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TLS news & blogs

The Critical Role of Paint Systems in Offshore Containers

7/4/2025

 
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


Offshore Container Lifting Test: The First Line of Safety Assurance

7/4/2025

 
In extreme offshore environments such as oil drilling platforms, offshore wind farms, FPSOs, and floating work zones, functional containers—such as accommodation modules, laboratories, control rooms, and equipment enclosures—serve not only as essential units for work and living but also as dual safeguards for equipment safety and personnel protection. In these scenarios, safely lifting containers onto decks or vessels is a critical and often underestimated process.

To ensure lifting operations are stable, secure, and controllable, offshore containers must undergo rigorous lifting tests and obtain third-party certification. This process is not only a regulatory requirement, but more importantly, a vital safeguard for life and property.

1. What is a Lifting Test?

A lifting test simulates the real-world lifting conditions of a container before it leaves the factory. It thoroughly examines the structural strength, weld integrity, and the robustness of lifting points (pad eyes). The test is carried out according to classification society or industry standards and serves two main purposes:
  • To verify that the lifting structure can support the design load.
  • To ensure that the structure does not undergo permanent deformation or failure under extreme conditions.

2. Why is Lifting Test Mandatory for Offshore Containers?

(1) Mandatory Compliance with Standards
Offshore containers are governed by stringent industry standards such as:
  • DNV 2.7-1: Design, manufacture, and certification of offshore containers
  • ISO 10855: Offshore containers used in the oil and gas industry
  • EN 12079: European standard covering lifting equipment and structural requirements
All of these standards mandate that containers must undergo lifting tests and obtain valid certification before delivery.

(2) High-Risk Marine Environments Demand Zero Compromise
Lifting operations at sea are exposed to confined spaces, vessel motion, and unpredictable weather. Any failure in the lifting structure or pad eyes can result in equipment damage, loss of life, or catastrophic accidents. A lifting test ensures structural integrity and reliability under such conditions.

(3) Essential for Project Approval and Global Market Access
Oil & gas operators, EPC contractors, and classification societies routinely inspect lifting design and certified test results. Containers without certified lifting tests will be rejected from offshore sites.

3. How is a Lifting Test Performed?

TLS follows a standard process to ensure safe and certified lifting capability:
(1) Pad Eye Inspection & Structural Review
  • Pad eyes are manufactured using high-strength steel.
  • Welds are subjected to non-destructive testing (NDT) such as UT or MT.
  • The integration of lifting points with the frame is examined for structural integrity.

(2) Static Load Test
  • Load applied at 2 times the rated lifting capacity, as per DNV 2.7-1.
  • Container is suspended for at least 5 minutes.
  • Checked for any signs of deformation, cracks, or structural failures.

(3) Dynamic Load Test (if required)
  • Simulates lifting operations with movement and sway.
  • Monitors structural fatigue and elastic recovery under repeated loading.

(4) Final Certification

Upon successful testing, a certificate is issued by an accredited classification society (e.g., DNV, BV, LR, CCS).
This certificate accompanies the container upon delivery and is recognized by global offshore project stakeholders.

4. TLS Practice in Lifting Test Assurance

As a specialized manufacturer of offshore functional containers, TLS conducts lifting tests on every unit destined for marine environments. Our process includes:
  • Full compliance with DNV 2.7-1 or custom project specifications
  • On-site testing with professional lifting rigs and calibrated equipment
  • Third-party witness testing and traceable documentation
  • Issuance of globally recognized, valid lifting certificates

5. Conclusion: Safety Starts with Testing and Ends with Trust

Behind each seemingly simple lift lies a comprehensive evaluation of structural design, welding, material quality, and load handling capability. Only through a standardized and certified lifting test can every lifting operation be performed with confidence—establishing an unbreakable safety foundation for offshore operations.

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 (15):#Offshore container,#Lifting test,#DNV 2.7-1,#Pad eye inspection,#Load testing,#Static load test,#Dynamic lifting test,#Third-party certification,#ISO 10855,#Non-destructive testing (NDT),#Offshore safety,#Marine container lifting,#FPSO equipment,#Lifting certificate

Written by Snowy


Ensuring Peak Performance: Why Rigorous Testing Makes TLS Offshore Containers Stand Out

5/30/2025

 
​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


Comprehensive Guide to Factory Acceptance Testing (FAT) for PDU/Workshop Pressurized Containers

1/3/2025

 
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


Comprehensive Welding Inspections: Ensuring the Safety and Reliability of TLS Offshore Containers

11/8/2024

 
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

Written by Oliver


Optimizing Offshore Container Painting for Durability in Harsh Environments

12/22/2023

 
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

Written by Oliver


Why is the Specialized Container Lifting and Dropping Test Crucial Across Industries?

10/9/2023

 
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.

Visual Inspection and Non-Destructive Testing for Container Welds

8/31/2023

 
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

Written by Oliver


What are the video inspections of explosion-proof pressure containers, which are usually checked?

7/20/2023

 
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
offshore workshop pressurized
CPFG INSPECTION
INSULATION RESISTANCE TEST
Visual inspection
unctional check
TLS OFFSHORE

Pre-Shipment Testing of Positive Pressure Containers - Ensuring Quality and Safety

6/7/2023

 
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.
inspection
circuit testing
CPFG TEST
emergency door
positive pressure container
airlock room
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