintained as per system requirements.
  • Emergency Shutdown Test: The system’s emergency shutdown mechanism is triggered during simulated emergencies, ensuring that power is safely cut off in the event of a fault.
  • Sensor Integrity Test: Sensor disconnections are simulated to ensure that the system responds promptly with alarms and performs an automatic shutdown if necessary.
 
Conclusion:
 
Once all the checks have been completed and all tests have been successfully passed, the equipment is deemed ready for deployment. The FAT report will detail each test's result, any issues encountered, and the corrective actions taken. The successful completion of the FAT ensures that the Pressurized Container will function safely and efficiently in real-world applications, meeting all required standards and regulations.
This detailed testing process helps prevent costly failures or safety hazards once the equipment is put into operation. By thoroughly evaluating the system’s performance and safety mechanisms, the FAT ensures that the pressurized container will operate smoothly in explosive environments, providing reliable protection for both personnel and equipment.
 
 
TLS Offshore Containers / TLS Special Containers is a global supplier of standard and customised containerised solutions. 
Wherever you are in the world TLS can help you, please contact us.
 
 
More information,please visit the below website: https://www.tls-containers.com/tls-blog/category/container-test
 
 
Keywords: #Factory Acceptance Test (FAT),#PDU Pressurized Container,#Explosion-proof systems,#Visual inspection,#Insulation resistance test,#Electrical integrity,#Emergency shutdown systems,#Combustible gas detection,#System performance testing,#Safety mechanisms,#Operational reliability,#Differential pressure components,#Grounding systems,#Alarm system functionality,#Emergency shutdown test,#Real-world scenario testing.
 

Written by Snowy