Question 1

The NFPA standard for bulk liquid O2 systems requires that the reserve supply be which of the following?

Accepted Answer

A)  fixed cylinder bank of 75 H cylinders
B)  at least one large liquid O2 cylinder
C)  equal to the average gas use of 1 day
D)  at least 3000 cu/ft of gaseous O2E) All of the above
F) A) and B)

Question 2

The gauge on an E cylinder of O2 reads 800 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min?

Accepted Answer

A)  1 hour 15 minutes
B)  1 hour 45 minutes
C)  2 hours 10 minutes
D)  2 hours 40 minutesE) None of the above
F) A) and B)

Question 3

What is the indexed safety system for threaded high-pressure connections between large compressed gas cylinders and their attachments?

Accepted Answer

A)  Pin-Indexed Safety System (PISS) 
B)  Diameter-Index Safety System (DISS) 
C)  American Standard Safety System (ASSS) 
D)  CGA SystemE) All of the above
F) A) and C)

Question 4

What is the key difference between small compressed gas cylinders (sizes AA to E)  and their larger counterparts (sizes F to K) ?

Accepted Answer

A)  Small gas cylinders do not undergo regular DOT testing.
B)  Small gas cylinders are always filled to lower pressures.
C)  Small gas cylinders cannot be used for anesthetic gases.
D)  Small gas cylinders use a yoke (not threaded)  connector.E) C) and D)
F) A) and D)

Question 5

What is the usual method of monitoring the remaining contents in a gas-filled cylinder?

Accepted Answer

A)  Weigh the cylinder.
B)  Read the pressure gauge.
C)  Compute the gas density.
D)  Read the cylinder label.E) A) and B)
F) All of the above

Question 6

What is the PISS index hole position for O2?

Accepted Answer

A)  1 and 5
B)  2 and 5
C)  1 and 6
D)  4 and 6E) C) and D)
F) All of the above

Question 7

In clinical practice, how is a positive identification made of the contents of a medical gas cylinder?

Accepted Answer

A)  noting the color of the cylinder
B)  inspecting the cylinder threads
C)  reading the cylinder label
D)  collecting and analyzing a gas sampleE) A) and D)
F) B) and C)

Question 8

Compressed gas cylinders are manufactured from which of the following?

Accepted Answer

A)  copper or brass
B)  seamless steel
C)  seamless aluminum
D)  fiberglassE) A) and B)
F) B) and D)

Question 9

The needle valve of a flowmeter with a ball and float tube is completely closed. When you plug the flowmeter into a gas source, the float does not move. Which of the following can be concluded?

Accepted Answer

A)  The device is not calibrated at 50 psi.
B)  The device is a Bourdon-gauge flowmeter.
C)  The device is pressure compensated.
D)  The device is affected by gravity.E) None of the above
F) All of the above

Question 10

What is the primary purpose of indexed connector systems?

Accepted Answer

A)  to prevent inadvertent misconnections between equipment
B)  to speed making connections between equipment
C)  to allow U.S. equipment to "mate" with foreign equipment
D)  to provide universal connections among all equipmentE) A) and D)
F) A) and B)

Question 11

Which of the following is false about ASSS standards?

Accepted Answer

A)  They provide specifications for more than 60 gases and mixtures.
B)  They apply only to cylinders sizes F through H/K.
C)  They apply to high-pressure connections.
D)  They provide a separate connector for all gases.E) All of the above
F) B) and C)

Question 12

Compared to portable cylinders, a centrally located, piped-in bulk O2 system has which of the following advantages?
I.no need for a backup or reserve system
II.more convenient and less hazardous than cylinders
III.oxygen already reduced to its working pressure
IV.less risk of the O2 supply being depleted

Accepted Answer

A)  I, II, and III
B)  II and IV
C)  III and IV
D)  II, III, and IVE) B) and D)
F) C) and D)

Question 13

If you have to deliver O2 to a patient directly from a bedside outlet station, which of the following devices would you select?

