Medical Gas Systems Practice Exam 2026 – 220 Questions With Correct Answers

Medical Gas Systems Practice Exam Most Recent exam
COMPLETE (2026) EXAM Questions and Answers (Verified
Answers) (Latest Update )
Station outlets/inlets shall be identified as to the _______ for the specific gas or vacuum
provided.
a. Chemical symbol
b. Name
c. Name or chemical symbol
d. Piping type - CORRECT ANSWER ✔✔✔✔✔ c

When brazing, joints shall be continuously purged with oil-free, dry nitrogen NF to
prevent the formation of _______ on the inside surface of the joint.
a. Copper oxide
b. Crystalliation
c. Polymeric materials
d. Volatalized liquids - CORRECT ANSWER ✔✔✔✔✔ a

ASSE 6000 Annex J provides "Recommended Guidelines for Conducting Planned
Medical gas Systems Shutdown and Temporary Backfeed." Annex J guidelines do NOT
include a list of responsibilites for which types of worker?
a. Installer
b. Medical Gas Generalist
c. Shutdown Coordinator
d. Verifier - CORRECT ANSWER ✔✔✔✔✔ b

What is the standard gauge pressure (psi) for nitrogen gas service?
a. 15-30
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b. 50-55
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c. 160-185

EXAMPREPMASTER

,d. It varies with the system type - CORRECT ANSWER ✔✔✔✔✔ c

In a facility where medical gas or vacuum systems are present and the failure of such
equipment or system is likely to cause imminent major injury or death to patients or
caregivers, the system shall be designed to meet which Category of requirements?
a. 1
b. 2
c. 3
d. 4 - CORRECT ANSWER ✔✔✔✔✔ a

How many hours must the medical air compressor system be operating normally before
air quality test can be performed?
a. 2
b. 8
c. 12
d. 32 - CORRECT ANSWER ✔✔✔✔✔ c

Which of the following fittings is NOT permitted for joining vacuum distribution pipeline
systems?
a. Axially swaged
b. Memory metal
c. Non-removable push-fit
d. Welded - CORRECT ANSWER ✔✔✔✔✔ c

Medical air sources shall be used for ______ and human respiration.
a. Air-operating devices
b. Calibration of medical respiratory devices
c. Disinfecting tools.
d. Instrument air - CORRECT ANSWER ✔✔✔✔✔ b

In central supply systems using gas cylinders, each header shall have a __________
valve to prevent backflow and to permit service to the header.
a. Ball
b. Bypass
c. Check
d. Relief - CORRECT ANSWER ✔✔✔✔✔ c

Which type of connectors shall connect the medical air compressors with their intake
and outlet piping?
a. Compression fitting
b. Dielectric
c. Flexible
d. Insulated - CORRECT ANSWER ✔✔✔✔✔ c
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,WAGD networks shall provide a WAGD inlet in all locations where _____ is intended to
be administered.
a. Medical air
b. Nitrogen
c. Nitrous oxide
d. Oxygen - CORRECT ANSWER ✔✔✔✔✔ c

In a bulk supply system, when the cryogenic liquid reserve's contents are reduced to
one day's supply, which alarm system(s) shall be activated?
a. Area
b. Local
c. Master
d. Master and area - CORRECT ANSWER ✔✔✔✔✔ c

Which is a permitted use of the medical-surgical vacuum system?
a. Liquid or debris disposal
b. Non-medical or non-surgical applications
c. Vacuum steam condensate return
d. Waste anesthetic gas disposal - CORRECT ANSWER ✔✔✔✔✔ d

A ______ system is an assembly of equipment such as storage containers, pressure
regulators, pressure relief devices, vaporizers, manifolds, and interconnecting piping
that has a storage capacity of more than 20,000 cubic feet (at normal temperature and
pressure), including unconnected reserves on hand at the site.
a. Bulk oxygen
b. High pressure maniifold
c. Micro bulk
d. Vacuum - CORRECT ANSWER ✔✔✔✔✔ a

The purpose of the NFPA 99 Code is to provide minimum requirements for the _____
for facilities, material, equipment, and appliances, including other hazards associated
with the primary hazards.
a. Engineering and architecture
b. Maintenance and testing
c. Performance and safe practices
d. Both B and C - CORRECT ANSWER ✔✔✔✔✔ d

If a nonmetallic flexible connector is being used in a category 1 health care facility to
connect the manifold to the gas distribution piping, what is the maximum length (feet)
permitted for the flexible connector?
a. 2.5 feet
b. 5 feet
c. They shall be no longer than necessary
d. The use of flexible connectors is not permitted - CORRECT ANSWER ✔✔✔✔✔
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c

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, A new bulk system is to be installed at a local hospital. New, in compliance with NFPA
70, wiring will be installed underground from the initiating device to a junction box
located where the wiring first enters the building. NFPA 99 permits what minimum
number of sets of wires to connect the initiating device with the junction box for each
signal?
a. 1
b. 2
c. 3
d. 4 - CORRECT ANSWER ✔✔✔✔✔ a

Which of the following is an instrument air quality requirement?
a. It shall be compliant with instrument air section in ANSI/I SA S-7.0.01
b. It shall be dry to a dew point of -30 F
c. It shall be filtered to 0.7
d. It shall be compliant with medical air USP - CORRECT ANSWER ✔✔✔✔✔ a

Riser valves are those valves located where?
a. Adjacent to the main riser downstream of any zone valve
b. Anywhere in the lateral branches of the piping system
c. In the main line adjacent to the base of the riser
d. In the riser adjacent to the main line - CORRECT ANSWER ✔✔✔✔✔ d

Liquid containers shall have additional product identification (such as a 360 degree
wrap-a-round tape for medical liquid containers) visible from all directions with a
minimum of _____ high letters.
a. 1 inch
b. 2 inch
c. 3 inch
d. 4 inch - CORRECT ANSWER ✔✔✔✔✔ b

A bulk cryogenic supply contains parallel-piped duplex line regulators. Which of the
following is a requirement for the regulators?
a. A balanced design
b. Check valves on the source side of each regulator
c. Contains NO polymeric materials.
d. Each regulator sized for 110 percent of the peak calculated demand - CORRECT
ANSWER ✔✔✔✔✔ a

Which of these is a requirement for area alarm panels?
a. Located at a nurses station and in the engineering department
b. Monitored 24/7 continuously
c. Provide visual and audible indication
d. Provided in the area of air compressors and vacuum pumps. - CORRECT
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ANSWER ✔✔✔✔✔ c

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