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eLibrary > BS EN 3-8:2021 Portable fire extinguishers - Requirements for the construction, pressure resistance and mechanical tests for extinguishers with a maximum allowable pressure equal to or lower than 30 bar, which comply with the requirements of EN 3-7 >

BS EN 3-8:2021 Portable fire extinguishers - Requirements for the construction, pressure resistance and mechanical tests for extinguishers with a maximum allowable pressure equal to or lower than 30 bar, which comply with the requirements of EN 3-7, 2022

BS EN 3-8:2021 Portable fire extinguishers - Requirements for the construction, pressure resistance and mechanical tests for extinguishers with a maximum allowable pressure equal to or lower than 30 bar, which comply with the requirements of EN 3-7, 2022

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1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Design [Go to Page]
5.1 Design parameters
5.2 General
5.3 Bodies [Go to Page]
5.3.1 General Test Conditions
5.3.2 Burst test [Go to Page]
5.3.2.1 Conditions
5.3.2.2 Requirements
5.3.3 Crushing test – low temperature (extinguisher bodies only) [Go to Page]
5.3.3.1 General
5.3.3.2 Conditions
5.3.3.3 Requirements
5.3.4 Macroscopic examination of the extinguisher body [Go to Page]
5.3.4.1 Conditions
5.3.4.2 Requirements
5.3.5 Requirements for the base
5.3.6 Required for use with plastic components
5.4 Fittings (except pressure gauge, as defined in EN 37) [Go to Page]
5.4.1 Conditions
5.4.2 Requirements
5.5 Pressure gauge [Go to Page]
5.5.1 Conditions
5.5.2 Requirements
5.6 Pressure test (test pressure PT) – extinguisher bodies, fittings and assemblies [Go to Page]
5.6.1 Conditions
5.6.2 Requirements – Extinguisher bodies
5.6.3 Requirements – Fittings
5.6.4 Requirements – Assembly
5.7 Overfill pressure test (for water based media cartridge operated extinguishers only) [Go to Page]
5.7.1 General
5.7.2 Conditions
5.7.3 Requirements
5.8 Plastics components (subject to pressure) except hoses, and nozzles
5.9 Resistance to impact [Go to Page]
5.9.1 Conditions
5.9.2 Requirements
5.10 Resistance to Corrosion [Go to Page]
5.10.1 External corrosion
5.10.2 Resistance to media
5.10.3 Material compatibility
5.11 Filling opening
5.12 Safety device
6 Marking [Go to Page]
6.1 General
6.2 Extinguisher body
6.3 Extinguisher assembly
7 Manufacturing, Inspection and testing during production [Go to Page]
7.1 General requirements
7.2 Permanent joining [Go to Page]
7.2.1 Introduction
7.2.2 Welding procedures [Go to Page]
7.2.2.1 General
7.2.2.2 Welding personnel
7.2.3 Brazing procedures [Go to Page]
7.2.3.1 General
7.2.3.2 Brazing personnel
7.3 Traceability [Go to Page]
7.3.1 Pressure retaining parts
7.3.2 Operating devices, filling caps and hose assemblies
7.4 Pressure testing [Go to Page]
7.4.1 Personnel
7.4.2 Proof testing [Go to Page]
7.4.2.1 General
7.4.2.2 Requirements for extinguisher bodies
7.4.2.3 Requirements for fittings (excluding pressure relief devices and fittings to be ruptured on over pressure)
7.5 Burst and crushing tests [Go to Page]
7.5.1 Extinguisher bodies [Go to Page]
7.5.1.1 Number of extinguisher bodies for tests
7.5.1.2 Conditions
7.5.1.3 Requirements
7.5.1.4 Failure
7.5.2 Fittings – subject to pressure [Go to Page]
7.5.2.1 Number of Fittings for tests
7.5.2.2 Conditions
7.5.2.3 Requirements
7.5.2.4 Failure
7.6 Final assessment [Go to Page]
7.6.1 Test pressure verification
7.6.2 Final Inspection
8 Materials [Go to Page]
8.1 General
8.2 Pressure bearing parts
8.3 Non-pressure bearing parts
8.4 Plastic components
8.5 Documentation
9 Propellant gas cartridges
Annex A (normative)Classification of the different parts of an extinguisher subject to internal pressure
Annex B (normative)Pressures and temperatures [Go to Page]
B.1 The scheme given in Table B.1 illustrate the definitions of pressure given in Clause 4
B.2 The scheme given in Table B.2 illustrate the definitions of temperature given in Clause 4 and in 5.1
Annex C (normative)Impact test — Resistance to impact by falling weight [Go to Page]
C.1 General
C.2 Apparatus
C.3 Procedure
Annex D (normative)Specification for plastics components (except hoses and nozzles) [Go to Page]
D.1 General
D.2 Requirements for plastics components subject to pressure [Go to Page]
D.2.1 General
D.2.2 Burst under pressure
D.2.3 Temperature conditioning at TSmax
D.2.4 Ageing test – Xenon arc
D.2.5 Impact test after ageing at 20 °C
D.2.6 Plastic/metal thread design
Annex E (normative)Propellant gas cartridges - Marking
Annex F (normative)Overfill pressure test
Annex G (normative)Mechanical strength test (crushing test) [Go to Page]
G.1 General
G.2 Long bodies
G.3 Short bodies
Annex H (normative)Materials – Quality control documents
Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2014/68/EU aimed to be covered [Go to Page]

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BS EN 3-8:2021 Portable fire extinguishers - Requirements for the construction, pressure resistance and mechanical tests for extinguishers with a maximum allowable pressure equal to or lower than 30 bar, which comply with the requirements of EN 3-7, 2022

To continue with accurate pricing,
please select your company type below: