Tubing for positive pressure medical gas systems delivered from the manufacturer shall be__________________.

Identified as “oxy” or “med”

Where shall pressure indicators be provided for medical gas systems?

Outlet/inlet side of zone valve

Medical Gas Questions: Trivia Quiz!

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Questions: 50 | Attempts: 13,077 | Updated: Apr 19, 2024

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Medical Gas Questions: Trivia Quiz! - Quiz

The ASSE 6010 Medical Gas Installer's Training Course consists of 32 hours of training covering all facets of ASSE Standard 6010 and NFPA-99, 2015 edition. Installation of these gas cylinders is not easy, and therefore it is important to understand the course. Take this Med Gas prep test and see what you have understood so far. All the best and study hard!

Questions and Answers

1.

Runouts from horizontal mains or branches shall be taken off ________ the centerline of the pipeline.
- A.
  
  Above
- B.
  
  Below
- C.
  
  At
- D.
  
  From
Correct Answer
A. Above

Explanation
According to the NFPA 99: Health Care Facilities Code, when runouts are made from horizontal mains or branches, they should be taken off above the centerline of the pipeline. This is because locating the runouts above the centerline ensures that any air or gas pockets in the pipeline can be easily released. Additionally, taking the runouts off above the centerline helps to prevent the accumulation of sediment or debris in the runouts, which could potentially obstruct the flow of fluid in the pipeline.

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2.

While brazing medical-gas copper joints, a purge gas shall flow continuously to prevent the formation of copper oxide on the inside surface of the joint. What shall be used as a purge gas?
- A.
  
  Oil-free, dry Argon MD
- B.
  
  Oil-free, dry Helium NF
- C.
  
  Oil-free, dry Nitrogen NF
- D.
  
  Any inert gas
Correct Answer
C. Oil-free, dry Nitrogen NF

Explanation
During the brazing process of medical-gas copper joints, it is important to prevent the formation of copper oxide on the inside surface of the joint. To achieve this, a purge gas needs to flow continuously. The most suitable option for a purge gas in this scenario is oil-free, dry Nitrogen NF. Nitrogen is an inert gas that does not react with copper or other materials, making it ideal for preventing oxidation. Additionally, using oil-free and dry nitrogen ensures that no contaminants or moisture are introduced into the joint, maintaining the integrity of the medical-gas system.

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3.

Which of the following filler metals shall be used to braze copper-to-copper joints in medical gas/vacuum distribution piping?
- A.
  
  BAg series
- B.
  
  BAu series
- C.
  
  BCuP series
- D.
  
  BNi series
Correct Answer
C. BCuP series

Explanation
The BCuP series filler metals should be used to braze copper-to-copper joints in medical gas/vacuum distribution piping. This series is specifically designed for brazing copper and provides a strong and reliable joint. The BCuP series filler metals have good flow characteristics and are capable of filling small gaps and imperfections in the joint, ensuring a leak-free connection. Additionally, these filler metals have a low melting point, making them suitable for brazing copper pipes without causing damage to the base metal.

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4.

Tubing for positive pressure medical gas systems delivered from the manufacturer shall be__________________.
- A.
  
  Plugged or capped
- B.
  
  Harddrawn seamless
- C.
  
  Identified as “oxy” or “med”
- D.
  
  All of the above
Correct Answer
D. All of the above

Explanation
The correct answer is "All of the above". This means that tubing for positive pressure medical gas systems delivered from the manufacturer should be plugged or capped, harddrawn seamless, and identified as "oxy" or "med". These requirements ensure the safety and proper functioning of the medical gas systems.

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5.

In positive pressure systems, area alarm sensors for vital life support and critical care areas shall be located on which side of the zone valve box assemblies?
- A.
  
  Patient room side
- B.
  
  Outlet/inlet side
- C.
  
  Downstream side
- D.
  
  All of the above
Correct Answer
D. All of the above

Explanation
In positive pressure systems, area alarm sensors for vital life support and critical care areas should be located on all sides of the zone valve box assemblies. This is because having sensors on all sides ensures that any change in pressure or airflow is detected and can trigger an alarm if necessary. By placing sensors on the patient room side, outlet/inlet side, and downstream side, any potential issues or malfunctions can be quickly identified and addressed, ensuring the safety and well-being of patients in these areas.

