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AQUAFOM AFFF TYPE FLUOROSYNTHETIC FILM-FORMING FOAM CONCENTRATE

AQUAFOM AFFF TYPE FLUOROSYNTHETIC FILM-FORMING FOAM CONCENTRATE

TU 2412-019-72410778-08 (as amended 1)

General information

Full name: Aquafom AFFF type Synthetic fluorine-containing film-forming foam special purpose concentrates to extinguish flammable liquids

Purpose and scope

Aquafom AFFF type Synthetic fluorine-containing film-forming foam special purpose concentrates are designed to extinguish fires class A and B in accordance with GOST 27331. The foam concentrate is an aqueous solution of fluorosynthetic surface-active substances (FPAS), hydrocarbon surfactants with stabilizing and frost-resistant additives.

Modifications

Aquafom AFFF type foam concentrates are divided into 2 types.

  • Aquafom-IN is a synthetic fluorine-containing film-forming foam special purpose concentrate designed to extinguish fires of water-insoluble (non-polar) combustible liquids with low expansion foam. May be used for subsurface suppression;
  • Aquafom-INSV is a synthetic fluorine-containing film-forming foam special purpose concentrate to extinguish fires of water-insoluble (non-polar) combustible liquids with foam of low, medium and high expansion (universal).

The mechanism of action of foam concentrates of this type when extinguishing with low expansion foam is to isolate a combustible substance with a self-spreading film of the foam concentrate solution, end oxygen access to the fire bed and decrease the temperature due to cooling properties by the foam concentrate solution. Due to the self-dissolve ability and tightening vapor breakthroughs of flammable liquids, a thin film provides effective fire extinction and protects from burnback for up to several hours.

The mechanism of action of Aquafom-INSV when using high expansion foam is similar to that of S type foam concentrate. When using the Aquafom-INSV foam concentrate for extinguishing medium expansion foam, an intermediate mechanism of action is realized: insulating layers are formed of both foam and film. A detailed description is provided in the subsection “General information about foam firefighting technologies”.

Modifications of Aquafom-IN and Aquafom-INSV depending on the volume concentration of the foam concentrate in the premix and pour point are:

  • Aquafom-IN 1%, 3% and 6% with pour points from minus 15 ºС max to minus 60 ºС max;
  • Aquafom-INSV 1% with pour points from minus 15 ºС max to minus 30 ºС max;
  • Aquafom-INSV 3% and 6% with pour points from minus 15 ºС max to minus 50 ºС max.

Specifications

Key Quality Indicators

Name of indicator Value of foam concentrate indicator Test Method
Aquafom fluorosynthetic film-forming foam concentrate
INSV IN
1% 3% 6% 1% 3% 6%
Appearance Homogeneous liquid without sediment and separation according to paragraph 5.2. GOST R 50588 -2012
Density at 20 °C, kg/m3 1000–1200 according to GOST 18995 .1
Kinematic viscosity at 20 °C, mm2·s-1, no more than 100 according to GOST 33
Hydrogen index (pH), in the range of 6,5–8,5 according to GOST 22567 .5
Pour point, °C, -15 и
-30
from - 15 to - 50 from - 15 to - 60 according to GOST 18995 .5
The foam expansion from the premix when using fresh and salt water: according to paragraph 5.3 of GOST R 50588 -2012
  • low, but not greater than
20 20
  • medium, but not less than
40
  • high, but not less than
200
Medium expansion foam stability when using fresh and salt water (evolution of 50% of the liquid volume from the foam), s, at least 300 according to paragraph 5.3 of GOST R 50588 -2012
High expansion foam stability when using fresh and salt water (evolution of 50% of the liquid volume), s, at least 200 according to paragraph 5.3 of GOST R 50588 -2012
Extinguishing time of n-heptane with a low expansion foam when using fresh/salt water at a premix supply rate of 0,059 ± 0,002 dm3·m-2·s-1, s, max 90/120 According to paragraph 5.4 of GOST R 50588 -2012
Extinguishing time of n-heptane with medium expansion foam when using fresh/salt water at a premix supply rate of 0,032 ± 0,002 dm3·m-2·s-1, s, max 100/120 according to paragraph 5.6 of GOST R 50588 -2012
Extinguishing time of n-heptane with high expansion foam when using fresh/salt water at a premix supply rate of
0,059 ± 0,002 dm3·m-2·s-1, s, max
90/120 according to paragraph 5.7 of GOST R 50588 -2012
Burnback time of the pattern fire bed after extinguishing with low expansion foam when using fresh/salt water, s, max 450/330 according to paragraph 5.4 of GOST R 50588 -2012
Burnback time of the pattern fire bed after extinguishing with medium expansion foam when using fresh/salt water, s, max 400/330 according to paragraph 5.6 GOST R 50588 -2012
The surface tension of the foam concentrate premix when using fresh and salt water, mN/m, max 17,3 according to paragraph 5.8 of GOST R 50588 -2012
Interfacial tension of the premix at the border with heptane when using fresh and salt water, mN/m, max 2,0 according to paragraph 5.8 of GOST R 50588 -2012

Fire extinguishing rate

The intensity of the Aquafom-IN and Aquafom-INSV foam concentrate solution supply for extinguishing fires with foam of low and medium expansion is adopted in accordance with SP 155.13130.2014 and other regulatory documents.

When calculating fire extinguishing installations with foam of low, medium and high expansion, the requirements of SP 5.13130.2009, sections 5, 6 and 7, annexes B and Г should be taken into consideration.

Environmental protection

Aquafom-IN and Aquafom-INSV foam concentrates are biodegradable products. According to GOST 32509-2013, biodegradability class 2: “moderately degradable” substances. The foam concentrates are allowed to discharge into industrial wastewater after diluting it with water to the maximum permissible concentration (MPC) of surfactants equal 20 mg/dm3 under the active substance. MPC of the foam concentrate in the water of economic and cultural objects - 0.5 mg/dm3.

Wastewater generated by flushing equipment is discharged into an industrial sewer, from where it flows to biological treatment plants.

In the process of production and use of Aquafom-IN and Aquafom-INSV foam concentrates no secondary hazardous compounds are formed.

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  • General information
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