FIREFIGHTING PROCEDURES - HAZMAT 1 ALTERNATIVE FUELS Flashcards Preview

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Flashcards in FIREFIGHTING PROCEDURES - HAZMAT 1 ALTERNATIVE FUELS Deck (24):
1

LIST THE PROPERTIES OF LIQUID PETROLEUM (LPG/LP)

LPG IS:
-NON-TOXIC AND NON-POISONOUS HOWEVER SLIGHTLY ANESTHETIC
-ASPHYXIATION CAN OCCUR DUE TO O2 DISPLACEMENT
-ODORLESS
-FLAMMABLE
-HEAVIER THAN AIR (1.5 - 2X HEAVIER)

2

HOW MUCH HEAVIER IS LPG TO AIR?

1.5 - 2X HEAVIER THAN AIR

3

AT A LPG TANKER FIRE HOW FAR SHOULD YOU KEEP EVERYONE NOT ENGAGED IN OPERATIONS AWAY FROM THE FRONT & REAR OF THE TANK & HOW FAR FROM THE SIDES OF THE TANK?

1000 FT FROM THE FRONT AND REAR

500 FT FROM THE SIDES

4

TRUE/FALSE

AT A LPG LEAK WITH FIRE THE FIRST ARRIVING UNITS SHOULD ALWAYS EXTINGUISH THE FIRE THAN STOP THE LEAK.

FALSE

++HAZMAT 1++
1.4.1 DO NOT EXTINGUISH THE FIRE UNTIL THE LEAK HAS BEEN STOPPED, EXCEPT UNDER EXTREMELY UNUSUAL CONDITIONS

5

WHAT EXTINGUISHERS ARE EFFECTIVE ON SMALL LPG FIRES?

-PORTABLE DRY CHEMICAL EXTINGUISHERS
-CARBON DIOXIDE EXTINGUISHERS

++APPLY AT THE BASE OF THE FIRE++

6

AT A LPG TANK FIRE, WHERE DOES TANK FAILURE USUALLY OCCUR?

VAPOR AREA

7

LOOKING AT A LPG TANK FIRE, HOW WILL UNITS KNOW WHERE THE LIQUID LEVEL IS?

FROST LINE ON TANK SOMETIMES SHOW THE LIQUID LEVEL

8

WHAT IS EFFECTIVE IN DISPERSING LP GAS VAPORS?

WATER SPRAY

++HAZMAT 1++
1.5.2 WATER SPRAY IS EFFECTIVE IN DISPERSING LP GAS VAPOR.

9

AS THE INCIDENT COMMANDER AT A LP GAS LEAK WITHOUT FIRE, FIRST ARRIVING UNITS HAVE TRIED UNSUCCESSFULLY TO DISPERSE THE LP GAS VAPOR WITH THE USE OF A WATER SPRAY. WHAT SHOULD YOU INSTRUCT THE MEMBERS TO DO NEXT?

HEAVY STREAMS OF WATER SHOULD BE USED FROM A SAFE DISTANCE

10

WHAT DECAL WILL TIP YOU OFF THAT A VEHICLE IS POWERED BY PROPANE?

1075 DIAMOND PLACARD

11

TRUE/FALSE

THE POSSIBILITY OF A PROPANE CYLINDER "BLEVE"-ING ARE SMALL.

FALSE

++HAZMAT 1++
2.4.3 THERE IS A GREAT POSSIBILITY THAT A CYLINDER INVOLVED IN A FIRE WILL "BLEVE". A BLEVE CAN OCCUR IN A MATTER OF MINUTES. A SATISFACTORY PERFORMANCE OF A RELIEF VALVE CAN NOT PREVENT A BLEVE.

2.4.4 AN IMPACT FAILURE OF A CYLINDER IN A TRANSPORTATION ACCIDENT CAN ALSO CAUSE A BLEVE.

12

HOW MANY TIMES WILL ONE CUBIC FOOT OF PROPANE LIQUID EXPAND AS A GAS?

270 TIMES

13

WHAT ARE THE 3 AREAS OF EXPOSURE DURING A VEHICLE LEAK OR FIRE IN A PROPANE (LPG) SYSTEM (PROPANE FUELED VEHICLE)?

