Portable fire extinguishers
1 Scope
This document specifies the terms and definitions, classification and models of portable fire extinguishers (hereinafter referred to as fire extinguishers), and also specifies the performance requirements, colors and marks, manuals, inspection rules, packaging, transportation and storage of portable fire extinguishers and components, as well as their test methods.
This document is applicable to the design, manufacture and inspection of portable fire extinguishers and their components used in industrial and civil buildings.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 192 General purpose metric screw threads - Basic profile
GB/T 193 General purpose metric screw threads - General plan
GB/T 196 General purpose metric screw threads - Basic dimensions
GB/T 197 General purpose metric screw threads - Tolerances
GB/T 1804 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 2516 General purpose metric screw threads - Limit deviations
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 3181 Colour standard for paint film
GB 4066 Powder extinguishing agent
GB 4396 Fire extinguishing agent - Carbon dioxide
GB/T 4423 Copper and copper-alloy cold-drawn rod and bar
GB/T 4968 Classification of fires
GB/T 5099.1 Seamless steel gas cylinders - Part 1:Quenched and tempered steel cylinders with tensile strength less than 1100MPa
GB/T 5231 Designation and chemical composition of wrought copper and copper alloys
GB/T 5907.5 Fire protection vocabulary - Part 5: Fire products
GB/T 8335 Special threads for gas cylinders
GB/T 9251 Methods for hydrostatic test of gas cylinders
GB/T 9252 Method for pressure cycling test of gas cylinders
GB/T 11640 Seamless aluminum alloy gas cylinders
GB/T 13005 Terminology of gas cylinders
GB/T 15385 Method for hydraulic burst test of gas cylinder
GB 17835 Water based extinguishing agent
GB 25971 Fire extinguishing agent hexafluoropropane (HFC236fa)
GB 26861 Safety code of electric power industry - Part of high voltage laboratory
GB/T 33209 Welding procedure qualification for welded gas cylinders
HG/T 2579 Rubber compounds of O-rings used for hydraulic fluid power system
XF 578 Superfine powder extinguishing agent
XF 634 Adiabatic protective clothing for firefighter
XF 979 Fire extinguishing media - D powder
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 4968, GB/T 5907.5 and GB/T 13005 and the following apply.
3.1
portable fire extinguishers
carbon dioxide fire extinguishers with a total mass of not greater than 23kg and other types of fire extinguishers with a total mass of not greater than 20kg
Note: Portable fire extinguisher which can discharge extinguishing agent to extinguish fire under the action of its internal pressure.
[Source: GB/T 5907.5-2015, 2.5.1.1, modified]
3.2
charge of extinguisher
volume (L) of extinguishing agent filled in water-based fire extinguishers or mass (kg) of extinguishing agent filled in other types of fire extinguishers
3.3
effective discharge time
duration from the time when the extinguishing agent is discharged from the nozzle of the fire extinguisher to the time when the gaseous point of the discharging flow appears, during which the fire extinguisher valve is fully open
Note: Gaseous point refers to the transition point of the discharging flow of fire extinguisher from extinguishing agent to propellant.
3.4
complete discharge
state when the internal pressure of fire extinguisher is equal to its external pressure with the fire extinguisher valve fully open
3.5
bulk range
distance between the farthest point of the discharging flow and the nozzle of the fire extinguisher when discharging to 50% of its charge
3.6
delayed-action time of discharge
duration from the time when the fire extinguisher valve is fully opened to the time when the extinguishing agent starts to be discharged from the nozzle
4 Classification and model
4.1 Classification
4.1.1 Portable fire extinguishers are classified as follows according to the extinguishing agents filled:
a) powder fire extinguishers;
b) water-based fire extinguishers (including pure water or water with additives such as wetting agent, thickening agent, flame retardant, foaming agent and wet chemical agent);
c) carbon dioxide fire extinguishers;
d) clean agent fire extinguishers.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and model
4.1 Classification
4.2 Types
5 Performance requirements for fire extinguishers
5.1 Service temperature range
5.2 Filling requirements
5.3 Discharging performance
5.4 Mechanical properties
5.5 Sealing performance
5.6 Corrosion resistance
5.7 Fire extinguishing performance
5.8 Electrical insulation performance
6 Performance requirements for components of an extinguisher
6.1 Cylinder
6.2 Fire extinguisher valve components
6.3 Safety device
6.4 Pressure gauge
6.5 Discharging hose
6.6 Filter screen for water-based fire extinguisher
6.7 Rubber seals
6.8 Plastic parts
6.9 Fixing frames
6.10 Extinguishing agents
6.11 Propellant
7 Test methods of fire extinguishers
7.1 Filling inspection
7.2 Discharging performance test
7.3 Mechanical performance test
7.4 Sealing performance test
7.5 Corrosion resistance test
7.6 Fire extinguishing performance test
7.7 Electrical insulation performance test
8 Test methods of components of an extinguisher
8.1 Test of cylinder
8.2 Test of fire extinguisher valve components
8.3 Test of safety device
8.4 Test of pressure gauge
8.5 Test of discharging hose
8.6 Test of filter screen for water-based fire extinguisher
8.7 Test of rubber seals
8.8 Test of plastic parts
8.9 Test of fixing frames
8.10 Test of extinguishing agents
8.11 Test of propellant
9 Colors and marks
9.1 Colors
9.2 Marking
10 Instructions
10.1 Operating instructions
10.2 Maintenance instructions
11 Inspection rules
11.1 Inspection classification and items
11.2 Sampling
11.3 Judgment of inspection results
12 Packaging, transportation and storage
12.1 Packaging
12.2 Transportation
12.3 Storage
Annex A (Normative) Characteristic parameters, steel impression mark information and cylinder valve component torque of seamless cylinders of carbon dioxide fire extinguishers
Annex B (Normative) Low pressure cylinders of portable fire extinguishers
Annex C (Normative) Valves of portable fire extinguishers
Annex D (Normative) Pressure gauge
Annex E (Informative) Vibration and impact test devices for powder fire extinguishers
Annex F (Informative) Class D fire test methods
