Why is freon 125 so expensive? Effective use of gas fire extinguishing with freons. effectively provides volumetric fire extinguishing

Freon-125 (R125, pentafluoroethane, chemical formula - C2F5H)

Application

Freon-125 is the most affordable and widespread freon in the field of fire extinguishing in Russia, the only fire extinguishing freon produced in large quantities by the domestic industry. Freon-125 is a pure product that is not subject to restrictions by environmental standards of the international community in the field of fire extinguishing. Approved for long-term use. When used, it is safe for humans under certain conditions.

Technical indicators

Characteristic

Freon-125 is a colorless gas, liquefied under pressure; non-flammable and low-toxic, ozone-safe.

Package

Special containers of 720 kg, 810 kg; 40 kg cylinders.

Transportation and storage

Freon-125 is transported by all types of transport in accordance with the rules for the transportation of dangerous goods. Store in warehouses in accordance with the Rules for the Design and Safe Operation of Pressure Vessels.

We provide free hydraulic calculations and full calculations of the gas fire extinguishing system. Refilling of gas fire extinguishing modules (GFA) is also carried out at the company's expense; the client pays only the cost of the refrigerant.

The FlameStop group of companies is the first and only production in Russia that manufactures and supplies all elements and components of gas fire extinguishing equipment. All equipment is certified and produced entirely on the territory of the Russian Federation from Russian raw materials, which allows us to set the best prices that do not depend on the exchange rate of the dollar and euro.

Automatic gas fire extinguishing systems with fire extinguishing agent Freon

Freon- a light gas, colorless and odorless. The most common gases used in gas fire extinguishing systems at present are freons 125 and 227ea.

Peculiarities:

Does not conduct electricity;
Does not cause corrosion;
Do not cause damage to property or material assets;
Extinguishes smoldering materials;
Can be used for extinguishing the general volume of premises and spot extinguishing equipment located in a common room;
Freons have a relatively low storage pressure, making them easy to transport and store;
Used to extinguish class A, B, C, E fires;
Refrigerants are non-toxic, chemically inert, and when heated and in contact with burning surfaces, they do not disintegrate into toxic and aggressive fractions;
After the end of extinguishing, they can be easily removed from the room by simple ventilation.

Advantages:

Does not harm electrical equipment
Effectively suppresses fire with minimal gas concentration in the air.
Economical to use.
Instantly transforms into a gaseous state, even at negative ambient temperatures, which allows you to achieve the required concentration in a matter of seconds.
Economical price is from 3 to 1.5 times cheaper than analogues.
Made in Russia
Has a high fire extinguishing speed.

Gas fire extinguishing composition Freon 125HP

Gas fire extinguishing agent Freon 125ХП is a chemical flame retardant. The mechanism of fire extinguishing with freons consists mainly in the effect of this gaseous fire extinguishing agent on breaking the radical bonds of the physico-chemical chain reaction of combustion, in suppressing the “active centers” of this reaction and creating a non-flammable environment in the protected volume.

Gas fire extinguishing composition Freon 125ХП is environmentally friendly and does not affect the ozone layer, interior items, electrical equipment and material assets. Filling factor 0.9kg/l.

In addition, Freon 125ХП has maximum thermal stability compared to other refrigerants; the thermal decomposition temperature of its molecules is more than 900°C. The high thermal stability of Freon-125HP allows it to be used to extinguish fires of smoldering materials, because at the smoldering temperature (usually about 450°C) thermal decomposition practically does not occur.

Freon 125HP (Pentafluoroethane, C2F5H, Halon 25, FE-25, R125, HFC-125) can be used to extinguish:

Electrical equipment fires;

Fires of flammable liquids and gases (equipment rooms and pump rooms);

Fires in premises where expensive devices and equipment are concentrated (CED, operating rooms, etc.);

Fires in valuable storage areas.

Gas fire extinguishing composition Freon 227EA

HFC-227ea is a fire extinguishing agent from the freon class. It is most widely used in world practice to protect objects where the safety of material assets is of paramount importance. HFC-227ea is a colorless, tasteless and odorless gas. It is registered in NFPA 2001 and ISO 14520 as HFC-227ea and is sold under the brand names FM 200, Solkaflam 227, Novalon, etc. Chemically, HFC-227ea is heptafluoropropane and has the chemical formula CF3CHFCF3.