1. ENGINE COMPARTMENT
2. FUEL LINE FROM TANK TO AUTOMATIC SHUTOFF VALVE
3. TANK AREA

14

HOW CAN UNITS IDENTIFY A VEHICLE POWERED BY COMPRESSED NATURAL GAS?

1971 DECAL

15

TRUE/FALSE

THE 1971 DECAL FOUND ON A VEHICLE POWERED BY COMPRESSED NATURAL GAS IS A UNIVERSAL DECAL. VEHICLES FROM OTHER STATES AND COUNTRIES POWERED BY CNG WILL HAVE THIS PLACARD ON THE REAR BUMPER.

FALSE

++HAZMAT 1++
3.2.1 NOTE:
THERE MAY BE SOME STATES THAT DO NOT REQUIRE CNG POWERED VECHILES TO HAVE ANY WARNING PLACARD.

16

LIST THE PROPERTIES OF COMPRESSED NATURAL GAS (CNG):

CNG IS:
-FLAMMABLE
-NON TOXIC, ASPHYXIATION CAN OCCUR DUE TO O2 DISPLACEMENT
-LIGHTER THAN AIR (2/3 AS HEAVY)
-COMPOSED OF 95% METHANE AND 5% OTHER GASES

17

TRUE/FALSE

CNG CYLINDERS ARE SUBJECT TO FAILURE AND BLEVE.

FALSE

++HAZMAT 1++
3.4.3 CNG CYLINDERS ARE SUBJECT TO FAILURE BUT NOT TO BLEVE'S.

18

A VEHICLE POWERED BY (CNG) COMPRESSED NATURAL GAS WILL HAVE AN EMERGENCY SHUT OFF ON THE OUTSIDE OF THE VEHICLE. HOW MANY TURNS DOES IT TAKE TO SHUT OFF THIS VALVE?

1/4 TURN

19

WHAT ARE THE PROPERTIES OF METHANOL?

METHANOL IS:
-HIGHLY VOLATILE FLAMMABLE LIQUID
-FLASH POINT OF 54 DEGREES F.
-SLIGHTLY HEAVIER THAN AIR
-BURNS CLEAN (LITTLE SMOKE) MAKING IT DIFFICULT TO SEE IN BRIGHT SUNLIGHT

20

THE FLASH POINT OF METHANOL IS?

54 DEGREES F

21

WHAT ARE THE HEALTH HAZARDS OF METHANOL?

-EYE AND SKIN IRRITANT
-INHALATION AT HIGH CONCENTRATIONS CAN PRODUCE DRUNKENNESS, DROWSINESS, BLURRED VISION, UNCONSCIOUSNESS OR DEATH
-EFFECTS MAY BE DELAYED 24 HOURS OR LONGER

22

WHAT TYPE OF FOAM WOULD BE CORRECT TO USE ON METHANOL?

ALCOHOL FOAM.

++HAZMAT 1++
4.4.2 METHANOL IS DESTRUCTIVE TO ORDINARY FOAM. ALCOHOL TYPE FOAM MUST BE USED.

23

ENGINE 307 RESPONDS TO A INCIDENT IN WHICH THE HEADS UP OFFICER DETERMINES THAT METHANOL IS BURNING. THE ENGINE STRETCHES A FOAM LINE AND IS ABOUT TO SUPPLY THE EDUCTOR WITH AFFF FOAM. THE OFFICER IMMEDIATELY STOPS THEM BECAUSE HE KNOW THAT METHANOL IS DESTRUCTIVE TO ORDINARY FOAM. WHICH FOAM SHOULD HE INSTRUCT THEM TO USE?

ALCOHOL (GREEN BAND)

++HAZMAT 1++
4.4.2 METHANOL IS DESTRUCTIVE TO ORDINARY FOAM. ALCOHOL TYPE FOAM MUST BE USED.

24

APPLICATION OF LARGE AMOUNTS OF WATER WILL DILUTE THE METHANOL RENDERING IT NON-FLAMMABLE, HOW MUCH OF THE CONCENTRATION OF METHANOL MUST BE REDUCED TO BE EFFECTIVE?

BELOW 20%

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