ASSE 6010 Medical Gas Systems
Installer Exam With Actual Questions &
Verified Answers, Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Updated/Instant Download Pdf
1. Which gas is commonly used for anesthesia in medical facilities?
A) Oxygen
B) Nitrous oxide
C) Carbon dioxide
D) Nitrogen
B) Nitrous oxide
Nitrous oxide is a primary anesthetic gas used in surgical and
dental procedures.
2. What color coding is standard for medical oxygen cylinders in the
U.S.?
A) Blue
B) Green
C) Yellow
D) Black
B) Green
Green is the NFPA and CGA standard color for oxygen cylinders
in the U.S.
,3. What is the maximum allowable leak rate for medical gas piping
systems?
A) 0.5% per year
B) 1% per year
C) 2% per year
D) 5% per year
C) 2% per year
NFPA 99 allows a maximum leak rate of 2% per year for medical
gas systems.
4. What type of fittings is typically used for medical gas copper
tubing?
A) Threaded fittings
B) Flared fittings
C) Compression fittings
D) Soldered fittings
B) Flared fittings
Flared fittings provide a secure, leak-free connection for medical
gas copper tubing.
5. What is the minimum wall thickness for copper tubing used in
medical gas systems?
A) K-type
B) L-type
C) M-type
D) DWV
A) K-type
K-type copper tubing is the thickest and suitable for medical gas
systems to prevent leaks and damage.
6. Which standard governs medical gas and vacuum systems
installation in healthcare facilities?
, A) NFPA 101
B) NFPA 99
C) ASME B31.3
D) OSHA 1910
B) NFPA 99
NFPA 99 sets the health care facilities code for medical gas and
vacuum systems.
7. How far must medical gas outlets be located from electrical
outlets?
A) 6 inches
B) 12 inches
C) 18 inches
D) 24 inches
C) 18 inches
NFPA 99 recommends at least 18 inches between medical gas
and electrical outlets to prevent interference.
8. What type of valve is used for main medical gas shutoff?
A) Needle valve
B) Ball valve
C) Globe valve
D) Gate valve
B) Ball valve
Ball valves provide reliable, quick shutoff for main medical gas
supply lines.
9. What is the purpose of a zone valve in medical gas piping?
A) Control flow to each floor or section
B) Measure pressure
C) Filter impurities
D) Convert gas type
, A) Control flow to each floor or section
Zone valves allow isolation of specific areas for maintenance
without shutting down the entire system.
10. What testing is required after installing medical gas piping?
A) Hydrostatic test
B) Vacuum test
C) Pressure and leak test
D) Flow rate test
C) Pressure and leak test
NFPA 99 requires medical gas piping to be tested for pressure
integrity and leaks before use.
11. Which gas uses a yellow cylinder in U.S. hospitals?
A) Nitrogen
B) Nitrous oxide
C) Medical air
D) Carbon dioxide
C) Medical air
Medical air is color-coded yellow to differentiate it from oxygen
and other gases.
12. What type of pipe support is recommended for horizontal
medical gas copper tubing?
A) Wire hanger
B) Unistrut with cushioned clamp
C) Rope support
D) Plastic strap
B) Unistrut with cushioned clamp
Cushioned Unistrut supports prevent vibration and stress on
copper tubing.
Installer Exam With Actual Questions &
Verified Answers, Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Updated/Instant Download Pdf
1. Which gas is commonly used for anesthesia in medical facilities?
A) Oxygen
B) Nitrous oxide
C) Carbon dioxide
D) Nitrogen
B) Nitrous oxide
Nitrous oxide is a primary anesthetic gas used in surgical and
dental procedures.
2. What color coding is standard for medical oxygen cylinders in the
U.S.?
A) Blue
B) Green
C) Yellow
D) Black
B) Green
Green is the NFPA and CGA standard color for oxygen cylinders
in the U.S.
,3. What is the maximum allowable leak rate for medical gas piping
systems?
A) 0.5% per year
B) 1% per year
C) 2% per year
D) 5% per year
C) 2% per year
NFPA 99 allows a maximum leak rate of 2% per year for medical
gas systems.
4. What type of fittings is typically used for medical gas copper
tubing?
A) Threaded fittings
B) Flared fittings
C) Compression fittings
D) Soldered fittings
B) Flared fittings
Flared fittings provide a secure, leak-free connection for medical
gas copper tubing.
5. What is the minimum wall thickness for copper tubing used in
medical gas systems?
A) K-type
B) L-type
C) M-type
D) DWV
A) K-type
K-type copper tubing is the thickest and suitable for medical gas
systems to prevent leaks and damage.
6. Which standard governs medical gas and vacuum systems
installation in healthcare facilities?
, A) NFPA 101
B) NFPA 99
C) ASME B31.3
D) OSHA 1910
B) NFPA 99
NFPA 99 sets the health care facilities code for medical gas and
vacuum systems.
7. How far must medical gas outlets be located from electrical
outlets?
A) 6 inches
B) 12 inches
C) 18 inches
D) 24 inches
C) 18 inches
NFPA 99 recommends at least 18 inches between medical gas
and electrical outlets to prevent interference.
8. What type of valve is used for main medical gas shutoff?
A) Needle valve
B) Ball valve
C) Globe valve
D) Gate valve
B) Ball valve
Ball valves provide reliable, quick shutoff for main medical gas
supply lines.
9. What is the purpose of a zone valve in medical gas piping?
A) Control flow to each floor or section
B) Measure pressure
C) Filter impurities
D) Convert gas type
, A) Control flow to each floor or section
Zone valves allow isolation of specific areas for maintenance
without shutting down the entire system.
10. What testing is required after installing medical gas piping?
A) Hydrostatic test
B) Vacuum test
C) Pressure and leak test
D) Flow rate test
C) Pressure and leak test
NFPA 99 requires medical gas piping to be tested for pressure
integrity and leaks before use.
11. Which gas uses a yellow cylinder in U.S. hospitals?
A) Nitrogen
B) Nitrous oxide
C) Medical air
D) Carbon dioxide
C) Medical air
Medical air is color-coded yellow to differentiate it from oxygen
and other gases.
12. What type of pipe support is recommended for horizontal
medical gas copper tubing?
A) Wire hanger
B) Unistrut with cushioned clamp
C) Rope support
D) Plastic strap
B) Unistrut with cushioned clamp
Cushioned Unistrut supports prevent vibration and stress on
copper tubing.
