FIRE PREVENTION
Nitrogen Oxygen Reduction Systems (N₂ ORS®)
Most fire systems wait for flames and smoke.
N₂ ORS® prevents ignition in the first place.
The system continuously maintains an oxygen-reduced atmosphere in protected areas so that a fire cannot start; while remaining safe and comfortable for people working inside.
Prevent fires before
they start.
The N₂ ORS® system avoids the damage created by a fire and by traditional fire suppression systems.
24/7 Protection
The reduced oxygen environment generated makes it impossible for a fire to start in the first place.
Unparalleled Safety
& Reliability
Isolcell S.p.A has been part of the work group for the establishment of the world regulations (ISO 20338:2019) for the oxygen reduction fire prevention as well as of the European standard (EN 16750:2017)
See N₂ ORS® in action
This short video from Isolcell shows how N₂ ORS keeps oxygen levels below the ignition threshold in real installations around the world.
Why Partner with Gas At Site
Your Southern African partner for N₂ ORS®
Gas At Site has been working with industrial gases and controlled atmosphere solutions since 1990. We integrate Isolcell’s N₂ ORS technology with our on-site nitrogen generation expertise and deep knowledge of cold storage and process environments in Southern Africa.
What we bring to your project:
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System design & integration tailored to your building, process and risk profile
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On-site nitrogen generation solutions for cost-effective long-term operation
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Commissioning & training for your engineering, safety and operations teams
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Service agreements & preventative maintenance with to keep your N₂ ORS running reliably season after season.
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Coordination with consultants, insurers and authorities to align with standards and approval processes
Applications for N₂ ORS
The N₂ Oxygen Reduction System® is highly reliable, flexible, scalable and suitable for:
Archiving
Paper records, film and data archives, museums, libraries, hospital storage, vaults and treasuries. N₂ ORS protects irreplaceable assets without exposing them to water damage or chemical residues.
Automated Warehouses
Automated intensive warehouses, ASRS systems and high-bay storage facilities where fire brigade access is difficult and stocked goods are high value. Oxygen-reduction removes the ignition risk in hard-to-reach areas.
IT Data Centres
Data centres, server rooms, switch rooms and substations where even a small fire can cause extensive downtime and reputational damage. N₂ ORS works alongside early-warning smoke detection to prevent ignition around critical equipment.
Cold Stores
Cold stores, freezer warehouses, refrigerated distribution centres and food warehouses. Oxygen-reduction is especially suited to temperature-controlled environments, where traditional suppression can be less effective and ice accumulation is a concern.
Substations
Continuous fire prevention for transformers, switchgear and cable galleries, without water or foam damage.
Paper Mills
Paper mills and storage of combustible or hazardous materials where fire spread is rapid and water-based suppression can cause contamination or product loss.