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High Pressure Boilers Final Exam 12,12,19 with correct answers
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High Pressure Boilers Final Exam12,12,19 with correct answers
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
High Pressure Boilers Final Exam
12,12,19 with correct answers
, 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
The dry pipe separator is located in the __________ - ANSWER -- upper part of the steam drum
The ASME Code states that high pressure boilers in battery and equipped with manhole openings must
have __________ - ANSWER -- two main steam stop valves
A main steam stop valve should be a __________ - ANSWER -- os&y gate
Boiler safety valves are placed at the highest part of the __________ - ANSWER -- steam space
During boiler inspection, the main steam stop valves are __________ - ANSWER -- closed, locked, and
tagged
A pressure gauge must be recalibrated if it is not accurate to within __________% of the working
pressure - ANSWER -- 2
During normal usage, __________ are used to allow for the expansion and contraction of the main
steam line - ANSWER -- expansion bends
A main steam stop valve should be a gate valve because a gate valve __________ - ANSWER -- offers no
resistance to the flow of steam
A safety valve must be capable of discharging all the steam without the pressure increasing more than
__________% above the maximum MAWP - ANSWER -- 6
High Pressure Boilers Final Exam
12,12,19 with correct answers
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