15 psi - ANSWER-A low pressure steam boiler has a maximum allowable working pressure (MAWP) of up to ___.
One boiler horsepower - ANSWER-The evaporation of 34.5 lb of water/hr from and at a feedwater temperature of 212°F
through the tubes - ANSWER-In a firetube boiler, the heat and gases of ...
Boiler Exam Study Guide 1 with Complete Solutions
15 psi - ANSWER-A low pressure steam boiler has a maximum allowable working pressure (MAWP) of up to ___.
One boiler horsepower - ANSWER-The evaporation of 34.5 lb of water/hr from and at a feedwater temperature of 212°F
through the tubes - ANSWER-In a firetube boiler, the heat and gases of combustion pass ___.
in high or low pressure plants - ANSWER-A firetube boiler may be used ___.
a firetube boiler - ANSWER-Because of the large volume of water, the boiler most likely to cause a boiler explosion is ___.
firetube - ANSWER-A horizontal return tubular (HRT) boiler is a ___ boiler.
temperature - ANSWER-As steam pressure in a boiler increases, there is a corresponding increase in the ___.
a boiler explosion - ANSWER-A sudden drop in boiler steam pressure without a corresponding drop in boiler water temperature could result in ___.
heating surface - ANSWER-The part of a boiler that has the heat and gases of combustion on one side and water on the other side is known as the ___.
thermal - ANSWER-The comparison, or ratio, of heat supplied in fuel to heat absorbed by water is defined as ___ efficiency.
boiler heating surface - ANSWER-Baffles are designed to direct the gases of combustion so that they come into close contact with the ___.
stays - ANSWER-The steam and water drum of watertube boilers is dished (concave) to
eliminate the need for ___.
waterwalls - ANSWER-To increase the life of a furnace refractory, some watertube boilers are equipped with ___.
high ceilings, less floor space, and the use of staybolts - ANSWER-Vertical firetube boilers require ___. around the tubes - ANSWER-In a watertube boiler, the heat and gases of combustion pass ___.
firetube - ANSWER-The ___ boiler has a large volume of water in relation to horsepower size.
a firetube boiler (high or low pressure) - ANSWER-Stays and braces are needed to prevent bulging in ___.
watertube - ANSWER-The ___ boiler was developed to provide steam at higher pressures.
watertube - ANSWER-The mud drum is the lowest part of the water side of a(n) ___ boiler.
tensile - ANSWER-Boiler plates and staybolts are subjected to ___ stress.
American Society of Mechanical Engineers (ASME) - ANSWER-Safety valve connections must be approved by the ___.
safety and efficiency - ANSWER-Boiler fittings are necessary for ___.
safety valve - ANSWER-The most important fitting on a boiler is the ___.
safety valve - ANSWER-To prevent failure from pressure over the MAWP, all steam boilers must be equipped with at least one ___.
prevent the boiler from exceeding its MAWP - ANSWER-A safety valve will ___.
pop open - ANSWER-Safety valves are designed to ___.
before the main safety valves are set to open - ANSWER-Superheater safety valves are
set to open ___.
at least 75% of the popping pressure - ANSWER-When testing a safety valve by hand, there must be ___.
safety valve manufacturer or manufacturer's authorized representative - ANSWER-Any repairs to a safety valve should be done by the ___.
qualified person who is familiar with the contruction and operation of a safety valve - ANSWER-The setting or adjusting of a safety valve should only be done by the ___.
an accumulation test is put on the boiler - ANSWER-If it is necessary to test the relieving capacity of a safety valve, ___. pounds of steam per hour capable of discharging under a given pressure - ANSWER-
The relieving capacity of a safety valve is measured in ___.
reduce turbulence in the gauge glass to get a more accurate reading of the water level in the boiler - ANSWER-The main purpose of a water column is to ___.
a secondary means of determining water level in a boiler. - ANSWER-Try cocks are ___.
using the try cocks - ANSWER-When replacing a broken gauge glass, the water level is checked by ___.
once a shift - ANSWER-The water column and gauge glass should usually be blown down ___.
warn the operator of high or low water - ANSWER-A whistle valve is used to ___.
pounds per square inch - ANSWER-A steam pressure gauge is calibrated in ___.
high temperature of steam - ANSWER-A siphon protects the steam pressure gauge from ___.
0.433 - ANSWER-The pressure at the base of a vertical foot of water is ___ psi.
highest part of the steam side of the boiler - ANSWER-The boiler vent is located at the ___.
there is 10 to 15 psi of steam pressure on the boiler - ANSWER-The boiler vent is open when warming up a boiler until ___.
changing the direction of the steam flow - ANSWER-Steam separators work on the principle of ___.
upper part of the steam and water drum - ANSWER-The dry pipe is located in the ___.
boilers equipped with superheaters - ANSWER-Cyclone separators are used in ___.
its corresponding temperature and pressure - ANSWER-Saturated steam is steam at ___.
temperature increases with no increase in pressure - ANSWER-When steam is superheated the ___.
a continuous flow of steam - ANSWER-Superheater tubes are protected from warping or burning out by ___.
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