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Hazmat Tech > UTILITY manual > Flashcards

UTILITY manual Flashcards

1
Q

Many injuries and deaths were a result of?

A

Complacency and poor decision making

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2
Q

An automatic protection device that senses and interrupts distribution system faults

A

Recloser

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3
Q

The conductor part of transition leading from underground to over head may or may not include pothead

A

Riser

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4
Q

Electric service taken at less than 2,000 volts

A

Secondary

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5
Q

Process of opening switches or fuses to divide a circuit into sections to isolate the cause of the power outage.

Reduces impact of power outage to fewest customers*

A

Sectionalize

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6
Q

A quarter turn valve used to restrict or isolate the flow of liquid or gas in pipe

A

Stop-cock

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7
Q

Location which uses a collection of transformers to reduce voltage and circuit breakers to protect circuits

A

Substation

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8
Q

An electrical outage that lasts for more than two minutes

A

Sustained outage

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9
Q

A device for making, breaking, or changing connections

A

Switch

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10
Q

average exposure to contaminant or condition such as noise. Workers exposed without adverse effect over a period of 8hr day or 40hr week

A

TWA

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11
Q

Device which transforms electric energy from one voltage to another level

A

Transformer

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12
Q

High voltages between 60,000 and 500,000

A

Transmission

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13
Q

Abbreviation for Volt

A

V

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14
Q

A space underground for electric cables etc

A

Vault

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15
Q

Unit of measurement of electric potential

A

Volt

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16
Q

Flow of electric current across a gap between two conductors

A

Arc

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17
Q

A component that detects overload conditions and then disconnects

A

Breaker

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18
Q

A path through which electric current is intended to flow

A

Circuit

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19
Q

Abnormal electrical current

A

Fault

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20
Q

Melts and burns when specified value is exceeded

A

Fuse

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21
Q

Designed to be incapable of producing heat or spark sufficient to ignite

A

Intrinsically safe

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22
Q

Actions taken to reroute power

A

Isolate

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23
Q

Abbreviation for 1,000

A

K

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24
Q

Electrical outage less than 2 minutes

A

Momentary outage

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25
Q

Provides transition between underground cable to overhead lines or conductors

A

Pothead

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26
Q

2,000 to 50,000 volts to a distribution transformer

A

Primary

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27
Q

Chemicals with a narrow flammable range are ____ hazardous than those that have a broad flammable range.

A

Less

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28
Q

Chemicals with a flammable range in the higher percentages are generally ___ hazardous than those with low percentages

A

Less

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29
Q

TWA is an average rate of exposure over the course of

A

8 hour day - 40hr workweek

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30
Q

TWA levels are usually ___ than ceiling values

A

Lower

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31
Q

A vital resource that should be requested early on is

A

Assistance from the utility company

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32
Q

In order to reduce injury, death, damage to line, the Virginia state corporation commission approved The

A

American Public Works Association (APWA) color codes

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33
Q

Should supplement surface marks

A

Color coded vertical markers (temporary spikes or flags)

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34
Q

All markers and marks should indicate

A

Name, initials, logo of company and width of facility of greater than 2inches (50mm)

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35
Q

Marker may be as simple as

A

Color coded dash line

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36
Q

In areas of high traffic, the line may be

A

Off set with direction arrows

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37
Q

Electric, cable, conduit

A

Red

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38
Q

Gas oil, steam, gaseous material

A

Yellow

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39
Q

Communications, alarm, or signal lines

A

Orange

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40
Q

Potable water

A

Blue

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41
Q

Reclaimed water, irrigation, slurry lines

A

Purple

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42
Q

Sewer/drain lines

A

Green

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43
Q

Temporary survey lines

A

Pink

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44
Q

Proposed excavation

A

White

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45
Q

CI

A

CAST IRON

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46
Q

Copper

A

CPR

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47
Q

Ductile iron

A

DI

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48
Q

Plastic

A

PL

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49
Q

Polyvinyl chloride

A

PVC

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50
Q

Reinforced concrete

A

RFC

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51
Q

Steel cylinder concrete

A

SCC

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52
Q

Steel

A

STL

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53
Q

Terracotta

A

TC

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54
Q

Transite

A

TR

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55
Q

W/STL

A

Wrapped steel

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56
Q

Miss utility number

A

1-800-552-7001

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57
Q

Miss utility can be accessed by dialing

A

811

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58
Q

____ is a simple hydro carbon consisting of carbon and hydrogen

A

Methane

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59
Q

Carbon and hydrogen atoms joined together to make

A

Hydrocarbon

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60
Q

Vapor density is weight

A

Of air (1)

