The pressure in a system measured when the gas is moving, is known as? - Answer-Working Pressure
Other than a central boiler room or mechanical room, what is the maximum allowable gas pressure inside commercial buildings? - Answer-20 psig
what is the pressure test requirement for a 1 inch gas...
Advanced Piping Exam Questions and
Answers
The pressure in a system measured when the gas is moving, is known as? - Answer-
Working Pressure
Other than a central boiler room or mechanical room, what is the maximum allowable
gas pressure inside commercial buildings? - Answer-20 psig
what is the pressure test requirement for a 1 inch gas line with 2 psig of working
pressure over 200 feet long? - Answer-15 psig
how long is the duration for question 3? - Answer-60 Minutes or 1 Hour
When performing a 50 psig pressure test, what is the minimum gage range acceptable?
- Answer-57.5 psig
What is the minimum diameter size a pressure gage can be when performing a
pressure test? - Answer-Minimum 3 inches
Piping having a nominal diameter of less then 1/2 NPS shall not be used underground. -
Answer-True
Underground piping or tubing shall not be less then ____________ under a commercial
driveway or parking lot. - Answer-2 Feet
What is the maximum spacing support required for 1 inch horizontal gas pipe? -
Answer-8 Feet
Where does rooftop piping need to be supported? - Answer-At each change of direction
and each threaded connection.
A Test Firing Valve will be located... - Answer-Upstream of the burners and
Downstream of the gas valve.
What is the minimum copper wire size required for bonding (grounding) gas pipe? -
Answer-6 AWG
At what size pipe do you have to start welding and stop threading? - Answer-2 1/2 Inch
Pipe
Schedule 40 pipe is thicker then schedule 80. - Answer-False
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