RMGA Code Requirements 4

Question 1

NFPA 99 prohibits the use of which type of material in medical gas piping systems due to contamination risk?

Accepted Answer

Galvanized steel pipe

Answer

Galvanized steel pipe is prohibited in medical gas systems because zinc coating can flake off and contaminate gas flow.

Question 2

According to NFPA 99, which component must be installed between the central supply system and the distribution piping to prevent backflow?

Accepted Answer

A check valve

Answer

Check valves are required between the supply source and distribution piping to prevent gas from flowing backward into the supply system.

Question 3

Under NFPA 99, what is the maximum allowable pressure drop across a medical gas zone valve when fully open?

Accepted Answer

3 psi

Answer

NFPA 99 limits pressure drop across fully open zone valves to 3 psi to ensure adequate delivery pressure at outlet stations.

Question 4

Per NFPA 99, medical air compressor systems serving Category 1 facilities must include what redundancy feature?

Accepted Answer

Duplex or multiple compressor configuration

Answer

Category 1 medical air systems require duplex or multiple compressors so that one unit can maintain supply while another is serviced.

Question 5

Which NFPA 99 requirement applies to penetrations of fire-rated walls by medical gas piping?

Accepted Answer

Penetrations must be fire-stopped to restore wall rating

Answer

All penetrations of fire-rated walls, including medical gas piping, must be fire-stopped to restore the wall's rated integrity.

(RMGA) Registered Medical Gas Administrator Certification Practice Test