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61
Q

Vapor density of methane is

A

.55 less than 1 will rise

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62
Q

Methane or natural gas’s chemical abbreviation is

A

CH4

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63
Q

Although with a natural gas leak there will be no toxic components or health hazard, in heavy concentrations it will

A

Displace O2

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64
Q

Natural gas in its pure state is

A

Odorless and colorless

65
Q

Pungent odorant that is added as a safety component at the distribution site

A

Mercaptan

66
Q

Flammable range for methane is

A

5% to 15%

67
Q

Ignition temp for natural gas is

A

1200F

68
Q

The expansion ratio for CH4 is

A

600:1

69
Q

Gas lines have operating pressure of

A

.25 to 55

70
Q

Transmission lines range in size from 6” to 30” and have pressures up to

A

450psi

71
Q

Transmission lines can generate ___ to ___ volts of static electricity

A

2,000 to 24,000

72
Q

The largest network of energy pipelines of any nation in the world belong to

A

USA

73
Q

___ remain the safest, most efficient and economical way to move these natural resources

A

Pipelines

74
Q

Greatest risk to safe pipelines are accidental damage caused by

A

Excavation, construction

75
Q

Pipeline leak indicators

A

Hissing sound/roar

Unusual odor, dead or discolored vegetation, dirt being blown, water bubbling.

76
Q

Markers show the pipelines approximate

A

Location not the EXACT location

77
Q

Markers do not

A

Indicate how deep the pipeline is buried or how many lines are in the area

78
Q

Circular signs are located near

A

Roads, railroads, and along pipelines/right of ways

79
Q

Arrow looking marker is a

A

Pipeline casting vent

80
Q

To protect the pipeline from mechanical damage—— are installed at all major vehicular road and railroad crossings

A

Road castings

81
Q

These seals are intended to keep water out and provide ____

A

Electrical insulation

82
Q

____ ‘to ____ ‘max between PSI casting spacer

A

6-7

83
Q

PSI end seal - model ___ or ___

A

C or W

84
Q

___ vent pipes keep moisture from building in the air space between the casting and pipeline

A

Gooseneck vent

85
Q

____ has been recently used as alternative to black iron pipe that was a mainstay in construction

A

Flexible gas line

86
Q

Trade name for flexible gas line

A

CSST or corrugated stainless steel tubing. Trac pipe/ ward flex

87
Q

Historically residential gas lines were found at the entry points of the structure to the ____ and ____

A

Kitchen, laundry

88
Q

Due to flexible gas lines it is now much more popular to

A

Run lines in parts of the structure that would not previously of been used for

89
Q

Common damage to CSST of flexible gas lines come from

A

Punctures in the line from wall hangings

90
Q

Monitor for gas leaks with flexible gas lines at

A

Light switches, electrical outlets, void spaces

91
Q

Proper sequence for shutting off utility for a leak

A

At the appliance, meter, curb box

92
Q

Use ____ or ____ to shit off valves

A

Halligan or wrench

93
Q

When performing a shut off at the curb box use _____ sided wrench to remove the cover of street valve

A

Five sided wrench

94
Q

The valve to shut off is the one located ____ to the regulator

A

Prior

95
Q

____ meters are usually much larger and operate at higher pressures than residential meters

A

Commercial

96
Q

Dig around box with

A

Shovel

97
Q

Apparatus shall position.

A

Prior to and upwind of hazard area

98
Q

Apparatus no closer than ____ for the first arriving unit and a minimum distance of ____ for all other

A

100, 300

99
Q

Second engine on a gas leak should stage

A

At a hydrant outside the hot zone

100
Q

If a break in the line is reported to be over ____ inches in diameter the incident should be upgraded to a hazmat response

A

2 inches in diameter

101
Q

Initial alarm for outside gas leak not meeting hazmat response criteria

A

1 engine 1 truck or rescue

102
Q

First arriving unit shall, on an outside gas leak

A

Recon to find extent of leak

103
Q

First arriving officer on an outside gas leak is responsible for

A

Identifying a staging area away from hotzone

104
Q

Serious hazard during a leak is the

A

Static electricity up to 24,000 volts

105
Q

It is recommended that the FD ___ crimp or clamp leaks. Unless, life saving situation

A

Should not

106
Q

Most cases prior to shut off the best course of action is

A

No action, don’t cover any pipe that is leaking

107
Q

No persons enter a trench that is ___ that is not shored

A

5 ft

108
Q

To protect utility workers, units should position up wind with a

A

20 lb dry Chem and a charged hose line

109
Q

Street valves should

A

Not be used

110
Q

ERG suggest an evac distance of

A

330

111
Q

Crimping or clamping a leak should only be considered for lines that are

A

3/4 of an inch

112
Q

Several ft from leak, dig a hole to expose line away from any readings. Lines could be ____ deep