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2
6.

The master alarm system shall activate when the pressure in the main supply lines increase or decrease by __________ percent.
- A.
  
  10
- B.
  
  20
- C.
  
  40
- D.
  
  50
Correct Answer
B. 20

Explanation
The master alarm system is designed to activate when there is a significant change in the pressure of the main supply lines. In this case, the correct answer is 20 percent, indicating that the alarm will be triggered if the pressure increases or decreases by 20 percent. This threshold allows for a reasonable range of pressure fluctuations to be detected and alerted, ensuring that any abnormal changes can be addressed promptly.

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7.

All medical gas alarm systems shall have a ____________ audible indication for each condition monitored.
- A.
  
  Adjustable
- B.
  
  Cancelable
- C.
  
  Optional
- D.
  
  All of the above
Correct Answer
B. Cancelable

Explanation
Medical gas alarm systems are required to have a cancelable audible indication for each condition monitored. This means that the alarm can be silenced or canceled once the condition is resolved or acknowledged. This feature allows healthcare professionals to address the issue without the constant noise of the alarm. It also ensures that the alarm is not ignored or overlooked in case of multiple alarms going off simultaneously. Having a cancelable audible indication promotes effective response and management of medical gas system issues.

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8.

The master alarm system shall consist of two or more alarm panels, a centralized computer system shall not be permitted to be used as a substitute for one of the required master alarm panels.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement is stating that a centralized computer system cannot be used as a substitute for one of the required master alarm panels. Therefore, the correct answer is False, indicating that a centralized computer system is not permitted as a substitute for a master alarm panel.

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9.

Since dew point and carbon monoxide monitors are located upstream of the source valve, demand check fittings are not required.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement suggests that demand check fittings are not required because the dew point and carbon monoxide monitors are located upstream of the source valve. However, this statement is false. Demand check fittings are required regardless of the location of the monitors because they ensure that the gas flow is regulated properly and prevent backflow.

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10.

Where shall pressure indicators be provided for medical gas systems?
- A.
  
  On the main supply line
- B.
  
  At the area alarm
- C.
  
  Outlet/inlet side of zone valve
- D.
  
  All of the above
Correct Answer
D. All of the above

Explanation
Pressure indicators should be provided for medical gas systems at all of the mentioned locations. This is because pressure indicators are essential for monitoring the pressure levels in the system to ensure proper functioning and safety. The main supply line, area alarm, and outlet/inlet side of zone valve are all critical points in the system where pressure indicators can help identify any abnormalities or fluctuations in pressure. Therefore, it is necessary to have pressure indicators at all of these locations to maintain the integrity and reliability of the medical gas system.

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11.

The scale range of positive pressure analog indicators shall have the normal reading fall within the_________ percentage of the gage scale.
- A.
  
  25
- B.
  
  50
- C.
  
  75
- D.
  
  100
Correct Answer
B. 50

Explanation
The scale range of positive pressure analog indicators should have the normal reading fall within 50% of the gage scale. This means that the normal operating range of the indicator should be centered around the midpoint of the scale, allowing for equal measurement capacity on both sides of the midpoint. This ensures that the indicator can accurately and effectively measure positive pressure within a reasonable range without exceeding the limits of the scale.

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12.

Station inlets for WAGD service shall be legibly marked to identify them and shall be of a type appropriate for the flow and vacuum level required by the facility’s gas anesthetic machines.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The statement is true because station inlets for WAGD (Waste Anesthetic Gas Disposal) service need to be clearly marked and should be suitable for the flow and vacuum level needed by the gas anesthetic machines in the facility. This ensures that the correct gas supply is used and helps maintain the safety and efficiency of the equipment.

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13.

The factory-installed tubing on station outlets/inlets shall extend no further than ______ from the body of the terminal.
- A.
  
  6"
- B.
  
  8"
- C.
  
  10"
- D.
  
  12"
Correct Answer
B. 8"

Explanation
The factory-installed tubing on station outlets/inlets should not extend more than 8 inches from the body of the terminal. This limitation ensures that the tubing is not excessively long, which could lead to inefficiencies or potential hazards in the system.

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14.

Each station outlet/inlet for medical gas or vacuum shall be ____________.
- A.
  
  Interchangeable
- B.
  
