ISO 7165 pdf download.Fire fighting — Portable fire extinguishers — Performance and construction
1 Scope
This International Standard specifies the principal requirements intended to ensure the safety, reliability and performance of portable fire extinguishers. It is applicable to a fully charged extinguisher having a maximum mass of 20 kg. NOTE In some cases, extinguishers having a total mass of up to 25 kg when fully charged may be approved, subject to local acceptance.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 31 30:1 975, Wood — Determination of moisture content for physical and mechanical tests . ISO 3941 :1 977, Classification of fires . ISO 4892-2:1 994, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc sources . ISO 5923:1 989, Fire protection — Fire extinguishing media — Carbon dioxide . ISO 7202:1 987, Fire protection — Fire extinguishing media — Powder. ISO 7203 (all parts), Fire extinguishing media — Foam concentrates . ISO 9227:1 990, Corrosion tests in artificial atmospheres — Salt spray tests . ISO 1 4520 (all parts), Gaseous fire-extinguishing systems — Physical properties and system design .
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply. 3.1 Classification of fires [ISO 3941 :1 977]
3.1.1 Class A fires involving solid materials, usually of an organic nature, in which combustion normally takes place with the formation of glowing embers 3.1.2 Class B fires involving liquids or liquefiable solids 3.1.3 Class C fires involving gases 3.1.4 Class D fires involving metals 3.2 portable extinguisher portable appliance containing an extinguishing medium which may be discharged and directed onto a fire by the action of internal pressure; discharge may be achieved by: ? stored pressure (constant pressurization of the extinguishing media container); ? cartridge operated [pressurization at the time of use by the release of a pressurizing gas stored in a separate high pressure container (cartridge)] 3.3 extinguishing medium substance contained in the extinguisher that causes extinguishment 3.4 charge of extinguisher mass or volume of the extinguishing medium contained in the extinguisher expressed in volume (litres) for water- based extinguishers and in mass (kilograms) for other extinguishers 3.5 service pressure p s equilibrium pressure developed in a normally charged and pressurized extinguisher conditioned at 20 °C for at least 1 8 h 3.6 maximum service pressure p ms equilibrium pressure developed in a normally charged and pressurized extinguisher which is conditioned at 60 °C for at least 1 8 h 3.7 complete discharge point in the discharge of an extinguisher when the internal pressure has equalized with the external pressure, with the valve control being kept fully open 3.8 effective discharge time time from the commencement of discharge of the extinguishing medium at the nozzle to the gas point of the discharge stream with the control valve fully open3.9 rechargeable extinguisher extinguisher designed to be recharged after use 3.10 disposable extinguisher non-rechargeable extinguisher extinguisher designed not to be recharged in the field or at the factory, but intended to be discarded after use 3.11 fill density mass in kilograms of extinguishing medium per litre of container volume as fitted for use, complete with valve and internal fittings 3.12 bulk range range of the extinguisher when 50 % of its media has been expelled 3.13 batch group of the same products made on the same production line using the same lot of materials during one production shift 3.14 gas point point where the medium discharge changes from predominately liquid medium to predominately expellant gas 3.15 propellant non-flammable compressed gas used to expel the extinguishing medium 3.16 clean agent electronically non-conductive gaseous or vaporizing liquid fire extinguishant that does not leave a residue upon evaporation