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

10 psi

Answer

15 psi

Answer

25 psi

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

Blue

Answer

Gray

Answer

Green

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

Compressor oil level

Answer

Ambient temperature of the compressor room

Answer

Filter replacement interval

Question 4

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

Accepted Answer

Pressure relief valve

Answer

Check valve

Answer

Zone valve

Answer

Backflow preventer

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

Apply vacuum to one outlet and check for flow at all others

Answer

Use a flow meter on each outlet simultaneously

Answer

Check gas purity with a gas analyzer at the source

Question 6

Which NFPA 99 health care facility category requires the highest level of medical gas system redundancy and emergency backup?

Accepted Answer

Category 1

Answer

Category 2

Answer

Category 3

Answer

Category 4

Question 7

What is the primary hazard of using a cylinder of compressed oxygen in an area with oil-contaminated fittings?

Accepted Answer

Risk of fire or explosion due to oxygen-enriched ignition of oil

Answer

Rapid depletion of oxygen supply

Answer

Increase in pipeline dew point

Answer

Back-pressure damage to the regulator