About 5% of feedwater, instead of flowing to the internal feed pipes, is fed to this
internal and is sprayed into the steam flowing to the steam outlet. The water spray
absorbs any gaseous impurities in the steam (ie. silica)
a. Continuous Blowdown Line
b. Steam Washer
c. Scrubber
d. Internal Feed Pipe
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b. Steam Washer
Gauge glasses are susceptible to corrosion caused by ______ and _____ in the water, at
higher temperatures.
a. caustic, calcium
,b. alkalinity, calcium
c. alkalinity, silica
b. caustic, silica
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c. alkalinity, silica
In this type of low water level cutoff, two electric probes or electrodes are immersed
in the water. These probes may be mounted directly on the boiler shell or water
column or in a special probe housing.
a. probe type
b. float operated
c. tested type
d. thermostatic
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a. probe type
Every steam outlet except the following, are equipped with a stop valve located as
close as possible to the boiler.
a. safety valve
b. reheater
c. superheater
d. all of the above
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, d. all of the above
Any drum internal that removes moisture and impurities from the steam is classified as:
a. first class
b. second class
c. fourth class
d. third class
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a. first class
This valve is designed to prevent a back flow of steam from the header to the boiler if
for any reason the boiler pressure drops below the header pressure. It is installed
when two or more boilers are connected to a common main.
a. globe stop valve
b. angle stop valve
c. gate stop valve
d. non return stop valve
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d. non return stop valve
This blowdown valve is a slow opening type. It features a rotating rising steam with an
attached disc on the bottom. The disc is free to rotate and mates with the valve seat in
the body.
, a. Sliding disc
b. Seatless sliding plunger
c. Seat and disc
d. Combination
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c. Seat and disc
This blowdown valve is classed as a quick opening type and must always be used in
conjunction with a slow opening valve. It may, however, be converted to a slow
opening valve by means of a hand wheel and gear arrangement, which can be used
in place of the operating lever.
a. Sliding disc
b. Seatless sliding plunger
c. Seat and disc
d. Combination
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a. Sliding disc
This blowdown valve is a slow opening type which requires at least five 360* turns of
the hand wheel to move from full-closed to full-open, and vice versa.
a. Sliding disc
b. Seatless sliding plunger
c. Seat and disc
d. Combination
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internal and is sprayed into the steam flowing to the steam outlet. The water spray
absorbs any gaseous impurities in the steam (ie. silica)
a. Continuous Blowdown Line
b. Steam Washer
c. Scrubber
d. Internal Feed Pipe
Give this one a try later!
b. Steam Washer
Gauge glasses are susceptible to corrosion caused by ______ and _____ in the water, at
higher temperatures.
a. caustic, calcium
,b. alkalinity, calcium
c. alkalinity, silica
b. caustic, silica
Give this one a try later!
c. alkalinity, silica
In this type of low water level cutoff, two electric probes or electrodes are immersed
in the water. These probes may be mounted directly on the boiler shell or water
column or in a special probe housing.
a. probe type
b. float operated
c. tested type
d. thermostatic
Give this one a try later!
a. probe type
Every steam outlet except the following, are equipped with a stop valve located as
close as possible to the boiler.
a. safety valve
b. reheater
c. superheater
d. all of the above
Give this one a try later!
, d. all of the above
Any drum internal that removes moisture and impurities from the steam is classified as:
a. first class
b. second class
c. fourth class
d. third class
Give this one a try later!
a. first class
This valve is designed to prevent a back flow of steam from the header to the boiler if
for any reason the boiler pressure drops below the header pressure. It is installed
when two or more boilers are connected to a common main.
a. globe stop valve
b. angle stop valve
c. gate stop valve
d. non return stop valve
Give this one a try later!
d. non return stop valve
This blowdown valve is a slow opening type. It features a rotating rising steam with an
attached disc on the bottom. The disc is free to rotate and mates with the valve seat in
the body.
, a. Sliding disc
b. Seatless sliding plunger
c. Seat and disc
d. Combination
Give this one a try later!
c. Seat and disc
This blowdown valve is classed as a quick opening type and must always be used in
conjunction with a slow opening valve. It may, however, be converted to a slow
opening valve by means of a hand wheel and gear arrangement, which can be used
in place of the operating lever.
a. Sliding disc
b. Seatless sliding plunger
c. Seat and disc
d. Combination
Give this one a try later!
a. Sliding disc
This blowdown valve is a slow opening type which requires at least five 360* turns of
the hand wheel to move from full-closed to full-open, and vice versa.
a. Sliding disc
b. Seatless sliding plunger
c. Seat and disc
d. Combination
Give this one a try later!
