In high-risk industries such as petrochemicals, energy storage, and hazardous operations, positive pressure containers play a critical role in protecting both personnel and equipment. Ensuring their structural reliability is essential. One of the most important validation steps is the lifting test, which verifies the strength and stability of the container under operational conditions. This test is also key for obtaining international certifications like DNV 2.7-1 and EN 12079.
Purpose of the Lifting Test
The lifting test serves several critical functions:
Testing Procedure
The lifting test typically follows these steps:
Results and Applications
After testing, a third-party inspection report documents:
Conclusion
Lifting tests are a critical step in validating the structural safety of positive pressure containers. At TLS, all lifting tests are performed according to international standards, guaranteeing that every container delivered meets stringent safety and reliability requirements for high-risk environments.
TLS Offshore Containers / TLS Energy is a global supplier of standard and customised containerised solutions.
Wherever you are in the world TLS can help you, please contact us.
Keywords:#Positive Pressure Container,#Lifting Test,#Structural Safety,#Load Capacity Verification,#Industrial Certification,#DNV 2.7-1,#EN 12079,#Hazardous Environment,#Factory Acceptance Test (FAT),#Container Stability
Purpose of the Lifting Test
The lifting test serves several critical functions:
- Verify load capacity: Ensures that lifting points, base frames, and the overall structure can safely handle both rated and overload conditions.
- Check structural stability: Confirms that the container maintains its shape during lifting and that welds and connections remain intact.
- Support certification: Provides third-party testing evidence required for international standard compliance and customer assurance.
Testing Procedure
The lifting test typically follows these steps:
- Applying load: The container is lifted using cranes at specified angles, often around 45°, to simulate real-world lifting scenarios.
- Load levels: The applied load ranges from 100% to 125% of the safe working load to evaluate performance under overload conditions.
- Test duration: The container is held in the lifted position for several minutes to observe any structural shifts.
- Inspection points: Lifting points, base frame, welds, and overall structure are carefully checked for permanent deformation or damage.
Results and Applications
After testing, a third-party inspection report documents:
- Applied loads, lifting angles, and duration
- Any observed structural deformation or damage
- Final pass/fail evaluation
Conclusion
Lifting tests are a critical step in validating the structural safety of positive pressure containers. At TLS, all lifting tests are performed according to international standards, guaranteeing that every container delivered meets stringent safety and reliability requirements for high-risk environments.
TLS Offshore Containers / TLS Energy is a global supplier of standard and customised containerised solutions.
Wherever you are in the world TLS can help you, please contact us.
Keywords:#Positive Pressure Container,#Lifting Test,#Structural Safety,#Load Capacity Verification,#Industrial Certification,#DNV 2.7-1,#EN 12079,#Hazardous Environment,#Factory Acceptance Test (FAT),#Container Stability
Written by Snowy
In high-safety environments such as laboratories, chemical plants, and new energy facilities, positive and negative pressure test containers are widely used to achieve effective environmental isolation and risk control. Stable and controllable ventilation is the foundation of safe operation. As the core driving equipment of the pressure control system, centrifugal fans play a critical role in maintaining reliable pressure conditions.
At TLS, centrifugal fans are systematically integrated with control systems in both positive and negative pressure test containers, providing stable, efficient, and application-specific pressure management solutions.
Application in Positive Pressure Test Containers
In positive pressure test containers, centrifugal fans continuously supply fresh air into the enclosure, maintaining the internal pressure higher than the surrounding environment. This positive pressure barrier effectively prevents external dust, harmful gases, and contaminants from entering the container, ensuring a clean and safe internal environment.
TLS selects centrifugal fans based on required airflow, pressure levels, and operational modes for different applications. Combined with optimized airflow design and high-performance sealing structures, the system ensures a stable and controllable positive pressure state, supporting safe equipment operation and personnel activities inside the container.
Application in Negative Pressure Test Containers
In negative pressure test containers, centrifugal fans are primarily used for controlled exhaust. By continuously extracting air from the enclosure, the internal pressure is kept lower than the external environment. This design prevents hazardous gases, pollutants, or test media from leaking outside the container, significantly reducing safety risks to personnel and surrounding areas.
TLS negative pressure solutions focus on exhaust stability and pressure consistency. The centrifugal fans are carefully matched with exhaust ducting and flow paths, ensuring uniform and reliable negative pressure conditions for high-risk testing and experimental applications.
