CBET Medical Gas Systems 2

Question 1

What color is the standard pipeline and cylinder coding for medical oxygen in the United States?

Accepted Answer

Green

Answer

Yellow

Answer

Blue

Answer

White

Question 2

What is the purpose of a zone valve in a medical gas pipeline system?

Accepted Answer

To allow isolation of gas supply to a specific area for maintenance or emergencies without affecting the entire facility

Answer

To regulate gas pressure at each outlet

Answer

To mix gases to the correct concentration

Answer

To filter contaminants from the gas supply

Question 3

What safety system prevents connecting a medical gas cylinder to the wrong yoke or regulator?

Accepted Answer

Pin Index Safety System (PISS)

Answer

Color coding only

Answer

The cylinder label

Answer

The pressure gauge

Question 4

What does a medical gas alarm panel monitor and how should alarms be responded to?

Accepted Answer

Pipeline pressure, reserve supply status, and system conditions, requiring immediate investigation

Answer

Room temperature requiring HVAC adjustment

Answer

Individual cylinder levels for automatic reordering

Answer

Gas purity requiring filter replacement

Question 5

What is the standard operating pressure for medical gas pipeline systems (oxygen, air, nitrous oxide) in a US hospital?

Accepted Answer

50 psi

Answer

15 psi

Answer

100 psi

Answer

200 psi

Question 6

Why must oil and grease be kept away from oxygen equipment and fittings?

Accepted Answer

Oxygen is a powerful oxidizer and can cause spontaneous ignition of hydrocarbons under pressure

Answer

They can clog the gas outlets

Answer

They reduce the purity of the oxygen

Answer

They can corrode the metal fittings