FIREFIGHTING PROCEDURES - HAZMAT 1 ALTERNATIVE FUELS

Question 1

LIST THE PROPERTIES OF LIQUID PETROLEUM (LPG/LP)

Answer 1

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)

Question 2

HOW MUCH HEAVIER IS LPG TO AIR?

Answer 2

1.5 - 2X HEAVIER THAN AIR

Question 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?

Answer 3

1000 FT FROM THE FRONT AND REAR

500 FT FROM THE SIDES

Question 4

TRUE/FALSE

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

Answer 4

FALSE

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

Question 5

WHAT EXTINGUISHERS ARE EFFECTIVE ON SMALL LPG FIRES?

Answer 5

• PORTABLE DRY CHEMICAL EXTINGUISHERS
• CARBON DIOXIDE EXTINGUISHERS

++APPLY AT THE BASE OF THE FIRE++

Question 6

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

Answer 6

VAPOR AREA

Question 7

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

Answer 7

FROST LINE ON TANK SOMETIMES SHOW THE LIQUID LEVEL

Question 8

WHAT IS EFFECTIVE IN DISPERSING LP GAS VAPORS?

Answer 8

WATER SPRAY

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

Question 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?

Answer 9

HEAVY STREAMS OF WATER SHOULD BE USED FROM A SAFE DISTANCE

Question 10

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

Answer 10

1075 DIAMOND PLACARD

Question 11

TRUE/FALSE

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

Answer 11

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.

Question 12

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

Answer 12

270 TIMES

Question 13

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

Answer 13

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

Question 14

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

Answer 14

1971 DECAL

Question 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.

Answer 15

FALSE

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

Question 16

LIST THE PROPERTIES OF COMPRESSED NATURAL GAS (CNG):

Answer 16

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

Question 17

TRUE/FALSE

CNG CYLINDERS ARE SUBJECT TO FAILURE AND BLEVE.

Answer 17

FALSE

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

Question 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?

Answer 18

1/4 TURN

Question 19

WHAT ARE THE PROPERTIES OF METHANOL?

Answer 19

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

Question 20

THE FLASH POINT OF METHANOL IS?

Answer 20

54 DEGREES F

Question 21

WHAT ARE THE HEALTH HAZARDS OF METHANOL?

Answer 21

• 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

Question 22

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

Answer 22

ALCOHOL FOAM.

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

Question 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?

Answer 23

ALCOHOL (GREEN BAND)

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

Question 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?

Answer 24

BELOW 20%