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 ? - answer-State Inspector
When pressure testing a system over 1 million btu , which doesn't apply ? -
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 ? - answer-3 feet
How many cycles do you need to keep continuing education certificates ? -
answer-3
On an LP - Gas system , what is considered to be the " Point of Delivery " ? -
answer-Outlet of 1st stage
How fast does a spill switch need to work ? - 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 ? - answer-2 shut offs in series , or one
with overtravel interlock
When using gas pressure boosters , which of the following apply ? - 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 ? - answer-75 %
What percentage of vent height can the length of Type B , double - walled
vent connector be ? - answer-100 %
What is the max pressure for natural gas in a house ? - answer-14 " WC
Within how many feet of an appliance does the shut off need to be ? -
answer-6'
How far does a roof hatch need to be from the edge of a roof to not need
guardrails ? - answer-6'
What is the maximum pressure allowed for CSST . - 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 . - answer-1,000,000
Max spacing for support for CSST on a rooftop is every . - answer-Blocks used
for Support 48 "
A vacuum is considered to be any pressure that is - answer-Less than
atmospheric pressure (14.7 psi)
If an UG gas line runs under a building , what is required ? - 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 - answer-
Must show license when asked by the Inspector
What is not an acceptable material for LPG piping - answer-Butylenes
How far above a forced air inlet must a vent be terminated it within 10 ft
horizontally ? - answer-3 '
Can you vent into a mechanical vent under a positive pressure ? - answer-no
What is not an acceptable material for LPG piping ? - answer-Galvanized
How far above the floor must you have an opening for make - up air ? -
answer-< 12 "
How far can a relief discharge from a rigid LP gas regulator from a Building
Opening below discharge ? - answer-3'
Which method is not an approved method of connecting pipe ? - answer-
Soldered
Vent termination above a public walkway needs to terminate how high above
grade ? - answer-7 '
Decorative gas appliance in a vented fireplace must have ? - answer-Screen
door
When opening / adding to a gas system who must be notified prior to
commencing work ? - answer-Local Inspector
Where do you file a permit for work to be done in buildings owned or used by
the State of Mass ? - answer-State Inspector
When pressure testing a system over 1 million btu , which doesn't apply ? -
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 ? - answer-3 feet
How many cycles do you need to keep continuing education certificates ? -
answer-3
On an LP - Gas system , what is considered to be the " Point of Delivery " ? -
answer-Outlet of 1st stage
How fast does a spill switch need to work ? - 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 ? - answer-2 shut offs in series , or one
with overtravel interlock
When using gas pressure boosters , which of the following apply ? - 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 ? - answer-75 %
What percentage of vent height can the length of Type B , double - walled
vent connector be ? - answer-100 %
What is the max pressure for natural gas in a house ? - answer-14 " WC
Within how many feet of an appliance does the shut off need to be ? -
answer-6'
How far does a roof hatch need to be from the edge of a roof to not need
guardrails ? - answer-6'
What is the maximum pressure allowed for CSST . - 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 . - answer-1,000,000
Max spacing for support for CSST on a rooftop is every . - answer-Blocks used
for Support 48 "
A vacuum is considered to be any pressure that is - answer-Less than
atmospheric pressure (14.7 psi)
If an UG gas line runs under a building , what is required ? - 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 - answer-
Must show license when asked by the Inspector
What is not an acceptable material for LPG piping - answer-Butylenes
How far above a forced air inlet must a vent be terminated it within 10 ft
horizontally ? - answer-3 '
Can you vent into a mechanical vent under a positive pressure ? - answer-no
What is not an acceptable material for LPG piping ? - answer-Galvanized
How far above the floor must you have an opening for make - up air ? -
answer-< 12 "
How far can a relief discharge from a rigid LP gas regulator from a Building
Opening below discharge ? - answer-3'
Which method is not an approved method of connecting pipe ? - answer-
Soldered
Vent termination above a public walkway needs to terminate how high above
grade ? - answer-7 '
Decorative gas appliance in a vented fireplace must have ? - answer-Screen
door
When opening / adding to a gas system who must be notified prior to
commencing work ? - answer-Local Inspector
