Test 1-2 Medical Gas Systems Exam
Questions with correct Answers
2026/2027 A+ Graded 100% Verified
Two ways in which gas is supplied? - ANS -1. Pipeline system (primary)
2. Cylinder (emergency or mobile)
1. What gas supply is compressed?
2. Is it liquid or gas? - ANS -1. Cylinder gas
2. Could be either
oxygen--> gas
nitrous oxide--> liquid
What do the following terms stand for?
1. Psi
2.*Psig*
3. Psia - ANS -1. Pounds per square inch
2. *Pounds per square inch gauge*
3. Pounds per square inch absolute (absolute pressure)
*Pounds per square inch gauge (psig) formula* - ANS -Difference between the measured
pressure and the surrounding atmospheric pressure
1. What are most gauges set at for Psig?
2. Psia definition: absolute pressure based on a ______ reference point
3. What are the components of Psia? - ANS -1. 0
2. 0
,3. Psig + atmospheric pressure
1. A *compressed* gas will have an absolute pressure exceeding ______ PSIa at 70
degrees fahrenheit or ______ PSIa at 130 degrees fahrenheit
2. It would also have a vapor pressure of _______ mmHg at ______ degrees farhenheit -
ANS -1. 40; 104
2. 40; 70
*What is the definition of service pressure?* - ANS -*max filling pressure of a cylinder at
70 degrees fahrenheit*
-- do not surpass service pressure when refilling
Define:
1. Non-liquefied compressed gas
2. Examples of non-liquefied compressed gas? (4) - ANS -1. *doesn't liquify at normal
temp or under pressures up to 2500 PSIG*
2.
-*Nitrogen* (not N2O)
-*Oxygen*
-Air
-Helium
(NOAH wasn't liquified in the flood) awesome
1. Liquefied compressed gas
2. *Examples of liquefied compressed gas?* (2) - ANS -1. Becomes liquid in containers at
normal temp and pressures from 25-1500 PSIG
2.
-*N2O*
-CO2
Medical gas cylinder - ANS -Tank containing a *high pressure* gas or gas mixture at a
pressure that may be in excess of 2000 PSIG
Medical gas container - ANS -*Low pressure*, vacuum insulated vessel (to help keep
cold) that contains gas or gases in liquid form; uses a lot less space
--> No high pressure
, 1. Example of a medical gas container?
2. Only type of cylinder that can go on the back of an anesthesia machine? - ANS -1.
Liquid oxygen tank
2. E-cylinder
Which regulatory agency defines purity specifications of medical gases? - ANS
-Pharmacopoeia of the United States
(USP; never realized that's what USP stood for on drug labels)
1. Which regulatory agency regulates medical gases?
2. Why is this? - ANS -1. Food & Drug Administration (FDA)
2. Medical gases are considered drugs
Which agency sets the standard and regulations for the central pipeline piping systems?
- ANS -National Fire and Protection Association
(Book: compressed gas association as well; CGA)
Which regulatory agency sets specifications of design, construction, testing, marking,
labeling, filling, qualification, storage, handling, maintenance, transportation, and overall
deposition of the gas containers and cylinders - ANS -Department of Transportation
(DOT)
Which regulatory agency ensures that each facility is meeting the DOT, FDA, and
Pharmacopoeia of the United States Standards - ensure compliance of standards - ANS
-JCAHO
(Don't set any standards themselves, just make sure you're in compliance with the
standards)
What are medical gas cylinders made of? (2) - ANS -Steel or aluminum (lighter weight)
Define
1. Valve. What is it made of? (2)
2. port
Questions with correct Answers
2026/2027 A+ Graded 100% Verified
Two ways in which gas is supplied? - ANS -1. Pipeline system (primary)
2. Cylinder (emergency or mobile)
1. What gas supply is compressed?
2. Is it liquid or gas? - ANS -1. Cylinder gas
2. Could be either
oxygen--> gas
nitrous oxide--> liquid
What do the following terms stand for?
1. Psi
2.*Psig*
3. Psia - ANS -1. Pounds per square inch
2. *Pounds per square inch gauge*
3. Pounds per square inch absolute (absolute pressure)
*Pounds per square inch gauge (psig) formula* - ANS -Difference between the measured
pressure and the surrounding atmospheric pressure
1. What are most gauges set at for Psig?
2. Psia definition: absolute pressure based on a ______ reference point
3. What are the components of Psia? - ANS -1. 0
2. 0
,3. Psig + atmospheric pressure
1. A *compressed* gas will have an absolute pressure exceeding ______ PSIa at 70
degrees fahrenheit or ______ PSIa at 130 degrees fahrenheit
2. It would also have a vapor pressure of _______ mmHg at ______ degrees farhenheit -
ANS -1. 40; 104
2. 40; 70
*What is the definition of service pressure?* - ANS -*max filling pressure of a cylinder at
70 degrees fahrenheit*
-- do not surpass service pressure when refilling
Define:
1. Non-liquefied compressed gas
2. Examples of non-liquefied compressed gas? (4) - ANS -1. *doesn't liquify at normal
temp or under pressures up to 2500 PSIG*
2.
-*Nitrogen* (not N2O)
-*Oxygen*
-Air
-Helium
(NOAH wasn't liquified in the flood) awesome
1. Liquefied compressed gas
2. *Examples of liquefied compressed gas?* (2) - ANS -1. Becomes liquid in containers at
normal temp and pressures from 25-1500 PSIG
2.
-*N2O*
-CO2
Medical gas cylinder - ANS -Tank containing a *high pressure* gas or gas mixture at a
pressure that may be in excess of 2000 PSIG
Medical gas container - ANS -*Low pressure*, vacuum insulated vessel (to help keep
cold) that contains gas or gases in liquid form; uses a lot less space
--> No high pressure
, 1. Example of a medical gas container?
2. Only type of cylinder that can go on the back of an anesthesia machine? - ANS -1.
Liquid oxygen tank
2. E-cylinder
Which regulatory agency defines purity specifications of medical gases? - ANS
-Pharmacopoeia of the United States
(USP; never realized that's what USP stood for on drug labels)
1. Which regulatory agency regulates medical gases?
2. Why is this? - ANS -1. Food & Drug Administration (FDA)
2. Medical gases are considered drugs
Which agency sets the standard and regulations for the central pipeline piping systems?
- ANS -National Fire and Protection Association
(Book: compressed gas association as well; CGA)
Which regulatory agency sets specifications of design, construction, testing, marking,
labeling, filling, qualification, storage, handling, maintenance, transportation, and overall
deposition of the gas containers and cylinders - ANS -Department of Transportation
(DOT)
Which regulatory agency ensures that each facility is meeting the DOT, FDA, and
Pharmacopoeia of the United States Standards - ensure compliance of standards - ANS
-JCAHO
(Don't set any standards themselves, just make sure you're in compliance with the
standards)
What are medical gas cylinders made of? (2) - ANS -Steel or aluminum (lighter weight)
Define
1. Valve. What is it made of? (2)
2. port
