ALBERTA BOILERS SAFETY ASSOCIATION 2026
PRACTICE TEST QUESTIONS AND DETAILED
BOILER SYSTEMS SAFETY VALVES AND
MAINTENANCE BREAKDOWN FULL REVIEW
◉ The Manufacturer. Answer: LP boiler safety valves can be repaired
by this
◉ Steam pressure acting on the disk of the valve. Answer: A boiler
steam drum safety valve opens by means of
◉ Screw the blow down ring downwards. Answer: To raise only the
closing pressure of the valve, one would
◉ Perform an accumulation test. Answer: If you are not sure that the
safety valves are of sufficient capacity for the boiler, you would
◉ Lip. Answer: A part on a safety valve that allows it to pop open
◉ Pressure is up to at least 34 kPa. Answer: On steam heating
boilers, the safety valve test lever must not be used unless
,◉ Monthly. Answer: A steam heating boiler safety valve lever test
should be performed
◉ 20 kPa. Answer: For hot water boilers operating up to 400 kPa, a
pressure relief valve opening pressure tolerance may be as much as
◉ Blowdown of a Safety Valve. Answer: Defined as the difference
between opening and closing pressures
◉ Suddenly increased due to a larger area. Answer: Safety valves
"pop" open because the force of the steam is
◉ 6%. Answer: Safety valves must be large enough to discharge all
the steam a boiler can produce without allowing the pressure to
exceed the maximum allowable working pressure by more than
◉ DN 15 (½ in). Answer: According to the current code no safety
valve on a steam heating boiler shall be smaller than
◉ DN 100 (4 in). Answer: According to the current code no safety
valve on a steam heating boiler shall be larger than
◉ Operate the test lever two or three times in order to allow the disk
to seat. Answer: After checking a safety valve using the try lever, the
, valve continues to simmer after closing. In order to close the valve
fully the operator should
◉ Increased or decreased by up to 5%. Answer: The popping
pressure of a safety valve may be
◉ Manufacturer Representative. Answer: The only person who can
adjust the opening pressure or popping point of a safety valve is a
◉ At least two. Answer: If a boiler has 57 square metres of heating
surface, it must have ___________ safety valves
◉ Increase the amount of blowdown. Answer: Raising the blowdown
ring on a pop safety valve will
◉ Vertical. Answer: The safety valve on steam boiler shall be
installed in the _____ position and located in the highest practicable
part of the heating boiler proper
◉ Stop Valve. Answer: Device that is NOT allowed before or after the
safety valve
PRACTICE TEST QUESTIONS AND DETAILED
BOILER SYSTEMS SAFETY VALVES AND
MAINTENANCE BREAKDOWN FULL REVIEW
◉ The Manufacturer. Answer: LP boiler safety valves can be repaired
by this
◉ Steam pressure acting on the disk of the valve. Answer: A boiler
steam drum safety valve opens by means of
◉ Screw the blow down ring downwards. Answer: To raise only the
closing pressure of the valve, one would
◉ Perform an accumulation test. Answer: If you are not sure that the
safety valves are of sufficient capacity for the boiler, you would
◉ Lip. Answer: A part on a safety valve that allows it to pop open
◉ Pressure is up to at least 34 kPa. Answer: On steam heating
boilers, the safety valve test lever must not be used unless
,◉ Monthly. Answer: A steam heating boiler safety valve lever test
should be performed
◉ 20 kPa. Answer: For hot water boilers operating up to 400 kPa, a
pressure relief valve opening pressure tolerance may be as much as
◉ Blowdown of a Safety Valve. Answer: Defined as the difference
between opening and closing pressures
◉ Suddenly increased due to a larger area. Answer: Safety valves
"pop" open because the force of the steam is
◉ 6%. Answer: Safety valves must be large enough to discharge all
the steam a boiler can produce without allowing the pressure to
exceed the maximum allowable working pressure by more than
◉ DN 15 (½ in). Answer: According to the current code no safety
valve on a steam heating boiler shall be smaller than
◉ DN 100 (4 in). Answer: According to the current code no safety
valve on a steam heating boiler shall be larger than
◉ Operate the test lever two or three times in order to allow the disk
to seat. Answer: After checking a safety valve using the try lever, the
, valve continues to simmer after closing. In order to close the valve
fully the operator should
◉ Increased or decreased by up to 5%. Answer: The popping
pressure of a safety valve may be
◉ Manufacturer Representative. Answer: The only person who can
adjust the opening pressure or popping point of a safety valve is a
◉ At least two. Answer: If a boiler has 57 square metres of heating
surface, it must have ___________ safety valves
◉ Increase the amount of blowdown. Answer: Raising the blowdown
ring on a pop safety valve will
◉ Vertical. Answer: The safety valve on steam boiler shall be
installed in the _____ position and located in the highest practicable
part of the heating boiler proper
◉ Stop Valve. Answer: Device that is NOT allowed before or after the
safety valve