  Gas-specific
- C.
  
  Threaded
- D.
  
  Quick-coupler
Correct Answer
B. Gas-specific

Explanation
Each station outlet/inlet for medical gas or vacuum shall be gas-specific. This means that each outlet/inlet is designed and designated for a specific type of gas or vacuum, ensuring that there is no mixing or contamination of different gases. This is crucial for the safety and effectiveness of medical gas systems, as using the wrong gas can have serious consequences for patients and medical staff. By having gas-specific outlets/inlets, healthcare facilities can ensure the proper delivery and use of medical gases.

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15.

What is the name given to the shutoff valve installed on all lateral branch piping from a main or riser?
- A.
  
  Riser
- B.
  
  Service
- C.
  
  Zone
- D.
  
  Main
Correct Answer
B. Service

Explanation
The name given to the shutoff valve installed on all lateral branch piping from a main or riser is "Service." This valve is typically used to control the flow of water or other fluids to specific areas or zones within a building or system. It allows for easy maintenance, repair, or isolation of specific sections without affecting the entire system.

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16.

A shutoff valve shall be placed at the immediate connection of each source system to the distribution piping system. What is the name given to the valve?
- A.
  
  Main
- B.
  
  Supply
- C.
  
  Source
- D.
  
  Isolation
Correct Answer
C. Source

Explanation
The valve that is placed at the immediate connection of each source system to the distribution piping system is called the "source" valve. This valve is used to shut off the flow of fluid or gas from the source system into the distribution piping system. It allows for easy isolation and control of each individual source system, ensuring that any maintenance or repairs can be done without affecting the entire distribution system.

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17.

All valves except zone valve box assemblies shall be ________________.
- A.
  
  In a secured area
- B.
  
  Locked or latched
- C.
  
  Labeled appropriately
- D.
  
  All of the above
Correct Answer
D. All of the above

Explanation
All valves except zone valve box assemblies should be secured in a secured area, locked or latched, and labeled appropriately. This ensures that unauthorized access is prevented, and the valves can be easily identified and operated when needed. By implementing all of these measures, the valves are kept safe, organized, and easily accessible for maintenance or emergency situations.

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18.

Where instrument air systems are provided with standby headers, in the event of a compressor failure, the standby header shall automatically serve the system.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
In instrument air systems that have standby headers, if a compressor fails, the standby header will automatically take over and provide air to the system. This ensures that there is no interruption in the supply of instrument air, even in the event of a compressor failure. Therefore, the statement is true.

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19.

What is the minimum number of compressors required in an instrument air system that employs a standby header?
- A.
  
  0
- B.
  
  1
- C.
  
  2
- D.
  
  3
Correct Answer
B. 1

Explanation
In an instrument air system that employs a standby header, the minimum number of compressors required is 1. This is because the standby header is used as a backup or reserve system, ensuring a continuous supply of instrument air in case of any failure or maintenance of the primary header. Therefore, even if one compressor is not operational, the standby header can still provide the required instrument air.

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20.

Instrument air systems shall be permitted to interconnect with medical air systems that have at least two or more compressors.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Instrument air systems should not be interconnected with medical air systems, even if the medical air system has multiple compressors. This is because instrument air systems may contain contaminants that could be harmful if introduced into the medical air system. Therefore, it is important to keep these systems separate to ensure the purity and safety of the medical air supply.

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21.

The quality of the instrument air shall be _________________.
- A.
  
  Filtered to .01 micron
- B.
  
  Free of liquids
- C.
  
  Free of hydrocarbon vapors
- D.
  
  All of the above
Correct Answer
D. All of the above

Explanation
The quality of the instrument air needs to fulfill multiple criteria. It should be filtered to .01 micron to remove any particulate matter. It should also be free of liquids to prevent any moisture from affecting the instrument's performance. Additionally, it should be free of hydrocarbon vapors to avoid any contamination. Therefore, the correct answer is "All of the above" as all these conditions need to be met for the instrument air to be of good quality.

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22.

A Level 1 dedicated WAGD source shall consist of _____ or more producers, each shall be sufficient to serve the peak calculated demand.
- A.
  
  One
- B.
  
  Two
- C.
  
  Three
- D.
  
