Utility Emergencies

Question 1

If any doubt concerning your ability to manage a incident involving gases or leaks request

Answer 1

HAZMAT Unit

Question 2

Methane has a vapor density of __ making it _____ than air

Answer 2

.55. Lighter

Question 3

A note of caution is that natural gas in transmission pipelines and rail cars is _____ odorized, with ______

Answer 3

Not, Mercaptan

Question 4

The flammable range for methane is _ % to __%

Answer 4

5% to 15%

Question 5

ignition temperature for natural gas is about ______

Answer 5

1200 degreees

Question 6

Markers show the pipeline’s approximate location

Answer 6

Not its exact location

Question 7

When shutting off the gas at the appliance, the shut off valve will be a quarter turn,

Answer 7

just prior to the regulator and appliance

Question 8

outside gas leaks and other outside gas emergencies, engine companies shall position the apparatus

Answer 8

prior to and upwind

Question 9

general rule for apparatus positioning is no closer than ___
For the first arriving unit and a minimum distance of __

Answer 9

100 feet
300 feet

Question 10

During gas emergencies the second engine should stage at ____ outside the hot zone

Answer 10

The hydrant

Question 11

Gas line over ___inches in diametershould be upgraded to an HAZMAT event

Answer 11

2 inches

Question 12

During a outside gas leak what is dispatched

Answer 12

1 engine
1 truck or rescue

Question 13

Ensure who should be called enroute to a gas emergency

Answer 13

Gas Company

Question 14

If gas is leaking prior to a shut off and no gas is entering any structure the best course of action is

Answer 14

No action

Question 15

fire department personnel shall ensure no persons enter a trench deeper than ___ that is not shored

Answer 15

5 Feet

Question 16

To protect the utility company workers, units should position upwind with a ______ and a _____

Answer 16

20 LB dry chemical
Charged hose line

Question 17

All non-essential personnel, including firefighters and civilians, shall be kept out of the hot zone. The DOT Emergency Response Guide (ERG) suggests an evacuation distance ____

Answer 17

330 ft

Question 18

Gas lines are buried around ___ below the surface

Answer 18

24”

Question 19

Gas lines have a _____ _____ ____ over them for gas company can detect them.

Answer 19

Yellow coated wire

Question 20

If a gas line is on fire the best procedure is to _____

Answer 20

Protect exposures

Question 21

If a gas meter is on fire the best place to shut off is the ______

Answer 21

Curb valve

Question 22

Consideration must be given to a potential ignition source being an auxiliary generator. If the power to a structure is shut off at the electric panel this action may cause the generator to operat

Answer 22

Secure the generator prior to operating the electric panel.

Question 23

A gas regulator takes street pressure of up to __ psi and steps it down to somewhere of ___

Answer 23

40 psi
1/2 psi

Question 24

What are the two types of gas meters ____ and ____

Answer 24

Outside and inside

Question 25

All inside or enclosed gas installations are required to have the regulator vented to the outside via piping and must be within _ of the vent on an inside wall

Answer 25

5 feet

Question 26

When the gas meter is involved, and access to the meter shut off cannot be accessed, the best place to shut off the gas is at the

Answer 26

Curb

Question 27

Propane has an expansion ratio of

Answer 27

270:1

Question 28

Carbon Monoxide Emergencies dispatch

Answer 28

1 engine company
1 EMS unit

Question 29

Firefighters called to the scene of any CO alarm or smell of natural gas should dismount from the apparatus with full turnout gear and air packs in place. If the detection/monitoring equipment shows a reading of __ ppm should retreat from the structure and dawn SCBA

Answer 29

35

Question 30

Ground transformer
After power is removed it is recommended to extinguish any remaining fire with

Answer 30

dry chemical or CO2 extinguishers,