問題一覧
1
a siphon tube is found on a _______.
pressuretrol
2
an isolation valve can be place between the boiler and the gauge.
yes
3
What does MAWP stand for?
Maximum Allowable Working Pressure
4
A high-pressure boiler has a MAWP more than __ psi?
15 psi
5
who is responsible to have the boiler inspected?
the operator
6
Which type of heat causes a change in temperature?
Sensible heat
7
if a person fails the special class license test, they must wait ______ days to retest.
30 days
8
what must be displayed in the boiler room at all times?
engineer’s license, and logbooks
9
What valve is the most important valve on a hot water boiler?
Relief Valve
10
one of the most dangerous acts that can be taken by a boiler operator when a dangerous low water condition exists is _______.
add water to the boiler
11
water quality is not important in a steam boiler
false
12
define a boiler plant per the statues
all boilers on a common header and their related appurtenances
13
For the purpose of rating boiler horsepower for engineer license classification only:____ square feet of heating surface shall be considered equivalent to one horsepower for conventional boilers and ____ square feet of heating surface equivalent to one boiler horsepower for steam coil type generators.
10 and 5
14
which system controls the flow of gases through the boiler?
draft system
15
A _________ is used to control a steam boiler
pressuretrol
16
What must be installed on a steam boiler between the boiler and the steam gauge?
Isolation valve and siphon tube
17
if a safety valve is leaking, what should be done?
replace or repair the valve
18
define a chief engineer per the statutes
properly licensed engineer required to be in charge of and responsible for the safe operation of a boiler plant
19
Which test is used to check/test a low water cut-off control?
Evaportion test (in)
20
Who rates relief valves and safety valves?
American Society of Mechanical Engineers
21
What control is used on hot water boilers to maintain temperature?
Aquastat
22
what does LWCO stand for?
Low water cutoff control
23
when blowing down a gauge glass, the water should return _____.
Quickly
24
how much experience is required for a special class license
no experience needed
25
One psi equals __” of water column.
27.7”
26
Which statement describes the definition of a BTU
Amount of heat needed to raise 1 lbs of water 1 F
27
Trycocks are used on a steam boiler to ____?
Indicate the true water level
28
________ is caused by the formation of steam bubbles trapped below a film on the boiler water surface
foaming
29
Which three terms are used to describe combustion?
Perfect, Complete or Incomplete
30
Safety valves or safety relief valves should be manually tested at least.
Monthly
31
Which test is used to check/test a relief or safety valve?
Accumlation test
32
a boiler with a new burner or a new boiler must have a _________.
a kill switch outside the boiler room
33
A high pressure boiler having more than ____ square feet of water heating surface (50 BHP) must have at least two means of feeding water.
500
34
Which license requires that a person be 18 years of age and be competent?
Special Engineer
35
Which type of heat causes a change of state (water to steam or steam to water)?
Latent heat
36
Which blowdown is used to remove sediment from the bottom of the boiler?
Bottom blowdown
37
Which test is used to check a boiler for leaks or damage due to a low water condition?
Hydrostatic test (out)
38
Trycocks are used to determine the boiler water level if the gauge glass is not functioning?
True
39
A year is defined as at least ____ hours.
2000 hours
40
what temperature will water boil at when it is at atmospheric pressure?
212 F
41
What does PSIG stand for?
Pounds per square inch gauge
42
Describe a fire tube boiler?
Fire in the tubes surrounded by water
43
an aqua-stat works by sensing the boiler
temperature
44
Which blowdown is used to remove impurities from the boiler at a continuous rate?
Continuous blowdown
45
An ________ is used to control a hot water boiler
aqua-stat
46
What type of blow-down will remove sediment from the bottom of the boiler?
Bottom blowdown
47
define a boiler per the statutes?
a vessel in which steam or other vapor, hot water or other hot liquid is generated for use external to itself
48
What is the minimum age required for a Special Class License?
18 years
49
Describe a water tube boiler?
Water in the tubes surrounded by fire
50
A Tri-Indicator would inform the boiler operator of which terms?
Temperature of the water, pressure of the water, height of the water.
51
Which blowdown is used to remove impurities from the surface water?
Surface blowdown
52
The low water cutoff should be tested.
Weekly
53
A safety relief is the most important on the boiler?
True
54
Heat always travels from hot to cold
True
55
every low pressure or high pressure boiler must have at least one safety valve
true
56
A low-pressure boiler has a MAWP of no more than __ psi?
15 psi
57
An electric boiler is 100% efficient?
True
58
Water should be added to a hot water boiler if water is not present in the gauge glass.
False
59
define a boiler engineer per the statutes
properly licensed individual who operates and maintains boilers and their appurtenances
60
Who rates relief valves and safety valves?
American Society of Mechanical Engineers
61
mechanical draft is produced by means of a blower or fan assembly
true
62
Where the heating surface cannot be discerned, the boiler horsepower shall be determined by calculating BTU boiler-rated input divided by _____.
67,000
63
a pressuretrol works by sensing the boilers ______
pressure
64
what is the function of a check valve?
allows flow in one direction
65
how often should a boiler be inspected?
once every year
66
who would you report a boiler condition too if you thought it was unsafe?
boiler inspector
67
A water column reduces turbulence to provide an accurate water level
True
68
What is the function of a siphon tube on a steam boiler gauge?
The siphon tube holds water
69
What is the function of the trycocks on a low water cutoff control?
Check the boiler water level
70
A Tri-Indicator could be found on a _____.
Hot water boiler