T-STORM WTS11

T-STORM WTS11 1% AFFF (Aqueous Film-Forming Foam) Concentrate from Williams Fire & Hazard Control 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 1% solution in fresh, salt, or hard water.

T-STORM WTS11 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 AT 77 °F (25 °C)

• Appearance   –  Clear amber liquid
• Density  –  1.02 ± 0.02 g/ml
• pH  –  7.0 – 8.5
• Refractive Index  –  1.3700 minimum
• Viscosity*   –  5 ± 2 cSt
• Spreading Coefficient   –  3 dynes/cm minimum at 1% dilution
• Pour Point   –  18 °F (-8 °C)
• Freeze Point   –  25 °F (-4 °C)
  *Cannon-Fenske viscometer at 77 °F (25 °C)

The environmentally-mindful T-STORM WTS11 1% AFFF Concentrate formulation contains short-chain, C-6 fluorochemicals manufactured using a telomer-based process. The telomer process produces no PFOS, and these C-6 materials do not breakdown to yield PFOA. The fluorochemicals used in the concentrate meet the goals of the U.S. Environmental Protection Agency 2010/15
PFOA Stewardship Program and the current ECHA Directive (EU) 2017/1000.

Approvals, Listings, and Standards

T-STORM WTS11 1% 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
• ULC S564, Category 2 Foam Liquid Concentrates

Application

T-STORM WTS11 1% 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. The concentrate also has excellent wetting properties that can effectively combat Class A fires.

To provide even greater fire protection capability, T-STORM WTS11 foam solution may be applied simultaneously with WILLIAMS FIRE & HAZARD CONTROL PKW dry chemical for a twin-agent system.

T-STORM WTS11 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
• Docks and on-board marine systems
• Mobile equipment

Foaming Properties

T-STORM WTS11 1% AFFF Concentrate may be effectively applied using most conventional foam discharge equipment at a 1% dilution with fresh, salt, or hard water. For optimum performance, water hardness should not exceed 500 ppm expressed as calcium and magnesium.

T-STORM WTS11 Concentrate requires low energy to foam and the foam solution may be applied with aspirating and non-aspirating 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 low-expansion 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.

Proportioning

The recommended operational temperature range for T-STORM WTS11 1% 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 salt water to a 1% pre-mix solution.
For delayed use: Consult Technical Services for guidance regarding suitability of a stored pre-mix solution (fresh water only).

Storage and Handling

T-STORM WTS11 1% AFFF Concentrate should be stored in the original supplied package (HDPE totes, drums, or pails) or in the recommended foam system equipment as outlined in Johnson
Controls Technical Bulletin “Storage of Foam Concentrates”. 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 the foam concentrate’s long-term effectiveness include temperature exposure and cycling, storage container characteristics, air exposure, evaporation, dilution, and contamination. The effective life of T-STORM WTS11 Concentrate can be maximized through optimal storage conditions and proper handling. T-STORM concentrates have demonstrated effective firefighting performance with contents stored in the original package under proper conditions for more than 10 years.

Mixing T-STORM WTS11 Concentrate with other foam concentrates for long-term storage is not recommended. Use in conjunction with comparable 1% AFFF products for immediate incident response is appropriate.

Materials of Construction Compatibility

To help avoid corrosion, galvanized pipe and fittings should never be used in contact with undiluted T-STORM WTS11 1% AFFF Concentrate. Refer to Johnson Controls Technical Bulletin “Acceptable Materials of Construction” for recommendations and guidance regarding compatibility of foam concentrate with common materials of construction in the firefighting foam industry.

Inspection

T-STORM WTS11 1% AFFF Concentrate should be inspected periodically in accordance with NFPA 11, EN 13565-2, or other relevant standard. A representative concentrate sample should be sent to Johnson Controls Foam Analytical Services or other qualified laboratory for quality analysis per the applicable standard. An annual inspection and sample analysis is typically sufficient, unless the product has been exposed to unusual conditions.

Quality Assurance

T-STORM WTS11 1% AFFF Concentrate is subject to stringent quality controls throughout production, from incoming raw materials inspection to finished product testing, and is manufactured in an ISO 9001:2008 certified facility.

Ordering Information

T-STORM WTS11 1% AFFF Concentrate is available in pails, drums, totes or bulk shipment.

For bulk orders, consult an account representative.
*Totes are not UL/ULC approved packaging.