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CGFD > Brannigans Building Construction CH.7 Non-Fire Building Systems (PT.2) > Flashcards

Brannigans Building Construction CH.7 Non-Fire Building Systems (PT.2) Flashcards

1
Q

in a hydraulic elevator, pressurized fluid moves

A

piston (a.k.a hydraulic jack)

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2
Q

under what phase, are elevators recalled to specific floor (USALLY FIRST FLOOR BY ACTIVATION OF SMOKE DETECTOR)

A

phase 1, doors remain open

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3
Q

during what elevator phase FF’s selects one of elevators in bank (group of elevators) to access upper floor and can control elevators using special key and set of procedures

A

phase 2 operation

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4
Q

T or F: often emergency generators are capable of running only a single elevator in each bank

A

true

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5
Q

As a result of the World Trade Center disaster on September 11th 2001 model building codes were modified to include two particularly important Provisions for elevators in new high-rise buildings

A

Occupant evacuation elevators and fire service access elevators

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6
Q

Occupant evacuation elevators and fire service access elevators both require

A

-Smoke barrier enclosed lobbies
-direct access to a fire rated stairwell
-elevator system monitoring in fire Command Center
-standby power

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7
Q

Use for occupant evacuation prior to phase 1 operation of elevator (automatic recall)

A

Occupant evacuation elevators (phase 3 operation)

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8
Q

Occupant evacuation elevators are intended for self evacuation of occupants in buildings more than 420 ft in height as an alternative to an extra mandated stairwell in the building known as

A

Phase 3 operation

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9
Q

These elevators have special protection against water penetration and a two-way Communication System between Lobby and fire Command Center; firefighters can recall these elevators from fire Command Center

A

Occupant evacuation elevators

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10
Q

Fire service access elevators are found in new buildings more than how many feet in height?

A

120 ft in height

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11
Q

Fire service elevator lobbies are a minimum of 150 ft^2 in area and must have what in the fire rated stairwell immediately adjacent to the lobby

A

Class one hose Outlet in fire rated stairwell

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12
Q

Where are elevator power controls usually located for hydraulic elevators and for electric elevators?

A

First floor for hydraulic elevators
top floor for electric elevators

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13
Q

usually metal bars, Used to prevent occupants of an elevator that is stuck between floors from opening car and Shaft doors and falling down Elevator Shaft below

A

Elevator door restrictors

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14
Q

Elevator door restrictors and gauge when elevator cab is located where in landing Zone?

A

18 in above or below Landing Zone

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15
Q

True or false: elevator keys typically do not bypass elevator door restrictors

A

True

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16
Q

An electric motor-driven chain system which individually cast aluminum steps with attached roller wheels are moved in a continuous loop rail system

A

Escalators

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17
Q

The chain and the handrail of an escalator have their own

A

Drive gear

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18
Q

The overall steel frame that supports the escalator is called a

A

Truss

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19
Q

Use a series of flat metal plates (pallets) or synthetic (rubber) belts as the walking surface

A

Moving sidewalks

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20
Q

Switches located at the top and bottom of an escalator that will stop it but will not remove power from the system

A

Emergency stop switches

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21
Q

To remove the power from an escalator use the main disconnect switch/button typically located near

A

Motor, under inspection plate at top of escalator

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22
Q

Sprinklers are rarely found near escalators but may sometimes find

A

Smoke detectors or line type heat detectors

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23
Q

ASHRAE

A

American Society of heating refrigerating and air-conditioning engineers

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24
Q

Heart of refrigeration system; fluid that has ability to expand and contract absorbing and releasing heat to and from surrounding environment

A

Refrigerant

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25
Q

Refrigerant gas is pressurized to high pressure at

A

Compressor

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26
Q

Refrigerant gas under high pressure and temperature releases heat to surroundings area at

A

Condenser

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27
Q

Where is the refrigerant allowed to expand and in doing so lowered in terms of pressure and temperature

A

Expansion valve

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28
Q

When refrigerant moves onto this step its coolness/coldness reduce temperature of surrounding area creating desired cool temperature

A

Evaporator

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29
Q

Refrigerant move through closed loop system starting at compressor and moving on to

A

-Condenser
-expansion valve
-evaporator

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30
Q

Cooler storage temperature (for storing Foods)

A

32F to 65F

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31
Q

Chill rooms temperature (for curing meat)

A

16 to 35*F

32
Q

Freezer or holding room temperatures (for storing frozen foods)

A

10 TO 5*F

33
Q

Sharp freezer temperature (for initial freezing and normal freezing)

A

35 to 0*F

34
Q

Refrigerants such as freon (banded many years ago) are under great scrutiny because

A

Effects on ozone depletion and their contribution to global warming

35
Q

New refrigerant have very short atmospheric times which has led to refrigerants being more

A

Flammable

36
Q

ASHRE developed a system of refrigerant classification that brings together both what using number and letter system

A

Flammability and toxicity

37
Q

Refrigerant classification letter and number refer to what?

