UTILITY manual Flashcards
1
Q
Many injuries and deaths were a result of?
A
Complacency and poor decision making
2
Q
An automatic protection device that senses and interrupts distribution system faults
A
Recloser
3
Q
The conductor part of transition leading from underground to over head may or may not include pothead
A
Riser
4
Q
Electric service taken at less than 2,000 volts
A
Secondary
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
6
Q
A quarter turn valve used to restrict or isolate the flow of liquid or gas in pipe
A
Stop-cock
7
Q
Location which uses a collection of transformers to reduce voltage and circuit breakers to protect circuits
A
Substation
8
Q
An electrical outage that lasts for more than two minutes
A
Sustained outage
9
Q
A device for making, breaking, or changing connections
A
Switch
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
11
Q
Device which transforms electric energy from one voltage to another level
A
Transformer
12
Q
High voltages between 60,000 and 500,000
A
Transmission
13
Q
Abbreviation for Volt
A
V
14
Q
A space underground for electric cables etc
A
Vault
15
Q
Unit of measurement of electric potential
A
Volt
16
Q
Flow of electric current across a gap between two conductors
A
Arc
17
Q
A component that detects overload conditions and then disconnects
A
Breaker
18
Q
A path through which electric current is intended to flow
A
Circuit
19
Q
Abnormal electrical current
A
Fault
20
Q
Melts and burns when specified value is exceeded
A
Fuse
21
Q
Designed to be incapable of producing heat or spark sufficient to ignite
A
Intrinsically safe
22
Q
Actions taken to reroute power
A
Isolate
23
Q
Abbreviation for 1,000
A
K
24
Q
Electrical outage less than 2 minutes
A
Momentary outage
25
Provides transition between underground cable to overhead lines or conductors
Pothead
26
2,000 to 50,000 volts to a distribution transformer
Primary
27
Chemicals with a narrow flammable range are ____ hazardous than those that have a broad flammable range.
Less
28
Chemicals with a flammable range in the higher percentages are generally ___ hazardous than those with low percentages
Less
29
TWA is an average rate of exposure over the course of
8 hour day - 40hr workweek
30
TWA levels are usually ___ than ceiling values
Lower
31
A vital resource that should be requested early on is
Assistance from the utility company
32
In order to reduce injury, death, damage to line, the Virginia state corporation commission approved The
American Public Works Association (APWA) color codes
33
Should supplement surface marks
Color coded vertical markers (temporary spikes or flags)
34
All markers and marks should indicate
Name, initials, logo of company and width of facility of greater than 2inches (50mm)
35
Marker may be as simple as
Color coded dash line
36
In areas of high traffic, the line may be
Off set with direction arrows
37
Electric, cable, conduit
Red
38
Gas oil, steam, gaseous material
Yellow
39
Communications, alarm, or signal lines
Orange
40
Potable water
Blue
41
Reclaimed water, irrigation, slurry lines
Purple
42
Sewer/drain lines
Green
43
Temporary survey lines
Pink
44
Proposed excavation
White
45
CI
CAST IRON
46
Copper
CPR
47
Ductile iron
DI
48
Plastic
PL
49
Polyvinyl chloride
PVC
50
Reinforced concrete
RFC
51
Steel cylinder concrete
SCC
52
Steel
STL
53
Terracotta
TC
54
Transite
TR
55
W/STL
Wrapped steel
56
Miss utility number
1-800-552-7001
57
Miss utility can be accessed by dialing
811
58
____ is a simple hydro carbon consisting of carbon and hydrogen
Methane
59
Carbon and hydrogen atoms joined together to make
Hydrocarbon
60
Vapor density is weight
Of air (1)
61
Vapor density of methane is
.55 less than 1 will rise
62
Methane or natural gas’s chemical abbreviation is
CH4
63
Although with a natural gas leak there will be no toxic components or health hazard, in heavy concentrations it will
Displace O2
64
Natural gas in its pure state is
Odorless and colorless
65
Pungent odorant that is added as a safety component at the distribution site
Mercaptan
66
Flammable range for methane is
5% to 15%
67
Ignition temp for natural gas is
1200F
68
The expansion ratio for CH4 is
600:1
69
Gas lines have operating pressure of
.25 to 55
70
Transmission lines range in size from 6” to 30” and have pressures up to
450psi
71
Transmission lines can generate ___ to ___ volts of static electricity
2,000 to 24,000
72
The largest network of energy pipelines of any nation in the world belong to
USA
73
___ remain the safest, most efficient and economical way to move these natural resources
Pipelines
74
Greatest risk to safe pipelines are accidental damage caused by
Excavation, construction
75
Pipeline leak indicators
Hissing sound/roar
Unusual odor, dead or discolored vegetation, dirt being blown, water bubbling.
76
Markers show the pipelines approximate
Location not the EXACT location
77
Markers do not
Indicate how deep the pipeline is buried or how many lines are in the area
78
Circular signs are located near
Roads, railroads, and along pipelines/right of ways
79
Arrow looking marker is a
Pipeline casting vent
80
To protect the pipeline from mechanical damage—— are installed at all major vehicular road and railroad crossings
Road castings
81
These seals are intended to keep water out and provide ____
Electrical insulation
82
____ ‘to ____ ‘max between PSI casting spacer
6-7
83
PSI end seal - model ___ or ___
C or W
84
___ vent pipes keep moisture from building in the air space between the casting and pipeline
Gooseneck vent
85
____ has been recently used as alternative to black iron pipe that was a mainstay in construction
Flexible gas line
86
Trade name for flexible gas line
CSST or corrugated stainless steel tubing. Trac pipe/ ward flex
87
Historically residential gas lines were found at the entry points of the structure to the ____ and ____
Kitchen, laundry
88
Due to flexible gas lines it is now much more popular to
Run lines in parts of the structure that would not previously of been used for
89
Common damage to CSST of flexible gas lines come from
Punctures in the line from wall hangings
90
Monitor for gas leaks with flexible gas lines at
Light switches, electrical outlets, void spaces
91
Proper sequence for shutting off utility for a leak
At the appliance, meter, curb box
92
Use ____ or ____ to shit off valves
Halligan or wrench
93
When performing a shut off at the curb box use _____ sided wrench to remove the cover of street valve
Five sided wrench
94
The valve to shut off is the one located ____ to the regulator
Prior
95
____ meters are usually much larger and operate at higher pressures than residential meters
Commercial
96
Dig around box with
Shovel
97
Apparatus shall position.
