Medical Gas Practice Exam

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• Station outlets/inlets shall be identified as to the _________ for the specific gas or vacuum provided.
• Which signal from a system is connected to the master alarm panels to indicate a problem with the source equipment?
• If a nonmetallic flexible connector is being used in a Category 1 health care facility to connect the manifold to the gas distribution piping, what is the maximum length (feet) permitted for the flexible connector?
• If another alarm condition occurs while the audible alarm is manually silenced, what happens next?
• The portion of the medical gas supply equipment that automatically supplies the system when the primary and secondary are unable to do so is called what?
• WAGD inlet shall be installed in all locations where which gas is intended to be administered?
• With AHJ approval, in which areas shall shutoff valves be secured to prevent inappropriate access?
• Installers for medical gas and vacuum systems must meet the requirements of which standard?
• Final line regulators, when used for bulk cryogenic liquid systems, shall be of which design?
• In those portions of the system intended to handle oxygen at pressures greater than 350 psi, the interconnecting hose shall not contain __________ materials.
• When compressors that separate the oil-containing section from the compression chamber are used, these compressors shall be monitored for which items?
• Which type of connector should connect the medical air compressors to their intake and outlet piping?
• In a cryogenic liquid cylinder manifold system, the reserve header shall have no fewer than how many cylinder connections?
• Manifolds for gas cylinders shall actuate a ______ signal and shall activate an indicator at all ______ alarm panels to indicate when or just before changeover from one header to the other.
• NFPA 99 establishes material requirements for check valves in the Emergency Oxygen Supply Connection.
• Which worker type is NOT listed as a responsibility in the ASSE 6000 Annex J guidelines for Planned Medical Gas System Shutdown and Temporary Backfeed?
• What valves shall be readily operable from a standing position in the corridor on the same floor they serve?
• Which statement best describes the purpose of the continuous indicator on final instrument air filters?
• If monitoring a compressor with oil separation, which of the following should be monitored?
• The accuracy of digital indicators shall be +/- ____ % of the operating pressure at which they are used.
• What percent of zones shall be tested at the outlet most remote from the source to verify the piping particulate test?
• 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 standard does not establish material requirements for check valves in the Emergency Oxygen Supply Connection?
• Performance qualification of brazers shall remain in effect indefinitely unless the brazer does NOT braze with the qualified procedure for longer than what period of time?
• Stainless tube may be joined by any methods EXCEPT which of the following?
• Who shall witness the installer performing the standing pressure test?
• To assure that all ambient air has been removed from the pipeline prior to brazing, a/an ______ shall be used to verify the effectiveness of the nitrogen purge.
• The main line pressure, operation of the source of supply, and the reserve source are monitored at which alarm?
• A signal from each _______ system shall be connected to the master alarm panels to indicate that a problem is present with the source equipment.
• How many hours must the medical air compressor system be operating normally before an air quality test can be performed?
• To power the venturi of a WAGD system, which source is incorrect?
• Which of these operations would NOT breach the vacuum system?
• What is the minimum clearance around the emergency oxygen supply connection (EOSC) permitted for planning?
• Which is a permitted use of the medical-surgical vacuum system?
• Joints shall be brazed within _______ hours after the surfaces are cleaned for brazing.
• NFPA 55 governs which type of systems?
• Which of the following is true about identifying gas outlets to indicate the gas or vacuum provided?
• A valve installed in each medical gas and vacuum piping system shall be tested to verify which of the following?
• All fittings for medical gas work shall be kept separate from other tools, and kept free of grease or oil. If cleaned, only a degreaser such as ____________ is permitted.
• Under what condition is using a mechanical limiter to limit the makeup depth of a fitting brazed into medical gas piping permitted?
• Which of the following fittings is NOT permitted for joining vacuum distribution pipeline systems?
• Area alarms may monitor which of the following in addition to the other measurements?
• Instrument air systems shall be permitted to interconnect with the medical air system provided the system has __________.
• Filtration in central vacuum systems shall be sized for what percent of peak calculated demand while one is isolated?