  All of the above
Correct Answer
B. Two

Explanation
A Level 1 dedicated WAGD source shall consist of two or more producers, each of which shall be sufficient to serve the peak calculated demand. This means that at least two producers are required to meet the demand for the WAGD source.

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23.

Which of the following is NOT a commonly used medical gas in healthcare settings?
- A.
  
  Oxygen
- B.
  
  Carbon dioxide
- C.
  
  Neon
- D.
  
  Nitrous oxide
Correct Answer
C. Neon

Explanation
Neon, is not commonly used as a medical gas in healthcare settings; it is more commonly used in lighting and high-voltage indicators rather than in medical treatments.

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24.

Level 1 medical-surgical vacuum sources shall consist of an automatic means to prevent_____________ through any off-cycle vacuum pump.
- A.
  
  Pressure loss
- B.
  
  Back pressure
- C.
  
  Backflow
- D.
  
  All of the above
Correct Answer
C. Backflow

Explanation
Level 1 medical-surgical vacuum sources should have an automatic mechanism in place to prevent backflow through any off-cycle vacuum pump. Backflow refers to the reverse flow of fluids or gases, which can be dangerous in a medical setting. By preventing backflow, the vacuum source ensures the proper functioning and safety of the system.

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25.

Carbon monoxide shall activate the required alarms when the CO level exceeds ________.
- A.
  
  5 ppm
- B.
  
  10 ppm
- C.
  
  15 ppm
- D.
  
  20 ppm
Correct Answer
B. 10 ppm

Explanation
Carbon monoxide is a toxic gas that is odorless and colorless, making it difficult to detect without the use of alarms. When the CO level exceeds 10 parts per million (ppm), it is considered dangerous and can pose a threat to human health. Therefore, it is important for the required alarms to be activated when the CO level exceeds this threshold in order to alert individuals and ensure their safety.

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26.

Where charcoal filters are required, a colormetric hydrocarbon indicator shall be provided.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Charcoal filters are used to remove impurities and odors from air or water. In certain applications, such as in air purifiers or water filtration systems, it is necessary to monitor the presence of hydrocarbons. A colormetric hydrocarbon indicator is a type of indicator that changes color in the presence of hydrocarbons, allowing users to easily detect their presence. Therefore, it is logical to conclude that when charcoal filters are required, a colormetric hydrocarbon indicator should be provided to ensure their effectiveness.

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27.

Where liquid ring compressors are used, air receivers shall be equipped with a high water level sensor that activates a(n) ________________ alarm indicator.
- A.
  
  Master
- B.
  
  Area
- C.
  
  Local
- D.
  
  All of the above
Correct Answer
C. Local

Explanation
In applications where liquid ring compressors are used, air receivers need to be equipped with a high water level sensor that activates a local alarm indicator. This is necessary to ensure that any excessive water levels in the receiver are detected and addressed promptly. The local alarm indicator will alert the operators in the immediate vicinity of the receiver, allowing them to take appropriate action to prevent any potential damage or safety hazards.

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28.

The compressor air intakes shall be located outdoors above roof level at a minimum distance of__________ above the ground.
- A.
  
  40 ft.
- B.
  
  30 ft.
- C.
  
  20 ft.
- D.
  
  10 ft.
Correct Answer
C. 20 ft.

Explanation
The correct answer is 20 ft. The reason for this is that locating the compressor air intakes outdoors above roof level ensures that the air being drawn into the compressor is clean and free from any potential contaminants or obstructions that may be present at ground level. By placing the intakes at a minimum distance of 20 ft. above the ground, it helps to prevent any dust, debris, or other particles from being sucked into the compressor, which could potentially cause damage or reduce its efficiency.

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29.

Where medical air piping systems at different operating pressures are required, the piping shall separate after the __________.
- A.
  
  Filters
- B.
  
  Final line regulators
- C.
  
  Riser valve
- D.
  
  Source valve
Correct Answer
A. Filters

Explanation
When medical air piping systems at different operating pressures are required, the piping should separate after the filters. Filters are used to remove impurities and contaminants from the air, ensuring that it is clean and safe for medical use. By separating the piping after the filters, it allows for different pressures to be maintained in different sections of the system, ensuring that the air quality remains high and consistent throughout.

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30.

