CHEMGUARD CHEMATTACK foam concentrate is a low-, medium-, and high-expansion Class A fire control foam concentrate formulated from specialty hydrocarbon surfactants, stabilizers, and solvents. CHEMATTACK foam solution is effective on many deep-seated Class A fires such as tire, paper, coal, and structure fires.
CHEMATTACK foam concentrate can be proportioned from 0.1% to 1.0% in fresh, brackish or sea water. Because of the extremely low proportioning rate, the foam concentrate offers outstanding economy in concentrate storage space, cost (compared to conventional 3% and 6% foam agents), and product transport requirements. For example, a 5-gal (19 L) pail of foam concentrate produces 500 gal (1,893 L) of fire control foam solution at 1% concentration and produces 5,000 gal (18,927 L) of foam solution at 0.1% concentration.
Fire suppression mechanisms and characteristics in effect when using CHEMATTACK foam concentrate include:
CHEMATTACK foam concentrate is designed for fire suppression use on Class A fuel fires including wood, paper, coal, and rubber fires. Although designed for Class A fires, the foam solution may be effective on some, contained Class B flammable liquid fires in emergency response situations when applied by portable medium- or high-expansion devices.
CHEMATTACK foam concentrate can be used with aspirating and non-aspirating discharge devices, compressed air foam systems (CAFS), or dropped from rotary wing aircraft. Applicable suppression mechanisms and some foam solution properties may vary with the type of foam delivery device used.
The recommended operational temperature range for CHEMATTACK foam concentrate is 32 °F to 120 °F (0 °C to 49 °C). It can be correctly proportioned using most conventional, properly calibrated, proportioning equipment such as:
At a given proportioning rate, the foam expansion may vary with the type of discharge device used.
For immediate use: The concentrate may be diluted with fresh or sea water for use as a pre-mix solution.
For delayed use: Long-term storage as a pre-mix solution is not recommended.
Storage and Handling
CHEMATTACK foam concentrate should be stored in the original supplied package (HDPE pails, drums, or totes) or in the equipment recommended by the manufacturer as part of the foam system. The product should be maintained within the recommended temperature range. If the concentrate freezes during transport or storage, full product serviceability can be restored upon thaw with gentle re-mixing.
Factors affecting foam concentrate’s long-term effectiveness include temperature exposure and cycling, storage container characteristics, air exposure, evaporation, dilution, and contamination. The effective life of CHEMATTACK foam concentrate can be maximized through optimal storage conditions and proper handling. CHEMGUARD concentrates have demonstrated effective firefighting performance with contents stored in the original package under proper conditions for more than 10 years.
Consult with Johnson Controls Technical Services before mixing CHEMATTACK foam concentrate with other Class A foam products. Different types of foam concentrates (i.e. AFFFs and Class A) should not be mixed together under any circumstance.
Materials of Construction Compatibility
Refer to Johnson Controls Technical Bulletin Acceptable Materials of Construction for recommendations and guidance regarding compatibility of CHEMATTACK foam concentrate with common materials of construction in the firefighting foam industry.
CHEMATTACK foam concentrate is available in pails, drums, totes, or bulk shipment.