RMGA Equipment Operation 5

Question 1

A medical gas outlet that uses a quick-connect mechanism but has no threaded connection is classified as which type?

Accepted Answer

Non-interchangeable quick-connect (NIQC) outlet

Answer

Non-interchangeable quick-connect (NIQC) outlets, including Schrader and proprietary designs, are gas-specific quick-connect outlets without threads.

Question 2

What is the maximum allowable pressure drop across a medical gas outlet under peak flow conditions per NFPA 99?

Accepted Answer

5 psig

Answer

NFPA 99 specifies that pressure at the outlet must not drop more than 5 psig below normal operating pressure at the maximum design flow rate.

Question 3

Which type of medical vacuum system uses water as a seal in the pump mechanism?

Accepted Answer

Liquid ring vacuum pump

Answer

Liquid ring vacuum pumps use a rotating ring of water to create compression chambers, making them tolerant of liquid carry-over in medical vacuum applications.

Question 4

An oxygen concentrator used as a medical gas source operates on which principle?

Accepted Answer

Pressure swing adsorption using molecular sieve material to separate nitrogen from air

Answer

Pressure swing adsorption (PSA) concentrators cycle molecular sieve beds that preferentially adsorb nitrogen, allowing high-concentration oxygen to pass through.

Question 5

When testing a medical gas pipeline for cross-connections, which method is used to confirm the correct gas is present at each outlet?

Accepted Answer

Gas-specific analyzer and labeling verification at each outlet while only one gas is pressurized at a time

Answer

Cross-connection testing requires flowing only one gas at a time and verifying its identity with an analyzer at every outlet throughout the facility.

(RMGA) Registered Medical Gas Administrator Certification Practice Test

(RMGA) Registered Medical Gas Administrator Certification Practice Test

RMGA Equipment Operation 5