In the cylinder, HFC-227ea is in a liquefied state. When leaving the cylinder, HFC-227ea evaporates, reducing the ambient temperature, as for all gases of the freon class, the decrease in temperature is one of the fire extinguishing factors for HFC-227ea. Another factor is chemical inhibition of the combustion reaction.

The undoubted advantage of HFC-227ea is its chemical inertness. It does not conduct electricity, does not cause corrosion of metals and destruction of organic compounds, which allows it to be classified as a group of so-called “pure gases”.

HFC-227ea has regulatory fire extinguishing concentrations of about 7.5%, which is lower than its NOAEL rating (9%). This means that when used as a fire extinguishing agent, it is safe for humans. HFC-227ea is 1.4 times heavier than water, so its maximum filling factor is 1.15 kg/l, which allows the number of cylinders in a fire extinguishing system using it to be reduced to a minimum.

Physico-chemical data of HFC-227ea:

Molecular weight 170 a.u.
Boiling point at a pressure of 1 bar - 16.4 ° C
Liquid density at a temperature of 25 °C - 1407 kg/m3
Gas density at a pressure of 1 bar and a temperature of 20 ° C - 7.28 kgm3
Saturated vapor pressure at 25 °C - 3.91 bar
Fire extinguishing concentration for class B fire 7.2 vol.%
NOAEL- 9/%.

Toxicity level NOAEL - No Observed Adverse Effect Level - the highest concentration of GFFS at which no harmful psychological or toxicological effect on humans is observed.

HFC-227ea has an ozone depletion potential of zero and a global warming potential of 3500.

Application:

Suitable for areas where personnel work
Release time: 10 seconds
After a fire there is no need to clean up residues
Widely used as a substitute for Halon 1301
Zero chance of ozone depletion
Suitable for storage in welded pressure cylinders, saving space and money
Does not conduct electricity
Complies with ISO 14520 and NFPA 2001 standards

Gas fire extinguishing modules

The modules are designed for long-term storage and emergency release of gaseous fire extinguishing agent (GFA) into the protected room when extinguishing a fire using a volumetric or local-volume method. They are used as part of automatic gas fire extinguishing installations of modular or centralized type. Used to extinguish class A, B, C fires and live electrical equipment. They are located in protected premises or outside protected premises, in close proximity to them. The number of modules in a group is from 2 to 12.

An example of an automatic gas fire extinguishing installation

FlameStop Group of Companies provides full-cycle services for equipping facilities with gas fire extinguishing systems. Our team is highly qualified professionals who have many years of experience in the production and supply of fire extinguishing equipment. Our employees will assist you in the design of fire extinguishing systems, calculate the necessary equipment and transfer the order to the warehouse or production. The logistics department organizes prompt delivery of equipment to any point in Russia and the CIS countries. The installation and service department will carry out installation of any complexity in the shortest possible time.

Holding OSK group- a Russian manufacturer of gas fire extinguishing systems offers equipment certified in the Russian Federation for effective and safe fire extinguishing, carries out design, installation, commissioning, and maintenance of gas fire extinguishing systems.

It is very popular due to the relatively low cost of the halon fire extinguishing system, and also, due to the special properties of halon (inhibiting the chemical reaction of combustion), the amount of fire extinguishing agent for extinguishing a fire is minimal.

Freon stored in fire extinguishing modules in liquefied form under nitrogen pressure (propellant gas).

The use of freons in gas fire extinguishing systems is considered safe provided that fire safety requirements at the protected facility are met. Fire extinguishing concentrations for freons are an order of magnitude lower than dangerous and even lethal concentrations for exposure durations of up to 4 hours. Approximately five percent (5%) of the freon mass undergoes thermal decomposition; as a result, the toxicity of the environment during gas fire extinguishing with freon will be significantly less than the toxicity of the products of pyrolysis and decomposition.