If dryers, filters and regulators are sized to serve the peak calculated demand, they shall not be duplexed.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement is false because even if dryers, filters, and regulators are sized to serve the peak calculated demand, they can still be duplexed. Duplexing refers to the use of two identical units in parallel to provide redundancy and ensure continuous operation in case of one unit failure. So, even if the equipment is sized correctly, duplexing can still be implemented for added reliability.

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31.

Level 1 medical air compressors shall be sized to serve the peak calculated demand and in no case shall there be fewer than _____ compressors.
- A.
  
  One
- B.
  
  Two
- C.
  
  Three
- D.
  
  Four
Correct Answer
B. Two

Explanation
Level 1 medical air compressors need to be sized to meet the peak calculated demand, ensuring that there is sufficient air supply for medical equipment and procedures. In order to ensure redundancy and prevent any disruption in the air supply, there should be a minimum of two compressors. This ensures that if one compressor fails or requires maintenance, the other compressor can continue to provide the necessary air supply.

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32.

Receivers for medical air shall be equipped with _____________.
- A.
  
  Relief valve
- B.
  
  Automatic and manual drains
- C.
  
  Sight glass
- D.
  
  All of the above
Correct Answer
D. All of the above

Explanation
Receivers for medical air need to be equipped with relief valves to prevent excessive pressure buildup, automatic and manual drains to remove any accumulated moisture or contaminants, and sight glasses to allow visual inspection of the air quality. Therefore, all of the given options are necessary for receivers for medical air.

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33.

__________ connectors shall connect the air compressors with their intake and outlet piping.
- A.
  
  Anti-vibration
- B.
  
  Dielectric
- C.
  
  Insulated
- D.
  
  Flexible
Correct Answer
D. Flexible

Explanation
Flexible connectors are used to connect air compressors with their intake and outlet piping. These connectors are designed to absorb vibrations and movements, providing flexibility and preventing damage to the piping system. They allow for easy installation and disconnection of the air compressors while ensuring a secure and leak-free connection. The flexibility of these connectors also helps to reduce noise and vibrations caused by the operation of the compressors, enhancing the overall efficiency and performance of the system.

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34.

Compressors for medical air shall be designed to prevent the introduction of contaminants or liquid into the piping system.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Compressors for medical air need to be designed in a way that ensures contaminants or liquid cannot enter the piping system. This is crucial because medical air is used in various medical procedures and any contamination or presence of liquid could pose serious health risks to patients. Therefore, it is important to have compressors specifically designed to prevent the introduction of contaminants or liquid into the medical air piping system.

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35.

Medical air sources shall be used only for _________ and calibration of medical respiratory devices.
- A.
  
  Human respiration
- B.
  
  Air-operating devices
- C.
  
  Instrument air
- D.
  
  All of the above
Correct Answer
A. Human respiration

Explanation
Medical air sources are specifically designed and purified for human respiration. They are used to provide a clean and safe source of air for patients who require respiratory support. Medical air sources are not intended for other purposes such as operating devices or instrument calibration. Therefore, the correct answer is "Human respiration".

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36.

Where the bulk cryogenic liquid oxygen supply system is outside of and remote from the building served, a _________ connection shall be installed.
- A.
  
  Maintenance cleanout
- B.
  
  Refilling
- C.
  
  Emergency oxygen supply
- D.
  
  All of the above
Correct Answer
C. Emergency oxygen supply

Explanation
In situations where the bulk cryogenic liquid oxygen supply system is located outside of and far from the building it serves, an emergency oxygen supply connection should be installed. This is important to ensure that emergency oxygen can be quickly and easily accessed in case of any unforeseen circumstances or emergencies. This connection allows for a reliable and efficient supply of oxygen during emergencies, providing a crucial safety measure for the building and its occupants.

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37.

An in-building emergency reserve system can be substituted for the EOSC.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
An in-building emergency reserve system can be substituted for the EOSC. This means that instead of relying on the Emergency Operations and Control Center (EOSC) for emergency situations, an in-building emergency reserve system can be used as an alternative. This suggests that the in-building system is capable of providing the necessary support and resources in case of emergencies, making it a suitable substitute for the EOSC.

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38.

Bulk cryogenic liquid system sites shall have allowance for at least ____ of clearance around the storage container, vaporizer and the pressure-regulating manifold.
- A.
  
