​In industrial environments, safety is paramount, especially when dealing with hazardous materials or explosive atmospheres. That's where a Combined Pressurization Fire & Gas (CPFG) system comes in. More than just a safety device, it's an intelligent guardian for your positive pressure containers, ensuring a safe and compliant operational space.

How Does a CPFG System Work Its Magic?
At its core, a CPFG system is designed to create and maintain a positive pressure environment within an enclosure. Think of it like a protective bubble that keeps dangerous gases out. Here's a breakdown of its sophisticated process:

The Brains and Brawn: Integrated Components
A CPFG system isn't just one piece of equipment; it's a suite of interconnected, smart devices working in harmony. These typically include:
  • Gas and Smoke Detectors: The frontline sensors, constantly sniffing out any hazardous gases or smoke that might indicate a problem.
  • Heat Detectors and Fire Alarms: Essential for early detection of potential fires, triggering immediate alerts.
  • Pressure and Flow Switches: Monitoring the crucial positive pressure within the container, ensuring it remains at safe levels.
  • Booster Fans: The workhorses that purge the enclosure and maintain that vital positive pressure.
  • Emergency Stop & Alarm Mute Switches: Providing manual overrides for immediate intervention when needed.
  • Explosion Protection Equipment: Additional safeguards to mitigate risks in hazardous areas.

Powering Up and Purging for Safety
When you switch on a CPFG system, the first thing it does is activate the booster fan. This fan rapidly purges the container's interior, filling it with clean air and establishing a positive pressure. This is a critical step, as it physically prevents dangerous gases from entering the enclosure from the outside.

The Green Light: Activating Internal Equipment
Once the CPFG system's detectors confirm that the internal environment is completely safe – meaning no hazardous gases are present and the positive pressure is stable – it then gives the go-ahead for the power distribution board (DB) to activate. This is your cue that it's safe to use the non-explosive electrical equipment inside the container, such as computers, sockets, or water heaters.

Constant Vigilance: Monitoring During Operation
The CPFG system doesn't stop working once your equipment is running. It continuously monitors the environment for any changes.
  • Immediate Alerts: If gas detectors pick up dangerous fumes or pressure switches indicate a loss of positive pressure, the system's alarms will blare, issuing immediate warnings.
  • Automatic Shutdown for Ultimate Protection: In a critical scenario, if the safe conditions within the container aren't restored within a set timeframe after an alarm, the CPFG system automatically shuts off all non-explosive devices. This intelligent fail-safe ensures that potential ignition sources are immediately de-energized, making the general equipment inside the container compliant with blast protection protocols.

Why is a CPFG System Essential for Your Business?
Implementing a CPFG system isn't just about compliance; it's about safeguarding lives, protecting valuable assets, and ensuring uninterrupted operations in challenging environments. By actively managing the internal atmosphere of your enclosures, a CPFG system offers unparalleled safety and peace of mind.

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.
 
Product brochures:
Offshore pressurised mud logging cabin brochure
MCC | Switchgear | VFD | VSD pressurised shelter
 
 
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Written by Oliver

In high-risk industries such as energy, chemicals, energy storage, and intelligent manufacturing, pressurized explosion-proof containers are widely used to house critical equipment like electrical control systems, lithium batteries, and sensor modules.

One common question from clients is:
“If a device or battery inside the container catches fire or explodes, will flames or sparks leak into the external environment and cause greater danger?”

As a specialized manufacturer of functional explosion-proof containers, TLS addresses this concern from four key safety design perspectives:

1. Sealed & Reinforced Structure: First Line of Defense
TLS pressurized containers are built using weather-resistant steel and high-performance sealing components, including explosion-proof locks, cable glands, and dual-seal strips. Together, they form a highly airtight and pressure-resistant enclosure.

Even if internal equipment ignites or experiences a short-term deflagration, the structure effectively contains flames, sparks, and high-temperature gases, protecting the external environment.

All TLS pressurized containers are designed and manufactured in accordance with relevant explosion-proof standards (such as IEC 60079-13), meeting or exceeding industry-grade anti-explosion performance.

2. Pressurization System: Blocking External Gases and Monitoring Abnormalities
The core function of the pressurization system is to maintain internal pressure above ambient pressure, preventing flammable gases from entering and forming explosive mixtures with internal components.
TLS pressurization systems are equipped with:
  • Pressure sensors and differential pressure alarms
  • Combustible gas detection instruments
  • Automated ventilation and power-off linkage

When anomalies occur (e.g. fire, pressure drop, gas concentration exceeding threshold), the system will immediately trigger alarms and initiate emergency measures like power shutdown or Close fire dampers—intervening before the situation escalates.

