In high-risk industries such as oil & gas, chemical processing, and hydrogen electrolysis, the operating environment often contains flammable gases or vapors. This requires containers used in such areas to comply with strict explosion-proof standards.
As a provider of customized functional container solutions, TLS fully understands the differences between Zone 1 and Zone 2 hazardous areas and adapts container structure, materials, and systems accordingly.
1. Zone 1 vs Zone 2 – Risk Levels Define Design Requirements
2. Container Structure – From Sealing to Ventilation
Zone 1 applications require a redundant fan system (N+1) with a backup power supply to ensure system operation. The standby fan has a fast gas replacement start-up mode and incorporates gas leakage detection and automatic power-off to ensure a safe positive pressure environment is maintained at all times inside the enclosure.
For Zone 2, a single-fan configuration can be used with adjustable start/stop strategies based on on-site risk levels and operating cycles, optimizing cost-performance balance.
3. Electrical and Control System Explosion-Proof Strategies
4. External Interfaces and Explosion-Proof Penetrations
Every cable or pipe penetration is a potential leakage point—especially in high-risk Zone 1 areas—so safety measures must be implemented from the source:
5. Design Adaptation Process – Starting from Risk Assessment
TLS participates in the client’s risk assessment process from the very beginning. Based on the area classification drawings provided, we develop targeted explosion-proof designs to ensure every detail meets the relevant standards.
Upon delivery, TLS also provides complete design drawings, interface documentation, and explosion-proof compliance files for client review and record-keeping.
Conclusion – True Adaptation is Safety in the Details
Adapting to Zone 1 and Zone 2 requirements is not simply a matter of choosing different components—it requires a holistic approach to container structure, ventilation, electrical systems, and safety logic.
Through project-based design, component-level certification, and system-level validation, TLS ensures every explosion-proof container is not only compliant but also safe, reliable, and maintainable.
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.
Product brochures:
Offshore pressurised mud logging cabin brochure
MCC | Switchgear | VFD | VSD pressurised shelter
Keywords：#Explosion-Proof Containers,#Zone 1 Safety Design,#Zone 2 Hazardous Area,#Positive Pressure System,#N+1 Redundancy,#Gas Purge Strategy,#ATEX Certification,#IECEx Standards,#Hazardous Area Equipment,#Offshore Safety Solutions
As a provider of customized functional container solutions, TLS fully understands the differences between Zone 1 and Zone 2 hazardous areas and adapts container structure, materials, and systems accordingly.
1. Zone 1 vs Zone 2 – Risk Levels Define Design Requirements
- Zone 1: Areas where explosive gas atmospheres are likely to occur during normal operation.
- Zone 2: Areas where explosive gas atmospheres are unlikely during normal operation, and only occur for short periods under abnormal conditions.
2. Container Structure – From Sealing to Ventilation
- Positive Pressure Explosion-Proof System
Zone 1 applications require a redundant fan system (N+1) with a backup power supply to ensure system operation. The standby fan has a fast gas replacement start-up mode and incorporates gas leakage detection and automatic power-off to ensure a safe positive pressure environment is maintained at all times inside the enclosure.
For Zone 2, a single-fan configuration can be used with adjustable start/stop strategies based on on-site risk levels and operating cycles, optimizing cost-performance balance.
- Sealing and Material Treatment
3. Electrical and Control System Explosion-Proof Strategies
- Selection of Electrical Components
- Control Logic Differentiation
4. External Interfaces and Explosion-Proof Penetrations
Every cable or pipe penetration is a potential leakage point—especially in high-risk Zone 1 areas—so safety measures must be implemented from the source:
- Cable entries must use explosion-proof cable glands (e.g., EExe certified) with secure compression seals.
- Pipework should use flexible connections with explosion-proof fittings to avoid damage from vibration or tension.
- All interface positions and routing must avoid high-temperature or high-vibration zones, while leaving sufficient maintenance space.
5. Design Adaptation Process – Starting from Risk Assessment
TLS participates in the client’s risk assessment process from the very beginning. Based on the area classification drawings provided, we develop targeted explosion-proof designs to ensure every detail meets the relevant standards.
Upon delivery, TLS also provides complete design drawings, interface documentation, and explosion-proof compliance files for client review and record-keeping.
Conclusion – True Adaptation is Safety in the Details
Adapting to Zone 1 and Zone 2 requirements is not simply a matter of choosing different components—it requires a holistic approach to container structure, ventilation, electrical systems, and safety logic.
Through project-based design, component-level certification, and system-level validation, TLS ensures every explosion-proof container is not only compliant but also safe, reliable, and maintainable.
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.
Product brochures:
Offshore pressurised mud logging cabin brochure
MCC | Switchgear | VFD | VSD pressurised shelter
Keywords：#Explosion-Proof Containers,#Zone 1 Safety Design,#Zone 2 Hazardous Area,#Positive Pressure System,#N+1 Redundancy,#Gas Purge Strategy,#ATEX Certification,#IECEx Standards,#Hazardous Area Equipment,#Offshore Safety Solutions