  2 feet
- B.
  
  3 feet
- C.
  
  4 feet
- D.
  
  5 feet
Correct Answer
B. 3 feet

Explanation
Bulk cryogenic liquid systems require a certain amount of clearance around the storage container, vaporizer, and pressure-regulating manifold for safety reasons. This clearance allows for proper ventilation and prevents any potential hazards. The correct answer is 3 feet, as this provides enough space for safe operation and maintenance of the system.

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39.

Installers of bulk cryogenic liquid systems shall be qualified to meet CGA M-1 Standard, Guide for Medical Gas Installations at Consumers Sites.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The given statement is true. Installers of bulk cryogenic liquid systems need to be qualified to meet the CGA M-1 Standard, which is the Guide for Medical Gas Installations at Consumer Sites. This standard ensures that the installation of these systems is done correctly and safely, particularly in medical environments where the use of cryogenic liquids is common. By meeting this standard, installers can ensure that the systems they install meet the necessary requirements for medical gas installations.

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40.

Manifolds for cryogenic liquid cylinders shall indicate when or at a predetermined set point before the reserve contents fall to one day’s average supply, indicating _______.
- A.
  
  Reserve is in use
- B.
  
  Primary empty
- C.
  
  Secondary empty
- D.
  
  Reserve low
Correct Answer
D. Reserve low

Explanation
The correct answer is "Reserve low". Manifolds for cryogenic liquid cylinders need to indicate when the reserve contents are falling to one day's average supply, which signifies that the reserve level is getting low. This indication is important for ensuring that there is enough supply available and allows for timely replenishment of the reserves.

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41.

Manifolds for cryogenic liquid cylinders shall consist of __________ equal headers; each having sufficient number of liquid containers for an average day’s supply.
- A.
  
  4
- B.
  
  3
- C.
  
  2
- D.
  
  1
Correct Answer
C. 2

Explanation
Manifolds for cryogenic liquid cylinders shall consist of 2 equal headers; each having sufficient number of liquid containers for an average day’s supply. This means that there are two headers in the manifold system, each containing enough liquid containers to meet the average daily demand. By having two headers, it allows for redundancy and flexibility in the system, ensuring a continuous and reliable supply of cryogenic liquid.

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1
42.

Manifolds for gas cylinders without reserve shall consist of ___________ equal headers; each with an average day’s supply, but not fewer than _________ connections.
- A.
  
  Four – four
- B.
  
  Three – three
- C.
  
  Two – two
- D.
  
  One – one
Correct Answer
C. Two – two

Explanation
The correct answer is "Two - two." This means that manifolds for gas cylinders without reserve should consist of two equal headers, each with an average day's supply, but not fewer than two connections. This ensures that there is redundancy in the system and allows for continuous gas supply even if one header fails or requires maintenance.

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43.

Relief valves shall be vented to the ___________, except compressed air systems having less than 3000 cubic feet at STP.
- A.
  
  Floor
- B.
  
  Sewer drain
- C.
  
  Back into the system
- D.
  
  Outside
Correct Answer
D. Outside

Explanation
Relief valves are designed to release excess pressure from a system to prevent damage or failure. Venting them to the outside ensures that the released pressure is safely expelled into the surrounding environment, away from any confined or enclosed spaces. This helps to prevent any potential hazards or accidents that may occur if the pressure is vented back into the system or directed towards the floor or sewer drain. However, for compressed air systems with a small volume, venting to the outside may not be necessary as the amount of pressure being released is relatively low.

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44.

All pressure relief valves shall be made of brass, bronze or ____________.
- A.
  
  Stainless steel
- B.
  
  Carbon steel
- C.
  
  Cast iron
- D.
  
  Copper
Correct Answer
A. Stainless steel

Explanation
All pressure relief valves need to be made of materials that can withstand high pressure and corrosion. Brass and bronze are commonly used materials for pressure relief valves, but stainless steel is also a suitable option due to its high strength and resistance to corrosion. Stainless steel is known for its durability and ability to withstand harsh environments, making it an ideal choice for pressure relief valves. Carbon steel, cast iron, and copper may not have the same level of strength and corrosion resistance required for pressure relief valves.

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45.

Louvered openings for natural ventilation shall have a minimum free area of __________.
- A.
  
