1. Firefighting Foam

2. WHY USE FOAM????
MANY AGENTS CAN EXTINGUISH A CLASS “B” FIRE, HOWEVER, FOAM PROVIDES:
SUPPRESSION OF FLAMMABLE VAPORS
PREVENTION OF FUEL IGNITION, OR RE-IGNITION
POST FIRE SECURITY

3. TYPES OF INCIDENTS THAT MAY REQUIRE FOAM
FUEL SPILLS (VEHICLE/AIRCRAFT)
CHEMICAL SPILLS PAINT, MOTOR OIL, LAQUER THINNER, AND OTHER FLAMMABLE LIQUIDS FOUND IN RETAIL STORES

4. How Firefighting Foam works!
SEPARATES
CREATES A BARRIER BETWEEN THE FUEL AND THE FIRE

5. LOWERS THE TEMPERATURE OF THE FUEL AND ADJACENT SURFACES
COOLS
LOWERS THE TEMPERATURE OF THE FUEL AND ADJACENT SURFACES

6. SUPPRESSES THE RELEASE OF FLAMMABLE VAPORS
SMOTHERS
SUPPRESSES THE RELEASE OF FLAMMABLE VAPORS

7. PENETRATES
LOWERS THE SURFACE TENSION OF WATER AND ALLOWS IT TO PENETRATE DEEP-SEATED FIRES

8. CLASS B FIRES TWO BASIC CATEGORIES
HYDROCARBON FUELS
CRUDE OIL
FUEL OIL
GASOLINE
BENZINE
NAPHTHA
JET FUEL
KEROSENE

9. POLAR SOLVENTS ALCOHOLS ACETONE LAQUER THINNER KETONES ESTERS ACIDS
HYDROPHILIC (MIX WITH WATER)

10. FOAM TERMINOLOGY
FOAM CONCENTRATE
FOAM PROPORTIONER
FOAM SOLUTION
FOAM

11. FOAM CONCENTRATE MUST MATCH FUEL TO WHICH THEY ARE APPLIED
CLASS A-WILDLAND/STRUCTURAL
CLASS B-FLAMMABLE/COMBUSTIBLE LIQUIDS

12. AFFF APPLIED USING STANDARD FOG NOZZLE AIR ASPIRATING FOAM NOZZLE
MAXIMUM EXPANSION
MATCH PROPORTIONER WITH PERCENTAGE NUMBER ON CONTAINER

13. FOAM PROPORTIONING
INDUCTION
INJECTION
BATCH MIXING
PREMIXING

14. OPERATION E2805 SELECT FOAM % OPEN WATER VALVE CLOSE BYPASS VALVE
OPEN FOAM VALVE
SET PUMP DISCHARGE PRESSURE TO 200 PSI
FRONT CROSSLAY

15. OPERATION E2808 SELECT FOAM % OPEN WATER VALVE OPEN EDUCTOR VALVE
OPEN FOAM VALVE
SET PUMP DISCHARGE PRESSURE TO 200 PSI
#1 CROSSLAY

16. OPERATION E2812 SELECT FOAM % PULL WATER HANDLE PULL EDUCTOR HANDLE
PULL FOAM HANDLE
SET PUMP TO 200 PSI

17. FLUSH!FLUSH!FLUSH! REDUCE PRESSURE TO 100 PSI PULL FLUSH HANDLE
ROTATE FOAM SELECTOR
FLUSH FOR 3 MINUTES

18. IN-LINE EDUCTOR OPERATION

19. VENTURI PRINCIPLE
AS WATER AT HIGH PRESSURE PASSES THROUGH A RESTRICTED OPENING, IT CREATES A LOW-PRESSURE AREA ON THE OUTLET SIDE OF THE EDUCTOR.THIS LOW PRESSURE AREA CREATES SUCTION BECOUSE OF THE VENTURI EFFECT.THE EDUCTOR PICKUP TUBE IS CONNECTED TO THE EDUCTOR AT THIS LOW PRESSURE POINT.

20. VENTURI PRINCIPLE CONT.
A PICKUP TUBE SUBMERGED IN THE FOAM CONCENTRATE DRAWS CONCENTRATE INTO THE WATER STREAM, CREATING A FOAM WATER SOLUTION.

21. IN LINE EDUCTOR OPERATION
1 3/4” HANDLINE MUST NOT EXCEED
150’ FROM THE EDUCTOR.
APPLIES TO ANY SETTING ON EDUCTOR.
NO KINKS IN HANDLINE.
NOZZLE BALE OPEN FULLY.
DO NOT INSERT PICKUP TUBE INTO FOAM CONCENTRATE UNTIL YOU ACHIEVE 200 PSI.
FLUSH EDUCTOR WITH FRESH WATER!!!!

22. IN LINE EDUCTORS LOCATION
E2805 PUMP OP COMPARTMENT
E2812 PUMP OP COMPARTMENT

23. FOAM APPLICATION TECHNIQUES
ROLL-ON
BANK-DOWN
RAIN-DOWN

24. DO NOT PLUNGE!!!!!

25. ROLL ON

26. BANK DOWN

27. RAIN DOWN

28. HEALTH RISKS MILD IRRITANT (SKIN/EYES)
VAPORS MAY BE HARMFUL IF INGESTED OR INHALED

29. ENVIRONMENTAL IMPACT
IN A WATERWAY, THE REDUCTION IN OXYGEN CAN CAUSE DAMAGE BY KILLING FISH AN OTHER AQUATIC CREATURES

30. SAFETY!!!!!!! PPE SCBA DON’T TURN YOUR BACK SHUFFLE YOUR FEET
RE-APPLY OFTEN
SAFETY OFFICER
BACKUP LINES
WIND DIRECTION

31. MAINTENANCE
FLUSH ALL DEVICES AND HANDLINES WITH FRESH WATER FOR A MINIMUM OF THREE MINUTES!!!!!
RE-SUPPLY FOAM TANKS ASAP.