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Foam. HomeFoam n Solution of air, water, foam concentrate, and mechanical agitation used to form a floating blanket on flammable and combustible liquids.

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Presentation on theme: "Foam. HomeFoam n Solution of air, water, foam concentrate, and mechanical agitation used to form a floating blanket on flammable and combustible liquids."— Presentation transcript:

1 Foam

2 HomeFoam n Solution of air, water, foam concentrate, and mechanical agitation used to form a floating blanket on flammable and combustible liquids. It prevents or extinguishes a fire by excluding air and cooling fuel. Foam also aids in preventing reignition by suppressing flammable vapors.

3 HomeTerminology n Foam concentrate - from factory n Foam solution - water + concentrate n Finished foam solution - water + concentrate + mechanical agitation

4 Home Foam Tetrahedron n Concentrate n Water n Air n Aeration (mechanical agitation)

5 Home Types of Foam n Protein n Fluoroprotein n Film Forming Fluoroprotein Foam (FFFP) n Aqeous Film Forming Foam (AFFF) n Alcohol Resistant AFFF (AR-AFFF)

6 HomeProtein n Originated in WWII n Derived from natural sources n 3% or 6% n Excellent water retention n High heat resistance n 35 to 120 degrees F n Hydrocarbons only n 10 year shelf life

7 HomeFluoroprotein n Fluorochemical surfactants added to reg. Protein foam n Can be used for Subsurface Injection n Not affected by thawing or freezing n 3%-6% n n 10 year shelf life

8 Home Film Forming Fluoroprotein Foam (FFFP) n 3%-6% n degrees F n Can be stored premixed in apparatus n Not affected by thawing or freezing n Can be used with fresh or salt water

9 Home Aqueous Film Forming Foam (AFFF) n Most used n All synthetic n 1% - 3% - 6% n Can be used with salt or fresh water n Can be premixed in apparatus water tanks n degrees F n Good low temperature viscosity

10 Home Aqueous Film Forming Foam (AFFF) cont. n Suitable for subsurface injection n Can be used as Class A foam if needed n Effective only on hydrocarbons

11 Home Alcohol Resistant AFFF n Same charcteristics as AFFF but can also be used on polar solvents!

12 Home Expansion Ratios n Low Expansion – up to 20:1 (we use 10:1) n Medium Expansion – :1 (Haz-Mat vapor mitigation) n High Expansion – :1 (Confined Space)

13 Home Types of Fuels n Hydrocarbons n Polar Solvents

14 HomeHydrocarbons n Products of crude oil n Do not mix with water n Gasoline, Diesel, JP8, Kerosene, Asphalt, Motor oils, Vegetable oil, and Animal Fat

15 Home Polar Solvents n Products of distillation n Easily mix with water n Ketones, Esters, Alcohol, Amine, MTBE

16 Home Foam Equipment n Eductors HLP-9 (in-line) PC-30A n Foam nozzles JS-10 PC-31 PC-50 PC-100 Task Force Tip Foam Adapter

17 HomeHLP-9 n In-line eductor n Works off of venturi effect n Large amount of friction loss n No more than 6 feet between eductor and concentrate surface n Pump at 200 psi

18 HomeHLP-9 n No more than 200 feet between eductor and nozzle

19 HomePC-30A n Utilized for Sub- Surface Injection

20 HomeJS-10 n 1-1/2 nozzle n 100 gpm at 100 psi

21 HomePC-31 n 2-1/2 nozzle n 310 gpm at 100 psi

22 HomePC-50 n This nozzle under ideal conditions is capable of delivering 500 gallons of finished foam solution per minute n It has a reach of 170 feet at 150 PSI

23 HomePC-100 n Capable of delivering 1000 gallons per minute of finished foam solution under ideal conditions n Has a reach of 190 feet at 150 PSI

24 Home Task Force Tip - Foam Adapter n Purpose is to provide additional foam as a master stream n Can be used on ground monitors or elevated master streams (ladder trucks)

25 Tactics

26 Home Establish an Excellent Water Supply!

27 HomeSolution

28 Size up n How large is the spill\fire? n What resources are needed?

29 Home Approach Scene n If possible approach from upwind

30 Home Application Techniques n Bounce off n Bank in n Rain down

31 Homeblanket n Minimum 4 blanket n If you must walk through blanket do not pick feet up!

32 Home

33 Chesapeakes First Foam Unit n Property of Shell n Utilized a dry powder hopper which worked off of a venturi effect n Carried A & B foam

34 Home Foam 35 n Donated by the Department of Civil Defense. n It carried an extinguishing agent called Purple K which is located in the center dome shaped container. n It also carried the A & B type foam powder.

35 Home Engine 6 n Chesapeake Fire Departments third foam unit n Manufactured in house by CFD Personnel

36 Home Foam 12 n Foam Pem-Fab / National Foam n Designed with a balanced pressure system n 1000 GPM pump n 275 gal. Water tank n 128 GPM Foam pump with 550 gallons of Universal Gold n Currently assigned in the Western Branch area

37 Home Engine 1 n 1993 Pierce / National Foam Unit n Has a balanced pressure system n 2000 GPM water pump with 500 gallons water n 250 GPM foam pump with 500 gallons Universal Gold

38 Home Foam 1 n 1973 Chevrolet n Carries 1400 gallons of XL-3 type foam n Also carries a limited supply of foam appliances

39 Home Chesapeakes Foam n Universal Gold 3% AR-AFFF n XL-3 Fluoroprotein

40 Home Engine Company n 15 gal. Universal Gold 3% n HLP9 in-line eductor n JS-10 foam nozzle


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