System Control and Integrated Safety Design
To maintain long-term pressure stability, TLS integrates centrifugal fans with pressure sensors, pressure controllers, and airflow regulation devices. The control system continuously monitors internal pressure and automatically adjusts fan speed and airflow to achieve precise pressure control.
In addition, the container structure is designed with high airtightness and can be configured with explosion-proof components, interlock systems, and safety alarms based on project requirements. This integrated approach enhances overall system reliability and safety performance.
Conclusion
Through proven system design and strong customization capabilities, TLS effectively combines centrifugal fans with positive and negative pressure control strategies. The result is a stable, safe, and adaptable solution for various test container applications, meeting the demanding requirements of high-risk industrial environments.
TLS Offshore Containers / TLS Energy is a global supplier of standard and customised containerised solutions.
Wherever you are in the world, TLS can help you. Please contact us.
Keywords：#Centrifugal Fan,#Positive Pressure Test Container,#Negative Pressure Test Container,#Pressure Control System,#Industrial Ventilation,#Hazardous Environment Safety,#Laboratory Container Solutions,#Controlled Exhaust System,#Airtight Container Design,#Customized Test Containers
At TLS, centrifugal fans are systematically integrated with control systems in both positive and negative pressure test containers, providing stable, efficient, and application-specific pressure management solutions.
Application in Positive Pressure Test Containers
In positive pressure test containers, centrifugal fans continuously supply fresh air into the enclosure, maintaining the internal pressure higher than the surrounding environment. This positive pressure barrier effectively prevents external dust, harmful gases, and contaminants from entering the container, ensuring a clean and safe internal environment.
TLS selects centrifugal fans based on required airflow, pressure levels, and operational modes for different applications. Combined with optimized airflow design and high-performance sealing structures, the system ensures a stable and controllable positive pressure state, supporting safe equipment operation and personnel activities inside the container.
Application in Negative Pressure Test Containers
In negative pressure test containers, centrifugal fans are primarily used for controlled exhaust. By continuously extracting air from the enclosure, the internal pressure is kept lower than the external environment. This design prevents hazardous gases, pollutants, or test media from leaking outside the container, significantly reducing safety risks to personnel and surrounding areas.
TLS negative pressure solutions focus on exhaust stability and pressure consistency. The centrifugal fans are carefully matched with exhaust ducting and flow paths, ensuring uniform and reliable negative pressure conditions for high-risk testing and experimental applications.
System Control and Integrated Safety Design
To maintain long-term pressure stability, TLS integrates centrifugal fans with pressure sensors, pressure controllers, and airflow regulation devices. The control system continuously monitors internal pressure and automatically adjusts fan speed and airflow to achieve precise pressure control.
In addition, the container structure is designed with high airtightness and can be configured with explosion-proof components, interlock systems, and safety alarms based on project requirements. This integrated approach enhances overall system reliability and safety performance.
Conclusion
Through proven system design and strong customization capabilities, TLS effectively combines centrifugal fans with positive and negative pressure control strategies. The result is a stable, safe, and adaptable solution for various test container applications, meeting the demanding requirements of high-risk industrial environments.
TLS Offshore Containers / TLS Energy is a global supplier of standard and customised containerised solutions.
Wherever you are in the world, TLS can help you. Please contact us.
Keywords：#Centrifugal Fan,#Positive Pressure Test Container,#Negative Pressure Test Container,#Pressure Control System,#Industrial Ventilation,#Hazardous Environment Safety,#Laboratory Container Solutions,#Controlled Exhaust System,#Airtight Container Design,#Customized Test Containers
Written by Snowy
In offshore oil & gas, offshore wind, and other marine engineering projects, containers are not only transportation units but also critical equipment that must withstand lifting operations, deck handling, and long-term offshore service. Compared with standard ISO containers, offshore containers are subject to far more stringent structural, safety, and certification requirements.
Among these, DNV 2.7-1 and EN 12079 are the most widely recognized international and European standards for offshore containers.
As a professional manufacturer of offshore functional containers, TLS integrates these standards into the design, manufacturing, and testing stages to ensure safety, reliability, and full compliance in demanding offshore environments.
