Inspector Practice Exam Questions And

ASSE 6020 Medical Gas Systems Inspector Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary responsibility of a medical gas systems inspector?

a) Installing piping systems

b) Repairing gas outlets

c) Verifying installation compliance with NFPA 99 and ASSE standards

d) Certifying medical equipment

Rationale: The inspector ensures installations comply with NFPA 99

and ASSE 6000 standards for safety and functionality.

2. The ASSE 6020 certification is specifically intended for individuals who:

a) Design medical gas systems

b) Install and braze copper piping 1 / 4

c) Inspect completed medical gas and vacuum systems

d) Verify gas purity levels

Rationale: ASSE 6020 focuses on inspection and compliance

verification of completed systems, not installation or verification testing.

• According to NFPA 99, what is the maximum allowable leakage rate

for a medical gas piping system?

• 0.001 psi per minute
• 1 psi per hour
• 0 psi per hour (no leakage permitted)
• 2 psi per 24 hours

Rationale: NFPA 99 requires zero leakage in medical gas piping to

maintain patient safety.

• What is the minimum size for medical gas identification labels on

piping?

• ½ inch
• ¼ inch
• ¾ inch
• 1 inch

Rationale: NFPA 99 requires labels with at least ¾-inch lettering for

clear identification.

• The installer qualifications for medical gas systems are covered under

which ASSE standard? 2 / 4

a) ASSE 6010

b) ASSE 6030

c) ASSE 6010

d) ASSE 6050

Rationale: ASSE 6010 defines the qualifications for medical gas

system installers.

• What is the required color for oxygen pipeline identification?

a) Yellow

b) Green

c) Blue

d) White

Rationale: Oxygen piping is color-coded green according to NFPA 99

for quick recognition.

• What is the minimum distance between medical gas piping and

electrical conduits?

• 1 inch
• 3 inches
• 6 inches
• 12 inches

Rationale: NFPA 99 requires a minimum 6-inch separation to avoid

electrical interference and hazards.

• Who is responsible for the initial pressure test on new medical gas

piping installations? 3 / 4

a) The facility manager

b) The installer

c) The verifier

d) The inspector

Rationale: The installer must perform and document the initial

pressure test before verification.

• What type of tubing must be used for medical gas systems?

a) Type L copper

b) Type K copper

c) Type L or K copper, cleaned for oxygen service

d) Type M copper

Rationale: NFPA 99 allows Type L or K copper tubing cleaned for

oxygen service.

• What is the purpose of the source valve in a medical gas system?

a) Regulate gas pressure to the outlets

b) Prevent contamination

c) Isolate the entire system from the source equipment

d) Provide local outlet control

Rationale: The source valve allows isolation of the entire system for

maintenance or emergencies.

• Which of the following gases is color-coded yellow?

a) Oxygen

b) Medical air

• / 4