Portable fire extinguishers
Part 7: Characteristics, performance requirements and test methods
Foreword
Scope
Normative references
Terms and definitions
General
Description of a portable fire extinguisher
Control of discharge
Operating position
Hose assembly
Propellants
Stored pressure extinguishers
Testing of portable fire extinguishers
Nominal charges, filling tolerances and minimum fire performance
Nominal charges
Filling tolerances
Design of the filling opening, excluding carbon dioxide fire extinguishers
Minimum fire ratings
Duration of operation, residual charge and operating temperatures
Duration of operation
Residual charge
Commencement of discharge
Effective range of operating temperature
Retention of propellant
Verification
Acceptance levels
Production leak tests
Dielectric test for water based extinguishers
General
Required performance
Requirements for components
General
Operation and emission control mechanisms/devices
Safety devices
Filter for water based portable fire extinguishers
Hose and coupling systems
Control valve
Means of pressure indication
Pressure gauge
Pressure indicator
Horns for carbon dioxide portable fire extinguishers
Portable fire extinguisher mounting bracket
Resistance to corrosion19
Resistance to external corrosion
Resistance to extinguishing medium of extinguishers using water based media
Fire performance
General
Class A fire rating
Class B fire rating
Class F fire rating
Portable fire extinguisher identification
Colour
Marking
Maintenance
Annex A (normative) Duration of operation, residual charge tests
Annex B (normative) Range of operating temperature
Annex C (normative) Dielectric test
Annex D (normative) Operation and emission control mechanisms/devices
Annex E (normative) Test for performance of the hose
Annex F (normative) Control valve test
Annex G (normative) Tests on the horn
Annex H (normative) Resistance to corrosion
Annex I (normative) Fire tests
Annex J (normative) Measurement of moisture content of wood
Annex K (normative) Compaction procedure
Annex L (normative) !Specific requirements for Class F fire extinguisher
Annex M (normative) !Polar solvents
Bibliography
استاندارد BS EN 3-7:2004 +A1:2007
