Description

Ansul CLASS B AFFF 3% Concentrate Foam Drum – 443091

ANSULITE AFC3B 3% AFFF (Aqueous Film-Forming Foam) Concentrate combines fluoro- and hydrocarbon-surfactant
technologies to provide superior fire and vapor suppression for Class B hydrocarbon fuel fires. This synthetic foam concentrate is intended for firefighting applications at 3% solution in fresh, salt, or hard water.

ANSULITE AFC3B foam solution utilizes three suppression mechanisms intended for rapid fire knockdown and superior burnback resistance:

• The foam blanket blocks oxygen supply to the fuel.
• Liquid drains from the foam blanket and forms an aqueous film that suppresses fuel vapor and seals the fuel surface.
• The water content of the foam solution produces a cooling effect for additional fire suppression.

Typical Physiochemical Properties

• Appearance Pale yellow liquid
• Density 1.01 ± 0.02 g/ml
• pH 7.0 – 8.5
• Refractive Index 1.3480 minimum
• Viscosity* 2 ± 1 cSt at 77 °C (25 °C)
• Viscosity* 3 ± 1 cSt at 35 °C (2 °C)
• Spreading Coefficient 3 dynes/cm minimum at 3% dilution
• Pour Point 29 °F (-2 °C)
• Freeze Point 25 °F (-4 °C)
• Storage and Operating Range 35 °F to 120 °F (2 °C to 49 °C) * Cannon-Fenske viscometer

Application

ANSULITE AFC3B 3% AFFF Concentrate is intended for use on Class B hydrocarbon fuel fires with low water solubility, such as crude oils, gasolines, diesel fuels, and aviation fuels. It is not suitable for use on polar fuels with appreciable water solubility, such as methyl and ethyl alcohol, acetone, and methyl ethyl ketone. It may be used in conjunction with dry chemical agents to provide even greater fire suppression performance. ANSULITE AFC3B Concentrate can be ideal for fixed, semi-fixed, and emergency response firefighting applications such as:

• Fuel or chemical storage tanks
• Industrial chemical and petroleum processing facilities
• Truck/rail loading and unloading facilities
• Flammable liquid containment areas
• Aircraft hangars
• Mobile equipment

Approvals, Listings, and Standards

ANSULITE AFC3B 3% AFFF Concentrate is designed in accordance with National Fire Protection Association (NFPA)
Standard 11 for Low-, Medium-, and High-Expansion foam. The concentrate is approved, listed, qualified under, or meets the requirements of the following specifications and standards:

• UL Standard 162, Foam Liquid Concentrates
• UL Listed for use with an extensive array of proportioning and discharge equipment, including sprinklers as required by NFPA 16
• ULC S564, Category 1 Foam Liquid Concentrates
• FM Approvals – FM 5130

The ANSULITE AFC3B 3% AFFF Concentrate formulation contains short-chain, C-6 fluorochemicals manufactured using a telomer-based process that does not produce PFOS.

Foaming Properties

ANSULITE AFC3B 3% AFFF Concentrate may be effectively applied using most conventional foam discharge equipment at 3% dilution with fresh, salt, or hard water. For optimum performance, water hardness should not exceed 500 ppm expressed as calcium and magnesium.

ANSULITE AFC3B Concentrate requires low energy to foam and the foam solution may be applied with aspirating and nonaspirating discharge devices. Non-aspirating devices, such as handline water fog/stream nozzles or standard sprinkler heads, typically produce expansion ratios from 2:1 to 4:1. Aspirating discharge devices typically produce expansion ratios from 3.5:1 to 10:1 depending on the type of device and the flow rate.Medium-expansion discharge devices typically produce expansion ratios from 20:1 to 60:1.

Typical Foam Characteristics* (Fresh and Sea Water)

• Proportioning Rate 3%
• Expansion Ratio ≥ 7
• 25% Drain Time (min:sec) ≥ 2:30
• 50% Drain Time (min:sec) ≥ 4:30
• per EN 1568-3: 2008 protocol

Proportioning

The recommended operational temperature range for ANSULITE AFC3B 3% AFFF Concentrate is 35 °F to 120 °F (2 °C to 49 °C) per UL-162. This foam concentrate can be correctly proportioned using most conventional, properly calibrated, in-line proportioning equipment such as:

• Balanced and in-line balanced pressure pump proportioners
• Balanced pressure bladder tanks and ratio flow controllers
• Around-the-pump type proportioners
• Fixed or portable in-line venturi type proportioners
• Handline nozzles with fixed eductor/pick-up tubes
• For immediate use: The concentrate may also be diluted with fresh or sea water to a 3% pre-mix solution.
• For delayed use: Consult Technical Services for guidance regarding the suitability of a stored pre-mix solution (freshwater only).