Accepted Answer

A)  Thorpe tube flowmeter
B)  Bourdon type gauge
C)  pressure-reducing valve
D)  medical gas regulatorE) All of the above
F) B) and C)

Question 14

What do the components of a liquid O2 bulk storage tank include?
I.inner and outer steel shells, separated by a vacuum
II.safety system that vents O2 if warming occurs
III.vaporizer system that converts liquid O2 to gas
IV.pressure-reducing valves to lower pressure to 50 psig

Accepted Answer

A)  I, II, and III
B)  II and IV
C)  I, II, III, and IV
D)  III and IVE) B) and C)
F) A) and B)

Question 15

The pressure of O2 or air in a bulk supply system is reduced to what standard working pressure?

Accepted Answer

A)  10 psig
B)  14 psig
C)  25 psig
D)  50 psigE) C) and D)
F) None of the above

Question 16

Unlike CO2 or N2O, O2 cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?

Accepted Answer

A)  O2 is 20 times less diffusible than CO2, N2O, or cyclopropane.
B)  O2 has a critical temperature well below room temperature.
C)  O2 has an extremely high gas solubility coefficient.
D)  O2 has a boiling point below well below room temperature.E) B) and C)
F) A) and D)

Question 17

When minimal fluctuations in pressure and flow are critical factors, which of the following pressure-reducing valves would be the best choice?

Accepted Answer

A)  single-stage preset pressure-reducing valve
B)  multiple-stage pressure-reducing valve
C)  uncompensated Thorpe tube flowmeter
D)  Bourdon adjustable pressure regulatorE) B) and D)
F) B) and C)

Question 18

The gauge on a G cylinder of O2 reads 400 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 5 L/min?

Accepted Answer

A)  2 hours 40 minutes
B)  3 hours 10 minutes
C)  4 hours 30 minutes
D)  9 hours 15 minutesE) None of the above
F) C) and D)

Question 19

During inspection of the shoulder of a compressed gas cylinder, you note a plus sign (+)  next to the test date. This indicates what about the cylinder?

Accepted Answer

A)  It is made of spun aluminum, not steel.
B)  It only requires a 10-year DOT inspection.
C)  It can be filled to 10% above its service pressure.
D)  It has a high coefficient of elastic expansion.E) None of the above
F) A) and D)

Question 20

The measured pressure in a liquid-filled cylinder is equivalent to which of the following?

Accepted Answer

A)  the force necessary to compress its volume within the cylinder
B)  its filling density divided by the cylinder gas factor
C)  the pressure of the surface vapor at any given temperature
D)  the weight of the liquid divided by the density of waterE) B) and C)
F) A) and B)

Exam 37: Storage and Delivery of Medical Gases

What is the usual method of monitoring the remaining contents in a gas-filled cylinder?

Correct Answer
verified

The gauge on an E cylinder of O₂ reads 800 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min?

Correct Answer
verified

What do the components of a liquid O₂ bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O₂ if warming occurs III.vaporizer system that converts liquid O₂ to gas IV.pressure-reducing valves to lower pressure to 50 psig

Correct Answer
verified

When minimal fluctuations in pressure and flow are critical factors, which of the following pressure-reducing valves would be the best choice?

Correct Answer
verified

The pressure of O₂or air in a bulk supply system is reduced to what standard working pressure?

Correct Answer
verified

Correct Answer
verified

Compressed gas cylinders are manufactured from which of the following?

Correct Answer
verified

In clinical practice, how is a positive identification made of the contents of a medical gas cylinder?

Correct Answer
verified

During inspection of the shoulder of a compressed gas cylinder, you note a plus sign (+) next to the test date. This indicates what about the cylinder?

Correct Answer
verified

What is the primary purpose of indexed connector systems?

Correct Answer
verified

The needle valve of a flowmeter with a ball and float tube is completely closed. When you plug the flowmeter into a gas source, the float does not move. Which of the following can be concluded?

Correct Answer
verified

If you have to deliver O₂ to a patient directly from a bedside outlet station, which of the following devices would you select?

Correct Answer
verified

What is the indexed safety system for threaded high-pressure connections between large compressed gas cylinders and their attachments?