• NFPA 99 allows how many sets of wires to connect the initiating device with the junction box for each signal?
• The NFPA 99 Code provides minimum requirements for the ________ for facilities, material, equipment, and appliances, including other hazards associated with the primary hazards.
• Which statement best describes the wiring requirement for two mandatory master alarms?
• New or replacement shutoff valves for medical gas pressure piping systems shall ______________.
• A medical gas master or area alarm panel should be set to actuate a(an) __________ indicator when the communication with an alarm-initiating device is disconnected.
• Manifolds for gas cylinders shall actuate a(an) _______ signal and shall activate an indicator at all _______ alarm panels to indicate when or just before changeover from one header to the other.
• A wireless communication device is employed in a medical gas or vacuum warning system. Which type of supervision is required for this device?
• Liquid containers shall have additional product identification visible from all directions with minimum letters of what height?
• Manifolds for gas cylinders shall consist of ______ equal headers; each with one average day's supply, but not fewer than _______ connections.
• What is the minimum distance requirement between a specified feature in the distribution system?
• Mechanical exhaust for central supply locations shall not be more than which maximum rate in cubic feet per minute (cfm)?
• Installers of Category 1 medical gas piping systems must be qualified to ASSE 6010. What is the certification requirement for installers of a Category 3 system?
• A patient care space is any space of a health care facility wherein patients are intended to be __________.
• What instrument is used to verify the removal of ambient air prior to brazing in piping?
• In the context of the dew point alarm, which value triggers the master alarm when line pressure dew point is exceeded?
• Piping between the vacuum pump and the source shutoff valve shall be permitted to be which materials?
• After completing installer-performed tests, which method shall be used to determine that no cross-connection exists?
• Item #4 on Drawing 1 is a ______ valve.
• The screening material for medical-surgical vacuum exhaust shall be fabricated using which material type?
• In the indicated vacuum system layout, the minimum distance at the point labeled #4 is what?
• Category 1 support gases are characterized by which statements?
• A chemical element that, at normal atmospheric temperatures and pressures, exists as a colorless, odorless and tasteless gas and comprises about 21% of the earth's atmosphere by volume is described as which gas?
• Audible and visual alarm indicators shall meet which requirement?
• The main line pressure, the operation and condition of the source of supply, and the reserve source (if any) shall be monitored at which alarm?
• Final line pressure regulators for bulk cryogenic liquid systems shall be of which design?
• For medical air systems, which distance is the minimum from vehicular exhausts?
• The instrument air dew point high alarm will indicate on master alarm panels when the line pressure dew point exceeds what temperature?
• In a non-anesthetizing area, on which side of a zone valve should the area alarm pressure/vacuum sensor be located?
• The medical-surgical vacuum exhaust shall be turned down and screened. The screening shall be fabricated using what type of material?
• New or replacement shutoff valves for medical gas piping systems must include which features?
• Which term describes a comprehensive set of rules that can be adopted into law without modification?
• Which standard governs the design of heating, ventilation, and process systems serving spaces in healthcare facilities?
• The master alarm system shall activate when the pressure in the main supply lines changes by what percent?
• In NFPA 99, which term best defines a low-pressure, vacuum-insulated vessel containing gases in liquid form?
• Central supply systems for nitrous oxide and carbon dioxide using cylinders or portable containers shall be prevented from reaching temperatures lower than ___°F.
• A method used to provide a source of drainage, aspiration and suction in order to remove bodily fluids from patients is called the _______.
• Which of these is a requirement for each station inlet?
• Manifolds for gas cylinders shall consist of two equal headers; each with one average day's supply, but not fewer than how many connections?
• Immediately outside each Category 1 space and anesthetizing location, there shall be located which device for each medical gas, vacuum and WAGD system?
• In a cryogenic liquid container system, the gas produced by evaporation from the secondary header shall enter the supply system upstream of which component?
• Fittings for positive pressure medical gas systems shall be cleaned for oxygen service by which entities in accordance with CGA G-4.1?
• Who shall be responsible for developing an emergency plan in the event of medical air loss at a Category 2 facility?
