TB 4 Gasoline Tank Truck-Trailer Incidents

Question 1

California consumers use over ____ gallons of gasoline and ___ gallons of diesel fuel every day.

Answer 1

43 million / 8 million

Question 2

Tank trucks transport approximately ___ of all the fuels used by vehicles.

Answer 2

90%

Question 3

These trucks feed a distribution network of over ____ retail service stations by traveling over a vast network of freeways, highways and city streets.

Answer 3

9,500

Question 4

The LAFD also regulates flammable and combustible liquid tank trucks in ____ of the Fire Code.

Answer 4

Div. 38

Question 5

When a tank truck and/or trailer accident occurs, a complex incident is created: one with a potential for fire, rescue, evacuation and hazardous materials operations, as well as ____.

Answer 5

environmental concerns

Question 6

Primary consideration of emergency responders shall be the ____, property, and the environment, in that order.

Answer 6

preservation of life

Question 7

The trucks we all recognize as gasoline tankers are officially classified by the Federal Motor Carrier Standards as ____ for trucks/tanks built from 1967-1993 and ____ for trucks/tanks built from 9/1/93 to present.

Answer 7

MC306 / DOT406

Question 8

Gasoline Tank Truck
They are designed to carry flammable and combustible liquids, alcohol, Class B Poisons and liquid food products with vapor pressures less than ____.

Answer 8

3 p.s.i

Question 9

The tank portion of the vehicle is considered a ____ Tank.

Answer 9

Non-Pressure Liquid

Question 10

Single tank truck with two axles or three axles. Capacities are ____ and ____ gallons respectively.

Answer 10

3,000 / 5,000

Question 11

Tank tractor with a semi-trailer connected together by a fifth-wheel. One tank approximately 40 feet long with a capacity of _____.

Answer 11

9,000 gallons

Question 12

Tank truck pulling a two-axle trailer: Each truck and trailer tank is approximately ___ long. The capacity of the truck tank is ____ and the trailer tank is ____ for a total of 9000 gallons.

Answer 12

20 feet / 4,200 gallons / 4,800 gallons

Question 13

Features of non-pressure liquid tanks :
______, Elliptical shaped tank ends, Longitudinal roll-over protection along the top of the tank, ________, Vapor recovery plumbing on right rear of tank (not present on all vehicles), ____ assemblies and vapor recovery valves on top of the truck for each compartment

Answer 13

Aluminum tank / Plumbing and valves for off-loading located under the tank / Manhole

Question 14

Most tanks are made of aluminum. The tank wall is thickest at the bottom (____) and gradually gets thinner as you progress toward the top of the tank.

Answer 14

3/16”

Question 15

This is done to minimize tank weight, thereby ____ product carrying capacity.

Answer 15

maximizing

Question 16

It is designed to carry the liquid load only in the ___ position.

Answer 16

upright

Question 17

If the hole is illegally plugged, the void space could contain up to ____ of product.

Answer 17

200 gallons

NEVER REMOVE ANY PLUG.

Question 18

Even when full, each compartment will have a ___ above the product to allow for expansion.

Answer 18

vapor space

Question 19

Opening a valve is accomplished by overcoming ____ utilizing air, hydraulic or mechanical power.

Answer 19

heavy spring pressure

Question 20

All external piping is constructed with ____.

Answer 20

built-in shear points

Question 21

The shear points are pre-engineered points designed to ____ impact, before damage can occur to internal valves and plumbing.

Answer 21

fail upon

Question 22

These incidents may involve up to _____ of flammable liquids.

Answer 22

9000 gallons

Question 23

Gasoline Tanker Incident – No Leak: Treat all incidents as if there is a leak until it is confirmed there is _____.

Answer 23

not a leak

Question 24

Construction and design features allow for early tank failure at relatively low temperatures with pressure relief devices designed to maintain_____. ( BLEVE should NOT be a consideration).

Answer 24

3 to 5 psi

Question 25

Gasoline Tanker Incident – Leak, No Fire: • Eliminate potential ignition sources a minimum of ____ from the spill.

Answer 25

100 feet

Question 26

For tire fires use a minimum 1 1/2” hose line with a minimum of ___. • Consider vehicle fuel tanks as a secondary hazard.

Answer 26

125 gpm

Question 27

Fires involving large quantities of hydrocarbon products are very dynamic and generally overwhelm the capabilities of the first arriving fire unit(

Answer 27

DO NOT USE PLAIN WATER UNLESS IT IS TO PERFORM A RESCUE

Question 28

Determine amount of foam concentrate required for incident. • Use alcohol resistant aqueous film forming foam – AR AFFF. • Plan for a ____ supply of concentrate for suppression operations • Plan for an extra ____ supply of concentrate for foam blanket maintenance.

Answer 28

15-minute

Question 29

100 square feet of burning liquid would require ____ of concentrate at 3% and approximately 1000 gallons of water, with 1000 square feet of burning liquid requiring 312 gallons of concentrate and over 10,000 gallons of water respectively.

Answer 29

31 gallons

Question 30

LAFD foam tenders carry ____ of class B foam

Answer 30

1000 gallons

Question 31

Aluminum tanks will melt at about ___ and the exposed fuel will burn at the liquid level.

Answer 31

1,200°F

Question 32

Keep in mind, the rule of thumb is gasoline will burn at the rate of about ___ per hour, vertically, regardless of the surface area.

Answer 32

one foot

Question 33

For example, if the fuel that is burning is 4 feet deep in a tank you can expect it to burn for about ___ before it burns itself out

Answer 33

4 hours