HANDS ON TEST: CONDUCTING THE
FOUR PROPANE TEST PROCEDURES
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT!!!
Question 1
What is the primary purpose of a Timed Pressure Drop Test?
Answer: It is used to determine if an LP-gas piping system is leak-free
before introducing full operating pressure.
Question 2
How is a Timed Pressure Drop Test performed?
Answer: Lower the system's internal pressure to $8\text{ in. WC}$ (using
your finger or the bleeder valve on the test apparatus to control the flow)
and monitor the gauge for 3 minutes to verify there is no pressure drop.
Question 3
What is the purpose of an Operating Pressure Test?
Answer: To determine what line pressure the system regulator is delivering
to downstream appliances while the system is actively running under load.
Question 4
What should the pressure reading be during an Operating Pressure Test, and
under what condition?
Answer: It should read approximately $11\text{ in. WC}$ while at least
50% of the system's total appliance load is operating.
Question 5
What is the purpose of a Lock-Up Pressure Test?
Answer: To verify the maximum pressure at which the regulator completely
shuts off (locks up) when all gas appliances are turned off and no propane is
FOUR PROPANE TEST PROCEDURES
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT!!!
Question 1
What is the primary purpose of a Timed Pressure Drop Test?
Answer: It is used to determine if an LP-gas piping system is leak-free
before introducing full operating pressure.
Question 2
How is a Timed Pressure Drop Test performed?
Answer: Lower the system's internal pressure to $8\text{ in. WC}$ (using
your finger or the bleeder valve on the test apparatus to control the flow)
and monitor the gauge for 3 minutes to verify there is no pressure drop.
Question 3
What is the purpose of an Operating Pressure Test?
Answer: To determine what line pressure the system regulator is delivering
to downstream appliances while the system is actively running under load.
Question 4
What should the pressure reading be during an Operating Pressure Test, and
under what condition?
Answer: It should read approximately $11\text{ in. WC}$ while at least
50% of the system's total appliance load is operating.
Question 5
What is the purpose of a Lock-Up Pressure Test?
Answer: To verify the maximum pressure at which the regulator completely
shuts off (locks up) when all gas appliances are turned off and no propane is
