Low Level Ventilation for Liquid Nitrogen Storage Areas
Protecting Personnel from Oxygen Depletion Risks.
Liquid nitrogen (LN₂) is widely used
Particularly across laboratories, healthcare facilities, research centres, manufacturing plants, food processing facilities and industrial applications.
While liquid nitrogen is non-toxic and non-flammable, it presents a significant asphyxiation hazard if released into an enclosed space.
We design and install low level ventilation systems
Specifically engineered to protect personnel from oxygen depletion caused by liquid nitrogen leaks, spills or venting events.
Our solutions help maintain a safe working environment while supporting compliance with workplace safety requirements and industry best practices.
Why is Low Level Ventilation
Required?
When liquid nitrogen evaporates, it expands rapidly into nitrogen gas.
This gas displaces oxygen in the surrounding atmosphere, creating an Oxygen Deficiency Hazard (ODH).
As the extremely cold nitrogen gas is initially denser than ambient air, it can accumulate at low levels within a room, pit, plant area, or enclosed space before dispersing.
Without adequate ventilation, oxygen levels can fall below safe limits without warning.
Potential consequences include:
Dizziness and disorientation
Loss of consciousness
Serious injury or fatality
Emergency evacuation of the facility
Regulatory non-compliance
How Low Level Ventilation Protects
Your Facility
Low level extraction systems are designed to remove accumulated nitrogen gas from floor level and prevent dangerous oxygen depletion.
By continuously or automatically ventilating low-lying areas, these systems help maintain safe oxygen concentrations and reduce the risk of hazardous atmospheres developing.
Our ventilation systems can operate independently or be integrated with our oxygen monitoring systems for enhanced protection.
Key Benefits
Improved personnel safety
Reduced oxygen depletion risk
Automatic response to hazardous conditions
Continuous air movement and dilution
Compliance with safety assessments and risk management procedures
Integration with oxygen deficiency monitoring systems
Integrated Oxygen Monitoring & Ventilation Control
For maximum protection, we recommend combining low level ventilation with our fixed oxygen monitoring systems.
Our integrated solutions continuously monitor oxygen concentrations and automatically activate ventilation systems when oxygen levels begin to fall.
Features include:
Fixed oxygen deficiency monitors
Audible and visual alarm systems
Automatic fan activation
Remote alarm notifications
Building management system integration
Event logging and reporting
This approach provides both early warning and automatic mitigation, helping protect personnel and critical operations
Applications
Our low-level ventilation systems are suitable for a wide range of environments where liquid nitrogen is stored, handled or used.
Common applications:
Cryogenic Storage Rooms
Laboratory Facilities
Research Institutions
IVF & Fertility Clinics
Medical Facilities
Pharmaceutical Manufacturing
Food Processing Plants
Industrial Gas Storage Areas
Universities & Research Centres
Manufacturing Facilities
Tailored Ventilation Solutions
Every facility presents unique risks and operational requirements.
Our engineers conduct site surveys to determine:
Room dimensions and layout
Liquid nitrogen storage volumes
Ventilation requirements
Oxygen deficiency risks
Occupancy levels
Existing ventilation systems
Compliance requirements and full calculations
Using this information, we design a solution tailored specifically to your environment.
Complete Design, Installation & Maintenance
We provide a complete service from initial consultation through to installation, commissioning, testing and ongoing maintenance.
Our services include:
Site Surveys & Risk Assessment Support
Identifying potential oxygen depletion hazards and ventilation requirements
Ventilation System Design
Custom low level extraction systems designed for your facility
Installation & Commissioning
Professional installation by experienced engineers
Linking ventilation systems with oxygen deficiency detection and alarm systems
Maintenance & Testing
Routine inspections and servicing to ensure long-term performance and reliability
Protect your Staff and Facility
If your site stores or uses liquid nitrogen, effective ventilation and oxygen monitoring are essential for maintaining a safe working environment.
Speak with our team today to arrange a site survey and discuss a tailored low level ventilation solution for your facility.
Why Choose Britannia Monitoring Systems?
Specialist Ventilation Design
We design low-level extraction systems for environments where liquid nitrogen, carbon dioxide and other gases may create hazardous atmospheric conditions.
Integrated Gas Detection
Our ventilation solutions can be integrated with fixed gas detection systems to provide automatic extraction, audible and visual alarms and additional safety controls.
Complete Installation Service
Our experienced engineers provide installation, commissioning and testing of ventilation and gas detection systems throughout the UK.
Tailored Safety Solutions
Every installation is assessed individually, taking into consideration room dimensions, gas storage volumes, potential release scenarios, ventilation requirements and operational risks.
Ongoing Maintenance & Support
Britannia provides routine inspection, testing and maintenance services to help ensure ventilation and associated monitoring systems continue to operate reliably.