When pressurizing a system for leak testing, a safe maximum test pressure is typically ____

When pressurizing a system for leak testing, a safe maximum test pressure is typically _____.

A) 50
B) 75
C) 125
D) 250

[Ques. 2] When pressurizing a system for leak testing, the only refrigerant that can be used as a trace gas is _____.

A) HFC-410A
B) HFC-134a
C) HFC-407C
D) HCFC-22

[Ques. 3] When setting up a nitrogen cylinder to pressurize a system for leak detection, the relief valve between the
nitrogen regulator and gauge manifold should be set no higher than _____.

A) 75 psig
B) 150 psig
C) 200 psig
D) 250 psig

[Ques. 4] The requirement for an equipment owner to repair a significant refrigerant leak within 30 days can be waived if
the owner _____.

A) submits a plan for replacing the unit within one year
B) submits a plan for replacing the unit within 180 days
C) writes a letter explaining that the leak rate is only 50 percent of the charge per year
D) writes a letter explaining that the refrigerant in use is an HFC

[Ques. 5] Which refrigerant is due to be phased out (no new refrigerant manufactured) by 2030?

A) HFC-410A
B) HFC-407A
C) HCFC-22
D) HFC-417A

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When pressurizing a system for leak testing, a safe maximum test pressure is typically _____.

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