Correct Answer
verified

Unlike CO₂ or N₂O, O₂ cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?

Correct Answer
verified

The gauge on a G cylinder of O₂ reads 400 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 5 L/min?

Correct Answer
verified

What is the PISS index hole position for O₂?

Correct Answer
verified

The measured pressure in a liquid-filled cylinder is equivalent to which of the following?

Correct Answer
verified

Which of the following is false about ASSS standards?

Correct Answer
verified

What is the key difference between small compressed gas cylinders (sizes AA to E) and their larger counterparts (sizes F to K) ?

Correct Answer
verified

The NFPA standard for bulk liquid O₂ systems requires that the reserve supply be which of the following?

Correct Answer
verified

Exam 37: Storage and Delivery of Medical Gases

What is the usual method of monitoring the remaining contents in a gas-filled cylinder?

Correct AnswerverifiedShow Answer

The gauge on an E cylinder of O2 reads 800 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min?

Correct AnswerverifiedShow Answer

What do the components of a liquid O2 bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O2 if warming occurs III.vaporizer system that converts liquid O2 to gas IV.pressure-reducing valves to lower pressure to 50 psig

Correct AnswerverifiedShow Answer

When minimal fluctuations in pressure and flow are critical factors, which of the following pressure-reducing valves would be the best choice?

Correct AnswerverifiedShow Answer

The pressure of O2 or air in a bulk supply system is reduced to what standard working pressure?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Compressed gas cylinders are manufactured from which of the following?

Correct AnswerverifiedShow Answer

In clinical practice, how is a positive identification made of the contents of a medical gas cylinder?

Correct AnswerverifiedShow Answer

During inspection of the shoulder of a compressed gas cylinder, you note a plus sign (+) next to the test date. This indicates what about the cylinder?

Correct AnswerverifiedShow Answer

What is the primary purpose of indexed connector systems?

Correct AnswerverifiedShow Answer

The needle valve of a flowmeter with a ball and float tube is completely closed. When you plug the flowmeter into a gas source, the float does not move. Which of the following can be concluded?

Correct AnswerverifiedShow Answer

If you have to deliver O2 to a patient directly from a bedside outlet station, which of the following devices would you select?

Correct AnswerverifiedShow Answer

What is the indexed safety system for threaded high-pressure connections between large compressed gas cylinders and their attachments?

Correct AnswerverifiedShow Answer

Unlike CO2 or N2O, O2 cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?

Correct AnswerverifiedShow Answer

The gauge on a G cylinder of O2 reads 400 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 5 L/min?

Correct AnswerverifiedShow Answer

What is the PISS index hole position for O2?

Correct AnswerverifiedShow Answer

The measured pressure in a liquid-filled cylinder is equivalent to which of the following?

Correct AnswerverifiedShow Answer

Which of the following is false about ASSS standards?

Correct AnswerverifiedShow Answer

What is the key difference between small compressed gas cylinders (sizes AA to E) and their larger counterparts (sizes F to K) ?

Correct AnswerverifiedShow Answer

The NFPA standard for bulk liquid O2 systems requires that the reserve supply be which of the following?

Correct AnswerverifiedShow Answer

Correct Answer
verified

The gauge on an E cylinder of O₂ reads 800 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min?

Correct Answer
verified

What do the components of a liquid O₂ bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O₂ if warming occurs III.vaporizer system that converts liquid O₂ to gas IV.pressure-reducing valves to lower pressure to 50 psig

Correct Answer
verified

Correct Answer
verified

The pressure of O₂or air in a bulk supply system is reduced to what standard working pressure?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If you have to deliver O₂ to a patient directly from a bedside outlet station, which of the following devices would you select?

Correct Answer
verified

Correct Answer
verified

Unlike CO₂ or N₂O, O₂ cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?

Correct Answer
verified

The gauge on a G cylinder of O₂ reads 400 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 5 L/min?

Correct Answer
verified

What is the PISS index hole position for O₂?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The NFPA standard for bulk liquid O₂ systems requires that the reserve supply be which of the following?

Correct Answer
verified