  60 sq. in.
- B.
  
  62 sq. in.
- C.
  
  70 sq. in.
- D.
  
  72 sq. in.
Correct Answer
D. 72 sq. in.

Explanation
Louvered openings are used for natural ventilation and they need to have a minimum free area to allow for sufficient airflow. The correct answer is 72 sq. in. This means that the louvered opening should have a minimum area of 72 square inches to ensure proper ventilation.

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46.

Locations for central supply systems and the storage of medical gases shall be secured with lockable doors or gates.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The statement is true because it is necessary to secure locations for central supply systems and the storage of medical gases with lockable doors or gates. This is important to prevent unauthorized access and ensure the safety and security of these critical supplies. Lockable doors or gates help to control access to these areas and prevent any potential tampering or theft.

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47.

Cylinders in use and in storage shall be prevented from reaching temperatures in excess of _______________.
- A.
  
  100º F
- B.
  
  130º F
- C.
  
  160º F
- D.
  
  190º F
Correct Answer
B. 130º F

Explanation
Cylinders in use and in storage should be prevented from reaching temperatures in excess of 130º F. This is important because high temperatures can cause the pressure inside the cylinders to increase, potentially leading to a dangerous situation. Excessive heat can also degrade the materials of the cylinders, reducing their integrity and safety. Therefore, it is crucial to ensure that cylinders are stored and used in environments where the temperature does not exceed 130º F.

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48.

Which of the following systems shall not be permitted to be located in the same indoor enclosure?
- A.
  
  Bulk cryogenic liquid system
- B.
  
  Manifolds for cryogenic liquid cylinders
- C.
  
  Manifolds for gas cylinders with or without reserve
- D.
  
  Instrument air standby leader
Correct Answer
A. Bulk cryogenic liquid system

Explanation
A bulk cryogenic liquid system should not be located in the same indoor enclosure as the other systems mentioned. This is because bulk cryogenic liquid systems involve the storage and handling of large quantities of extremely cold liquids, such as liquid nitrogen or liquid oxygen. These systems require specific safety measures, including proper ventilation and insulation, to prevent leaks or accidents. Mixing a bulk cryogenic liquid system with other systems in the same enclosure could increase the risk of accidents or compromise the safety of the other systems.

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49.

Liquid containers shall have additional product identification visible from all directions with a minimum of _____ inch high letters such as a 360 degree wrap-a-round tape for medical liquid containers.
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
Correct Answer
B. 2

Explanation
Liquid containers should have additional product identification visible from all directions with a minimum of 2-inch high letters. This ensures that the identification is easily readable and identifiable, promoting safety and proper handling of the containers. A 360-degree wrap-around tape is one way to achieve this visibility and legibility.

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50.

Which of the following hazards shall be considered in the design, installation, testing and maintenance of medical gas and vacuum piping systems?
- A.
  
  Contamination
- B.
  
  Fire and Smoke
- C.
  
  Fire and Explosions
- D.
  
  Water and Gas
Correct Answer
C. Fire and Explosions

Explanation
In the design, installation, testing, and maintenance of medical gas and vacuum piping systems, it is important to consider the hazard of fire and explosions. This is because these systems involve the transportation and use of highly flammable gases, which can pose a significant risk if not handled properly. By taking into account the potential for fire and explosions, appropriate safety measures can be implemented to minimize the risk and ensure the safe operation of these systems.

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Current Version
Apr 19, 2024

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Nov 01, 2010

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Medical Gas Questions: Trivia Quiz!

Runouts from horizontal mains or branches shall be taken off ________ the centerline of the pipeline.

While brazing medical-gas copper joints, a purge gas shall flow continuously to prevent the formation of copper oxide on the inside surface of the joint. What shall be used as a purge gas?

Which of the following filler metals shall be used to braze copper-to-copper joints in medical gas/vacuum distribution piping?

Tubing for positive pressure medical gas systems delivered from the manufacturer shall be__________________.

In positive pressure systems, area alarm sensors for vital life support and critical care areas shall be located on which side of the zone valve box assemblies?

The master alarm system shall activate when the pressure in the main supply lines increase or decrease by __________ percent.

All medical gas alarm systems shall have a ____________ audible indication for each condition monitored.

