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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.
 

Welding is a crucial process in the construction and maintenance of offshore containers, ensuring the structural integrity and durability of these containers in harsh marine environments. To ensure the highest level of safety and reliability, welding inspection plays an essential role in identifying any potential flaws that could lead to structural failure. At TLS, we prioritize stringent welding inspection protocols in line with international standards, aiming to deliver top-quality, secure containers for offshore operations.
 
Why Welding Inspection is Critical for Offshore Containers 
Offshore containers endure extreme conditions, including exposure to saltwater, heavy loads, and severe weather, all of which put stress on welded joints. Even minor defects in welds can weaken the container’s structure, leading to potential safety risks. Welding inspection, as part of a comprehensive non-destructive testing (NDT) regimen, helps detect cracks, pores, and other imperfections that could compromise the container’s structural integrity.
 
Common Welding Inspection Methods
To maintain the quality and durability of TLS offshore containers, we employ a range of NDT methods to inspect welds. Here are some of the primary methods used in the industry:

1. Visual Inspection: The most straightforward approach, visual inspection involves examining the weld surface for visible defects such as cracks, undercuts, and improper welding techniques.
2. Ultrasonic Testing: This method utilizes sound waves to penetrate the weld and detect internal flaws that may not be visible on the surface, such as inclusions or porosity.
3. Magnetic Particle Testing: Widely used by TLS, this technique involves applying a magnetic field to the welded area and then coating it with magnetic powder. Any surface or near-surface defect disrupts the magnetic field, causing the powder to accumulate at the defect, making it easy to detect.
4. Radiographic Testing: By using X-rays or gamma rays, radiographic testing can capture images of the weld, revealing internal discontinuities and enabling detailed inspection of the weld’s structure.
5. Eddy Current Testing: This technique is effective for detecting surface cracks in conductive materials. It works by inducing currents that create a magnetic field, revealing flaws as changes in the electrical flow.

TLS's Approach to Welding Inspection
At TLS, we adhere to strict international standards for both production and inspection to ensure our offshore containers meet the highest quality requirements. Magnetic Particle Testing (MPT) is one of the preferred NDT methods we employ due to its reliability in detecting surface and near-surface flaws, crucial for offshore containers. Here’s an overview of our MPT process:

• Surface Preparation: We begin by cleaning the container surface, removing any grease, dirt, or impurities that might interfere with the inspection.
• Applying Magnetic Powder: A fine layer of magnetic powder is evenly applied to the surface, usually consisting of iron and magnetic particles.
• Magnetization: The container is placed in a magnetic field, which may be constant or alternating based on inspection requirements.
• Flaw Detection: A light source or magnetic probe helps visualize the magnetic powder distribution, revealing any cracks or imperfections on the surface.

The TLS Commitment to Quality
By incorporating advanced NDT techniques, TLS ensures that every offshore container meets strict quality control standards. Our dedication to robust welding inspection practices allows us to deliver containers that are both durable and dependable, ready for the toughest offshore conditions.
 
 
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 welding inspection, #Non-destructive testing (#NDT) for offshore containers, #Magnetic particle testing (#MPT) for containers, #Offshore container safety standards, #Structural integrity of offshore containers, #Welding defect detection, #Offshore container quality assurance, #TLS offshore container inspection, #Ultrasonic testing for offshore containers, #NDT methods for offshore welding, #Welding flaw detection techniques

In the challenging realm of offshore container transportation, ensuring robust corrosion resistance is paramount. Our streamlined process at TLS guarantees optimal anti-corrosion performance, tackling high temperatures, humidity, and salt spray.

