ISO 7203-3:2019 消火媒体—泡濃縮物—パート3：水混和性液体への最高の用途のための低膨張泡濃縮物の仕様 | ページ 6

3.1

characteristic value

value declared by the foam concentrate supplier for the chemical and physical properties and the performances of the foam, foam solution, and foam concentrate

3.2

25 % drainage time

time for 25 % of the liquid content of a foam to drain out

3.3

expansion

ratio of the volume of foam to the volume of the foam solution from which it was made

3.4

low-expansion

expansion (3.3) in the range 1 to 20, as applied to foam and to associated equipment, systems and concentrates

3.5

medium-expansion

expansion (3.3) in the range 21 to 200, as applied to foam and to associated equipment, systems and concentrates

3.6

high-expansion

expansion (3.3) greater than 200, as applied to foam and to associated equipment, systems and concentrates

3.7

foam

<firefighting> aggregate of air-filled bubbles formed from an aqueous solution of a suitable foam concentrate

3.8

concentrate

<foam> liquid that, when mixed with water in the appropriate concentration, gives a foam solution

3.9

protein foam concentrate

P

foam concentrate (3.8) derived from hydrolysed protein materials

3.10

fluoroprotein foam concentrate

FP

protein foam concentrate (3.8) with added fluorinated surface-active agents

3.11

synthetic foam concentrate

S

foam concentrate (3.8) based on a mixture of hydrocarbon surface-active agents and which can contain fluorocarbons with additional stabilizers

3.12

alcohol-resistant foam concentrate

ar

foam concentrate (3.8) resistant to breakdown when applied to the surface of alcohol or other water-miscible solvents

3.13

aqueous film-forming foam concentrate

AFFF

foam concentrate (3.8) based on a mixture of hydrocarbon and fluorinated surface-active agents with the ability to form an aqueous film on the surface of some hydrocarbons

3.14

film-forming fluoroprotein foam concentrate

FFFP

fluoroprotein foam concentrate (3.8) that has the ability to form an aqueous film on the surface of some hydrocarbons

3.15

foam solution

solution of foam concentrate (3.8) and water

3.16

forceful application

application of foam such that it falls directly onto the surface of a liquid fuel

3.17

gentle application

application of foam indirectly to the surface of a liquid fuel via a backboard, tank wall or other surface

3.18

sediment

insoluble particles in the foam concentrate

3.19

spreading coefficient

value calculated from the measured surface and interfacial tensions to indicate the ability of one liquid to spontaneously spread across the surface of another

3.20

temperature for use

maximum and minimum temperature claimed by the manufacturer between which the foam concentrate is ready for use

3.21

fluorine free foam concentrate

F3

foam concentrate (3.8) which does not form an aqueous film on hydrocarbon fuels but is targeting Class B performance at forceful application and which is not containing any fluorochemicals

3.22

Class A foam concentrate

foam concentrate (3.8) for use on Class A fire (3.23)

3.23

Class A fire

fire involving solid materials, usually of an organic nature, in which combustion normally takes place with the formation of glowing embers

Note 1 to entry: Adapted from ISO 3941:2007, Clause 2.

Note 2 to entry: Class A fires involve solid materials, usually of an organic nature (such as vegetation, wood, cloth, and paper), rubber, and some plastics, in which combustion can occur at or below the surface of the material with or without the formation of glowing embers.