The master alarm system shall consist of two or more alarm panels, a centralized computer system shall not be permitted to be used as a substitute for one of the required master alarm panels.

Since dew point and carbon monoxide monitors are located upstream of the source valve, demand check fittings are not required.

Where shall pressure indicators be provided for medical gas systems?

The scale range of positive pressure analog indicators shall have the normal reading fall within the_________ percentage of the gage scale.

Station inlets for WAGD service shall be legibly marked to identify them and shall be of a type appropriate for the flow and vacuum level required by the facility’s gas anesthetic machines.

The factory-installed tubing on station outlets/inlets shall extend no further than ______ from the body of the terminal.

Each station outlet/inlet for medical gas or vacuum shall be ____________.

What is the name given to the shutoff valve installed on all lateral branch piping from a main or riser?

A shutoff valve shall be placed at the immediate connection of each source system to the distribution piping system. What is the name given to the valve?

All valves except zone valve box assemblies shall be ________________.

Where instrument air systems are provided with standby headers, in the event of a compressor failure, the standby header shall automatically serve the system.

What is the minimum number of compressors required in an instrument air system that employs a standby header?

Instrument air systems shall be permitted to interconnect with medical air systems that have at least two or more compressors.

The quality of the instrument air shall be _________________.

A Level 1 dedicated WAGD source shall consist of _____ or more producers, each shall be sufficient to serve the peak calculated demand.

Which of the following is NOT a commonly used medical gas in healthcare settings?

Level 1 medical-surgical vacuum sources shall consist of an automatic means to prevent_____________ through any off-cycle vacuum pump.

Carbon monoxide shall activate the required alarms when the CO level exceeds ________.

Where charcoal filters are required, a colormetric hydrocarbon indicator shall be provided.

Where liquid ring compressors are used, air receivers shall be equipped with a high water level sensor that activates a(n) ________________ alarm indicator.

The compressor air intakes shall be located outdoors above roof level at a minimum distance of__________ above the ground.

Where medical air piping systems at different operating pressures are required, the piping shall separate after the __________.

If dryers, filters and regulators are sized to serve the peak calculated demand, they shall not be duplexed.

Level 1 medical air compressors shall be sized to serve the peak calculated demand and in no case shall there be fewer than _____ compressors.

Receivers for medical air shall be equipped with _____________.

__________ connectors shall connect the air compressors with their intake and outlet piping.

Compressors for medical air shall be designed to prevent the introduction of contaminants or liquid into the piping system.

Medical air sources shall be used only for _________ and calibration of medical respiratory devices.

Where the bulk cryogenic liquid oxygen supply system is outside of and remote from the building served, a _________ connection shall be installed.

An in-building emergency reserve system can be substituted for the EOSC.

Bulk cryogenic liquid system sites shall have allowance for at least ____ of clearance around the storage container, vaporizer and the pressure-regulating manifold.

Installers of bulk cryogenic liquid systems shall be qualified to meet CGA M-1 Standard, Guide for Medical Gas Installations at Consumers Sites.

Manifolds for cryogenic liquid cylinders shall indicate when or at a predetermined set point before the reserve contents fall to one day’s average supply, indicating _______.

Manifolds for cryogenic liquid cylinders shall consist of __________ equal headers; each having sufficient number of liquid containers for an average day’s supply.

Manifolds for gas cylinders without reserve shall consist of ___________ equal headers; each with an average day’s supply, but not fewer than _________ connections.

Relief valves shall be vented to the ___________, except compressed air systems having less than 3000 cubic feet at STP.

All pressure relief valves shall be made of brass, bronze or ____________.

Louvered openings for natural ventilation shall have a minimum free area of __________.

Locations for central supply systems and the storage of medical gases shall be secured with lockable doors or gates.

Cylinders in use and in storage shall be prevented from reaching temperatures in excess of _______________.

Which of the following systems shall not be permitted to be located in the same indoor enclosure?

Liquid containers shall have additional product identification visible from all directions with a minimum of _____ inch high letters such as a 360 degree wrap-a-round tape for medical liquid containers.

Which of the following hazards shall be considered in the design, installation, testing and maintenance of medical gas and vacuum piping systems?

Manifolds for gas cylinders without reserve shall consist of ___ equal headers; each with an average day’s supply, but not fewer than _ connections.