• An assembly of equipment that holds a capacity of oxygen greater than _____________ is defined as a Bulk Oxygen System.
• Cylinder and cryogenic liquid container outlet connections shall be designed so that the attachment point becomes ________ when removal of the outlet connection is attempted.
• Which source shall NOT be used to power the venturi of a WAGD system?
• The medical air intake shall be located a minimum of _____ from all vehicular exhausts and noxious fumes.
• Branch (lateral) lines are defined as piping sections that serve which of the following?
• Who is responsible for furnishing documentation certifying that piping materials are cleaned for oxygen service?
• Instrument air is supplied at a standard gauge pressure range of
• Final line filters for instrument air shall be equipped with a ______ visual indicator showing the status of the filter element life.
• Final line pressure controls shall be sized to ___ of the peak calculated demand.
• Which ASSE standard applies to Category 3 system installers?
• Who is authorized to install medical gas and vacuum systems?
• Receivers for medical air shall be equipped with which of the following?
• WAGD networks shall provide a WAGD inlet in all locations where which gas is intended to be administered?
• In central supply systems using gas cylinders, each header shall have a ________ valve to prevent backflow and to permit service to the header.
• Which statement best describes the function of the reserve supply in a medical gas system?
• Vacuum piping for ____________ shall be connected separately from the medical surgical system directly to the receiver tank through its own isolation valve and fluid trap located at the receiver.
• Audible and visual alarm indicators shall have a minimum size of which of the following?
• Only one service valve is required for each branch off the riser, unless the number of zone valves on that branch exceeds ______ valves?
• Which category of requirements applies to health care facility gas systems whose failure could cause imminent major injury or death?
• Which statement best describes the electrical protection required in central supply locations?
• When medical gas and vacuum systems are installed by non-certified personnel, which condition must be met?
• What is the standard gauge pressure range for most station outlets?
• When is the initial pressure test conducted by the installer?
• Which term describes a valve installed on vertical piping to supply multiple floors in a building's central supply system?
• Valve #1 is a _______.
• What term describes the vertical piping segments that feed multiple floors in a hospital gas distribution system?
• Which statement is correct regarding the materials allowed for piping between the vacuum pump and the source shutoff valve?
• WAGD stands for which term in medical gas systems?
• Which gas is described as comprising about 21% of the Earth's atmosphere by volume in the provided content?
• Inspection and testing shall be performed on all new piped gas systems, additions, renovations, temporary installations or repaired systems to assure the facility that all applicable provisions of NFPA 99C have been adhered to and system integrity has been achieved or maintained. What is required of the individual doing the testing or inspecting?
• Factory installed tubes on station inlets shall be NOT less than which size?
• Brazing procedures and brazer performance for the installation of medical gas and vacuum piping shall be qualified in accordance with which standard?
• Which term describes an outlet connection design that cannot be removed with ordinary tools?
• In a diagram of a medical gas alarm system, the sensor at position 8 is typically which type?
• When testing the final connection between new piping and an existing system, the leak detectant must NOT contain which agent?
• A ______ is an extensive compilation of provisions covering broad subject matter or that is suitable for adoption into law independently.
• Medical air compressor systems shall have a pressure relief valve set at ______percent above line pressure.
• All valves except zone valve box assemblies must be ________.
• What is the minimum stated distance for the medical air intake from all doors, windows, or other openings in a building?
• The medical air intake shall be located a minimum of _____ from all doors, windows or other openings in the building.
• Station outlets that operate at pressures other than standard gauge pressure must have labeling that includes which information?
• The check valves in an Emergency Oxygen Supply Connection are required to be constructed of which of the following materials?
• Final line filters for instrument air must be rated for at least what percentage efficiency and at what micron size?
• The minimum distance requirement at #1 is
• Which capacity defines a Bulk Oxygen System?
• For purposes of this code, an oxygen enriched atmosphere is an atmosphere where the total concentration of oxygen exceeds ______ by volume.
• If a facility where medical gas or vacuum systems are present and the failure of such equipment or system is likely to cause imminent major injury or death to patients or caregivers, the system shall be designed to meet which Category of requirements?