3. Explosion-Proof Electrical Selection: Controlling Hazards at the Source
Typical electrical components inside a TLS pressurized container include:
  • Lithium battery systems
  • DC/AC converters and inverters
  • PLC or DCS control cabinets

Based on the risk level, TLS applies suitable explosion-proof strategies:
  • Intrinsic safety (Ex i) for low-power control devices
  • Flameproof (Ex d) or increased safety (Ex e) enclosures for high-power units
  • Fireproof partitions or isolation chambers for lithium batteries and other sensitive modules

This “hazard-source control” approach greatly reduces fire or explosion risks at the component level.

4. On the explosion relief device: why we choose "prevention-oriented"

It is worth noting that: explosion relief device is not a standard feature of the positive pressure explosion-proof box (TLS is generally not equipped), in the structure of the double security of airtight and positive pressure system, the risk of flame or spark leakage to the outside has been effectively controlled.Avoiding the reactive approach of "after-the-fact reliance".

For extreme applications, such as high-capacity battery testing, high-pressure chemical reaction experiments, etc., TLS can also be customised to incorporate additional safety modules, such as directional exhaust systems or automatic fire extinguishers, to cope with the specific extreme conditions, if the customer requires a very high level of individual protection.However, this is not a standard feature.

5.Conclusion: A Systematic and Reliable Line of Safety Defense
Facing the complex risks of flammable and explosive environments, TLS’s pressurized explosion-proof containers are designed with a system-level safety philosophy—combining sealed structure, intelligent pressure control, electrical explosion protection, and optional emergency systems to deliver safe, reliable, and sustainable containerized environments.

At TLS, containers are not just equipment enclosures—they are your first line of safety.

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.  

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Written by Snowy

​In today's expanding industries, safely transporting goods and equipment is paramount. When it comes to high-risk environments like offshore and marine operations, A60 fire-rated containers are no longer just an option – they're a necessity. But what exactly makes them so vital?

Understanding the A60 Fire Rating
An A60 fire rating isn't just a number; it's a critical safety classification. It means a container can withstand extreme temperatures, up to 1,000 degrees Celsius, for a full 60 minutes. This capability is especially important in settings where flammable materials and gases are present, significantly reducing the risk of fire-related disasters.

Key Advantages of A60 Fire-Rated Containers
Choosing an A60-rated container offers a multitude of benefits, making them an indispensable asset:
  • Superior Protection: These containers provide robust protection against fire, safeguarding valuable equipment and preventing the devastating loss of goods.
  • Enhanced Safety: Beyond assets, A60 containers are designed to protect personnel and the environment. They play a crucial role in containing fires and preventing them from spreading to nearby structures or equipment.
  • Regulatory Compliance: Many industry regulations and standards, particularly for offshore and marine applications, mandate the use of A60 fire-rated containers. Opting for these ensures your operations meet essential safety requirements.
  • Exceptional Durability: Built to endure extreme conditions, A60 containers are inherently durable and reliable, ensuring long-term performance even in the harshest environments.

Where You'll Find A60 Containers in Action
A60 containers are most commonly deployed in demanding sectors such as:
  • Offshore and Marine: Think oil and gas platforms, drilling rigs, and other maritime vessels where fire hazards are a constant concern.
  • Military Applications: For sensitive equipment and critical operations requiring the highest level of fire protection.
  • Industrial Uses: Any industry dealing with highly flammable materials or processes can benefit from the enhanced safety offered by A60 containers.
Beyond their inherent fire resistance, these containers can also be fully customized. They can be equipped with HVAC systems, lighting, and specialized electrical systems to meet the unique needs of diverse industries.

Invest in Safety: Choose A60 Fire-Rated Containers
For businesses that prioritize safety and reliability in the transport of goods and equipment, especially in high-risk sectors, selecting an A60 fire-rated container is a smart and responsible decision. They offer unparalleled fire protection, safeguard personnel and assets, and ensure compliance with critical industry standards.

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: #A60 fire rated, #Fireproof container for marine use, #DNV 2.7-1, #oil & gas, #Offshore equipment, #Hazardous material storage offshore,  #Container fire resistance rating, #Safety containers for drilling rigs, #Industrial fire safety containers, #Customizable A60 rated modules

Written by Oliver