High Pressure Boilers Final Exam || 50 QUESTIONS & ANSWERS|| 2024 LATEST UPDATE
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Course
High Pressure Boilers
Institution
High Pressure Boilers
Boiler fittings are necessary for __________ - ANSWER - efficiency
To prevent failure from pressure over the MAWP, all steam boilers must be equipped with at least one __________ - ANSWER - safety valve
The purpose of a safety valve is to __________ - ANSWER - prevent the boiler from exceeding
High Pressure Boilers Final Exam || 50
QUESTIONS & ANSWERS|| 2024 LATEST
UPDATE
Boiler fittings are necessary for __________ - ANSWER - efficiency
To prevent failure from pressure over the MAWP, all steam boilers must be equipped with at least one
__________ - ANSWER - safety valve
The purpose of a safety valve is to __________ - ANSWER - prevent the boiler from exceeding its MAWP
Safety valves are designed to __________ - ANSWER - pop open
When testing a safety valve manually, there must be __________ - ANSWER - at least 75% of the safety
valve popping pressure on the boiler
Any repairs to the safety valve must be done by the __________ - ANSWER - manufacturer-authorized
representative
A __________ test is used to test the relief capacity of a safety valve - ANSWER - accumulation
__________ pressure is the pressure caused by the weight of a column of water - ANSWER - hyrdrostatic
A cyclone separator is a cylindrical device that separates water droplets from steam using __________ -
ANSWER - centrifugal force
A steam pressure gauge must be protected by a siphon to prevent __________ - ANSWER - steam from
damaging the gauge
, The correction factor for hydrostatic pressure is __________ psi per vertical foot - ANSWER - .433
The boiler vent is open when warming up a boiler until __________ - ANSWER - there is 10 psi to 25 psi
of steam pressure on the boiler
Separators work on the basic principle of __________ - ANSWER - changing the direction of steam flow
A line desuperheater is used in conjunction with a _____. - ANSWER - pressure reducing station
Some plants are equipped with a _____ instead of a blowdown tank. - ANSWER - blow down separator.
If steam has a quality of _____%, it is 98% vapor and contains 2% water. - ANSWER - 98
In a heat recovery system, the _____ regulates the flow of makeup water to the flash economizer. -
ANSWER - proportioning valve
A 10° F rise in feed water temperature produces approximately _____% savings in fuel. - ANSWER - 1
A throttling calorimeter is used to directly measure the _____. - ANSWER - moisture content in steam
The flow of steam maintained through a super heater should never be less than _____% of boiler
capacity. - ANSWER - 25
When water is boiling, the water in the boiler and steam above it are at _____. - ANSWER - the same
temperature and pressure.
Water hammer is caused by _____ and can lead to a line rupture. - ANSWER - mixing steam and water
A steam trap usually has a _____ installed on the inlet line. - ANSWER - steam strainer
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