EN 3-7 Portable Fire Extinguishers - Features, Performance Requirements and Test Methods

This standard specifies specifications, performance requirements and test methods for portable fire extinguishers.

Reference to the suitability of an extinguisher for use on gas fires (class C fires) is at the discretion of the manufacturer, but only applies to powder type extinguishers that have earned a class B or class A and class B rating.

The suitability of extinguishers for use in class D fires (fires involving flammable metals) is beyond the scope of this standard in terms of test fires. However, extinguishers claiming Class D compliance are within the scope of this standard for powder extinguishers in all other respects.

It is considered dangerous to use powder and carbon dioxide fire extinguishers in class F fires. Therefore, powder and carbon dioxide fire extinguishers are excluded for compliance with class F in this European Standard.

Extinguishing a metal fire is such a special case (in terms of the metal itself, its shape, the configuration of the fire, etc.) that it is not possible to define a representative standard fire for test purposes. In class D fires, the effectiveness of extinguishers must be determined on a case-by-case basis.

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