In the ISO 7203 standard published by the International Standards Organization (ISO), the basic properties and performance criteria of liquid foam concentrates used in the production of low-expansion foams for controlling, extinguishing and preventing re-ignition of liquid fires that are not miscible with water are explained. This standard contains minimum performance specifications for certain test fires. These foams are suitable for overhead application to water immiscible liquid fires. Foam concentrates may be suitable for use in suctionless sprayers or for sub-surface application to liquid fires.
In fact, this standard consists of the following sections under the heading "Fire extinguisher - Foam concentrates":
Foams can be used with other extinguishing agents, especially halons, carbon dioxide and powders, which are the subject of other international standards, including ISO 6183, ISO 7201 and ISO 7202 standards. A specification for foam systems is contained in the ISO 7076 standard.
Firefighting foams were developed primarily to deal with the hazards posed by liquid fuel fires. Water is used in most firefighting work. However, water is generally ineffective against fires involving flammable liquids. Because water has a greater density than many flammable liquids. Therefore, when applied, it quickly sinks under surfaces without a significant effect on fire. However, when some burning liquids, such as heavy fuel oils and crude oils, are overheated, the applied water begins to boil. The rapid expansion that occurs as the water turns into steam causes the burning fuel to spread. This Therefore, today, foam is preferred to extinguish liquid fires.
Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides testing services for foam concentrates, which are fire extinguishing tools, within the scope of ISO 7203 standard, with its trained and expert staff and advanced technological equipment.
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