Plumbing Level 4 Introduction to
Medical Gas and Vacuum Systems Test
Exam questions 2026 Exam Questions
and verified Answers
An example of a medical gas is - CORRECT ANSWERS Nitrous oxide
If failure of a medical gas system could cause serious injury or death, it is classified by NFPA 99 as a -
CORRECT ANSWERS Category 1 system
If failure of a medical gas system would have no effect on patient care, it is classified by NFPA 99 as a -
CORRECT ANSWERS Category 4 system
A plumber must be able to describe the test procedures required for brazed joints to qualify as a
medical gas systems - CORRECT ANSWERS Inspector
To begin the process of certification as a medical gas systems installer, a candidate must demonstrate
plumbing experience of at least - CORRECT ANSWERS Four years
The use of adapters or conversion fittings to adapt one gas-specific fitting to another - CORRECT
ANSWERS Is prohibited by code
The volumetric flow rate of medical gases through a system is measured using a - CORRECT ANSWERS
Flowmeter
An oxygen-rich environment is defined as one that contains a percentage of oxygen by volume higher
than - CORRECT ANSWERS 23.5
The temperature of the central supply system got nitrous oxide should never be less than -20°F or
higher than - CORRECT ANSWERS 125°F
Control panels and alarms for medical gas and systems must be installed by - CORRECT ANSWERS
Certified medical gas and vacuum systems installers
To prevent accidental use of the wrong gas, inlets and outlets for each gas type - CORRECT ANSWERS
Have different shapes
The best eye protection from all directions is provided by - CORRECT ANSWERS Safety
goggles
A single extinguisher that can be used to fight fires that involve liquids, gases, or ordinary combustibles
is labeled - CORRECT ANSWERS ABC
Medical Gas and Vacuum Systems Test
Exam questions 2026 Exam Questions
and verified Answers
An example of a medical gas is - CORRECT ANSWERS Nitrous oxide
If failure of a medical gas system could cause serious injury or death, it is classified by NFPA 99 as a -
CORRECT ANSWERS Category 1 system
If failure of a medical gas system would have no effect on patient care, it is classified by NFPA 99 as a -
CORRECT ANSWERS Category 4 system
A plumber must be able to describe the test procedures required for brazed joints to qualify as a
medical gas systems - CORRECT ANSWERS Inspector
To begin the process of certification as a medical gas systems installer, a candidate must demonstrate
plumbing experience of at least - CORRECT ANSWERS Four years
The use of adapters or conversion fittings to adapt one gas-specific fitting to another - CORRECT
ANSWERS Is prohibited by code
The volumetric flow rate of medical gases through a system is measured using a - CORRECT ANSWERS
Flowmeter
An oxygen-rich environment is defined as one that contains a percentage of oxygen by volume higher
than - CORRECT ANSWERS 23.5
The temperature of the central supply system got nitrous oxide should never be less than -20°F or
higher than - CORRECT ANSWERS 125°F
Control panels and alarms for medical gas and systems must be installed by - CORRECT ANSWERS
Certified medical gas and vacuum systems installers
To prevent accidental use of the wrong gas, inlets and outlets for each gas type - CORRECT ANSWERS
Have different shapes
The best eye protection from all directions is provided by - CORRECT ANSWERS Safety
goggles
A single extinguisher that can be used to fight fires that involve liquids, gases, or ordinary combustibles
is labeled - CORRECT ANSWERS ABC