1. Surface Preparation: Eliminate oxide scale, rust, and contaminants from steel structures. Our automated assembly line applies protective zinc-rich primers post-shot-blasting, preventing rust in gaps created during container manufacturing.
2. Precision Shot-Blasting: Prioritize welds and heat-sensitive areas for shot-blasting pre-painting. Smooth steel surfaces are key, free from burrs, dust, and sharp edges, with rough-cut edges ground to a 2mm radius.
3. Strategic Pre-Coating: Address challenging areas like steel plate edges, welds, and corners with pre-coating, ensuring comprehensive coverage.
4. Flawless Spray Application: Each coating is expertly applied, guaranteeing even coverage. Vigilance against paint defects like missing spots, sags, drips, pinholes, blisters, and leaks is our commitment.
5. Accelerated Drying Process: Optimize the curing process for quicker drying, reinforcing the longevity of the coating.
6. Eco-Friendly Water-Soluble Paints: TLS prioritizes environmentally friendly practices, utilizing water-soluble paints for a sustainable approach to container coating.
7. Certified Operators: Our coating operators hold relevant technical certifications, ensuring the highest standards in the application process.
8. End Result: TLS containers boast unparalleled resistance to corrosion, paint failure, fading, and discoloration, ensuring optimal functionality in the harshest offshore conditions.

 
In summary, TLS has perfected an optimized offshore container painting process, ensuring durability in harsh environments. The comprehensive approach involves meticulous surface preparation, precision shot-blasting, strategic pre-coating, flawless spray application, and accelerated drying. Using eco-friendly water-soluble paints and certified operators, TLS guarantees containers resistant to corrosion, paint failure, fading, and discoloration. Explore the TLS advantage for long-lasting and high-performance offshore containers.
 

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.
 

Key words: #Offshore containers #Container painting #Anti-corrosion #Surface preparation #Corrosion resistance #Paint application #Eco-friendly paints #Water-soluble paints #Durability #Harsh environments

In various fields, specialized containers play a crucial role, ensuring structural stability and safety during transportation and use, from pressure vessels to experimental equipment and Modular Control Centers (MCC) shelters. The lifting and dropping test of specialized containers has become a pivotal step in ensuring their safe application across diverse domains. In this article, we will delve into the significance of the specialized container lifting and dropping test and its critical roles in different sectors.

• Ensuring Structural Strength:

Specialized containers are often used to transport and store high-pressure gases, chemicals, experimental equipment, and other sensitive or hazardous goods. The lifting and dropping test verifies the structural strength of these containers under external pressure and impact. This testing helps confirm whether specialized containers can maintain integrity under extreme conditions, preventing safety accidents caused by structural issues.

• Validating Stability:

Specialized containers might need to be lifted, moved, and stacked during usage, demanding excellent stability. The lifting and dropping test simulates real operational scenarios, validating the stability of specialized containers during lifting and stacking. This test ensures that the containers remain balanced and do not tip over, preventing leaks or structural damage under various working conditions.

• Reducing Operational Risks:

Specialized containers are commonly employed for handling dangerous goods or expensive equipment, making operational risks extremely high. By conducting lifting and dropping tests, structural issues can be identified in advance, minimizing the risk of accidents during usage. This not only safeguards personnel but also reduces property losses.

In many industries, the use of specialized containers must comply with strict industry standards and regulations. Conducting lifting and dropping tests is a necessary step to meet these standards and regulations. Qualified specialized containers can obtain the necessary certifications, ensuring legal and secure usage.

In summary, the lifting and dropping test for specialized containers is not just a routine procedure; it is a crucial means of ensuring safe application across various sectors. Through this specialized testing, specialized containers can be safely transported and used under various extreme conditions, providing reliable assurance for industries, ensuring both personnel and property safety.

At TLS Offshore Containers, we are committed to providing excellent container products and outstanding services to our clients. We understand that when it comes to specialized containers, quality is your utmost concern. Therefore, we meticulously control every step to ensure our products meet the highest standards, fulfilling your expectations and requirements. For any container-related needs, please contact us.

Container weld inspections are crucial to ensure structural integrity and safety. Among the non-destructive testing methods available, Magnetic Particle Inspection (MPI) stands out. This technique utilizes magnetic powders to reveal defects and discontinuities in ferromagnetic materials without causing any damage.
 
The process of MPI involves magnetizing the ferromagnetic workpiece, which leads to localized distortions in the magnetic field lines when discontinuities are present. This results in a leakage magnetic field that attracts magnetic powders applied to the surface. When appropriately illuminated, these powders form visible indications, allowing for the identification of location, size, shape, and severity of any defects.
 