• Which fitting is NOT permitted for joining vacuum distribution pipeline systems?
• Which document provides the guidelines for planned medical gas system shutdown and temporary backfeed?
• Medical air compressor air intake shall be located outdoors at a minimum distance above ground level of how many feet?
• Wooden rack for cylinder storage may be permitted under which conditions?
• Computer master alarm systems must be continuously attended or provide remote signaling through which options?
• Category 1 medical-surgical vacuum sources shall, at a minimum, consist of ____________ or more vacuum pumps.
• A liquid ring compressor system shall have a reserve medical air standby header (1HR) or a ________ as backup.
• Area 2 would be classified as a _________.
• Medical gas central supply systems are NOT permitted to be located where?
• An existing system that is not in strict compliance with the provisions of this code shall be permitted to be continued in use as long as the _______ has determined that such use does not constitute a distinct hazard to life.
• Medical air filters shall be sized for 100% of the system peak calculated demand and be rated for a minimum of ______ efficiency at ______ micron or greater.
• The reserve header in a cryogenic liquid cylinder manifold system shall have sufficient cylinder connections for an average day's supply, but NOT fewer than how many connections?
• Compressed gas cylinders must meet which of the following criteria in order to be acceptable for use in an acute health care facility?
• With the approval of the authority having jurisdiction, in what areas shall the shutoff valves be permitted to be secured to prevent inappropriate access?
• Liquid ring compressors, service water and seal water shall be treated to control_________.
• To facilitate service, testing or replacement, all pressure switches and mainline gauges downstream of the source valve shall be provided with a ________________.
• Central storage must have what minimum fire-resistance rating?
• The scale range of positive pressure analog indicators shall have the normal reading fall within the ______ percentage of the gauge scale.
• Metallic flexible joints used in pipelines for vibration control: which is NOT required?
• The standard that defines the minimum cup depth for brazed joints in medical gas piping is used to ensure proper joint makeup.
• The vacuum exhaust shall not discharge __________.
• Which statement about NFPA 99 color coding for pipe labeling is correct?
• What is the standard gauge pressure (psi) for nitrogen gas service?
• Copper tube hangers for medical gas piping must be:
• The medical air dew point high alarm from each compressor site will indicate at the master alarm panels when the line pressure dew point is greater than ____________.
• The minimum backfilled cover for buried piping may be reduced to 18 inches where physical damage is prevented. Which of the following reflects that rule?
• What is the backup option for a liquid ring compressor system when a standby header is not used?
• In a cryogenic system, the gas produced by evaporation from the secondary header enters the supply system upstream of the final line regulator. Which is the correct description of its relation to the final regulator?
• Fittings, valves, and other components for oxygen use in a Category 1 distribution system shall be __________ until prepared for installation.
• Cylinders in use and in storage shall be prevented from reaching temperatures in excess of ____________.
• Bulk cryogenic liquid systems should be installed in accordance with which standard?
• Mock Exam Diagram 1 Indicates Valves #5, 6 & 13 are _______.
• Area alarm panels must provide which type of indication?
• Which standard governs instrument air quality for medical gas systems?
• Excluding outdoor locations, which NFPA 99 requirement for the wiring of each of the two mandatory master alarms?
• For medical-surgical vacuum systems, piping shall be hard-drawn, seamless copper tube type _________.
• What does it mean when equipment, material, or services are shown as 'listed'?
• It is the responsibility of the _____ to furnish documentation certifying that all installed piping materials are cleaned for oxygen service.
• Which of these is an NFPA 99 requirement for the labeling of pipes in a medical gas system?
• For station outlets with pressures not equal to standard gauge, labeling must include which information?
• Brazed joints in piping must use an alloy with a melting temperature above 1000ºF to retain integrity in fire.
• Underground piping buried outside of buildings shall be protected by a(n) __________.
• In the diagram referenced, valves #5, 6, and 13 are which type of valve?
• Branch (lateral) lines are defined as piping sections that serve a room or group of rooms on the same story.
