boiler

Question 1

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

Answer 1

50

Question 2

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

Answer 2

water

Question 3

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

Answer 3

10 sq ft of boiler heating surface

Question 4

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

Answer 4

5 sq ft of boiler heating surface

Question 5

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

Answer 5

67,000

Question 6

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

Answer 6

10

Question 7

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

Answer 7

chief engineer or the operating engineer

Question 8

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

Answer 8

500 ft

Question 9

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

Answer 9

50

Question 10

when used, a quick opening blowdown valve must be located

Answer 10

neared to the boiler (open 1st close last)

Question 11

the min passing score of the engineers license exam is

Answer 11

70%

Question 12

licenses granted must be displayed in

Answer 12

a conspicuous place in the engine or boiler room

Question 13

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

Answer 13

2000 hours

Question 14

sensible heat is

Answer 14

able to cause change of temperature

Question 15

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

Answer 15

latent heat

Question 16

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

Answer 16

convection
conduction
radiation

Question 17

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

Answer 17

flow of fluids

Question 18

Large high pressure utility boilers use

Answer 18

balanced draft

Question 19

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

Answer 19

conduction

Question 20

an example of the transfer of heat by radiation is

Answer 20

the heating effect of the sun on the earth

Question 21

the document governing boiler fittings and valves is the code

Answer 21

ASME

Question 22

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

Answer 22

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

Question 23

rules traveling the construction of power boilers are set out in

Answer 23

ASME Code section 1

Question 24

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

Answer 24

perform an accumulation test

Question 25

an exapmle of a nondestructive test on a boiler is

Answer 25

an X ray test

Question 26

the material used most for piping is

Answer 26

low carbon steel

Question 27

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

Answer 27

height of the stack

Question 28

a check valve is a valve that

Answer 28

allows flow in one direction only

Question 29

expansion bends or joints are installed in piping systems to

Answer 29

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

Question 30

the main purpose of installing insulaiton

Answer 30

prevent heat loss

Question 31

the purpose of a steam trap is to

Answer 31

remove air and condensate from steam lines

Question 32

boiler stays

Answer 32

are used to support te tube sheet in a boiler

Question 33

hand hole and manhole openings

Answer 33

permit inspection, cleaning and repairs

Question 34

a LWFCO us used on a boiler to prevent

Answer 34

damage to the boiler from overheating

Question 35

the boilers heating surface

Answer 35

can be used to determine the boiler capacity

Question 36

with regard to steam boilers the letters HRT mean

Answer 36

Horizontal return tubular

Question 37

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

Answer 37

fire tube

Question 38

the 2 general designed of eclectic boilers are

Answer 38

electrode and resistance

Question 39

continous blowdown system are used in boiler

Answer 39

to help control; the dissolved solids concentrations

Question 40

a water tube boiler is a boiler that has

Answer 40

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

Question 41

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

Answer 41

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

Question 42

the purpose of spring in a safety valve is to

Answer 42

close the valve disc against the seat

Question 43

the safety valve test lever must not be used unless

Answer 43

the pressure is about 75% of valve popping pressure

Question 44

a siphon tube is necessary to

Answer 44

keep stream out of a bourdon tube

Question 45

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

Answer 45

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

Question 46

try cocks on a water column are used to

Answer 46

check the water level in the boiler

Question 47

a blowdown is performed to remove sludge from a boiler

Answer 47

bottm

Question 48

boiler baffles are used

Answer 48

to direct the fume gases through the boiler furnace

Question 49

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

Answer 49

float chamber from collecting sediment

Question 50

the feedwater line must contain

Answer 50

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

Question 51

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

Answer 51

closest to the boiler and opened first

Question 52

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

Answer 52

globe

Question 53

The cobustiable elements in fules are

Answer 53

carbon | hydrogen

Question 54

balck smoke can be caused by

Answer 54

insufficient combustion air

Question 55

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

Answer 55

draft

Question 56

the main function of a gas burner is to

Answer 56

mix the gas with combustion air

Question 57

combustion is a

Answer 57

chemical combustion of the elements of fuel with oxygen

Question 58

modulating combustion control;s

Answer 58

regulate the briner firing rate

Question 59

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

Answer 59

fuel supply when the burner flame goes out

Question 60

a steam boiler operating control is used to control the

Answer 60

steam pressure in the boiler

Question 61

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

Answer 61

the vent has been left open

Question 62

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

Answer 62

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

Question 63

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

Answer 63

the quick opening valve 1st and close last

Question 64

boiler water wit ha pH of 6 is considered

Answer 64

alkaline

Question 65

the pH of a boiler should be kept at

Answer 65

10.0-11.5

Question 66

foaming in a boiler may be caused by

Answer 66

a high concentration of dissolved solids in the boiler water

Question 67

is any solid impurity in water that cannot be dissoleved

Answer 67

suspended matter

Question 68

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

Answer 68

160 psig

Question 69

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

Answer 69

1.5

Question 70

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

Answer 70

hour

Question 71

the most important valve on a boiler is the valve

Answer 71

safety

Question 72

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

Answer 72

access the connecting piping for cleaning

Question 73

improper drainage of steam lines could

Answer 73

result in water hammer

Question 74

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

Answer 74

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

Question 75

a tri-indicator could be found on a

Answer 75

hot water boiler

Question 76

the tri-indicator would inform the boiler operator of

Answer 76

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

Question 77

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

Answer 77

the instant release of energy stored in the water as heat

Question 78

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

Answer 78

the true water level inside the boiler

Question 79

an aqua stat is used on a

Answer 79

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