For effective flaw detection, TLS employs black magnetic paste during MPI. This specific approach boasts high sensitivity in detecting even the smallest surface imperfections. The procedure comprises the following steps:

1. Application of Magnetic Levitation: A slow and controlled application of magnetic levitation over the workpiece prevents the washing away of magnetic imprints.
2. Utilization of Fixed Devices: Implementing fixed devices streamlines the process, ensuring ease of operation and high efficiency.
3. Demagnetization: This step reduces residual magnetism in the inspected workpiece, enabling subsequent processing or normal usage.
4. Removal and Drying: After the magnetic particle inspection, any residual magnetic levitation on the surface is removed and dried.

 
All our Quality Assurance personnel undergo rigorous certification examinations. At TLS, we uphold an unwavering commitment to product quality, delivering only after thorough confirmation that our offerings align with stringent quality inspection standards.
 
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.
 
#Container weld inspections #Non-destructive testing #Magnetic Particle Inspection #MPI technique #Ferromagnetic materials #Defect detection #Discontinuity identification #Structural integrity #Safety standards #Surface imperfections

During the video inspection of explosion-proof pressure containers, several critical aspects are thoroughly examined to ensure their safety and compliance with regulations. The inspection process includes the following key areas:

• 1. Visual inspection

Including the inspection of the positive pressure explosion-proof control system and various major accessories for installation. At the same time, it is also necessary to check the details of the sealing of the positive pressure container and whether the labels are in place. We will check them one by one according to the customer's configuration

• 2. Insulation resistance test
• 3. Functional check

Positive pressure explosion-proof containers usually have 3 modes：Automatic mode, Bypass mode, Manual mode.
Check the functions of all modes, and the functional tests of all modes will be carried out one by one according to the regulations on the FAT file.
Automatic mode: normal use in hazardous areas
Bypass mode: can only be used in safe area
Manual mode: for emergency use only
In "bypass mode" and "manual mode", the explosion-proof fan can be started manually only when the air inlet and outlet valves are fully opened; when the air valve is not fully opened, the manual switch of the explosion-proof fan is invalid.

​TLS pays attention to every detail of the product, please feel free to contact us for any needs

Positive pressure containers are essential safety equipment used in industries operating in explosive environments. Before these containers are shipped, several crucial preparations and tests are conducted to ensure their quality and functionality. This article provides insights into the pre-shipment preparations for positive pressure containers, giving you a better understanding of the measures taken to ensure a safe and reliable product.

• Visual Inspection and Quality Checks:

One of the initial steps in preparing positive pressure containers for shipment involves a comprehensive visual inspection and quality checks. Engineers and quality inspectors meticulously examine the container's external appearance, equipment fittings, and signage. They verify that the container meets design specifications, adheres to safety standards, and fulfills customer requirements. This meticulous inspection guarantees the container's overall quality and reliability.

• Functional Testing of Critical Systems:

Before shipping, positive pressure containers undergo thorough functional testing of their critical systems. Engineers and technicians evaluate the performance of essential components, such as the CPFG control system, temperature sensors, smoke detectors, Manual Call Points (MCP), Emergency Shutdown (ESD) buttons, pressure differential gauges, fire dampers, and fans. This rigorous testing ensures that all systems operate as intended, creating a controlled and safe environment within the container.

• Customization to Meet Specific Needs:

Positive pressure containers are often customized to meet the specific needs of different industries and customers. As part of the pre-shipment preparations, customization is done to fulfill these unique requirements. This may involve incorporating additional safety features, modifying equipment placements, or adapting the container's functionality. By tailoring the container to meet specific needs, it ensures optimal safety and operational efficiency for the end user.

• Documentation and Compliance:

Another important aspect of pre-shipment preparations is ensuring proper documentation and compliance. Engineers and quality inspectors verify that all necessary documentation, including certifications, test reports, and compliance with industry regulations, is in order. This ensures that the container meets the required standards and can be safely transported and installed at its destination.

