Anesthesia Machine SEE Questions & Accurate Answers
How is O2 manufactured? Right Ans - By fractional distillation of liquified
air.
How is N2O manufactured? Right Ans - By thermal decompression of
ammonium nitrate.
Who regulates compressed gases, and in what year did they initiate this
regulation? Do they have legal force? Right Ans - 1913, Compressed Gas
Association (CGA). They have no legal force.
Who regulates the purity of compressed gases? Do they have legal force?
Right Ans - Pharmacopeia of U.S. (USP), they have no legal force.
Who enforces the regulation of compressed gases? Right Ans - FDA
Who regulates the transportation of compressed gases? Is this a force of law?
Right Ans - Motor Safety Division of the Department of Transportation (DOT).
Yes, this is a force of law.
What does the symbol "3AA" mean on a gas cylinder? Right Ans - The
cylinder is made of steel and is not MRI safe.
What does the symbol "3 ALM" or 3A mean on a gas cylinder? Right Ans -
The cylinder is made of aluminum and is MRI safe.
What does the valve stem do on a gas cylinder? Right Ans - Turns the gas
on, a wrench is needed to do this.
What is the port on a gas cylinder? Right Ans - The point of exit for the gas.
What are the 3 types of pressure relief devices on a gas cylinder? And how do
they work? Right Ans - 1. Rupture (burst) device that ruptures at a
predetermined pressure
2. Fusible (melting) plug that melts at a given temperature
3. Pressure relief device (best kind) that opens at extreme pressures but can
re-close when normal conditions return
, What are the 4 types of Woods metal that fusible plugs on the gas cylinders
can be comprised of? Right Ans - 1. Bismuth
2. Lead
3. Tin
4. Cadmium
What is the conical depression for on the gas cylinders? Right Ans - It
supports the cylinder on the hanger yoke when attaching the cylinder to the
anesthesia machine, and receives the retaining screws of the yoke during
attachment
What are the E-cylinder pressures, volumes, and colors (U.S. & WHO) of air,
oxygen, and nitrous oxide? Right Ans - Air: US - yellow, WHO - white &
black; 1900 psi; 625 L
O2: US - green, WHO - white; 2000 psi; 660 L
N2O: US- blue, WHO - blue; 745 psi; 1590 L
Label the image of the cylinder markings. Right Ans - A. Government
Agency
B. Metal type
C. Working pressure
D. Serial Number
E. Manufacturer
F. Hydrostatic tester's mark
G. Hydrostatic test date
H. 10% overfill allowed
How often are gas cylinders tested? Right Ans - Every 5 years cylinders are
inspected and tested with internal hydrostatic pressure. Every 10 years with
special permits.
What are the five components of the gas cylinders? Right Ans - Stem, Port,
PISS system, Conical depression, and the pressure relief valve
Label the components of the gas cylinder. Right Ans - A. Valve stem
B. Conical depression
C. Pressure relief valve
D. Port
E. PISS system
How is O2 manufactured? Right Ans - By fractional distillation of liquified
air.
How is N2O manufactured? Right Ans - By thermal decompression of
ammonium nitrate.
Who regulates compressed gases, and in what year did they initiate this
regulation? Do they have legal force? Right Ans - 1913, Compressed Gas
Association (CGA). They have no legal force.
Who regulates the purity of compressed gases? Do they have legal force?
Right Ans - Pharmacopeia of U.S. (USP), they have no legal force.
Who enforces the regulation of compressed gases? Right Ans - FDA
Who regulates the transportation of compressed gases? Is this a force of law?
Right Ans - Motor Safety Division of the Department of Transportation (DOT).
Yes, this is a force of law.
What does the symbol "3AA" mean on a gas cylinder? Right Ans - The
cylinder is made of steel and is not MRI safe.
What does the symbol "3 ALM" or 3A mean on a gas cylinder? Right Ans -
The cylinder is made of aluminum and is MRI safe.
What does the valve stem do on a gas cylinder? Right Ans - Turns the gas
on, a wrench is needed to do this.
What is the port on a gas cylinder? Right Ans - The point of exit for the gas.
What are the 3 types of pressure relief devices on a gas cylinder? And how do
they work? Right Ans - 1. Rupture (burst) device that ruptures at a
predetermined pressure
2. Fusible (melting) plug that melts at a given temperature
3. Pressure relief device (best kind) that opens at extreme pressures but can
re-close when normal conditions return
, What are the 4 types of Woods metal that fusible plugs on the gas cylinders
can be comprised of? Right Ans - 1. Bismuth
2. Lead
3. Tin
4. Cadmium
What is the conical depression for on the gas cylinders? Right Ans - It
supports the cylinder on the hanger yoke when attaching the cylinder to the
anesthesia machine, and receives the retaining screws of the yoke during
attachment
What are the E-cylinder pressures, volumes, and colors (U.S. & WHO) of air,
oxygen, and nitrous oxide? Right Ans - Air: US - yellow, WHO - white &
black; 1900 psi; 625 L
O2: US - green, WHO - white; 2000 psi; 660 L
N2O: US- blue, WHO - blue; 745 psi; 1590 L
Label the image of the cylinder markings. Right Ans - A. Government
Agency
B. Metal type
C. Working pressure
D. Serial Number
E. Manufacturer
F. Hydrostatic tester's mark
G. Hydrostatic test date
H. 10% overfill allowed
How often are gas cylinders tested? Right Ans - Every 5 years cylinders are
inspected and tested with internal hydrostatic pressure. Every 10 years with
special permits.
What are the five components of the gas cylinders? Right Ans - Stem, Port,
PISS system, Conical depression, and the pressure relief valve
Label the components of the gas cylinder. Right Ans - A. Valve stem
B. Conical depression
C. Pressure relief valve
D. Port
E. PISS system
