ASSE 6020 MEDICAL GAS SYSTEMS
INSPECTOR CERTIFICATION EXAM
QUESTION AND CORRECT
ANSWERS(VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A INSTANT
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1. The primary responsibility of an ASSE 6020 Medical Gas Systems Inspector
is to:
A. Install medical gas piping
B. Design medical gas systems
C. Train medical staff
D. Inspect and verify compliance of installed systems
Answer: D
Rationale: The ASSE 6020 inspector’s role is to inspect, test, and verify that
medical gas and vacuum systems comply with applicable codes and standards
before being placed into service.
2. Medical gas systems in healthcare facilities are primarily governed by which
standard?
A. NEC
B. OSHA
C. NFPA 99
D. ASME B31.3
Answer: C
Rationale: NFPA 99, Health Care Facilities Code, establishes requirements for
medical gas and vacuum systems.
, 3. Which document is most critical for verifying system compliance during
inspection?
A. Manufacturer brochures
B. As-built drawings
C. Purchase invoices
D. Employee training logs
Answer: B
Rationale: As-built drawings reflect the actual installed configuration and are
essential for inspection and verification.
4. Medical gas piping must be identified by:
A. Color only
B. Tags only
C. Color and labeling
D. Pipe size
Answer: C
Rationale: NFPA 99 requires both color coding and permanent labeling to clearly
identify medical gas piping.
5. Which gas is considered a life-supporting medical gas?
A. Nitrous oxide
B. Carbon dioxide
C. Oxygen
D. Nitrogen
Answer: C
Rationale: Oxygen is classified as a life-supporting medical gas due to its direct
impact on patient survival.
6. The minimum purity requirement for medical oxygen is:
A. 90%
B. 95%
C. 99%
D. 100%
Answer: B
Rationale: Medical oxygen must meet a minimum purity of 99% or USP
, standards, commonly referenced as 99%+; however NFPA often references
99%/USP, with 95% commonly associated with oxygen concentrators—
inspectors verify compliance with specified medical grade standards.
7. Which test must be performed before a medical gas system is placed into
service?
A. Visual inspection only
B. Pressure test only
C. Cross-connection test
D. Electrical continuity test
Answer: C
Rationale: Cross-connection testing ensures that no outlet delivers the wrong
gas, a critical safety requirement.
8. Who is permitted to perform final system verification?
A. Facility maintenance staff
B. Installing contractor
C. Certified medical gas verifier/inspector
D. Hospital administrator
Answer: C
Rationale: Only qualified and certified personnel are authorized to perform final
verification per NFPA 99.
9. Medical gas outlets must be tested for:
A. Color accuracy
B. Flow and pressure
C. Sound level
D. Temperature
Answer: B
Rationale: Outlet testing verifies that each outlet delivers the correct gas at the
proper pressure and flow.
10.Which component prevents reverse flow in medical gas systems?
A. Zone valve
B. Check valve
INSPECTOR CERTIFICATION EXAM
QUESTION AND CORRECT
ANSWERS(VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A INSTANT
DOWNLOAD PDF
1. The primary responsibility of an ASSE 6020 Medical Gas Systems Inspector
is to:
A. Install medical gas piping
B. Design medical gas systems
C. Train medical staff
D. Inspect and verify compliance of installed systems
Answer: D
Rationale: The ASSE 6020 inspector’s role is to inspect, test, and verify that
medical gas and vacuum systems comply with applicable codes and standards
before being placed into service.
2. Medical gas systems in healthcare facilities are primarily governed by which
standard?
A. NEC
B. OSHA
C. NFPA 99
D. ASME B31.3
Answer: C
Rationale: NFPA 99, Health Care Facilities Code, establishes requirements for
medical gas and vacuum systems.
, 3. Which document is most critical for verifying system compliance during
inspection?
A. Manufacturer brochures
B. As-built drawings
C. Purchase invoices
D. Employee training logs
Answer: B
Rationale: As-built drawings reflect the actual installed configuration and are
essential for inspection and verification.
4. Medical gas piping must be identified by:
A. Color only
B. Tags only
C. Color and labeling
D. Pipe size
Answer: C
Rationale: NFPA 99 requires both color coding and permanent labeling to clearly
identify medical gas piping.
5. Which gas is considered a life-supporting medical gas?
A. Nitrous oxide
B. Carbon dioxide
C. Oxygen
D. Nitrogen
Answer: C
Rationale: Oxygen is classified as a life-supporting medical gas due to its direct
impact on patient survival.
6. The minimum purity requirement for medical oxygen is:
A. 90%
B. 95%
C. 99%
D. 100%
Answer: B
Rationale: Medical oxygen must meet a minimum purity of 99% or USP
, standards, commonly referenced as 99%+; however NFPA often references
99%/USP, with 95% commonly associated with oxygen concentrators—
inspectors verify compliance with specified medical grade standards.
7. Which test must be performed before a medical gas system is placed into
service?
A. Visual inspection only
B. Pressure test only
C. Cross-connection test
D. Electrical continuity test
Answer: C
Rationale: Cross-connection testing ensures that no outlet delivers the wrong
gas, a critical safety requirement.
8. Who is permitted to perform final system verification?
A. Facility maintenance staff
B. Installing contractor
C. Certified medical gas verifier/inspector
D. Hospital administrator
Answer: C
Rationale: Only qualified and certified personnel are authorized to perform final
verification per NFPA 99.
9. Medical gas outlets must be tested for:
A. Color accuracy
B. Flow and pressure
C. Sound level
D. Temperature
Answer: B
Rationale: Outlet testing verifies that each outlet delivers the correct gas at the
proper pressure and flow.
10.Which component prevents reverse flow in medical gas systems?
A. Zone valve
B. Check valve