DNV 2.7-1 and EN 12079: Understanding the Relationship
DNV 2.7-1, issued by Det Norske Veritas (DNV), is a globally accepted certification standard for offshore containers. It defines requirements for structural strength, lifting safety, testing procedures, marking, and periodic inspection.
In practical offshore projects, containers certified to DNV 2.7-1 are generally recognized as meeting the core requirements of EN 12079, and are widely accepted by European owners, EPC contractors, and classification societies.
Designing for Compliance from the Start
TLS adopts DNV 2.7-1 design principles from the earliest project stage, rather than treating certification as a post-production step:
Design documentation prepared for review by classification societies or approved third-party inspectors
Testing and Verification
In accordance with DNV 2.7-1, TLS offshore containers undergo mandatory testing and inspection, including:
Upon successful completion, a DNV 2.7-1 certificate is issued by DNV or an approved inspection body, typically covering compliance with EN 12079-1 and EN 12079-2 as well.
Marking, Certification, and Traceability
Each TLS offshore container certified to DNV 2.7-1 is clearly marked with:
These markings ensure full traceability and regulatory compliance throughout global offshore operations.
A Compliance Advantage for Global and European Projects
With DNV 2.7-1 certification and EN 12079 compliance, TLS offshore containers:
Certification is not just a formality—it reflects TLS’s commitment to engineering safety, quality control, and long-term reliability in offshore environments.
Keywords:#DNV 2.7-1 offshore container, #EN 12079 container, #offshore container certification, #DNV certified container
Among these, DNV 2.7-1 and EN 12079 are the most widely recognized international and European standards for offshore containers.
As a professional manufacturer of offshore functional containers, TLS integrates these standards into the design, manufacturing, and testing stages to ensure safety, reliability, and full compliance in demanding offshore environments.
DNV 2.7-1 and EN 12079: Understanding the Relationship
DNV 2.7-1, issued by Det Norske Veritas (DNV), is a globally accepted certification standard for offshore containers. It defines requirements for structural strength, lifting safety, testing procedures, marking, and periodic inspection.
- EN 12079 is the European standard for offshore containers and lifting equipment, and its technical requirements are largely aligned with DNV 2.7-1:
- EN 12079-1: Design and manufacturing of offshore containers
- EN 12079-2: Lifting sets
In practical offshore projects, containers certified to DNV 2.7-1 are generally recognized as meeting the core requirements of EN 12079, and are widely accepted by European owners, EPC contractors, and classification societies.
Designing for Compliance from the Start
TLS adopts DNV 2.7-1 design principles from the earliest project stage, rather than treating certification as a post-production step:
- Structural design based on offshore lifting conditions, considering dynamic loads, eccentric loading, and impact forces
- Reinforced main load-bearing structures and optimized lifting point arrangements
- Use of compliant steel grades, qualified welding procedures, and offshore-grade corrosion protection systems
- Full structural verification for functional containers such as accommodation units, laboratories, and equipment modules, ensuring internal installations do not compromise structural integrity
Design documentation prepared for review by classification societies or approved third-party inspectors
Testing and Verification
In accordance with DNV 2.7-1, TLS offshore containers undergo mandatory testing and inspection, including:
- Lifting load tests to verify structural safety margins
- Detailed inspection of lifting points and critical structural areas
- Welding quality and manufacturing consistency checks
Upon successful completion, a DNV 2.7-1 certificate is issued by DNV or an approved inspection body, typically covering compliance with EN 12079-1 and EN 12079-2 as well.
Marking, Certification, and Traceability
Each TLS offshore container certified to DNV 2.7-1 is clearly marked with:
- Manufacturer details and a unique serial number
- Maximum Gross Weight (MGW) and tare weight
- Design temperature range
- Certificate number and applicable standards (DNV 2.7-1 / EN 12079)
These markings ensure full traceability and regulatory compliance throughout global offshore operations.
A Compliance Advantage for Global and European Projects
With DNV 2.7-1 certification and EN 12079 compliance, TLS offshore containers:
- Are widely accepted across global offshore projects
- Meet entry requirements for European offshore and energy markets
- Reduce compliance risks and accelerate project approval and delivery
Certification is not just a formality—it reflects TLS’s commitment to engineering safety, quality control, and long-term reliability in offshore environments.
Keywords:#DNV 2.7-1 offshore container, #EN 12079 container, #offshore container certification, #DNV certified container
