MEDICAL GAS 6010 INSTALLER EXAM 2026/2027 & STUDY
GUIDE COMPLETE ACCURATE EXAM APPROVED QUESTIONS
WITH WELL ELABORATED ANSWERS WITH RATIONALES
(100% EXPERT VERIFIED SOLUTIONS) LATEST UPDATED
VERSION 2026 EDITION |GUARANTEED PAS A+
1. Which standard is the primary governing code for medical gas and vacuum piping systems in
healthcare facilities?
A) NFPA 70 (National Electrical Code)
B) NFPA 99 (Health Care Facilities Code)
C) OSHA 1910 (Occupational Safety and Health Standards)
D) ASHRAE 62.1 (Ventilation for Acceptable Indoor Air Quality)
CORRECT ANSWER: B
Rationale: NFPA 99 is the primary standard for health care facilities, specifically addressing medical
gas and vacuum systems. NFPA 70 covers electrical systems, OSHA 1910 covers general workplace
safety, and ASHRAE 62.1 covers ventilation standards.
2. What is the primary purpose of a medical gas zone valve?
A) To increase gas pressure in a specific zone
B) To control gas flow to a specific area for maintenance or emergencies
C) To filter impurities from the medical gas
D) To store medical gas for later use
CORRECT ANSWER: B
Rationale: Zone valves are strategically placed to isolate sections of a medical gas system. This allows
for maintenance, emergency shutoff, or system modifications without affecting the entire facility.
,3. According to NFPA 99, which color identifies medical oxygen piping?
A) Blue
B) Green
C) White
D) Yellow
CORRECT ANSWER: B
Rationale: Medical oxygen piping is identified with the color green in the U.S., per NFPA 99 standards.
White is used for oxygen piping in some older standards, but green is the current NFPA 99
requirement. Blue is typically used for nitrous oxide, and yellow is for medical vacuum.
4. What is required before brazing medical gas piping to prevent internal oxidation and contamination?
A) Use flux on all joints
B) Purge the piping with oxygen
C) Purge the piping with an inert gas such as nitrogen
D) Paint the joints with anti-corrosion coating
CORRECT ANSWER: C
Rationale: Purging the piping with an inert gas like oil‑free nitrogen displaces oxygen during brazing,
preventing internal oxidation (scale) and contamination. Flux is not permitted for medical gas brazing.
Oxygen purging would create a fire hazard, and painting joints does not prevent internal
contamination.
5. Medical gas piping must be cleaned and prepared to what condition?
A) Commercial grade
B) Oxygen‑clean condition
C) Industrial grade
D) Standard plumbing grade
CORRECT ANSWER: B
,Rationale: All medical gas piping must be cleaned for oxygen service (“oxygen ‑clean”) to prevent
combustion hazards. Contaminants such as oil, grease, or debris can ignite in high‑pressure oxygen
environments.
6. What is the standard test pressure for medical gas pipeline testing?
A) 50 psi
B) 100 psi
C) 150 psi
D) 200 psi
CORRECT ANSWER: C
Rationale: Pressure testing is typically conducted at 150 psi, or 1.5 times the normal working pressure,
to ensure system integrity.
7. Which device prevents reverse flow in medical gas systems?
A) Relief valve
B) Check valve
C) Zone valve
D) Flowmeter
CORRECT ANSWER: B
Rationale: Check valves ensure gas flows in one direction only, preventing reverse flow that could lead
to cross‑connection or contamination of the gas supply.
8. What is the certification requirement for installers of a Category 3 medical gas piped distribution
system?
A) ASSE 6010
B) ASSE 6020
C) ASSE 6030
D) Category 3 does not require certification
, CORRECT ANSWER: A
Rationale: All medical gas pipe distribution systems (Category 1, 2, and 3) require installers to be
qualified in accordance with ASSE 6010. There is no exception for Category 3.
9. The ASSE 6010 Installer credential is awarded after:
A) Completion of a 40‑hour training course only
B) A written exam only
C) A written exam and a practical brazing examination
D) A practical brazing examination only
CORRECT ANSWER: C
Rationale: The credential is awarded after passing both a proctored, closed‑book multiple‑choice
written examination and a practical brazing examination verified by a third‑party lab.
10. How many hours of training are typically required before taking the ASSE 6010 written exam?
A) 16 hours
B) 24 hours
C) 32 hours
D) 48 hours
CORRECT ANSWER: C
Rationale: The ASSE 6010 Medical Gas Installer course consists of 32 hours of training covering all
facets of ASSE Standard 6010 and NFPA 99.
11. The written examination for ASSE 6010 certification consists of how many multiple‑choice
questions?