A

24inches deep

113
Q

Use grounding spray or ____ then safely clamp the line

A

Wet towel

114
Q

Bare steel diameters range from 3/4 of inch to 8 inches with pressures up to

A

60psi

115
Q

Wrapped steel maybe from 3/4 of inch to 20inches with pressure up to

A

1,440psi

116
Q

PVC or polyethylene pipe is susceptible to

A

Static electricity

117
Q

With a gas line on fire you should

A

Protect the exposures

118
Q

For burning gas meters ___ should be deployed on a wide fog pattern

A

Two hose lines

119
Q

Initial alarm for inside has leaks

A

2 engines one truck or rescue BC

120
Q

When IDLH atmosphere is identified an ____ shall be identified

A

Initial RIT AND POSSIBLE STRUCTURE RESPONSE

121
Q

Initial alarm for inside gas leak

A

2 engines, 1 truck or rescue 1 BC

122
Q

Tasks that should be completed by the assigned units

A

Evacuate citizens
Monitor atmosphere
Exposure protection
Hazard mitigation safely
Ventilation

123
Q

All ____ should be turned on before entering the IDLH

A

Intrinsically safe equipment

124
Q

Where concentrations are the highest, _____ should be started immediately.

A

Ventilation

125
Q

Secure _____ before operating the electric panel.

A

Generator

126
Q

Upper stories, attic, and cocklofts need to be monitored due to

A

Vapor density of natural gas .55

127
Q

Personnel encountering an odor should assign a resource to investigate

A

The roof, hvac

128
Q

The regular to a meter takes street pressure of 40psi to

A

1/2, 1/4 psi prior to the meter

129
Q

In older houses gas lines in occupied areas will be no more than

A

1/2 psi after the regulator

130
Q

In new occupancies, gas lines leaving the main regulator are ___ to ___ psi

A

2-5psi

131
Q

There are two types of meters

A

Inside, outside

132
Q

The piping vent will be within

A

5 feet of the vent on an inside wall

133
Q

If the screen becomes blocked to an outside vent it has its own

A

Blow out relief

134
Q

The meter valve is a ____ turn in the pipping prior to the regulator

A

Quarter turn

135
Q

When the shit off on an inside residential installation cannot be operated, the gas should be turned off at the

A

Curb box

136
Q

Firefighters shall not attempt to shut off gas service by operating the

A

Street boxes or manholes

137
Q

A street box is located

A

Out in the street and should not be operated by FD

138
Q

A curb box is located

A

Between the street and the residence

139
Q

Look for ____ colored lines to find curb box

A

Yellow

140
Q

Confirm gas is being shut off by noting

A

Extinguishment of blue flames or checking meter flow

141
Q

Curb box is usually at a depth of

A

2’ to 3

142
Q

Propane is a ____ mixed with natural gas and petroleum deposits in rocks deep under ground

A

Fossil fuel

143
Q

Propane has a. Expansion ratio of

A

270:1

144
Q

Vapor density of propane is

A

1.56 heavier than air

145
Q

One gallon of liquid propane weighs

A

4.23 pounds

146
Q

Propane has an LEL of ____ and a UEL of ______

A

2.3, 9.5

147
Q

Propane in its natural form is

A

Colorless and odorless

148
Q

Propane has an ignition temp between

A

920F and 1,120F

149
Q

A person with a normal sense of smell should be able to detect a concentration in air of ___% pf the LEL

A

20

150
Q

Mercaptan added at a rate of _____per 10,000 gallons of liquid propane

A

1lb

151
Q

Specific gravity of propane (weight in water)

A

0.504

152
Q

Cloud that is visible is ____ a product of but condensed moisture in the air that is ___ by the leaking product

A

Not, cooled

153
Q

_____ should be used to determine if gas escaping and caused the problem

A

Earth probes

154
Q

Propane being ____ heavier than air

A

1 1/12

155
Q

_____ hoselines should be deployed with ___ fog pattern to disperse vapors

A

Two 1 3/4 lines, narrow fog

156
Q

Gas leak with nothing found, the source of odor may be

A

J p or a trap in a drain building up sewer gas

157
Q

____ or extreme flooding could cause gas leaks

A

Water main breaks

158
Q

NEVER ______ has meter fires but protect exposures

A

Extinguish

Hazmat Tech (19 decks)

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