BOILER PRACTICE TEST 1
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT RATED A+ ||UPDATED 2026
Question: What is the technical definition of absolute pressure, and what standard
formula is used to calculate it?
Answer: ✔✔ Absolute pressure is equal to the measured gauge pressure plus the
local atmospheric pressure.
Question: By definition, the Maximum Allowable Working Pressure (MAWP) for
any boiler classified as a high-pressure steam power boiler must be greater than
what specific pressure threshold?
Answer: ✔✔ 15 PSIG (Note: Any steam boiler designed to operate at or below 15
PSIG is legally classified as a low-pressure boiler).
Question: According to the strict regulations of the ASME Boiler and Pressure
Vessel Code, a boiler must be equipped with two or more safety valves if its total
heating surface area exceeds how many square feet?
Answer: ✔✔ 500 square feet
Question: Which specific automated boiler control device monitors steam pressure
demand and directly regulates the burner to transition between high-fire and low-
fire positions?
Answer: ✔✔ The modulating pressure control (or modulating controller)
The water Column/Gauge Glass should be blown down ___________ -
ANSWER.....once per shift
, The primary function of the Low Water Fuel Cutoff is to ________________. -
ANSWER.....Shut down the burner if the water level drops.
The low water fuel cut off should be tested ____________________. -
ANSWER.....daily
Mechanical draft is produced by ________ -ANSWER.....power driven fans
High and low pressure gauges are calibrated in pounds per ____________ -
ANSWER.....square inch.
Combination force and induced draft is also known as ___________ draft. -
ANSWER.....balanced
Draft in a bolier is measured in ________ -ANSWER.....inches of water
The oldest form of draft used in a boiler is ___________ -ANSWER.....natural
Oxygen in the boiler water causes ________. -ANSWER.....pitting
A boiler that is priming has ___________ -ANSWER.....water carried over with
steam
The first thing a boiler operator should do when taking over a shift is ________ -
ANSWER.....check the boiler water level.
Preparation for a boiler inspection requires having the boiler __________ -
ANSWER.....drained, cooled, opened and thoroughly cleaned, etc.
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT RATED A+ ||UPDATED 2026
Question: What is the technical definition of absolute pressure, and what standard
formula is used to calculate it?
Answer: ✔✔ Absolute pressure is equal to the measured gauge pressure plus the
local atmospheric pressure.
Question: By definition, the Maximum Allowable Working Pressure (MAWP) for
any boiler classified as a high-pressure steam power boiler must be greater than
what specific pressure threshold?
Answer: ✔✔ 15 PSIG (Note: Any steam boiler designed to operate at or below 15
PSIG is legally classified as a low-pressure boiler).
Question: According to the strict regulations of the ASME Boiler and Pressure
Vessel Code, a boiler must be equipped with two or more safety valves if its total
heating surface area exceeds how many square feet?
Answer: ✔✔ 500 square feet
Question: Which specific automated boiler control device monitors steam pressure
demand and directly regulates the burner to transition between high-fire and low-
fire positions?
Answer: ✔✔ The modulating pressure control (or modulating controller)
The water Column/Gauge Glass should be blown down ___________ -
ANSWER.....once per shift
, The primary function of the Low Water Fuel Cutoff is to ________________. -
ANSWER.....Shut down the burner if the water level drops.
The low water fuel cut off should be tested ____________________. -
ANSWER.....daily
Mechanical draft is produced by ________ -ANSWER.....power driven fans
High and low pressure gauges are calibrated in pounds per ____________ -
ANSWER.....square inch.
Combination force and induced draft is also known as ___________ draft. -
ANSWER.....balanced
Draft in a bolier is measured in ________ -ANSWER.....inches of water
The oldest form of draft used in a boiler is ___________ -ANSWER.....natural
Oxygen in the boiler water causes ________. -ANSWER.....pitting
A boiler that is priming has ___________ -ANSWER.....water carried over with
steam
The first thing a boiler operator should do when taking over a shift is ________ -
ANSWER.....check the boiler water level.
Preparation for a boiler inspection requires having the boiler __________ -
ANSWER.....drained, cooled, opened and thoroughly cleaned, etc.