A) 50 questions
B) 75 questions
C) 100 questions
GUIDE COMPLETE ACCURATE EXAM APPROVED QUESTIONS
WITH WELL ELABORATED ANSWERS WITH RATIONALES
(100% EXPERT VERIFIED SOLUTIONS) LATEST UPDATED
VERSION 2026 EDITION |GUARANTEED PAS A+
1. Which standard is the primary governing code for medical gas and vacuum piping systems in
healthcare facilities?
A) NFPA 70 (National Electrical Code)
B) NFPA 99 (Health Care Facilities Code)
C) OSHA 1910 (Occupational Safety and Health Standards)
D) ASHRAE 62.1 (Ventilation for Acceptable Indoor Air Quality)
CORRECT ANSWER: B
Rationale: NFPA 99 is the primary standard for health care facilities, specifically addressing medical
gas and vacuum systems. NFPA 70 covers electrical systems, OSHA 1910 covers general workplace
safety, and ASHRAE 62.1 covers ventilation standards.
2. What is the primary purpose of a medical gas zone valve?
A) To increase gas pressure in a specific zone
B) To control gas flow to a specific area for maintenance or emergencies
C) To filter impurities from the medical gas
D) To store medical gas for later use
CORRECT ANSWER: B
Rationale: Zone valves are strategically placed to isolate sections of a medical gas system. This allows
for maintenance, emergency shutoff, or system modifications without affecting the entire facility.
,3. According to NFPA 99, which color identifies medical oxygen piping?
A) Blue
B) Green
C) White
D) Yellow
CORRECT ANSWER: B
Rationale: Medical oxygen piping is identified with the color green in the U.S., per NFPA 99 standards.
White is used for oxygen piping in some older standards, but green is the current NFPA 99
requirement. Blue is typically used for nitrous oxide, and yellow is for medical vacuum.
4. What is required before brazing medical gas piping to prevent internal oxidation and contamination?
A) Use flux on all joints
B) Purge the piping with oxygen
C) Purge the piping with an inert gas such as nitrogen
D) Paint the joints with anti-corrosion coating
CORRECT ANSWER: C
Rationale: Purging the piping with an inert gas like oil‑free nitrogen displaces oxygen during brazing,
preventing internal oxidation (scale) and contamination. Flux is not permitted for medical gas brazing.
Oxygen purging would create a fire hazard, and painting joints does not prevent internal
contamination.
5. Medical gas piping must be cleaned and prepared to what condition?
A) Commercial grade
B) Oxygen‑clean condition
C) Industrial grade
D) Standard plumbing grade
CORRECT ANSWER: B
,Rationale: All medical gas piping must be cleaned for oxygen service (“oxygen ‑clean”) to prevent
combustion hazards. Contaminants such as oil, grease, or debris can ignite in high‑pressure oxygen
environments.
6. What is the standard test pressure for medical gas pipeline testing?
A) 50 psi
B) 100 psi
C) 150 psi
D) 200 psi
CORRECT ANSWER: C
Rationale: Pressure testing is typically conducted at 150 psi, or 1.5 times the normal working pressure,
to ensure system integrity.
7. Which device prevents reverse flow in medical gas systems?
A) Relief valve
B) Check valve
C) Zone valve
D) Flowmeter
CORRECT ANSWER: B
Rationale: Check valves ensure gas flows in one direction only, preventing reverse flow that could lead
to cross‑connection or contamination of the gas supply.
8. What is the certification requirement for installers of a Category 3 medical gas piped distribution
system?
A) ASSE 6010
B) ASSE 6020
C) ASSE 6030
D) Category 3 does not require certification
, CORRECT ANSWER: A
Rationale: All medical gas pipe distribution systems (Category 1, 2, and 3) require installers to be
qualified in accordance with ASSE 6010. There is no exception for Category 3.
9. The ASSE 6010 Installer credential is awarded after:
A) Completion of a 40‑hour training course only
B) A written exam only
C) A written exam and a practical brazing examination
D) A practical brazing examination only
CORRECT ANSWER: C
Rationale: The credential is awarded after passing both a proctored, closed‑book multiple‑choice
written examination and a practical brazing examination verified by a third‑party lab.
10. How many hours of training are typically required before taking the ASSE 6010 written exam?
A) 16 hours
B) 24 hours
C) 32 hours
D) 48 hours
CORRECT ANSWER: C
Rationale: The ASSE 6010 Medical Gas Installer course consists of 32 hours of training covering all
facets of ASSE Standard 6010 and NFPA 99.
11. The written examination for ASSE 6010 certification consists of how many multiple‑choice
questions?
A) 50 questions
B) 75 questions
C) 100 questions