Prior to and upwind of hazard area
98
Apparatus no closer than ____ for the first arriving unit and a minimum distance of ____ for all other
100, 300
99
Second engine on a gas leak should stage
At a hydrant outside the hot zone
100
If a break in the line is reported to be over ____ inches in diameter the incident should be upgraded to a hazmat response
2 inches in diameter
101
Initial alarm for outside gas leak not meeting hazmat response criteria
1 engine 1 truck or rescue
102
First arriving unit shall, on an outside gas leak
Recon to find extent of leak
103
First arriving officer on an outside gas leak is responsible for
Identifying a staging area away from hotzone
104
Serious hazard during a leak is the
Static electricity up to 24,000 volts
105
It is recommended that the FD ___ crimp or clamp leaks. Unless, life saving situation
Should not
106
Most cases prior to shut off the best course of action is
No action, don’t cover any pipe that is leaking
107
No persons enter a trench that is ___ that is not shored
5 ft
108
To protect utility workers, units should position up wind with a
20 lb dry Chem and a charged hose line
109
Street valves should
Not be used
110
ERG suggest an evac distance of
330
111
Crimping or clamping a leak should only be considered for lines that are
3/4 of an inch
112
Several ft from leak, dig a hole to expose line away from any readings. Lines could be ____ deep
24inches deep
113
Use grounding spray or ____ then safely clamp the line
Wet towel
114
Bare steel diameters range from 3/4 of inch to 8 inches with pressures up to
60psi
115
Wrapped steel maybe from 3/4 of inch to 20inches with pressure up to
1,440psi
116
PVC or polyethylene pipe is susceptible to
Static electricity
117
With a gas line on fire you should
Protect the exposures
118
For burning gas meters ___ should be deployed on a wide fog pattern
Two hose lines
119
Initial alarm for inside has leaks
2 engines one truck or rescue BC
120
When IDLH atmosphere is identified an ____ shall be identified
Initial RIT AND POSSIBLE STRUCTURE RESPONSE
121
Initial alarm for inside gas leak
2 engines, 1 truck or rescue 1 BC
122
Tasks that should be completed by the assigned units
Evacuate citizens
Monitor atmosphere
Exposure protection
Hazard mitigation safely
Ventilation
123
All ____ should be turned on before entering the IDLH
Intrinsically safe equipment
124
Where concentrations are the highest, _____ should be started immediately.
Ventilation
125
Secure _____ before operating the electric panel.
Generator
126
Upper stories, attic, and cocklofts need to be monitored due to
Vapor density of natural gas .55
127
Personnel encountering an odor should assign a resource to investigate
The roof, hvac
128
The regular to a meter takes street pressure of 40psi to
1/2, 1/4 psi prior to the meter
129
In older houses gas lines in occupied areas will be no more than
1/2 psi after the regulator
130
In new occupancies, gas lines leaving the main regulator are ___ to ___ psi
2-5psi
131
There are two types of meters
Inside, outside
132
The piping vent will be within
5 feet of the vent on an inside wall
133
If the screen becomes blocked to an outside vent it has its own
Blow out relief
134
The meter valve is a ____ turn in the pipping prior to the regulator
Quarter turn
135
When the shit off on an inside residential installation cannot be operated, the gas should be turned off at the
Curb box
136
Firefighters shall not attempt to shut off gas service by operating the
Street boxes or manholes
137
A street box is located
Out in the street and should not be operated by FD
138
A curb box is located
Between the street and the residence
139
Look for ____ colored lines to find curb box
Yellow
140
Confirm gas is being shut off by noting
Extinguishment of blue flames or checking meter flow
141
Curb box is usually at a depth of
2’ to 3
142
Propane is a ____ mixed with natural gas and petroleum deposits in rocks deep under ground
Fossil fuel
143
Propane has a. Expansion ratio of
270:1
144
Vapor density of propane is
1.56 heavier than air
145
One gallon of liquid propane weighs
4.23 pounds
146
Propane has an LEL of ____ and a UEL of ______
2.3, 9.5
147
Propane in its natural form is
Colorless and odorless
148
Propane has an ignition temp between
920F and 1,120F
149
A person with a normal sense of smell should be able to detect a concentration in air of ___% pf the LEL
20
150
Mercaptan added at a rate of _____per 10,000 gallons of liquid propane
1lb
151
Specific gravity of propane (weight in water)
0.504
152
Cloud that is visible is ____ a product of but condensed moisture in the air that is ___ by the leaking product
Not, cooled
153
_____ should be used to determine if gas escaping and caused the problem
Earth probes
154
Propane being ____ heavier than air
1 1/12
155
_____ hoselines should be deployed with ___ fog pattern to disperse vapors
Two 1 3/4 lines, narrow fog
156
Gas leak with nothing found, the source of odor may be
J p or a trap in a drain building up sewer gas
157
____ or extreme flooding could cause gas leaks
Water main breaks
158
NEVER ______ has meter fires but protect exposures
Extinguish