• Final Checks and Packaging:

Before the positive pressure container is shipped, a final round of checks is conducted to ensure that everything is in order. This includes verifying that all equipment is securely fastened, labels and markings are clear and accurate, and any necessary protective measures are in place to prevent damage during transit. The container is then carefully packaged to ensure it arrives at its destination in optimal condition.

The design and construction of offshore containers, as well as their lifting equipment, are subject to strict regulations and standards to ensure their safety and reliability in the challenging operating environment of offshore oil rigs. The DNV 2.7-1 and EN 12079 standards set out the requirements for the design, manufacture, testing, and certification of offshore containers, including their top corner piece structure and lifting equipment.
 
To ensure that these containers are safe and reliable, a series of tests are conducted. These tests include:
 
1. All Point Lifting Test: This test involves placing a weight of 2.5R-T inside the container and measuring the deformation of the bottom frame while the container is lifted at all four corners for 5 minutes. After 5 minutes, the deformation of the bottom frame is measured.

2. Two-Point Lifting Test: In this test, the weight inside the container is reduced to 1.5R-T, and the deformation of the bottom frame is measured.

3. Fork Pocket Lifting Test (if applicable): If the container has fork pockets, this test involves adjusting the weight inside the container to 1.6R-T and measuring the deformation of the bottom frame while fixing the fork arm with angle pieces or jacking up the container and standing still for 5 minutes. For small containers, the container is directly lifted with a forklift and held still for 5 minutes, after which the data is recorded.

4. Vertical Impact Test: For this test, the weight inside the container is adjusted to the R-T state.To lift a container, appropriate shackles and wire rope slings should be installed on all four lifting points according to the design requirements specified in the drawing. The lifting point of the wire rope should be adjusted to ensure that the container is at a certain slope. When lifting the container, it should be unloaded quickly between the hook of the crane and the wire rope, and the container should be pulled by the rope to prevent it from swinging randomly. Once the container is lifted to the cement surface, adjust the tilt angle of the bottom side beam of the box by 5 degrees. The highest point of the bottom frame should not be higher than the lowest point by more than 400 mm. Make sure that the lowest point of the bottom frame is at least 5 cm away from the ground to operate the quick shackle, allowing the container to free fall. After the test is completed, inspect all structural parts of the container for any cracks or damage.
 
The main purpose of the tests is to examine the impact of the lifting and placing of containers at sea to ensure that the cabinet can withstand the damage caused by the impact. 

Unlike ordinary dry cargo containers, which are primarily used for land transportation, offshore containers are specialized containers used on offshore oil rigs;  Therefore, there is a well-established set of European standards for their design and manufacture, including DNV 2.7-1 and EN 12079.
Marine containers are mainly used on marine drilling platforms, where the operating environment is demanding and frequent hoisting is required, which places high requirements on container hoisting equipment.
All four corners of the top of the container have a top corner piece structure. The top corner piece structure consists of a standard container top corner piece, a lifting lug, and a reinforcing piece.
The uplifted ears are located on the inner side of the top horn, adjacent to it, and are arranged and fixed to it. The four-point or two-point lifting of a container can be performed by means of a hoist, and therefore there is a higher strength requirement on the hoist itself as well as on the top of the box in which the hoist is mounted. The lifted lug material must have low-temperature shock resistance properties.
The reinforcing piece consists of a bottom plate for the lifting lug, and a coaming plate arranged on three sides of the bottom plate of the lifting lug. The setting of the coaming plate not only strengthens the lifting ear area but also protects the lifting ear.
When lifted, a special sling is used, the shackles are passed through the eye holes and locked firmly, then the sling is lifted through the main ring of the sling.

Compared with the design durability of C5-H of 15-25 years, the corresponding dry film thickness of C5-VH is 320μm, and the design life of C5-VH is over 25 years. 
Specific parameters are as follows: 

• Shop primer (pretreatment) 10 μm 
• Epoxy zinc primer (secondary primer) 100 μm 
• Epoxy intermediate coating 150 μm 
• Polyurethane finish 60 μm

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.
E-mail: [email protected]  
Hotline: +65-65637288; +65-31386967

​Key words:
​#FPSO Application  #Offshore containers  #DNV271 certified containers  #C5VH Painting