Carbon dioxide flooding systems
Total-flood and local-application CO₂ for enclosed plant where water would do the damage the fire did not. Design, supply, installation, testing and commissioning.
- Scope
- Survey → commissioning → AMC
- Practice
- IS 6382 · NBC 2016 Pt.4
- Typical use
- Switch rooms, generator rooms
It removes the oxygen, which is why the room has to be empty
Carbon dioxide puts a fire out by displacing the oxygen it needs. That works on energised electrical equipment and on flammable liquids, and it leaves nothing behind to clean up — but at the concentration required it will not sustain a person, so a CO₂ system is for spaces that are normally unoccupied and it is designed around getting people out first.
The quantity comes from the volume of the enclosure and how well that enclosure holds gas. Openings, cable entries and ventilation ducts all have to be closed or accounted for, because a room that leaks will not hold concentration long enough to be sure the fire is out. Where the risk is a machine rather than a room — a press, a dip tank, a turbine — a local-application design puts the gas on the object instead of filling the space.
Commissioning is where these systems are made safe rather than just installed. We prove the detection and release sequence, the pre-discharge alarm and its delay, the abort and manual release, the damper and fan shutdown interlocks, and the door signage and lock-off arrangement — then hand over the discharge calculation and the operating instructions the room needs posted at its entrance.
What the installation is built from
A CO₂ installation is a cylinder bank, a distribution network and a releasing sequence that protects the people before it protects the plant.
Tell us about the project
Send the drawings or the BOQ and we will price it line by line. Most enquiries start with a site visit, because the site decides the system — not the catalogue.