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LT Test 2023 > Utilities Manual > Flashcards

Utilities Manual Flashcards

1
Q

An average rate of exposure over the course of an 8hr work shift is _____. (pg.4) FC

A

Time Weighted Average (TWA)

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2
Q

American Public Works Association (APWA) color code for gas, oil, steam, petroleum, or gaseous materials is _____? (pg.6) FC

A

Orange

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3
Q

What is the number for miss utility? (pg.7) FC

A

1-800-552-7001 or 811

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4
Q

_____ is a pungent odorant that is added to natural gas as a safety precaution after its received at the distribution site. (pg.8) FC

A

Mercaptan

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5
Q

Natural gas has a vapor density of .55 making it _____ than air and causing it to _____. (pg.8) FC

A

Lighter / Rise

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6
Q

The flammable range of natural gas is between __ - __ percent. (pg.8) FC

A

5 – 15

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7
Q

The proper sequence for shutting off the utility in a leak or fire is.. (pg.12) FC

A

At the appliance / At the meter / At the curb

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8
Q

Roughly, the ignition temperature for natural gas is about _____. (pg.8) FC

A

1200 Degrees F

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9
Q

Engine Companies shall position the apparatus_________ and no closer than ____ feet and a minimum distance of ____ feet for all other incoming units on gas leak. (pg.13) FC

A

Prior to and upwind / 100ft / 300ft

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10
Q

Electric, cable, conduit, and lighting cable is what color? (pg.6) FC

A

Red

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11
Q

If the break is in a gas line that is reported to be over 2inch in diameter, the incident should __________. (pg.14) FC

A

Be upgraded to a hazardous materials response

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12
Q

Clamping or crimping a leak should only be considered on lines that are ___ or smaller. (pg.16) FC

A

¾ in

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13
Q

What is the primary tactic used to remove gas in a gas leak? (pg.20) FC

A

Natural Ventilation

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14
Q

Most commercial and all residential appliances use gas at a pressure of ___ to ___ psi. (pg.21) FC

A

½ to ¼

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15
Q

Propane density is 1.56, making it _____ than air. (pg.25) FC

A

Heavier

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16
Q

CO has LEL of ___ and UEL of ___. (pg.28) FC

A

12.8% and 74%

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17
Q

TWA of CO is ___ppm over and ___ hour span, and ___ppm over ___hour. (pg.28) FC

A

35ppm / 8hr 50ppm / 1hr

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18
Q

Electricity has what two basic properties? (pg.31) FC

A

Voltage and Current

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19
Q

The most hazardous conditions involving power lines are where the lines ______. (pg.36) FC

A

Do not come in contact with the ground

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20
Q

Current is measured in ____ and is the amount of electricity flowing through a wire or conductor. (pg.31) FC

A

Amps or amperes

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21
Q

What is a BLEVE? -SB

A

Boiling Liquid Expanding Vapor Explosion. (p. 2)

22
Q

) ________ means something is designed to be incapable of producing heat or spark sufficient to ignite an explosive atmosphere. -SB

A

Intrinsically Safe. (p. 2)

23
Q

How many color codes does the APWA have to identify underground utilities? -SB

A
  1. (p. 6)
24
Q

What color denotes an underground gas line? -SB

A

Yellow. (p. 6)

25
Q

What color denotes an underground electric line? -SB

A

Red. (p. 6)

26
Q

In Virginia, MISS Utility can also be accessed by dialing _____. -SB

A

8 1 1. (p. 7)

27
Q

Having a vapor density of .55, methane (natural gas) will _____ when escaping. -SB

A

Rise. (p.8)

28
Q

Natural gas in its pure state is colorless and odorless. __________ is a pungent odorant that is added as a safety precaution after it is received at the distribution site. -SB

A

Mercaptan. (p. 8)

29
Q

The flammable range for natural gas is between ____ and ___. -SB

A

5%; 15%. (p. 8)

30
Q

The ignition temperature for natural gas is about ______. -SB

A

1200 ° F. (p. 8)

31
Q

The expansion ratio of liquified natural gas to a gas is _____. -SB

A

600:1. (p. 8)

32
Q

Gas lines can generate _______ to _______ volts of static electricity. -SB

A

2,000; 24,000. (p. 8)

33
Q

Markers show the pipelines _______ location; not its ____ location. -SB

A

Approximate; Exact. (p. 10)

34
Q

The proper sequence for shutting off the utility in either a leak or fire situation is? -SB

A

At the appliance, at the meter, at the curb. (p. 12)

35
Q

For outside gas leaks and other outside gas emergencies, engine companies shall position apparatus ______ and ______ of the hazard area.

A

Prior to; upwind. (p. 13)

36
Q

The general rule for apparatus positioning is no closer than _____ for the first arriving unit and a minimum distance of _______ for all other incoming fire apparatus. -SB

A

100 feet; 300 feet. (p. 13)

37
Q

What are the resources for the initial alarm on an outside gas leak? -SB

A

1 engine, 1 Truck or rescue. (p. 14)

38
Q

In most cases if the leak is prior to a shut off, one of the best courses of action is _____. -SB

A

No action. (p. 15)

39
Q

True or False: To quickly control a gas leak, you should identify and close any and all appropriate street valves. -SB

A

False. DO NOT OPERATE ANY STREET VALVES. May result in another emergency remote from the scene. (p. 15)

40
Q

The initial alarm for an inside gas leak is ________. -SB

A

2 engines, 1 truck or rescue, 1 BC. (p. 19)

41
Q

The key to turning off gas services in any structure is locating the ______. -SB

A

Regulator. (p. 21)

42
Q

Operating valves located in street boxes and manholes may actually ______ to customers’ service. -SB

A

Increase Pressure. (p. 23)

43
Q

Propane has an expansion ratio of _____. -SB

A

270:1. (p. 25)

44
Q

________ is formed by the incomplete combustion of the fossil fuels- gas, oil, coal, and wood. -SB

A

Carbon Monoxide. (p. 28)

45
Q

The resources for a Carbon Monoxide emergency is________. -SB

A

1 engine company, 1 EMS unit. (p. 28)

46
Q

During a CO emergency, any person who enters the structure above ___ shall have full turnout gear, including SCBA donned. -SB

A

35 ppm. (p. 30)

47
Q

Electricity has two basic properties: ______ and ______. -SB

A

Voltage; Current. (p. 31)

48
Q

In electricity there is _______ which has the potential for making you a part of a circuit. -SB

A

Step potential. (p. 32)

49
Q

The most hazardous conditions involving power lines are where the lines _____________. -SB

A

Do Not come in contact with the ground. (p. 36)

50
Q

Fire Dept personnel _______ the scene of any wires down incident in which the wires are actively arcing. -SB

A

Should not leave. (p. 36)

51
Q

What to the pole numbers mean on utility poles? -SB

A

Top line is the map grid; the second line is the specific pole number. (p. 36)

52
Q

An __________ is an intermediate space located between regular-use floors, commonly located in hospitals and laboratory-type buildings to allow space for the mechanical systems of the building. -SB

A

Interstitial Space. (p. 41)

LT Test 2023 (30 decks)

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