SZNS SANS 020:2011 Portable refillable fire extinguishers

E475.00

This standard covers the principal requirements for safety, reliability and performance of portable, stored pressure, refillable type fire extinguishers suitable for use on classes A, B and C.

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Description

This standard covers the principal requirements for safety, reliability and performance of portable, stored pressure, refillable type fire extinguishers suitable for use on classes A, B and C.

TABLE OF CONTENTS

Contents Page
1 Scope 1
2 Normative references 1
3 Definitions 1
4 General requirements 3
4.1 Test fire rating, capacity and mass 3
4.2 Components of a fire extinguisher 3
4.3 Method of operation 4
4.4 Design pressures 4
4.5 Charge of a fire extinguisher 4
4.6 Electrical conductivity of a water-based fire extinguisher charge 5
4.7 Production tests 5
5 Design and construction 6
5.1 Corrosion resistance of components 6
5.2 Dissimilar metals 6
5.3 Design, construction and quality of plastic components 6
5.4 Cylinders 7
5.5 Operation and emission control mechanisms or devices 7
5.6 Siphon tubes 8
5.7 Discharge hose assemblies 8
5.8 Discharge control valves 8
5.9 Discharge nozzles 8
5.10 Pressure indicators 9
5.11 Verification of pressure indicators 10
5.12 Support fittings on extinguisher 10
5.13 Mounting brackets for extinguishers 10
5.14 Pressure relief valves 10
5.15 Finish and colour 10
6 Performance requirements 11
6.1 Discharge 11
6.2 Ability to extinguish fires 12
7 Packing and marking 12
7.1 Packing 12
7.2 Marking 12
7.3 Durability of marking 14
8 Inspection and methods of test 14
8.1 Inspection 14
8.2 Leakage test 14
8.3 Design pressure test for complete fire extinguisher (cylinder and all components) 14
8.4 Test for corrosion resistance of the assembled fire extinguisher 14
8.5 Test for the design, construction and quality of plastic components. 14
8.6 Test for resistance of plastic components to burst pressure 15
8.7 Impact test on operating heads 16
8.8 Test for resistance of hose to kinking 16
8.9 Hydrostatic pressure test on hose assemblies 17
8.10 Pressure relief valve test (when relevant) 17
8.11 Intermittent discharge test 17
8.12 Fire extinguisher performance test 17
8.13 Test for electrical conductivity 18
Annex A (normative)  Notes to purchasers 19
Annex B (normative)  Indication of test fire rating and minimum fire ratings 20
Annex C (normative) Fire classification symbols 21
Annex D (normative) Class test fires 22
Annex E (informative) Recommended type of large and small wall brackets for mounting of fire extinguishers 24
Annex E (informative) 24
Annex F (informative) Quality verification of portable refillable fire extinguishers 25
Bibliography 26

Additional information

Format

PDF, Hardcopy