A

Letter= toxicity
Number= flammability

38
Q

Refrigerant classification letter A & B stand for

A

A = lower toxicity
B= higher toxicity

39
Q

Refrigerant classification numbers 1-3 stand for

A

1= do not propagate Flame
2= low flammability
3= High flammability

40
Q

The level of flammability of refrigerant is based upon what?

A

Flame velocity

41
Q

Isobutane and Propane possess low toxicity and are highly flammable are classified as

A

A3

42
Q

Carbon dioxide used as a refrigerant is classified as

A

A1

43
Q

Ammonia given both its toxicity and flammability is classified as

A

B2L

44
Q

Contain requirements to address emergency situations for leaks in refrigeration systems that use flammable or toxic refrigerants

A

Model fire codes such as international fire code & NFPA 1 fire code handbook

45
Q

For refrigeration systems model fire codes require what that will automatically shut down compressors and move refrigerant from high pressure zone to low pressure Zone as well as flaring systems to burn off flammable refrigerants

A

Automatic emergency pressure control systems

46
Q

Refrigerant leak alarm and detection systems and dedicated emergency ventilation systems are required by

A

Fire codes

47
Q

Some cold storage facilities and ice hockey arenas have returned to using what liquid refrigerant

A

Ammonia

48
Q

Shipped as a non flammable material but is flammable with the flammable range of 16-25%

A

Ammonia

49
Q

Install to dump ammonia from refrigeration system in event of emergency such as fire threatening refrigeration system or ammonia gas releasing from brake and system and collecting in building creating an explosive situation or toxic atmosphere

A

Ammonia diffusion system

50
Q

Diffusion systems of ammonia consist on high and low pressure side of refrigeration system which terminate where

A

Specially designed and properly labeled fire department control box on outside of building

51
Q

Fire Department control box for ammonia will typically have

A

Pressure gauges and Equalization valves and emergency switch to shut down all compressors

52
Q

What must be provided for each pound of ammonia

A

Permanent water supply capable of providing at least 2 gallons

53
Q

What allows fire department to pump directly into ammonia diffusion system

A

FDC

54
Q

Work as a mixing vessel for ammonia (water storage tank or water basin)

A

Diffuser

55
Q

After water and ammonia are mixed in diffuser it is discharged to

A

Sewer system for disposal

56
Q

Medical gases supplied by medical gas piping systems include

A

Oxygen (oxidizer)
Nitrous oxide (oxidizer)
Nitrogen
Carbon dioxide
Helium
medical air (for patients)
Instrument air (for surgical equipment)
Ethylene (FLAMMABLE GAS)

57
Q

Medical gas piping systems used bulk storage containers with the medical gases stored either

A

Under pressure or cryogenically

58
Q

Medical gas distribution piping system typically made of

A

Copper

59
Q

Medical distribution piping have what to isolate specific portions of system

A

Shut off valves

60
Q

In facilities that use large quantities of oxygen what is installed

A

Cryogenic storage systems

61
Q

Often use high-pressure cylinders and portable cryogenic containers

A

Gas is needed in smaller quantities

62
Q

Restaurant have switched to using what system for use and their carbonated beverages

A

Large-capacity carbon dioxide storage systems

63
Q

What are the three components of newer carbon dioxide storage systems

A

Large-capacity stainless steel tanks (300-750 gal)
Piping system
Phil box on the outside of building

64
Q

What is required for carbon dioxide storage system since it is an asphyxiant and leaking can be deadly

A

Carbon dioxide detection and alarm systems

65
Q

Heavier than air gas and we’ll collect and low points such as basements

A

Carbon dioxide

66
Q

Emergency generators need a power supply to start them mainly use

A

Lead acid batteries

67
Q

Even after a sectional isolation valve is closed a water leak in pipe will continue to flow as long as

A

There is water in portion of system Beyond valve; consider using hazardous materials patching to stop flow

68
Q

Other than very minor sewage backups all sewer piping breaks and backups inside a building require

A

Full PPE including SCBA

69
Q

Unless natural gas leak quickly identify it is usually best to shut off gas to a building or unit at

A

Main service valve

70
Q

Odorant placed in natural gas to alert individuals to a leak can be stripped from gas as it travels Underground through soil

A

Mercaptan

71
Q

In some cases turning off the power to a stalled elevator car and then turning it back on again will allow car to move normally to a desired location this procedure show only be used

A

once

72
Q

When possible remove trapped individuals from a stalled traction elevator car to the lobby floor above using

A

Roof hatch (minimizes possibility of falling down shaft)

73
Q

reports of a leak involving a refrigeration system should initiate an immediate response of

A

Hazardous materials team

74
Q

at a refrigeration system leak initial efforts involving full PPE equipped FF’s should be focused on

A

Evacuation of occupants and surrounding exposures

75
Q

If an ammonia diffusion system is to be used to send diluted ammonia refrigerant through sanitary sewer system who must be notified

A

Affected sewage treatment plant

76
Q

Given High Vapor density of carbon dioxide a leak from a beverage system can collect in rooms and in low points what is required for any response involving the systems

A

SCBA and aggressive ventilation for below grade areas

77
Q

Newest type of power supply

A

Energy storage systems

CGFD (16 decks)

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