Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
66 Cards in this Set
- Front
- Back
|
Boiler main steam stop valves should be ____ valves.
|
gate
|
|
|
Gate valves should always be _____ or _____ closed.
|
Wide open; completely
|
|
|
All boilers in battery must have two main steam stop valves or one main steam stop valve and one ______ .
|
automatic nonreturn valve
|
|
|
When open, an os&y gate valve offers ______ to the flow of steam.
|
no resistance
|
|
|
Steam traps are _____ devices.
|
automatic
|
|
|
______ allow movement caused from the heating and cooling of steam lines.
|
Expansion bends
|
|
|
Steam traps remove ____ and ____ from the steam lines.
|
air; water
|
|
|
Condensate in the steam lines can result in ________.
|
water hammer
|
|
|
A _____ valve is a type of globe valve that allows a boiler to be cut in on-line automatically when the boiler pressure is at or above the head pressure.
|
nonreturn
|
|
|
_____ is jacketing material used to protect pipe insulation from mechanical damage.
|
Lagging
|
|
|
Condensate from a nonreturn steam trap is pumped from the condensate return tank to the _________ .
|
boiler
|
|
|
Steam returning from the vacuum tank could cause the condensate pump to become _______ .
|
steambound
|
|
|
Steam strainers should be located on the steam line ________ .
|
before the steam trap
|
|
|
A(n) ___________ is a device used to test steam trap function by analyzing the sound waves emitted.
|
ultrasonic tester
|
|
|
When an os&y valve is open, the stem is in the ____ position.
|
up
|
|
|
A thermodynamic steam trap opens and closes by a ___________ .
|
movable disc
|
|
|
In a float thermostatic trap, the float rises to discharge ______________ .
|
condensate
|
|
|
A steam trap that fails to open causes the heating unit to become ______.
|
waterlogged
|
|
|
________ remove dirt and impurities that may cause the steam trap to malfunction.
|
Steam strainers
|
|
|
A(n) ______ is a device used to measure radiation emitted from an object.
|
infrared thermometer
|
|
|
An inverted bucket steam trap is a nonreturn trap.
|
True
|
|
|
A float thermostatic steam trap is a return trap.
|
False
|
|
|
A globe valve should never be used as a main steam stop valve.
|
True
|
|
|
Gate valves offer no restriction to flow when open.
|
True
|
|
|
A steam header is a distribution pipe that supplies steam to the branch lines.
|
True
|
|
|
Condensate in the steam lines helps to keep them clean.
|
False
|
|
|
Steam traps are located throughout the system after each device where steam is used.
|
True
|
|
|
Air trapped in the top of the bucket of an inverted bucket steam trap causes the steam trap to remain closed.
|
False
|
|
|
Return steam traps discharge condensate directly back to the boiler.
|
True
|
|
|
Return steam traps are commonly found in modern boiler plants.
|
False
|
|
|
Expansion bends are used to route steam lines around obstacles.
|
False
|
|
|
A steam strainer should be located after a steam trap.
|
False
|
|
|
Boiler main steam stop valves should be ____ valves.
|
gate
|
|
|
Gate valves should always be _____ or _____ closed.
|
Wide open; completely
|
|
|
All boilers in battery must have two main steam stop valves or one main steam stop valve and one ______ .
|
automatic nonreturn valve
|
|
|
When open, an os&y gate valve offers ______ to the flow of steam.
|
no resistance
|
|
|
Steam traps are _____ devices.
|
automatic
|
|
|
______ allow movement caused from the heating and cooling of steam lines.
|
Expansion bends
|
|
|
Steam traps remove ____ and ____ from the steam lines.
|
air; water
|
|
|
Condensate in the steam lines can result in ________.
|
water hammer
|
|
|
A _____ valve is a type of globe valve that allows a boiler to be cut in on-line automatically when the boiler pressure is at or above the head pressure.
|
nonreturn
|
|
|
_____ is jacketing material used to protect pipe insulation from mechanical damage.
|
Lagging
|
|
|
Condensate from a nonreturn steam trap is pumped from the condensate return tank to the _________ .
|
boiler
|
|
|
Steam returning from the vacuum tank could cause the condensate pump to become _______ .
|
steambound
|
|
|
Steam strainers should be located on the steam line ________ . |
before the steam trap |
|
|
A(n) ___________ is a device used to test steam trap function by analyzing the sound waves emitted.
|
ultrasonic tester
|
|
|
When an os&y valve is open, the stem is in the ____ position.
|
up
|
|
|
A thermodynamic steam trap opens and closes by a ___________ .
|
movable disc
|
|
|
In a float thermostatic trap, the float rises to discharge ______________ .
|
condensate
|
|
|
A steam trap that fails to open causes the heating unit to become ______.
|
waterlogged
|
|
|
________ remove dirt and impurities that may cause the steam trap to malfunction.
|
Steam strainers
|
|
|
A(n) ______ is a device used to measure radiation emitted from an object.
|
infrared thermometer
|
|
|
An inverted bucket steam trap is a nonreturn trap.
|
True
|
|
|
A float thermostatic steam trap is a return trap.
|
False
|
|
|
A globe valve should never be used as a main steam stop valve.
|
True
|
|
|
Gate valves offer no restriction to flow when open.
|
True
|
|
|
A steam header is a distribution pipe that supplies steam to the branch lines.
|
True
|
|
|
Condensate in the steam lines helps to keep them clean.
|
False
|
|
|
Steam traps are located throughout the system after each device where steam is used.
|
True
|
|
|
Air trapped in the top of the bucket of an inverted bucket steam trap causes the steam trap to remain closed.
|
False
|
|
|
Return steam traps discharge condensate directly back to the boiler.
|
True
|
|
|
Return steam traps are commonly found in modern boiler plants.
|
False
|
|
|
Expansion bends are used to route steam lines around obstacles.
|
False
|
|
|
A steam strainer should be located after a steam trap.
|
False
|
|
|
How do you calculate the temperature of saturated Steam by looking at a gauge? |
Calculate the square root of the gauge pressure times 14 plus 198 |
|
|
What is the formula x-press 10 letters for the linear expansion of piping? |
E equals constant times (T minus F) Where E is the expansion in inches per 100 foot of pipe, f is the starting temperature, and T is the final temperature. |
