Texas Tradesman Exam Prep 2025
updated well answered
What is the spacing(in feet) required for an 1 1/4" or larger steel pipe(on a horizontal) - correct
answer ✔✔ 10 feet
How many feet from the appliance should a shut off valve be installed - correct answer ✔✔ 6
feet from the device it serve
What is the spacing(in feet) required for 1/2" for steel pipe? - correct answer ✔✔ 6 feet
What is the spacing(in feet) required for 3/4" or 1" steel pipe? - correct answer ✔✔ 8 feet
What are some ways to search for leakage on a gas piping system - correct answer ✔✔
Approved gas detector, a noncorrosive leak detection fluid, or other approved detection
methods
What should you do in the event of a leakage or defect found in the piping system? - correct
answer ✔✔ Make the necessary repair and retest the line
What should you check for before turning the gas back on? - correct answer ✔✔ Open fittings
and ends and that all valves at unused outlets are closed and plugged or capped.
When should equipment and appliances be placed into operation? - correct answer ✔✔ Not
until it has been checked for leaks and the piping system has been purged
, What should the test pressure on gas line be? - correct answer ✔✔ Not less than 1 1/2" time
the proposed maximum working pressure, but not less than 3psig.
How long should the test for gas last? - correct answer ✔✔ Not less than 10 minuets
Inspection shall consist of? - correct answer ✔✔ Visual examinations, during or after
manufacture, fabrication, assembly or pressure test
When testing a gas line what test mediums are allowed? - correct answer ✔✔ Air, nitrogen,
carbon dioxide, and other inert gas.
When testing a gas line what test medium(s) are not allowed? - correct answer ✔✔ Oxygen
What should be provided on all appliances? - correct answer ✔✔ Shut off valves
If a common system is serving more than one building what should be installed? - correct
answer ✔✔ Shut off valves shall be installed outdoors at each building
Where are shut off valves prohibited? - correct answer ✔✔ Concealed locations
Where should shut off valves be installed? - correct answer ✔✔ Located in places so as to
provide access for operations and shall be installed so as to be protected from damage
Where should a sediment trap be installed - correct answer ✔✔ Down stream of an appliance
shut off valve as close to the inlet appliance as practical.
Plumbing fixtures, drains, appurtenances, and appliances used to receive or discharge liquid
wastes or sewage shall be? - correct answer ✔✔ Directly connected to the sanitary drainage
system of the building or premises
updated well answered
What is the spacing(in feet) required for an 1 1/4" or larger steel pipe(on a horizontal) - correct
answer ✔✔ 10 feet
How many feet from the appliance should a shut off valve be installed - correct answer ✔✔ 6
feet from the device it serve
What is the spacing(in feet) required for 1/2" for steel pipe? - correct answer ✔✔ 6 feet
What is the spacing(in feet) required for 3/4" or 1" steel pipe? - correct answer ✔✔ 8 feet
What are some ways to search for leakage on a gas piping system - correct answer ✔✔
Approved gas detector, a noncorrosive leak detection fluid, or other approved detection
methods
What should you do in the event of a leakage or defect found in the piping system? - correct
answer ✔✔ Make the necessary repair and retest the line
What should you check for before turning the gas back on? - correct answer ✔✔ Open fittings
and ends and that all valves at unused outlets are closed and plugged or capped.
When should equipment and appliances be placed into operation? - correct answer ✔✔ Not
until it has been checked for leaks and the piping system has been purged
, What should the test pressure on gas line be? - correct answer ✔✔ Not less than 1 1/2" time
the proposed maximum working pressure, but not less than 3psig.
How long should the test for gas last? - correct answer ✔✔ Not less than 10 minuets
Inspection shall consist of? - correct answer ✔✔ Visual examinations, during or after
manufacture, fabrication, assembly or pressure test
When testing a gas line what test mediums are allowed? - correct answer ✔✔ Air, nitrogen,
carbon dioxide, and other inert gas.
When testing a gas line what test medium(s) are not allowed? - correct answer ✔✔ Oxygen
What should be provided on all appliances? - correct answer ✔✔ Shut off valves
If a common system is serving more than one building what should be installed? - correct
answer ✔✔ Shut off valves shall be installed outdoors at each building
Where are shut off valves prohibited? - correct answer ✔✔ Concealed locations
Where should shut off valves be installed? - correct answer ✔✔ Located in places so as to
provide access for operations and shall be installed so as to be protected from damage
Where should a sediment trap be installed - correct answer ✔✔ Down stream of an appliance
shut off valve as close to the inlet appliance as practical.
Plumbing fixtures, drains, appurtenances, and appliances used to receive or discharge liquid
wastes or sewage shall be? - correct answer ✔✔ Directly connected to the sanitary drainage
system of the building or premises
