CBET Medical Gas Systems 4

Question 1

What is the maximum allowable pressure drop across a zone valve in a medical gas piping system under full flow conditions per NFPA 99?

Accepted Answer

5 psi

Answer

NFPA 99 requires that zone valve pressure drop not exceed 5 psi under full-flow conditions to maintain adequate downstream pressure.

Question 2

Which color-coded label is assigned to nitrous oxide piping in a US hospital per NFPA 99 and CGA standards?

Accepted Answer

Light blue

Answer

Nitrous oxide piping is identified with a light blue label per CGA C-9 and NFPA 99 to distinguish it from oxygen (green) and medical air (yellow).

Question 3

A biomedical technician is verifying a medical air compressor system. Which parameter must be continuously monitored and alarmed per NFPA 99?

Accepted Answer

Dew point of the air supply

Answer

NFPA 99 requires continuous monitoring and alarming of the dew point of medical air to ensure adequate moisture removal and prevent contamination.

Question 4

In a bulk liquid oxygen system, what safety device prevents overpressure in the storage vessel?

Accepted Answer

Pressure relief valve

Answer

Pressure relief valves are required on bulk liquid oxygen storage vessels to vent excess pressure and prevent catastrophic failure.

Question 5

When performing a cross-connection test on a newly installed medical gas system, which method is used to verify outlet identity?

Accepted Answer

Pressurize one gas at a time and verify only labeled outlets flow that gas

Answer

Cross-connection testing pressurizes one gas source at a time while verifying that only the correctly labeled outlets supply that gas and no cross-flow occurs.

CBET - Certified Biomedical Equipment Technician Practice Test

CBET - Certified Biomedical Equipment Technician Practice Test

CBET Medical Gas Systems 4