• Pipe labels shall be located at a maximum interval of how many feet?
• NFPA 99 specifies that the medical gas piping system shall be protected against all EXCEPT which of the following?
• Alarm indicators at master alarm panels related to gas manifolds are used to indicate when or just before changeover from one header to the other.
• Which statement best completes the handling requirement for oxygen-use components before installation?
• Category 1 medical gas piping installers must be certified to ASSE 6010. Which option correctly states the certification for Category 3 installers?
• ASHRAE 170 is a standard used for which type of facilities?
• Which option can be used as an in-building emergency reserve substitute for EOSC?
• Which of the following conditions must be met where medical gas and vacuum systems are installed by non-certified personnel?
• Brazed joints shall be made using a brazing alloy that exhibits a melting temperature above which value to retain integrity in fire?
• If medical gas systems operate at pressures other than standard gauge pressures, what must be listed on the station outlet identification?
• Communication devices that do not use electrical wiring for signal transmission can use _____.
• Which statement about nitrogen service gauge pressure is accurate?
• Where is the fluid trap located in the vacuum piping arrangement described?
• The standing pressure test for positive pressure medical gas piping shall be conducted with the source valve closed and the test performed for how long and at what pressure?
• Valve #7 is the _________ where the main line enters the building.
• For buried piping, the minimum backfilled cover is 36 inches. It may be reduced to ______ inches where physical damage is prevented.
• Which action is performed first when performing the initial pressure test on medical gas piping?
• Which system shall not be permitted to be located in an outdoor enclosure?
• A low-pressure, vacuum-insulated vessel containing gases in liquid form. This is an NFPA 99 definition for which of the following.
• Storage for central supply systems should include which requirements?
• What is the purpose of a zone valve in a medical gas system?
• In a nonstandard pressure station outlet identification, which information is required?
• All valves except zone valve box assemblies shall be __________.
• In a non-anesthetizing area, NFPA 99 does not specify a requirement regarding the location of the area alarm pressure/vacuum sensor on which side of the zone valve?
• Mock Exam Diagram 1.pdf Refer to Drawing #1. Items 2 and 12 would be best described as ________.
• In stainless steel tubing, which joining method is NOT allowed?
• Which term best describes devices that monitor area pressure and trigger alarms in a medical gas system diagram?
• A standard gauge pressure of 160-185 psi applies to which of the following?
• Which of these is a requirement for area alarm panels?
• Locations for central supply systems shall have electrical devices protected from ___________.
• Which of the following filler metals shall be used to braze copper-to-copper joints in medical gas/vacuum distribution piping?
• If an existing gas system is not in strict compliance, who determines whether its continued use constitutes a hazard?
• In systems with emergency reserve, which alarm will activate when the changeover to the reserve supply occurs?
• A(n) ___________ can be used as a substitute for the EOSC at a category 1 facility.
• NFPA 70 requires what minimum number of sets of wires to connect the initiating device with the junction box for each signal?
• Which gas purge is specified for brazing medical-gas copper joints?
• The vertical pipes connecting the system main line(s) with the branch lines on the various levels of the facility are called ______.
• Which component on the station inlet is described as providing isolation of the gas supply?
• In central supply systems using gas cylinders, each header shall have a ________ valve to prevent backflow and to permit service to the header.
• To prevent damage when testing outlets/inlets, which component is required?
• In a wireless medical gas warning system, which statement best describes the required behavior if the communication link fails?
• NFPA 99 requires tubing to be cut square using a sharp tubing cutter that shall be free from grease, oil or other lubricants not suitable for oxygen service. What sort of treatment is permitted of the tube ends before brazing?
• Area alarms shall monitor which conditions in the area served?
• Which statement correctly identifies the maximum permissible temperature for cylinders stored in use?
• Which statement about Category 1 gases is true?
• Manufactured assemblies employing flexible hose shall not be labeled with which of the following?
• What component should be installed to enable service or testing of pressure sensors downstream of the source valve?
• Which criterion is used to identify compressed gas cylinders in healthcare facilities?