Saudi-American Modern Systems

1. Concept -oxygen reduction principle:

By adding nitrogen-enriched air to the atmosphere the mixing ratio of oxygen versus nitrogen is changed and a fire cannot start

O.R.S (Oxygen Reduction System)
N2 OXYGEN REDUCTION SYSTEM® methodology

The N2 ORS® methodology prevents the development or spreading of open fires by adding nitrogen to the atmosphere.

2. How to generate an oxygen-reduced atmosphere
An ecological solutio

ISOLCELL provides three different technologies for nitrogen production

All of our nitrogen-producing technologies are GREEN systems in the truest sense. We do not use any chemicals or add any other additives but use the surrounding air only.

PSA NIMOS (Pressure Swing Adsorption) technology

PSA systems are operated with a pressure of 6 to 10 bar (g).
The air-separating media used is CMS (Carbon Molecular Sieve).

In addition to high-pressure compressors, with the PSA technology, compressed air filtration systems, dryers, steam traps, oil separators, etc. are needed to guarantee smooth and reliable nitrogen production.

The PSA NIMOS systems have been designed to protect medium to large-size facilities. Already existing compressors on site can be utilized if pressure and air quality prove to be suitable for nitrogen production and also meet our high standards.

PSA NIMOS (Pressure Swing Adsorption) technology

Adsorption process with carbon molecular sieve Operating pressure: approx. 6-10 bar

1. Compressor
2. Water separator
3. Air tank
4. Electronic condensate discharge
5. Pre-filter
6. Air dryer
7. Fine filter
8. Microfilter
9. Activated carbon filter 10.PSA Nitrogen generator 11.Process tank 12.Nitrogen buffer
13. Dust filter 14.Condensate separator

A flow of compressed air, dried and filtered, supplies the first tank,

containing the molecular sieve. In the adsorption process, the CMS will be saturated with oxygen and the nitrogen passes by.

While the first tank will be depressurized, the second tank will be supplied with air and the process starts again.

This cycle is continuously repeated, thus obtaining a constant and continuous supply

MEMBRANE technology

For protecting small and very small facilities ISOSEP systems are the perfect choice. As for the small amounts of nitrogen required the economical advantages of dividing the air by CMS are not given, and a filtering process by hollow fiber membrane technology comes into use.

The ISOSEP series equipment is particularly suitable for protecting small rooms, and thanks to its ergonomic design it can easily be installed inside the protected area.

MEMBRANE technology

Filtering the nitrogen using a hollow fiber membrane Operating pressure: approx. 7,5 – 13 bar

See figure below

ADOX® (Vacuum Pressure Swing Adsorption) technology

ISOLCELL utilized its incomparable experience in the field of generated and controlled atmospheres to develop the patented ADOX® series, designed to extremely limit operating costs (energy consumption, maintenance) and to raise the bar to the highest level in the category of self-standing nitrogen production equipment.

With the ADOX VPSA low-pressure technology operating with a maximum pressure of 1.4 bar (g) it was possible to eliminate high-pressure compressors, thus significantly reducing energy and maintenance costs.

The ADOX® series is particularly suitable for protecting medium and large premises, optimizing operating costs by up to 60% compared to "traditional" nitrogen production technologies, and nevertheless offering equivalent or even higher yields.

Soundproofing of the new ADOX® N2 ORS
Line
High Sound Performance optimization

The new upgraded ADOX N2 ORS has been designed

to reduce drastically the noise level.

ONLY < 64 DB certified according to ISO 3744:2010

This amazing result has been achieved thanks to an accurate design,

planning, and selection of the best components and high-performance soundproof cabinets.

Technology comparison, investment vs operating costs:

( Isolcell )a real sense of security

Is the first system that prevents a risk of fire!
The traditional technologies used in fire-fighting, such as foam, water-mist, sprinklers, etc., intervene when the fire is already under way and during extinction and cause serious consequences on the properties and the environments involved. The damage caused by traditional techniques during the phase of extinguishing is very

often of the order of magnitude or even higher than the damage caused by the fire itself. Furthermore, there is a whole class of environments, such as cold rooms, paper mills, the transformer cabins, shelters, but also others,
where these techniques, besides not being optimal, are of difficult/costly
application.
( Isolcell ) aims to offer an optimal solution and a low impact to ensure the security
of all of these classes of environments.
“Today eliminating the fire hazard and safeguarding the content and environments is possible thanks to oxygen depletion” Through technology ( Isolcell )

Room integrity & testing:

The objective is to save energy long-term, prevent structural damage, and continuously maintain a fire-safe protection level when an Oxygen Reduction System is in use.

The room integrity value is stated in the N50 value. It can be defined as the resistance to inward or outward air leakage through unintentional leakage points or areas in the building envelope
With the blower door test, the air tightness of a building is measured. The leaks in the building are determined

by leakage detection and can be corrected by the client later. New buildings should be erected with the required

room integrity value already in mind. The blower door test is the standard method for testing the air-tightness of a building.

The integrity value (N50) is determined by exposing the area to 50 pas over and 50 pa under pressure.

The blower door test is no longer performed only in the new dwellings but also includes large buildings such as

warehouses, office buildings, cold stores, archives, gyms, or consumer markets to the standard of a construction

project.

Objective:

Room integrity:

The number of air-exchanges (N50 value) determines largely the required amount of nitrogen when the fire prevention method of Oxygen Reduction is envisaged.
Therefore a low N50 value should be aimed at as this:

reduces the investments
reduces the energy consumption & subsequently costs
reduces the ORS plant dimensions
keeps running costs low
reduces running time of the ORS equipment
extends lifetime of the machinery

Requirements:

To support the Oxygen Reduction System to work as effectively as possible the following requirements for the building should be followed :
● low integrity value should be achieved
● closed-circuit air conditioning system
● no unwanted fresh air intake
● sealed walls and floors
● sealed cable and pipe breakthroughs
● Gas-tight doors and windows
● sealed air ducts crossing the protected area
● airlocks, fast-acting shutter doors

Recommendations:

Wall insulation:

A wall in an existing building can be air-tightly insulated by different means, one method could be to seal the wall by applying sheets of plasterboard. Once the gaps have been grouted the wall will be airtight.
However, in many cases a coat of paint is sufficient. For this purpose, ISOLCELL has developed “ISOLCOAT” a special coating.

ISOLCOAT is a nontoxic and waterproof resin used as an internal coating for achieving gas tightness.

Due to its resilience, ISOLCOAT gives excellent results. It is the most popular gas-sealing product in this field.

ISOLCOAT can be applied to masonry walls, polystyrene, or sandwich insulation panels.

Recommendations:

Door tightness:

In many buildings even doors with a circumventing rubber seal provide a gap on the floor which represents an unwanted leakage. To remove this leakage the installation of a simple door sill fitted with a cellular rubber facing the door leaf provides a perfect solution.

Airtight power socket:

In newer buildings very often the electrical installation is done by fitting cables through conduits. In those cases the power socket represents an unwanted leakage. To remove this leakage the installation of airtight power sockets is recommended.