Utility Emergencies

Question 1

Electric, cable, conduit, lighting cable utility marking color is

Answer 1

Red

Question 2

Gas, oil, steam, petroleum, or gaseous material utility marking color is

Answer 2

Yellow

Question 3

Communications, alarm, or signal lines, cable or conduit utility marking color is

Answer 3

Orange

Question 4

Potable water utility marking color is

Answer 4

Blue

Question 5

Reclaimed water, irrigation and slurry lines utility marking color is

Answer 5

Purple

Question 6

Sewer and drain lines utility marking color is

Answer 6

Green

Question 7

Temporary survey markings utility marking color is

Answer 7

Pink

Question 8

Proposed excavation utility marking color is

Answer 8

White

Question 9

A simple hydrocarbon consisting of carbon and hydrogen

Answer 9

Methane

Question 10

The weight of a given volume of gas compared to the weight of the same amount of air at the same temperature and pressure is

Answer 10

Vapor density

Question 11

A pungent oderant that is added to natural gas as a safety precaution after it is received at the distribution site is

Answer 11

Mercaptan

Question 12

The expansion ratio of liquefied natural gas to a gas is what

Answer 12

600:1

Question 13

Gas lines typically have operating pressures of _____ to _____ pounds per square inch (PSI)

Answer 13

0.25 ; 55

Question 14

Gas transmission lines range in size from ____ to _____ and have pressures up to 450psi

Answer 14

6” ; 30”

Question 15

Pipeline markers show what

Answer 15

The approximate location

Question 16

Signs on pipeline markers list what

Answer 16

The commodity transported, the name of the pipeline company, a telephone number

Question 17

A pipeline sign that is and orange triangle on a stick is used for what

Answer 17

Aerial Reconnaissance

Question 18

Gas shut off for leaks should be done in what order

Answer 18

1 At the appliance
2 At the meter
3 At the curb box

Question 19

For gas leaks the first arriving unit should position where

Answer 19

No closer than 100 feet and upwind if possible

Question 20

For gas leaks where should all incoming fire apparatus other than the first arriving unit position

Answer 20

Minimum distance of 300 feet

Question 21

For gas leaks units should not position where

Answer 21

front of, to the rear of, or beside a building involved in a gas leak event

Question 22

If a break in a gas line is over _____ inch diameter the incident should be upgraded to a hazmat response

Answer 22

2 inch

Question 23

The initial alarm assignment for outside gas leaks should consist of a minimum of

Answer 23

1 engine company
1 truck or rescue

Question 24

Fire department personnel shall ensure no persons enter a trench deeper than _____ feet that is not shored

Answer 24

5 feet

Question 25

To protect the utility company workers, units should position upwind with what

Answer 25

A 20lb dry chem extinguisher and a charged hoseline when necessary

Question 26

The DOT ERG suggests an evacuation distance of _____ feet for gas leaks

Answer 26

330 feet

Question 27

In situations where you cannot find the leak you can do what to help pinpoint the source in piping and meters

Answer 27

Use a soapy water spray

Question 28

In extreme cases the fire department can perform clamping or crimping a leak. This should only be done for what size lines

Answer 28

3/4" or smaller

Question 29

The initial alarm assignment for inside gas leaks should consist of the following

Answer 29

2 engine companies 1 truck or rescue 1 BC

Question 30

The gas regulator takes street pressure of up to _____ PSI and steps it down to somwehere between ________

Answer 30

40 PSI ; 1/2-1/4 PSI

Question 31

In newer occupancies because of the longer distance for gas to go it may be at a pressure of what

Answer 31

2-5PSI

Question 32

Two basic types of gas meters are

Answer 32

Inside & Outside

Question 33

Is a fossil fuel that is found mixed with natural gas and petroleum deposits

Answer 33

Propane

Question 34

Propane has an expansion ratio of

Answer 34

270:1

Question 35

The vapor density of propane is

Answer 35

1.56 so it sinks

Question 36

DOT states a person with a normal sense of smell should be able to detect a concentration in air of what

Answer 36

20% of the LEL

Question 37

The relief valve of a propane tank is designed to operate and release pressure when the internal pressure exceeds what

Answer 37

250 psig

Question 38

Is formed by the incomplete combustion of the fossil fuels

Answer 38

Carbon Monoxide (CO)

Question 39

At incidents where an individual is in a vehicle that has downed power lines you should stay how far away

Answer 39

30 feet

Question 40

Pole numbers have two lines that are what

Answer 40

Top line is the map grid for the pole Bottom line is the specific pole #

Question 41

To be proactive for underground electric vaults crews can do what

Answer 41

Ventilate while waiting for the power company

Question 42

Firefighters should stay clear of manhole covers over underground electrical vaults as they have been known to blow off and flay as far as what

Answer 42

150 feet

Question 43

For water emergencies the main supply valve is typically found where

Answer 43

In the basement or utility room