Presentation is loading. Please wait.

Presentation is loading. Please wait.

Firefighting Foam. WHY USE FOAM???? MANY AGENTS CAN EXTINGUISH A CLASS “B” FIRE, HOWEVER, FOAM PROVIDES:  SUPPRESSION OF FLAMMABLE VAPORS  PREVENTION.

Similar presentations


Presentation on theme: "Firefighting Foam. WHY USE FOAM???? MANY AGENTS CAN EXTINGUISH A CLASS “B” FIRE, HOWEVER, FOAM PROVIDES:  SUPPRESSION OF FLAMMABLE VAPORS  PREVENTION."— Presentation transcript:

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 COOLS LOWERS THE TEMPERATURE OF THE FUEL AND ADJACENT SURFACES

6 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.


Download ppt "Firefighting Foam. WHY USE FOAM???? MANY AGENTS CAN EXTINGUISH A CLASS “B” FIRE, HOWEVER, FOAM PROVIDES:  SUPPRESSION OF FLAMMABLE VAPORS  PREVENTION."

Similar presentations


Ads by Google