Gas fire extinguishing Freon is used

In specialized premises, in which the installation of another fire protection option is fraught with serious material losses and loss of important information, the use of freon gas fire extinguishing effective and safe,
For example:
- in premises for storing cultural property,
- in rooms for placing technological equipment,
- in rooms with live equipment,
- in electrical switchboard, diesel, generator rooms,
- in rooms with explosive atmosphere,
- in rooms with computer and electronic equipment, etc.

Gas fire extinguishing Freon provides

- timely fire detection fire alarm, which is part of an automatic gas fire extinguishing installation

- Possibility of delayed delivery gas fire extinguishing agent for the time necessary to evacuate people from the protected premises

- creation of fire extinguishing concentration gas extinguishing agent in the protected volume or above the surface of the burning material during the time required to extinguish the fire

For gas fire extinguishing Freon, the most popular fire extinguishing compounds are GOTV Freon 125, Freon 227ea(HFC-227ea, FM-200).

Freon 125 It is classified as ozone-safe, has maximum thermal stability compared to other refrigerants, the thermal decomposition temperature of its molecules is more than 900° C. The high thermal stability of refrigerant 125 allows it to be used for extinguishing fires of smoldering materials, because at smoldering temperature (usually about 450°C) thermal decomposition practically does not occur.

Freon 227ea (HFC-227ea, FM-200)

Freon-227ea is one of the most used agents in the global gas fire extinguishing industry, also known under the brand name FM200. Used to extinguish fires in the presence of people. An environmentally friendly product with no restrictions on long-term use. It has more effective extinguishing performance and higher industrial production costs. Under normal conditions, it has a lower (compared to Freon 125) boiling point and saturated vapor pressure, which increases safety in use and transportation costs.

Gas fire extinguishing Freon is effective

It is an effective means for extinguishing indoor fires, because gas penetrates instantly into the most inaccessible places and fills the entire volume of the room. The consequences of activating the Freon gas fire extinguishing installation are easily eliminated after smoke removal and ventilation.

Gas fire extinguishing Freon is safe

The safety of people during gas fire extinguishing Refrigerant is determined in accordance with the requirements of regulatory documents NPB 88, GOST R 50969, GOST 12.3.046 and is ensured by the preliminary evacuation of people before the supply of fire extinguishing gas according to siren signals during the designated time delay. The minimum duration of the time delay for evacuation is determined by NPB 88 and is 10 s.

Among fire-fighting installations, gas fire extinguishing with freons takes its rightful place. In the vast expanses of the CIS the name freon has taken root, and in the west the name freon has taken root. The long history of the use of these substances, since the thirties of the last century, has proven in practice their reliability and effectiveness. Of the ten gases permitted in Russia as , five are freons 23, 227EA, 125, 218, 318C. The remaining gases that are not included in the list of Code of Rules 5.13130.2009 “Fire alarm installations...” must be approved for compliance with technical conditions and a specific project.

Application area

Fighting fire with water often proved futile or dangerous. Instead of water, carbon dioxide was first used, then, with the creation of freon-type fire extinguishing agents, gas fire extinguishing installations with freons began to be used.

Freons are used for volumetric and surface extinguishing and preventing the formation of an explosive atmosphere. With the help of station installations, closed spaces are protected, and small fires are protected with fire extinguishers.

Refrigerants for fire extinguishing are used in explosive areas, warehouses of fuels and lubricants, etc., as flame arresters. Their main advantage lies in their gentle effect on material assets exposed to fire. They are used in server rooms, data centers, aircraft and ships, archives, generator and transformer substations. Some run in the presence of people, allowing them to be used in museums, galleries, libraries and other public places. But the duration of a person’s stay in the zone of action of these gases is limited to several minutes, depending on the concentration of the substance. The freon fire extinguishing system is used in conjunction with access control and control. The access control system determines the presence of personnel and gives exit commands indicating the evacuation route, followed by blocking of doors, natural and forced ventilation systems.

Advantages and disadvantages

Freons are used in fire extinguishing agents to slow down and subsequently extinguish the flame. They became widespread due to their properties. Freons are dielectrics, which allows their use to fight fire in rooms with electrical equipment under electric current. Due to their high density in liquid and gaseous form, they penetrate into the fire and act as a phlegmatizer and fire inhibitor.

