Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Boiler > boiler > Flashcards

boiler Flashcards

1
Q

A special engineer is expected to be competent, take charge of, and be responsible for the safe operation and maintenance of all classes of boilers not more than how many horse power

A

50

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A gauged glass can be attached to a what column, which is attached to a boiler

A

water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

in accordance with the statues of MN, one boiler horsepower for conventional boilers equals to

A

10 sq ft of boiler heating surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

in accordance with the statues of MN, one boiler horsepower for steam-coil type generators is equal to what

A

5 sq ft of boiler heating surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

when the boiler heating surecae cannot be discerned, the boiler horsepower shall be determined by dividing the Btu by

A

67,000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

in accoidance wiht the statues of the MN each electril boiler horsepower is equal to kilowatts

A

10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

a log book must be maintained in the boiler room by the

A

chief engineer or the operating engineer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

the shift engineer of a high pressure boiler plant of over 500 hp must stay within of the boiler room at all times during shift

A

500 ft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

a high pressure boiler must have 2 mean of feed water supply if it exceeds Hp

A

50

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

when used, a quick opening blowdown valve must be located

A

neared to the boiler (open 1st close last)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

the min passing score of the engineers license exam is

A

70%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

licenses granted must be displayed in

A

a conspicuous place in the engine or boiler room

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

for the purpose of the boiler and pressure vessel statues a year is considered to be at least

A

2000 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

sensible heat is

A

able to cause change of temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

heat that brings about a change of state without causing a change in temperature is

A

latent heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

in a boiler, heat is transferred from the burning fuel to the water by

A

convection
conduction
radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

convection is a method of heat transfer where the movement of the fluids is done solely to

A

flow of fluids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Large high pressure utility boilers use

A

balanced draft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

when heat transfer occurs by traveling though metal, it is known as

A

conduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

an example of the transfer of heat by radiation is

A

the heating effect of the sun on the earth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

the document governing boiler fittings and valves is the code

A

ASME

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

the best method of testing a low water fuel cut off is to

A

lower the water level in the boiler to the level where the burner should cut out

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

rules traveling the construction of power boilers are set out in

A

ASME Code section 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

an easy of determining if a safety valve on a boiler as sufficient capacity is to

A

perform an accumulation test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

an exapmle of a nondestructive test on a boiler is

A

an X ray test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

the material used most for piping is

A

low carbon steel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

in a natural draft furnace, the amount of draft is affected by the

A

height of the stack

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

a check valve is a valve that

A

allows flow in one direction only

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

expansion bends or joints are installed in piping systems to

A

allow for expansion and contraction of the piping with out causing damage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

the main purpose of installing insulaiton

A

prevent heat loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

the purpose of a steam trap is to

A

remove air and condensate from steam lines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

boiler stays

A

are used to support te tube sheet in a boiler

33
Q

hand hole and manhole openings

A

permit inspection, cleaning and repairs

34
Q

a LWFCO us used on a boiler to prevent

A

damage to the boiler from overheating

35
Q

the boilers heating surface

A

can be used to determine the boiler capacity

36
Q

with regard to steam boilers the letters HRT mean

A

Horizontal return tubular

37
Q

when hot combustion gases travel through boiler tubes that are surrounded by boiler water, the boiler is called

A

fire tube

38
Q

the 2 general designed of eclectic boilers are

A

electrode and resistance

39
Q

continous blowdown system are used in boiler

A

to help control; the dissolved solids concentrations

40
Q

a water tube boiler is a boiler that has

A

water on the inside of the tubes and hot has on the outside of the tubes

41
Q

The LWFCO is a device fitted to the boiler to shut off the

A

fuel supply to the burners when the water level in the boiler is low

42
Q

the purpose of spring in a safety valve is to

A

close the valve disc against the seat

43
Q

the safety valve test lever must not be used unless

A

the pressure is about 75% of valve popping pressure

44
Q

a siphon tube is necessary to

A

keep stream out of a bourdon tube

45
Q

a test connection between the siphon tube and the boiler pressure gauged is needed to

A

allow test equipment to be connected when checking the gauge for accuracy

46
Q

try cocks on a water column are used to

A

check the water level in the boiler

47
Q

a blowdown is performed to remove sludge from a boiler

A

bottm

48
Q

boiler baffles are used

A

to direct the fume gases through the boiler furnace

49
Q

the float chambers of the LWCO is frequently blown down to prevent the

A

float chamber from collecting sediment

50
Q

the feedwater line must contain

A

a check valve between a stop valve and the rest of the feed water line

51
Q

a bottom blowdown steam can be equipped with slow opening and quick opening calves, with the quick opening valve located

A

closest to the boiler and opened first

52
Q

a valve should be used if a valve is required in a steam line for throttling action

A

globe

53
Q

The cobustiable elements in fules are

A

carbon

hydrogen

54
Q

balck smoke can be caused by

A

insufficient combustion air

55
Q

is the flow of air or gases of combustion caused by a diffrence in pressure between 2 points

A

draft

56
Q

the main function of a gas burner is to

A

mix the gas with combustion air

57
Q

combustion is a

A

chemical combustion of the elements of fuel with oxygen

58
Q

modulating combustion control;s

A

regulate the briner firing rate

59
Q

the function of a flame failure device is to shut off the

A

fuel supply when the burner flame goes out

60
Q

a steam boiler operating control is used to control the

A

steam pressure in the boiler

61
Q

before filling a boiler with water the licensed engineer should ensure that

A

the vent has been left open

62
Q

in a deaerator, dissolved gases are removed from the water by

A

forcing the water through organic screens and venting the gases to the atmosphere

63
Q

the correct procedure for blowing down a high pressure boiler is to open

A

the quick opening valve 1st and close last

64
Q

boiler water wit ha pH of 6 is considered

A

alkaline

65
Q

the pH of a boiler should be kept at

A

10.0-11.5

66
Q

foaming in a boiler may be caused by

A

a high concentration of dissolved solids in the boiler water

67
Q

is any solid impurity in water that cannot be dissoleved

A

suspended matter

68
Q

the maximum pressure allowed in a low pressure hot water boiler is no more than

A

160 psig

69
Q

a hydrostatic test is mandatory requirement when anew boiler is installed in MN. the test pressure must not exceed times the maximum allowable working pressure

A

1.5

70
Q

the evaporative capacity of a steam boiler is stated a pound pf steam per

A

hour

71
Q

the most important valve on a boiler is the valve

A

safety

72
Q

a cross tee fitting us used on a boiler column connections to

A

access the connecting piping for cleaning

73
Q

improper drainage of steam lines could

A

result in water hammer

74
Q

a person holding a current special engineers license could be in a charge of or a shift engineer in what size plant

A

High/low pressure boiler not to exceed a total of 50 boiler hp or a shift engineer in a 100 hp plant

75
Q

a tri-indicator could be found on a

A

hot water boiler

76
Q

the tri-indicator would inform the boiler operator of

A

twmp of water
pressure of water is psig
altitude of water in ft

77
Q

what is the destructive force in a steam or hot water boiler explosion

A

the instant release of energy stored in the water as heat

78
Q

tri cocks or gauges cocks are used on as team boiler to indicate

A

the true water level inside the boiler

79
Q

an aqua stat is used on a

A

low limit/low fire hold control, 3 way valves, run around pump

Boiler (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions