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bioler test > leo boiler study guide 1st grade license > Flashcards

leo boiler study guide 1st grade license Flashcards

1
Q

a rise in chimney temp

A

a broken baffle in water tube boiler causes

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2
Q

refers to the carrying of water slugs into the steam line

A

what is carry over

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3
Q

two main steam stop valves

A

Boilers in battery equipped with manholeopenings must have _

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4
Q

first , last

A

when blowing down a boiler, the quick opening valve should be open______and close______

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5
Q

a watertube boiler with more that one drum in which the tubes connect the drums

A

Bent-tube boiler

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6
Q

regulate the high and low firing rates of the burner

A

the purpose of the modulating pressure control is to

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7
Q

firetube, watertube, cast iron sectional

A

what are the types of boilers

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8
Q

occurs when two forces of equal intensity act parallel to each other but opposite direction

A

shear stress

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9
Q

12”

A

a minimum of _______ shall be maintained between the bottom of a scoth marine or locomotive-type boiler mud rim or wet bottom to the foundation or floor

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10
Q

controls the rate of combustion determining the amount of fuel than can be burned

A

primary air

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11
Q

2nd grade

A

btuh limitation for output not exceeding 8,380,000 btus per hour

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12
Q

100,000

A

a therm has ____btus.

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13
Q

secure the feed water and fires to the boiler, allow the boiler to cool slowly and notify the chief eng.

A

if steam comes out of the bottom try cock, the boiler operator must

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14
Q

mixture, atomization, temperature and time

A

to obtain complete combustion of a fuel ____,____,____and _____are requiered

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15
Q

12 to 18 ps

A

a pressure reducing valve reduces incoming city water pressure approximately_______to______psi for used in hot water heating systems

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16
Q

removes oxygen and other noncondensable gases in a deaerating feed water heater

A

vent condenser

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17
Q

throttling purposes

A

globe valve is used for what purposes

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18
Q

to increase the life of the furnace refractory and increase the steaming capacity of the boiler

A

what is the purpose of the water walls

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19
Q

To distribute flame evenly

A

What is the purpose of a baffle wall in a boiler?

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20
Q

scale in the tubes

A

a direct cause of overheating the boiler tubes is

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21
Q

used on connections on a water column for inspection of steam and water lines to ensure they are clean and clear

A

Cross “t”

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22
Q

0 psi

A

water boils at 212 degrees at______psi,

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23
Q

3

A

During startup, the boiler vent shouldremain open until a pr

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24
Q

natural draft

A

the oldest form of draft used in a boiler is

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25
Q

gauge pressure plus atmospheric pressure

A

absolute pressure is equal to

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26
Q

incomplete combustion

A

carbon monoxide (co) in the flue gas indicates

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27
Q

type of gauge use for pressures over 250 psi

A

Flat gauge glass

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28
Q

to allow air into the boiler when dumping the boilerto allow air out of boiler when filling with wateror steaming a cold boiler

A

what is the purpose of the boiler vent

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29
Q

valve that requires five full turns of its handwheel to be fully open or closed

A

Slow-opening valve

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30
Q

before the main safety valves are opened

A

super heater safety valves are set to open

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31
Q

horizontal return tubular, scotch marine and vertical firetube boiler

A

3 types of firetube boilers are

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32
Q

250 psi

A

a gauge glass are used for temperatures up to and including

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33
Q

liquid filled bourdon tube, vapor pressure bourdon tube and filled bourdon tube

A

the 3 types of bourdon tube thermometers are

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34
Q

use only the theorical amount of air

A

perfect combustion

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35
Q

decrease boiler capacity

A

what happen if a broken baffle is not replace

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36
Q

5 years

A

if you dont renew your license how many years you have to take the exam again

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37
Q

is a pilot which burns during light off and while the main burner is firing and which is shut off during normal operation of the main burner

A

intermittent pilot

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38
Q

pressure at sea level 14.7 psi

A

Atmospheric Pressure

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39
Q

highest part of the steam sideof the boiler

A

The boiler vent is located atthe ___.

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40
Q

10

A

re-ending or piecing tubes or pipes in either fire-tube or water tubes boilers is permitted, provided the thickness of the tube or pipe has not been reduced by more than ______% from that r

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41
Q

a manometer

A

draft is measured with

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42
Q

b

A

flammable gasses what class of fire

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43
Q

corrosion

A

what will cause a safety valve to stick

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44
Q

the desired pressure at the burner

A

a gas pressure regulator is used to control

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45
Q

primary

A

Air that controls the rate ofcombustion is ___ air.

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46
Q

k

A

what class of fire for cooking oils and fats

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47
Q

600 psi

A

spring loaded pop type safety valves are used for pressures up to

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48
Q

there is 10 to 15 psi of steampressure on the boiler

A

The boiler vent is open whenwarming up a boiler until __

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49
Q

using soot blowers

A

Air heaters must be cleaned to ensuregood heat transfer by _

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50
Q

orsat gas analyzer

A

carbon dioxide, carbon monoxide and oxygen can be measure by

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51
Q

removed sludge and sediment

A

a steam boiler is blown down to

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52
Q

total heat in the steam

A

Enthalpy:

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53
Q

complete

A

carbon dioxide in the flue gas is sign of ______combustion

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54
Q

at ist lightest load

A

the best time to blow down a boiler is

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55
Q

the stop valve

A

in the main feedwater line, which valve is closest to the boiler

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56
Q

type of firetube boiler that consists of a drum suspended over the firebox

A

Horizontal return turbular boiler:

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57
Q

is the part of the boiler with water in one side and heat and gases of conbustion on other

A

describe the heating surface

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58
Q

hot water heating boiler designed to recover some of the heat energy that is normally discharge to the atmosphere through the stack by condensing the water vapor produced by burning fuel in the boiler

A

Condensing boiler:

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59
Q

os&y gate = outside stem and yoke

A

the main boiler stop valves must be ____valves

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60
Q

condition that occurs when the temperature in the open feedwater heater gets too high and the feedwater pump cannot deliver to the boiler

A

steam bound

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61
Q

15 psi to 25 psi

A

When warming up a boiler during cold plantstartup, the boile

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62
Q

straight tube and bent tube boiler

A

two types of water tube boilers are

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63
Q

by blowing down the control or evaporation testt

A

what are the ways to test the water fuel cutoff controls

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64
Q

national board inspection

A

repairs to all boilers and their appurtenaces shall conform as nearly as practicable to the requirements of the ______ ______ _______ code

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65
Q

occurs when two forces of equal intensity act form opposite directions pushing towards the center of an object

A

compressive stress

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66
Q

determine the btu content of natural gas

A

what is a gas calorimeter

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67
Q

firetube boiler

A

a scotch marine boiler is a _____boiler

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68
Q

is a high temperature thermocouple

A

what is a pyrometer

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69
Q

zeolite

A

what mineral is used to soften water

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70
Q

3rd grade

A

btuh limitation for output not exceeding 3,352,000 btus per hour

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71
Q

minimizing the total dissolved solids (tds) and surface impurities in the boiler water

A

foaming and carryover are prevented by

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72
Q

in the path of the gases of combustion

A

where are the baffles located

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73
Q

process whereby steam turns back to water after the removal of heat

A

condense

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74
Q

small access hole, smaller than a manhole, used for looking and reaching into the boiler shell during inspections

A

what is Handhole

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75
Q

outside stem and yoke

A

what does O S and Y mean when referring to a valve

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76
Q

highest part of the steam side of the boiler

A

the boiler steam pressure gauge must be connected to the ______of the boiler

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77
Q

gas company representative

A

Gas leaks should be locatedand repaired by a ___.

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78
Q

the boiler and the check valve

A

the boiler feedwater stop valve is between

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79
Q

forced and induced

A

mechanical draft can be classified as

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80
Q

firetube boilers

A

staybolts are most commonly found on

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81
Q

allow the setting to cool

A

before draining a boiler the operator should

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82
Q

unburned fuel

A

incomplete combustion

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83
Q

a blowdown tank

A

sludge and sediment from the mud drum of a boiler are discharged in to

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84
Q

.

A

ON HOT WATER HEATING BOILERS THAT REQUIRES FORCED CIRCULATION TO PREVENT OVER HEATING OF THE COILS OR TUBES SHALL HAVE A FLOW-SENSING DEVICE INSTALL IN THE OUTLET PIPING IN LIEU OF THE LOW

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85
Q

is draft pressure maintained at a constant pressure

A

what is balance draft

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86
Q

complete combustion

A

carbon dioxide (co2) in the flue gas indicates

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87
Q

feedwater using gases of combustion

A

an economizer is used in large boiler plants to heat

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88
Q

mixture; atomization;temperature; time

A

To obtain complete combustion of a fuel,___, ___, ___, and _

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89
Q

1880

A

in what year asme was founded

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90
Q

bop

A

btuh limitation for 1,004,400/1,676,000

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91
Q

150, 5

A

the blowdown tank should be of sufficient capacity to prevent discharging water over ____ degrees and or____ psi

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92
Q

70 up to 120 any thing less sweats, anything more the water gives up its air

A

what temperature of water is used during a hydrostatic test and why

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93
Q

air that controls the rate of combustion

A

primary air

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94
Q

above the feed water pump on the suction side

A

an open feedwater heater is located

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95
Q

E

A

electric boiler symbol

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96
Q

horizontal return tubular

A

HRT means

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97
Q

its the connection between the boiler and the chimney or stack

A

what is breeching

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98
Q

a mixture of water and flash steam

A

the bottom try cock when operated should blow

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99
Q

feed water line

A

a stop and check valve is install in the

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100
Q

8.3 lb/gal

A

water weights approximately

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101
Q

safe and efficient boileroperation

A

The primary function of a combustioncontrol is to ensure

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102
Q

govern and controls the construction and operation of boilers

A

what asme does

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103
Q

upper part of the steam andwater drum

A

The dry pipe is located in the

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104
Q

pitting of boiler metal

A

oxygen in the boiler will cause

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105
Q

F-32. x5. divede by 9

A

formula to fahrenheit to celcius

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106
Q

1,676,000
low pressure boiler
15 psi or less

A

BOP

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107
Q

on the discharge side of the feedwater pump

A

where is the closed feedwater heater located

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108
Q

outlet dampers

A

the gases of combustion leaving the boiler that has natual draft are controlled by

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109
Q

above the feed water pump and is connected to the suction side of the pump

A

where is the open feedwater heater located

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110
Q

100,000 btu per therm

A

the btu content of natural gas is _____btu per______

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111
Q

V

A

safety valve symbol

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112
Q

To protect sewer lines from the hightemperature and high pressure comingfrom the boiler blowdown lines, ___

A

blowdown tanks are used

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113
Q

the mud drum

A

is the lowest part of the water side of a water tube boiler

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114
Q

provides rules for the design, fabrication and inspection of boilers and pressure vessels

A

what asme does

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115
Q

106%

A

what percentage factor is used in an accumulation test to determinethe safe working pressure of a boiler

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116
Q

the bottom line is closed or clogged

A

a slowly rising water level in the gauge glass indicates that

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117
Q

both forced and induced draft fans

A

larger steam boiler that are equipped with air heater and / or economizer must use what kind of draft

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118
Q

m

A

miniature boiler symbol

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119
Q

water

A

on a scotch marine boiler the furnace is completely surrounded by

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120
Q

measure small electric currents

A

what is a galvanometer

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121
Q

surrounded by water

A

a wet top boiler does not produce super heater steam because the upper tube is

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122
Q

a difference in pressure that causes air or gases to flow

A

draft is define as

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123
Q

is the collection of calcium carbonate and magnesium carbonate deposite on the water side of the heating surface

A

define scale

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124
Q

6

A

Boiler safety valve capacity must be such thatthe steam pres

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125
Q

the point which the density of the water and the steam is the same

A

critical pressure of the steam is

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126
Q

1849, eugene bourdon

A

pressure gauge was discovered in ______by a french scientist named________

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127
Q

mercury below

A

Vacuum gauges are calibrated ininches of ___atmospheric pres

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128
Q

pressure below atmospheric pressure

A

Vacuum

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129
Q

where the gases of combustion take place

A

where is the furnace located

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130
Q

ringelman

A

the_________test is used to test the density of smoke leaving the boiler

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131
Q

boiler that has heat produced by electric resistence coils or electrodes

A

Electric boiler

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132
Q

3 1/2 pounds of steam per hour per kilowatt input

A

the minimum safety or safety relief valve relieving capacity for electric boiler shall be________

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133
Q

a feed water pumpa fuel pumpcombustion controlburner assembly

A

a package boiler as delivered includes

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134
Q

determine the heating volume of natural gas

A

what is a calorimeter

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135
Q

steam, feedwater, fuel, anddraft

A

The four systems required tooperate a steam boiler are

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136
Q

150 degrees

A

the raw water in the feedwater tank at what temperature the salts begin to settle

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137
Q

in inches of tenths of a vertical column of water

A

how manometer is calibrated

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138
Q

0-14

A

ph scale range is

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139
Q

2,3, or 4 pass boiler

A

a scotch marine boiler how many pass boiler is

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140
Q

mud drum

A

the bottom blow down line of a high pressure water tube boiler is connected to the

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141
Q

a lower pressure than

A

the superheater header safety valve is set to open at__________. the steam and water drum safety valves

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142
Q

automatically senses a reverse flow, flowing the wrong direction in a pipe and completely closes the line when the condition occurs

A

how the back flow preventer works

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143
Q

any piece of equipment where heat is transferred from one substance to another

A

heat exchanger

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144
Q

alkaline

A

ph more than 7

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145
Q

thoroughly clean the fire side and water side

A

before laying up a boiler, the operator must

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146
Q

valve located on the steam line closest to the shell of the boiler that cuts the boiler in on line and offline automatically . this valve also protects the system in the event of a large steam leak on any boiler

A

Automatic nonreturn valve:

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147
Q

separates water droplets from steam by centrifugal force and by changing direction

A

Cyclone separator:

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148
Q

automatic valve that controls the flow of a liquid in one direction

A

check valve

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149
Q

watertube boilers

A

soot blowers are mainly found on

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150
Q

1 inch

A

the minimum size for pipes and fitting for boilers with 100 sq ft or more of heating surface is

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151
Q

flyash

A

solid particles created in the combustion process are called

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152
Q

when there is a sudden drop in pressure without a corresponding drop in temperatures

A

when a boiler explosion occurs

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153
Q

highest part of the steam side of the boiler

A

the modulated pressure control must be connected to the

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154
Q

the open feed water heater

A

which feedwater heater mix the water and the steam

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155
Q

boilers that are equipped with baffles to direct the flow of the gases of combustion so that the gasses make more than one pass over the heating surfaces

A

Multiple – pass boiler:

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156
Q

a firetube boiler with an internal funace

A

Scotch marine boiler

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157
Q

atmospheric pressure

A

a barometer measures

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158
Q

outside of the boiler room

A

when the discharge from safety valves would result in a hazardous discharge of steam inside the boiler room, such discharge shall be extended_______

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159
Q

coil type or water tube boiler

A

hot water heating boilers, other than manually fired, shall be equipped with a low water cutoff , except tht a ________boiler or a _______ boiler

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160
Q

inlet dampers

A

combustion air is controlled by

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161
Q

thermostaticfloat thermostaticinverter bucket

A

the three kinds of steam traps are

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162
Q

to take and read the readings forremote plants centrally

A

A primary reason for usingthermocouples for measuringtempera

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163
Q

untreated water from wells or city water lines

A

Raw water

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164
Q

secure the fuel, purge the fire box and then shut down

A

in the event of flame failure the programmer will

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165
Q

splash shield or centrifugal separator

A

the discharge from relief valves when the operating at temperature is in excess of 212 degrees shall be equipped with_______or _______

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166
Q

process whereby steam turns back to water after the removal of heat

A

condense

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167
Q

the boiler operator cannot always see thechimney to observe smoking conditions

A

Smoke indicators are oftenessential because

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168
Q

at the highest part of the steam side of the boiler

A

the boiler vent is located

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169
Q

measure oxygen

A

what is a fyrite analyzer

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170
Q

a scruber

A

_______removes undesirable gaseous elements from the flue gas

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171
Q

natural and mechanical

A

what are two types of draft

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172
Q

pressure greater than atmospheric pressure

A

positive pressure

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173
Q

surface tension

A

water polluted with foreign matter causes an increase in

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174
Q

1%, 10 degrees

A

when economizers are used to heat the boiler feed water there is an approximate___% savings in the fuel for every____degrees rise in the feed water temperature

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175
Q

a safety relief valve must be install in the discharge side

A

to protect the turbine pump from excessive pressure

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176
Q

removes sludge and sedimentfrom the mud drum

A

The bottom blowdown on aboiler _

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177
Q

offer no restrictions to the flow of steam

A

the main stop valve should be gate valve because

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178
Q

a closed pressure vessel in which water is converted to steam by the application of heat

A

Steam boiler

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179
Q

.manual test once a month.pressure test once a year

A

safety valve testing, boilers 16 psi up to and including 900 psi, how often

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180
Q

pounds of steam per hour that a steam boiler is capable to producing

A

Boiler capacity

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181
Q

is when all fuel is burned using the minimal amount of excess air

A

what is complete combustion

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182
Q

determine the moisture content in steam

A

a throttling calorimeter is used to

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183
Q

a closed pipe perforated at the top, with drain holes on the bottom that remove moisture from the steam

A

Dry pipe separator

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184
Q

is a selt contained unit complete with feedwater accessories, fuel accessories, burner assembly and combustion controls

A

what is a package boiler

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185
Q

using the try cocks

A

When replacing a broken gauge glass, thewater level is check

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186
Q

is an automatic divice that increases the overall efficiency of a steam plant by removing the air and condensate from steam lines with out the loss of steam

A

define a steam trap

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187
Q

using bottom blowdown and continuous blowdown

A

how sludge is removed from the boiler

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188
Q

sodium sulfite=naso3

A

what chemical is added to the boiler water to combat rust and pitting of the metal

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189
Q

15 psi to 25 psi

A

When warming up a boiler during cold plantstartup, the boile

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190
Q

A data sheet to record pressures, temperatures of other operating conditions of a boiler on acontinuous basis.

A

Boiler Room Log

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191
Q

one pass boiler

A

a vertical fire tube boiler how many pass boiler is

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192
Q

increase the amount of heat in the steam

A

superheaters are used to

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193
Q

24”

A

inspection, maintenance, and repair passageways around all sides of boilers shall have an unobtructed width of not less that

194
Q

is a closed vessel in which water under pressure is transformed into steam by application of heat

A

what is a boiler

195
Q

.0361 psi

A

one inch of water column is equal to

196
Q

is temperature of the surrounding area

A

Ambient Temperature

197
Q

5

A

a slow opening valve requires_____complete turns to be fully open or close

198
Q

leak

A

a dry top boiler produces steam that is slighly superheater, which causes tubes in the upper tube to be prone to

199
Q

manufacturer or an authorizedrepresentative of the manufacturer

A

According to the ASME Code, any repairsdone on a boiler safe

200
Q

protect workers andequipment

A

The primary purpose of establishing a setof plant safety rul

201
Q

height of the chimney

A

the amount of draft available in the natural draft system is dependent on the

202
Q

installed on boiler main steam lines to allow for expansion and contraction of the lines

A

Expansion bends

203
Q

temperatures

A

a thermocouple measure

204
Q

the secure the burner in the event of low water level

A

the purpose of the low water fuel cut off

205
Q

stays

A

the steam and wate drum of water tube boilers is dish(concaved) to eliminate the need for

206
Q

high alkalinity, dissolved solids and sludge

A

carry over is caused by

207
Q

15

A

a low pressure steam boiler has a mawp of ____psi

208
Q

stay bolts

A

the combustion chamber (firebox) of a vertical firetube boiler is supported by

209
Q

in upper part of the steam and water drum

A

the dry pipe is located

210
Q

Qp

A

pressure piping symbol

211
Q

inches of water

A

a diaphragm draft gauge is calibrated in

212
Q

pressure greater than atmospheric pressure

A

positive pressure

213
Q

maintain a consistent water level in the boiler

A

the purpose of the feedwater regulator is to

214
Q

is a power boiler not exceeding 100 psi

A

what is a miniature boiler

215
Q

is the difference in weight between a column of hot and a column of cold air

A

what is natural draft

216
Q

6% above the MAWP

A

With all of the safety valves popping, theboiler pressure sh

217
Q

a minimal amount of excess air

A

complete combustion is defined as burning all the fuel using

218
Q

co 2

A

carbon dioxide symbol

219
Q

fuel; heat; oxygen

A

The three ingredients needed to start afire are ___, ___, an

220
Q

80% to 85%

A

modern firetube boilers with improve design and heat transfer rates have achieved thermal efficiency rates as high as

221
Q

to control the desire set pressure at the burner

A

what is the purpose of the gas pressure regulator

222
Q

148.22

A

how much is the examination fee for the test

223
Q

positive displacement pump

A

a steam driven reciprocating pump is a

224
Q

force and induce on the same boiler

A

what is combination draft

225
Q

be prone to leaks

A

a dry top boiler produces steam that is slightly superheater which causes tubes in the upper tube sheet to

226
Q

1000

A

how many btus in one cubic feet of natural gas

227
Q

change scale-forming salts to a nonadhering sludge

A

feed water is treated chemically before it enters the boiler to

228
Q

between the feedwater pump and the boiler

A

a closed feed water heater is located

229
Q

tin

A

A boiler fusible plug is brass orbronze with a core of ___.

230
Q

250, 750

A

firetube boilers are designed for pressures up to a maximum of_______psi and approximately______bhp

231
Q

steam

A

the top try cock when operated should blow

232
Q

firetube

A

stay and braces are needed to prevent bulging in _______boilers

233
Q

is a boiler which pressure exceeding 15 psi but not exceeding 100 psi

A

small power boiler

234
Q

reduce the thermal shock to the steam boiler as water enters the drum

A

the primary reason for using an open feedwater heater is

235
Q

is heat that can be measured with a thermometer or sensed by a person. sensible heat raises the temperature of a substance and does not involve a change of state like water changing to steam

A

what is sensible heat

236
Q

pulling the test lever by hand and then releasing it to snap closed

A

manual testing of the safety valve is accomplished by

237
Q

hairline cracks in the refractory

A

Spalling in a boiler refers to

238
Q

450, 600 degress

A

an economyzer becomes necessary on boilers with operating steam pressures in excess of______psi where the temperature of gases leaving the boiler excess of

239
Q

force caused by a rotating impeller that builds up in a centrifugal pump

A

centrifugal force

240
Q

asme, national board inspection

A

repairs, changes, or alterations made o a boiler shall conform with the precribed or recommeded rules of the ________code the _______ _________ ________ code

241
Q

Co

A

symbol for carbon monoxide

242
Q

air that controls the combustion efficiency

A

secondary air

243
Q

ultrasonic thickness gauge

A

what divice is used to measured the thickness of metal

244
Q

is a boiler in which steam is generated at pressures exceeding 15 psi

A

what is a power boiler

245
Q

carryover

A

small amounts of water that leave the boiler is called

246
Q

20 and 80

A

air contains_____% oxygen and ______% nitrogen

247
Q

caustic soda and phosphate

A

what chemicals are added to the boiler water to prevent scale

248
Q

in the breeching between the outlet damper and the chmmey where the of combustion made the last pass in the boiler

A

where is the ecomomizer located

249
Q

caustic embrittlement

A

Cracking of the boiler metal along theseams and tube ends is

250
Q

imcomplete

A

carbon monoxide in the flue gas is sign of ______combustion

251
Q

atmosphere; inside the boilersetting

A

Draft in the boiler is measured betweentwo points such as th

252
Q

occurs when two forces of equal intensity act on an object pulling in opposite directions

A

tensile stress

253
Q

safety valve

A

The most important fitting ona boiler is the

254
Q

the ratio of heat absorbed by the water in the boiler to the heat available in the fuel

A

thermal efficiency is

255
Q

15, 6

A

a high pressure or power steam boiler operates at pressure above_____psi and over______bhp

256
Q

to prove the pilot and the main flame

A

the purpose of the flame scanner is

257
Q

is the rapid unit of fuel with oxygen for a release of heat

A

what is combustion

258
Q

fuel systemdraft systemfeed water systemsteam system

A

what are the four basic boiler systems

259
Q

to protect the steam pressure gauge from high temperature steam

A

what is the purpose of the siphon

260
Q

strap on thermometers and temperature crayons

A

name two test for steam trap operation

261
Q

once a shift

A

how often the low water fuel cutoff control shuld be blown down

262
Q

10 degrees, 1%

A

a_____rise in feedwater temperature gives approximately_____savings in fuel.

263
Q

dishonesty, imcopetency or misconduct

A

wha are the reasons for the boiler board to revoke or cancel a stationary engineer’s license

264
Q

the gases of combustion will take a direct path to the chimney

A

can u explain what will happen if broken baffles are not replaced

265
Q

air supplied to the burner than is more than the theritical amount needed to burned fuel

A

excess air

266
Q

is a boiler operated at pressures not exceeding 15 psi

A

what is a steam heating boiler

267
Q

opened

A

to start a turbine pump the discharge should be

268
Q

power driven fan forces air into the boiler

A

describe force draft

269
Q

tensile

A

boiler plates and staybolts are subject to ______stress

270
Q

one pass boiler

A

vertical firetube boiler, how many pass boiler is

271
Q

is a valve that keeps undesirable reversal of flow of a liquid, gas or solid to go back in to the potable water supply

A

what is a back flow preventer

272
Q

induced dranf fan

A

gases of combustion are pulled from the boiler by the

273
Q

over heating the boiler metal

A

scale deposit in an hrt boiler can caused

274
Q

neutral

A

ph7 =

275
Q

once a month

A

how often the evaporation test should be done in a boiler

276
Q

140 degrees

A

the city of houston will not allow to discharge water directly to the drainage system having temperatures above

277
Q

d

A

class of fire combustible metal

278
Q

dry top

A

which boiler produces superheated steam dry top or wet top

279
Q

0.433

A

the pressure at the base of a vertical foot of water is_____psi

280
Q

.433 psi

A

one foot column of water is equal to

281
Q

1 1/2 to 2 times the safety valve setting

A

a boiler steam pressure gauge should have a range of

282
Q

is the rapid fluctuation of the water level caused by impurities on the surface of the water

A

define foaming

283
Q

caustic embrittlement

A

boiler water having high alkalinity could develop

284
Q

used to protect liquid systems form excessive pressure

A

relief valve

285
Q

48”

A

a minimum clearance of_______ shall be maintained between top a a boiler and any building component

286
Q

a

A

what class of fire for wood, paper, and textiles

287
Q

A

A

boiler assembly symbol

288
Q

the difference in pressure between two points that causes air or gases to flow

A

draft is

289
Q

device used to increase the quality of steam . found in the steam and water drum

A

Steam separator

290
Q

complete

A

_______combustion is when all fuel is burned using the minimal amount of excess air

291
Q

draft, feedwater, fuel and steam

A

the four systems required to operate a steam boiler are

292
Q

pressure , low-waer cutoff

A

every steam heating boiler, other than manually fired, shall be equipped with a ______combustion regulator and or_________ ________

293
Q

excessive heat , corrosion and freezing

A

the blowdown line must be protected from

294
Q

check valve can be repair with out taking the boiler off line

A

the feed water stop valve on the feedwater line is located closest to the boiler shell so that the

295
Q

reduce turbulence in the gauge glass to get a more accurate reading of the water level in the boiler

A

the main purpose of the water column is to

296
Q

150 degrees , 5 psi

A

the blow down tank equipment should be of sufficient capacity to prevent discharging water over_____and or _____in to the city line

297
Q

c

A

class of fire electrical equipment

298
Q

a secondary means of determaining the water level in the boiler

A

try cocks are

299
Q

heating the feedwater andusing sodium sulfite

A

Oxygen present in the boilerwater is removed by ___.

300
Q

Safety relief valve, blow-down valve, low water cut-off, and pressure gauge

A

Four safety features required on the steam boiler are

301
Q
  1. high water level2. high surface tention3. opening the main steam valve too quicky
A

what causes priming and carryover

302
Q

be sure all electrical equipment is properly ground

A

when working inside a boiler what procedure must be taken

303
Q

furnace explosion occurs on the fire side of the boilerboiler explosion occurs on the water side of the boiler

A

what is the difference between a furnace explosion and a boiler explosion

304
Q

slug feeding and chemical feed pump

A

name two ways to feed chemical to a boiler

305
Q

using sodium sulfite

A

oxygen present in the boiler water is removed by

306
Q

pyrometer

A

______is used to measured furnace temp.

307
Q

at the nowl

A

the feedwater regulator element is located

308
Q

as a secondary means of determining the water level

A

the try cocks on a water column are used

309
Q

wire brush and vacuum cleaner

A

soot inside of boiler tubes is removed by

310
Q

spring loaded pop type and super jet type

A

the two basic types of safety valves found on steam boilers are

311
Q

highest part of the steam sideof the boiler

A

The modulating pressure controlmust be connected to the

312
Q

unburned fuel

A

what is imcomplete combustion

313
Q

oxygen pitting in the boiler

A

water temperatures that is too low in the open heat water heater could cause

314
Q

cx1.8+32

A

formula celsius to fahrenheit

315
Q

L

A

locomotive boiler symbol

316
Q

S

A

power boiler symbol

317
Q

no

A

the discharge piping of the safety or relief valve can be connected to any other piping system

318
Q

pitting

A

oxygen in the boiler causes

319
Q

H

A

heating boiler symbol

320
Q

hydraulic turbine cutters

A

scale in a water tube boiler can be removed by

321
Q

scale

A

deposits of calcuim and magnesium carbonates on the boiler heating surface cause

322
Q

1 1/2 time the mawp

A

when making a hydrostatic test on a boiler , the pressure is

323
Q

scale build up inside the tubes

A

over heating the tubes on the water tube boiler can be cause by

324
Q

balanced

A

Draft pressure maintained at a constantpressure is called a

325
Q

a mixture of water and steam

A

the middle try cock when operated should blow

326
Q

fuel, heat and oxygen

A

the 3 ingredients needed to start a fire are

327
Q

by exchanging the calcium and magnesium carbonates with sodium carbonates

A

how zeolite sosten the water

328
Q

500

A

according to the asme code, a boiler that has more than ____sq ft of heating surface must have two or more safety valves

329
Q

A firetube boiler with an internal furnace

A

scotch Marine Boiler

330
Q

10 to 11.5

A

The pH of the boiler watershould be ___.

331
Q

by placing an internal furnace within the boiler shell

A

how the heating surface can be increase

332
Q

10 to 11.5

A

The pH of the boiler watershould be __

333
Q

American Society of MechanicalEngineers (ASME)

A

Safety valve connections mustbe approved by the ___.

334
Q

2 1/2

A

the maximum size of steam boiler blowdown line

335
Q

is wearing away of boiler metal

A

what is erosion

336
Q

december 31

A

when the license expires

337
Q

to ensure the low water cutoff works properly

A

what is the purpose of the evapotation test

338
Q

3206 psi

A

what is the critical pressure of the steam

339
Q

13

A

approximately _____% of the water flashes in to steam

340
Q

inches or tenths of an inch of a vertical water column

A

draft is measured in

341
Q

a siphon

A

the boiler steam pressure gauge is protected from high temperatures by

342
Q

caustic embrittlement

A

high alkalinity water can lead to

343
Q

10 degrees to 20 degrees

A

there should be a ______ to ______ drop between the inlet side and the outlet side of the steam trap and condensate should leave the trap

344
Q

6%

A

the safety valve should relieve all the steam with out the pressure increasing more than____above the set pressure

345
Q

reduce thermal schock on the boiler metal

A

the purpose of the closed feedwater heater is to

346
Q

are nest of tubes located in the furnace or in the direct path of gases of combustion

A

what is a super heater

347
Q

15 to 25 psi

A

when warming up a boiler, the boiler vent should remain open until the steam pressure reaches approximately

348
Q

the feedwater pump to become steambound

A

water temperatures that is too high in an open feed water heater could cause

349
Q

Lime; soda ash

A

___ and ___ are used to softenfeedwater.

350
Q

6% above the mawp

A

with all the safety valves popping, the boiler pressure should not go higher than

351
Q

direct the gases so that they come into close contact with the boiler heating surface

A

baffles are designed to

352
Q

btus= british termal units

A

the heating value of a fuel is expressed in

353
Q

is the evaporation of 34.5 lb of water/hr from at feedwater temperature of 212 degrees

A

what is a boiler horse power

354
Q

is the accumulated residue produce from impurities in the water

A

what is sludge

355
Q

to prevent the boiler from exceeding it mawp

A

what is the purpose of the safety valve

356
Q

18”

A

the discharge from relief valves shall be piped to an approved location within _____of the floor or to an open receptacle

357
Q

furnace that is located within the boiler and is surrouded by water in the scotch marine boiler

A

Internal furnace:

358
Q

13%

A

what %of the water flashes in to steam when gets to the boiler

359
Q

is a pilot that burns without turndown thru the entire period that the boiler is in service whether or not the main burner is firing

A

continuous pilot

360
Q

firetube

A

staybolts are most commonly used in________boilers

361
Q

temperature increases withno increase in pressure

A

When steam is superheatedthe

362
Q

steam a temperature above its corresponding pressure

A

Superheated steam

363
Q

acid

A

ph less than 7

364
Q

accumulation test

A

a(n)___________test is used to test the relieving capacity of a safety valve

365
Q

Mercury-tube

A

The most common type of pressurecontrol used is the ___type.

366
Q
  1. reduce high water level2. control chemical concentration3. remove sluge and sediment4. dumping the boiler
A

4 reasons to use botton blowdown

367
Q

140 degrees

A

blowdown water must not be over______ before it can be disposed to the city sewer line

368
Q

Po4=phosphate

A

what chemical is added to the boiler water to change mineral in to non-adhering sluge

369
Q

starts and stops the burner based on steam pressure demand

A

what does the pressure control does

370
Q

2

A

with how many temperature combustion regulators in series every hot water heating boiler, other than manually fired, shall be equipped with

371
Q

lime and soda ash

A

what are used to soften feedwater

372
Q

the upper tube sheet is surrounded by water

A

a wet top boiler does not produce superheated steam because

373
Q

test the low water fuel cutoff control, inspect andcheck running auxiliaries for proper lubrication, andcheck the burner and the fire for correct flame,including the fuel temperature and pressure

A

The duties of a boiler operatortaking over a shift are to

374
Q

350

A

malleable iron is used for construction of water columns operating up to and including ______psi

375
Q

the ratio of the heat absorbed by the boiler to the heat available in the fuel per unit of time

A

Thermal efficiency

376
Q

are particles of foreign matter present in water

A

what is sediment

377
Q

wearing away of metal

A

impingment is

378
Q

. manual test once every six months. pressure test once a year

A

safety valve testing, boiler above 900 psi, how often

379
Q

do not mix

A

in a closed feedwater heater, the steam and water

380
Q

beween the boiler and the slow opening valve

A

if a quick opening valve is used as a bottom blowdown valve, it must be located

381
Q

a mixture of water and steam

A

the middle try cock when operated should blow

382
Q

prevents backflow from theboiler into the feedwater line

A

The check valve on the boilerfeedwater line

383
Q

is any room containing a steam or hot water boiler

A

what is a boiler

384
Q

perfect

A

________combustion is when all fuel is burned using only the theorical amount of air supplied

385
Q

increase the rate of combustion

A

when using mechanical draft, it is possible to

386
Q

pressure

A

a vaporstat control is sensitive to

387
Q

b

A

what class of fire for flammable liquids

388
Q

fusion welding , national board inspection

A

all repair by welding shall be completed in accordance with the recomended rules for repair by _____ _______ to power boilers published in the ______ _______ _______code

389
Q

removes moisture form thesteam

A

A dry pipe removes

390
Q

when you can touch it for 10 seconds

A

when a boile is cool enough to dump

391
Q

hole in the steam and water side of a boiler used to clean, inspect and repair a boiler

A

manhole

392
Q

safety and efficiency

A

Boiler fittings are necessaryfor ___.

393
Q

inside tube surface

A

In a firetube boiler, soot settleson the ___.

394
Q

increases in chimney temperaturewithout a corresponding increase in steamdemand indicates __

A

a broken baffle

395
Q

an accumulation ofcombustible gases

A

A furnace explosion can becaused by ___.

396
Q

blowdown the boiler

A

if water comes out of the top try cock, the boiler operator must

397
Q

3/4

A

in small boilers with 100 sq ft or less of heating surface the minimum size for pipes and fittings is

398
Q

combustion efficiency

A

the orsat analyzer is used to determine the

399
Q

100 psi

A

water boils at 337 degrees at ______psi

400
Q

250

A

try cocks are very effective up to______psi

401
Q

8,380,000

A

2nd grade

402
Q

gas company representative

A

gas leaks should be located and repair by

403
Q

250

A

cast iron is for constructions of water columns up to _____psi

404
Q

steam at a teamperature higher than its corresponding pressure

A

superheater steam is

405
Q

up to 3000 psi

A

super jet safety valve are used for pressures

406
Q

controls combustion efficiency by controlling how completely the fuel is burned

A

secondary air

407
Q

water tube

A

which boiler is less likely to produce an explosion

408
Q

Stress imposed on boiler metal by a sudden and drastic change in temperature.

A

Thermal Shock

409
Q

one inch

A

the minimum pipe size connecting to the water column

410
Q

high temperatures

A

a pyrometer meassures

411
Q

outside of the boiler shell

A

the furnace of an hrt boiler is located

412
Q

open feed water heater

A

condensate is return to the boiler with the make up water line in the

413
Q

u tube or inclined type

A

manameter draft gauge can be ______tube or _____tube type gauge

414
Q

nest of tubes located in the furnace area or in the direct path of gases of combustion

A

super heaters are

415
Q

a minimal amount of excess ai

A

Complete combustion is defined asburning all fuel using _

416
Q

3,352,000

A

3 rd grade

417
Q

float in a tapeted tube

A

the rotameter flow meter consist of a

418
Q

use a minimal amount of excess air

A

complete combustion

419
Q

carbon deposits caused by incomplete combustion

A

Soot

420
Q

is the deterioration of the boiler metal by a chemical rection of the oxygen and carbon dioxide in the water

A

define corrosion

421
Q

25%

A

the safety valve must be sufficient capacity to relieve ______to the steam the boiler produce

422
Q

to take and read the readings for remote plants centrally

A

the primary reason for using thermocouples for measuring temperatures is

423
Q

the amount of moisture in the steam

A

a throttling calorimeter determines

424
Q

is whe all fuel is burned using only the theorical amount of air supplied

A

what is perfect combustion

425
Q

to keep rust and debris from entering the inlet side of the steam trap

A

the purpose of the steam strainer

426
Q

is the difference in psi between when a safety valve pops open and then closes with a definite drop in psi

A

what is blowback, when referring to a safety valve

427
Q

two bottom blowdown valves

A

According to the ASME code, boilersoperating at 100 psi or o

428
Q

refractory ( firebrick)

A

baffles are constructed of

429
Q

condition that occurs when the temperature in the open heat water heater gets too high and the feed water pump cannot deliver water to the boiler

A

steam bound

430
Q

an accumulation test

A

what test should be done to test the relieving capacity of the of the safety valves

431
Q

power driven fans

A

mechanical draft is produce by

432
Q

water carrying over with the steam

A

what is priming and carry over

433
Q

continuous blowdown

A

what blowdown maintains a more consistence of quimicals

434
Q

metal to crack along the seams and at the end of tubes in a boiler

A

caustic embrittlement can cause

435
Q

caustic soda

A

what chemical is added to the boiler water to control alkalinity

436
Q

return and non return

A

the two types of steam traps

437
Q

between the pump and the feed water heater

A

a reciprocating feedwater pump must have safety relief valve located

438
Q

3

A

an approved manual shutoff valve with handle shall be install within______ft of the boiler gas train

439
Q

pounds of steam per hour capable ofdischarging under a given pressure

A

The relieving capacity of a safetyvalve is measured in ___.

440
Q

watertube boilerin which replaceable tubes surround the firebox and shape an S at the top

A

Flex-tube boiler

441
Q

140 degrees

A

no steam pipe shall be directly connected to any part of a plumbing or drainage system, nor shall any water having a temperatures above

442
Q

pound square inch

A

a steam pressure gauge is calibrated in

443
Q

the water level on all boilers that are onthe line by blowing down the watercolumn and gauge glass

A

When taking over a shift, the boileroperator must first chec

444
Q

impurities on the boiler water surface

A

foaming may be caused by

445
Q

between the boiler and chimney

A

the induce draft fan is located

446
Q

the top line is closed or clogged

A

A slowly rising water level in thegauge glass indicates that

447
Q
  1. high ceilings2. less floor space3. the use of staybolts
A

vertical firetube boilers requieres give 3 answers

448
Q

rust and pitting of the boiler metal

A

sulfite combat?

449
Q

incomplete combustion

A

smoke is the result of

450
Q

pouns of steam per hour capable of discharging under a giving pressure

A

the relieving capacity of a safety valve is measured in

451
Q

is air supply to the boiler that is more than theorical amount needed to burn the fuel

A

access air

452
Q

calcium and magnesium

A

the process of soften the water is to remove

453
Q

economizers and air heaters

A

To reduce the heat loss of flue gases goingto the chimney, b

454
Q

two or more boilers connected to a common steam header

A

Boilers in battery

455
Q

metal

A

acidic water removes

456
Q

the boiler has under 100 sq ft of heating surface

A

the size of bottom blowdown lines can be reduced when

457
Q

6”

A

on a vertical boiler what is the minimum clearance to the boiler mud rim or bottom from the ground

458
Q

watertube boilerin which replaceable tubes surround the firebox and shape an S at the top

A

Flex-tube boiler

459
Q
  1. can be factory assembled, thus giving better quality control2.initial cost is less than water tube boilers3.requires little or no setting4. contains larger volume of water5. requires less head room and floor space
A

name 4 advantages of firetube boiler

460
Q

is an enclosed area with limited space and accessibility. is a room or space having a volume less than 50 cubic feet per 1000 btu/h

A

what is a confined space

461
Q

a variety of liquids

A

flow meter measure the rate of flow of

462
Q

To prevent loss of heat during steam transfer.

A

Why are steam lines insulated?

463
Q

improper boiler water treatment

A

scale buildup on the water side of a steam boiler is caused by

464
Q

is a boiler that operates above 160 psi water or 260 degrees water

A

what is a high pressure hot water boiler

465
Q

is a burner smaller than the main burner which is ignited by a spark and which provides ignition energy required to light off the main burner

A

what is a pilot

466
Q

no

A

can u install a valve or any description between the safety valve or relief valve and the boiler

467
Q

gagged or removed and the openings must be blank flangey

A

when making a hydrostatic test on a boiler the safety valves must be

468
Q

to trap steam, vent air, remove condensate from steam lines

A

the purpose of the steam trap

469
Q

reciprocating, centrifugal and turbine type

A

name the 3 types of feedwater pumps

470
Q

a thermocouple

A

what can we used to read superheated steam, gases of combustion and condensate return

471
Q

used to protect liquid systems form excessive pressure

A

relief valve

472
Q

boiler main steam line beween the boiler and the main stop valve

A

an automatic nonreturn valve is found on the

473
Q

tensile, shear

A

boiler plates and staybolts are subject to _____stress. rivets are subject primary to ______stress

474
Q

12

A

in order to burn 1 pound of fuel, approximately_____lbs of air is needed

475
Q

b

A

class fire for oil, gas, grease, and paint

476
Q

texas, ASME, stamp

A

STANDARD BOILER. a boiles that bears the _______stamp, the ______stamp, or the ______ of any jurisdiction that has adopted a standard of construction equivalent to that required by the state

477
Q

type of open feedwater heater equipped with a vent condenser

A

deaerating feedwater heater

478
Q

incomplete

A

soot and smoke are the result of _______ combustion

479
Q

difference in weight between a column of hot gases inside the chimney from a column of cold air outside the chimney

A

Natural draft is produced by

480
Q

deadweight tester

A

pressure gauges are calibrated with

481
Q

75%

A

when testing a safety valve by hand, there must be at least______of the popping pressure

bioler test (2 decks)

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