At concentrations of 10% they effectively extinguish the flame. Can work at sub-zero temperatures. The wettability allows it to be used for extinguishing smoldering materials. The possibility of storage in a liquefied state makes it possible to use smaller tanks in volume and number. They are capable of extinguishing a flame within 10-20 seconds and can prevent an explosion of a gas-air mixture.

Freons have a number of disadvantages.

At temperatures above 600 degrees, they begin to emit highly toxic gases that are dangerous to human life, but under normal conditions they are harmless.

Many refrigerants (freons) have been discontinued due to their destructive effect on the ozone layer. They are saturated fluorocarbons, which after use remain in the earth's atmosphere for decades. After the adoption of amendments to the Montreal and Kyoto Protocols, they were prohibited due to increased environmental danger. By 2030, their production will practically cease.

Types of refrigerants for fire extinguishing

Gas fire extinguishing agent freon 23 (trifluoromethane) is a non-flammable, low-toxic gas with zero ozone depletion potential. According to the danger of exposure to humans, it belongs to the fourth class. At temperatures above 600 degrees Celsius, it emits toxic gases such as phosgene. Freon 23 is approved for use in Russia. High fire extinguishing ability. It is stored in liquefied form in cylinders with a pressure of up to 150 bar.

Gas fire extinguishing freon 125 (pentafluoroethane) is used in residential and industrial buildings. The extinguishing agent used is a colorless, non-flammable and non-toxic gas with zero ozone depletion potential. Freon 125 is a thermostable gas with a fire extinguishing concentration of 9.8%. The maximum permissible concentration for humans is 10%. The excess is insignificant, so it is used in the absence of people in the room. When a fire alarm sounds, you must leave the premises. High fire extinguishing ability. Stored in cylinders with pressure up to 60 bar.

Freon 218 (octafluoropropane) has environmental friendliness, safety and fire extinguishing properties similar to other gases of the freon series. Stored in cylinders with a pressure of 20 atmospheres.

Freon 227EA (heptafluoropropane) can be used to extinguish fires in premises where people are present. It is environmentally friendly and has zero ability to destroy the ozone layer. Freon-227ea is a colorless, non-flammable, low-toxic gas. It is thermostable, but at temperatures above 600 degrees it releases toxic substances such as phosgene. It is a good dielectric, which allows it to be used to extinguish fires in server rooms. Stored in tanks designed for a pressure of 20 atmospheres.

Freon 318C (octafluorocyclobutane) is the best among the freon gases in terms of safety for humans, which affects its price. Other characteristics are the same as those of other refrigerants permitted in Russia. Stored in low pressure cylinders in liquefied form.

Operation of refrigerants

Refrigerants 23 are stored in cylinders designed for a pressure of 150 atmospheres, the rest can be stored in cylinders for 60 atmospheres. The choice of one or another cylinder depends on the storage conditions and the requirements for the speed of delivery of the fire extinguishing agent to the fire site. Cylinders are stored at temperatures from -40 to +60 degrees. Direct sunlight must be avoided. In automatic fire extinguishing systems, a special device is provided for constant monitoring of gas mass. Some modules have a reusable locking device, allowing them to be reused. Refueling is carried out at specialized and certified stations.

What modules use refrigerants?

For freon 23, a tank designed for a pressure of 150 atmospheres is used as a gas fire extinguishing module (GMF). MGP are used for storing and releasing fire extinguishing agents by fire alarm signal or manually. They are cylinders with shut-off and release devices. The remaining freon fire extinguishing modules use low pressure containers, ranging from 20 to 60 bar. The volume of tanks intended for refrigerant gases ranges from 5.1 liters to 240 liters. High pressure containers are available in a seamless version.

Calculation of gas fire extinguishing begins with determining the specifics of the object, determining the type of fire extinguishing installation. It is necessary to comply with the requirements of regulatory documents. For example, the calculation of gas fire extinguishing freon 23 must necessarily take into account that it has an operating pressure of 150 atmospheres, unlike other freons. Knowing that the fire extinguishing concentration of gas is above 30 percent, much more is required. Only specialists can take into account all the points. When properly designed, an automatic gas fire extinguishing system can be an economically viable option for fire protection.