Lp installers practice exam
Where do you file a permit for work to be done in buildings owned or used by the State of Mass ? -
✔✔ correct answer State Inspector
When pressure testing a system over 1 million btu , which doesn't apply ? - ✔✔ correct answer Test
1 hour for each 200 ' of developed length
When a vent on a regulator , what is the horizontal distance from the discharge of the vent to an
opening located below ? - ✔✔ correct answer 3 feet
How many cycles do you need to keep continuing education certificates ? - ✔✔ correct answer 3
On an LP - Gas system , what is considered to be the " Point of Delivery " ? - ✔✔ correct answer
Outlet of 1st stage
How fast does a spill switch need to work ? - ✔✔ correct answer 30 seconds
If the firing rate in a combustion chamber exceeds 1,000,000 BTU , but less than 5,000,000 , what is
required ? - ✔✔ correct answer 2 shut offs in series , or one with overtravel interlock
When using gas pressure boosters , which of the following apply ? - ✔✔ correct answer All must
meet product - acceptance requirements The serving gas supplier has provided written authorization
Gas pressure boosters shall be located in well - ventilated spaces , and readily accessible
What percentage of vent height can the length of a single - walled vent connector be ? - ✔✔ correct
answer 75 %
What percentage of vent height can the length of Type B , double - walled vent connector be ? - ✔✔
correct answer 100 %
What is the max pressure for natural gas in a house ? - ✔✔ correct answer 14 " WC
Within how many feet of an appliance does the shut off need to be ? - ✔✔ correct answer 6'
, Lp installers practice exam
How far does a roof hatch need to be from the edge of a roof to not need guardrails ? - ✔✔ correct
answer 6'
What is the maximum pressure allowed for CSST . - ✔✔ correct answer 14 " WC
If the maximum firing rate per combustion chamber is ____ , BTU or greater , gas pressure
supervision provided by listed pressure switches or combination high / low switch , interlocked to
accomplish safety shutdown in event of either high or low pressure . - ✔✔ correct answer 1,000,000
Max spacing for support for CSST on a rooftop is every . - ✔✔ correct answer Blocks used for Support
48 "
A vacuum is considered to be any pressure that is - ✔✔ correct answer Less than atmospheric
pressure (14.7 psi)
If an UG gas line runs under a building , what is required ? - ✔✔ correct answer Conduit must
terminate outside building ,Sleeved in same material as pipe Terminate 4 ' above grade
Apprentice plumber , apprentice gas fitter , or MA Lic . LP Installer - ✔✔ correct answer Must show
license when asked by the Inspector
What is not an acceptable material for LPG piping - ✔✔ correct answer Butylenes
How far above a forced air inlet must a vent be terminated it within 10 ft horizontally ? - ✔✔ correct
answer 3 '
Can you vent into a mechanical vent under a positive pressure ? - ✔✔ correct answer no
What is not an acceptable material for LPG piping ? - ✔✔ correct answer Galvanized
How far above the floor must you have an opening for make - up air ? - ✔✔ correct answer < 12 "
How far can a relief discharge from a rigid LP gas regulator from a Building Opening below
discharge ? - ✔✔ correct answer 3'
Where do you file a permit for work to be done in buildings owned or used by the State of Mass ? -
✔✔ correct answer State Inspector
When pressure testing a system over 1 million btu , which doesn't apply ? - ✔✔ correct answer Test
1 hour for each 200 ' of developed length
When a vent on a regulator , what is the horizontal distance from the discharge of the vent to an
opening located below ? - ✔✔ correct answer 3 feet
How many cycles do you need to keep continuing education certificates ? - ✔✔ correct answer 3
On an LP - Gas system , what is considered to be the " Point of Delivery " ? - ✔✔ correct answer
Outlet of 1st stage
How fast does a spill switch need to work ? - ✔✔ correct answer 30 seconds
If the firing rate in a combustion chamber exceeds 1,000,000 BTU , but less than 5,000,000 , what is
required ? - ✔✔ correct answer 2 shut offs in series , or one with overtravel interlock
When using gas pressure boosters , which of the following apply ? - ✔✔ correct answer All must
meet product - acceptance requirements The serving gas supplier has provided written authorization
Gas pressure boosters shall be located in well - ventilated spaces , and readily accessible
What percentage of vent height can the length of a single - walled vent connector be ? - ✔✔ correct
answer 75 %
What percentage of vent height can the length of Type B , double - walled vent connector be ? - ✔✔
correct answer 100 %
What is the max pressure for natural gas in a house ? - ✔✔ correct answer 14 " WC
Within how many feet of an appliance does the shut off need to be ? - ✔✔ correct answer 6'
, Lp installers practice exam
How far does a roof hatch need to be from the edge of a roof to not need guardrails ? - ✔✔ correct
answer 6'
What is the maximum pressure allowed for CSST . - ✔✔ correct answer 14 " WC
If the maximum firing rate per combustion chamber is ____ , BTU or greater , gas pressure
supervision provided by listed pressure switches or combination high / low switch , interlocked to
accomplish safety shutdown in event of either high or low pressure . - ✔✔ correct answer 1,000,000
Max spacing for support for CSST on a rooftop is every . - ✔✔ correct answer Blocks used for Support
48 "
A vacuum is considered to be any pressure that is - ✔✔ correct answer Less than atmospheric
pressure (14.7 psi)
If an UG gas line runs under a building , what is required ? - ✔✔ correct answer Conduit must
terminate outside building ,Sleeved in same material as pipe Terminate 4 ' above grade
Apprentice plumber , apprentice gas fitter , or MA Lic . LP Installer - ✔✔ correct answer Must show
license when asked by the Inspector
What is not an acceptable material for LPG piping - ✔✔ correct answer Butylenes
How far above a forced air inlet must a vent be terminated it within 10 ft horizontally ? - ✔✔ correct
answer 3 '
Can you vent into a mechanical vent under a positive pressure ? - ✔✔ correct answer no
What is not an acceptable material for LPG piping ? - ✔✔ correct answer Galvanized
How far above the floor must you have an opening for make - up air ? - ✔✔ correct answer < 12 "
How far can a relief discharge from a rigid LP gas regulator from a Building Opening below
discharge ? - ✔✔ correct answer 3'
