O2 Supply & Air Supply Systems

Oxygen Supply & Overpressure Maintenance Systems for Shelters, Safe Rooms and Chambers

In shelters designed for operation in complete isolation from external environment (lock up mode) for longer periods of time air regeneration systems must be installed to maintain the safe levels of Carbon Dioxide (CO2) and Oxygen(O2), as well as keep the overpressure (positive pressure) inside the shelter (pressurised shelter) which prevents from contaminated air entering the shelter.
The oxygen supply systems and overpressure maintenance systems together with the carbon dioxide removal system must be installed to work all together to maintain the required conditions for safe stay of the people inside the shelter or a chamber.
Lock up mode is usually used in shelters, strategic facilities and industrial applications where there is a risk of fires, floods, technogenic disasters with release of high concentration of toxic industrial chemicals (TIC) and CBRN materials and other emergency situations with no possibility to supply external air.
The systems we offer combine two critical life support features. A Positive Pressure Maintenance System (PPMS) to keep toxic and hazardous gases out, and a supplemental oxygen delivery system to maintain the air quality. Optional the systems can equipped with Gas Monitoring systems to alert the occupants regarding different gas levels.

Our Offer for Oxygen Supply and Overpressure Maintanance Systems

Oxygen Supply Systems for Shelters & Protected Spaces

An Oxygen Delivery Systems allow correctly maintaining the oxygen levels in the shelter or a sealed chamber.

The system is based on release of oxygen stored in special tanks. The release of the oxygen can be controlled manually by valve or equipped with sensors and automatic mechanism that continuously measures the internal oxygen level and disperses metered amounts of oxygen from a compressed oxygen cylinder, to maintain safe oxygen levels for breathing.

Shelter Positive Pressure (Overpressure) Maintenance Systems

Overpressure Maintenance System is a modular system which usually include several tanks (cylinders) with compressed air with controlled release into the shelter space (protected toxic free area) for creating / maintaining the positive pressure (overpressure) inside.

Overpressure Meter - Gauge

Overpressure meters / gauges are used to measure and present the relative positive pressure (overpressure) in the compartment.

The meters are devices for measuring and presenting the overpressure levels in the shelter or in different areas of the shelter. Overpressure gauges measuring the relative pressure between two areas and presenting the difference in pressure between them. This is required to ensure correct levels of overpressure, which helps to prevent the contaminated air from entering the shelter.

How is Oxygen Supplied to a Shelter

Supply of the oxygen in a sealed shelter or s chamber can be organized in two standard methods: compressed air and oxygen cylinders.

The most common breathable air sources within a refuge chamber are:

Incoming, filtered and regulated compressed air from an external source;
Oxygen cylinders;
Oxygen candle (Chemical Reaction).

Using Oxygen Cylinders in Isolated Environment

When external air supply source is not available, the shelter must have an independent source of oxygen. One of the options is to have a medical grade compressed oxygen from cylinders.
The Oxygen can be supplied directly from the O2 cylinders into the shelter. Compressed oxygen is released from a cylinder into the shelter through a regulator that controls the flow rate. Flow is set as for required rate of occupant consumption.