How many egresses (exits) gates are required for outdoor enclosures containing medical gas supply systems?
1
2
3
NFPA 99 does not state a requirement
A positive pressure supply system has duplex line regulators piped in parallel. Which of these is NOT a requirement for the regulators?
Constructed of any materials deemed suitable by the manufacturer for the service.
Each regulator sized for 110 percent of peak calculated demand
Isolation or check valves on the patient side of the regulators
Isolation valves on the source side of each regulator
What is the standard vacuum pressure for WAGD?
50-55 PSI
345-380 kPa
380 mm to 760 mm
It varies with the type of system
A valve installed in each med gas and vacuum system shall be tested to verify which of the following?
Date of installation
Flow and pressure drops
Pressure range
Proper operation and rooms or areas of control
Brazing procedures and brazer performance for the installation of med gas and vacuum piping shall be qualified in accordance with which ?
ASME section IX
ASSE standard 6010
ASTM B828
AWS B313
A new bulk system is to be installed at a local hospital; therefore, new wiring from the local panel on the bulk must be run underground to the entry point of the facility. At a minimum, how many sets of wires for each signal are allowable between the initiating device at the bulk and junction box located in the facility?
1 or 2
1 or 3
2 or 3
2 or 4
Which are may be acceptable to communicate with indoor central supply sources of oxygen, nitrous oxide, or mixtures of these gasses?
An in-building emergency reserve location
Anesthetizing location
Areas of open flame
Kitchen
Medical Gas Systems shall be deemed breached at the point of pipeline intrusion ___ or by system component removal, or addition.
Closing of Valve
Cylinder change out
Physical separation
Testing
Who shall witness both the installer performed standing pressure test and standing vacuum test?
Installation contractor superintendent
Medical gas verifier
The authority having jurisdiction or its designee
A witness is not required
A medical air compressor intake piping shall be located a minimum of how many feet from any vent?
10
12
15
25
Nitrous Oxide portable containers shall be prevented from reaching temperatures lower than how many degrees Fahrenheit?
20
0
Minus 20
Minus 29
Medical air quality monitoring for dew point shall activate a local alarm and ___ when dew point at system pressure exceeds ____ degrees Fahrenheit.
A local alarm and area alarm; +39
All master alarms; +35
All master alarms; +39
All master alarms; +41
Which gas or vacuum system is considered a medical support gas?
Carbon dioxide
Medical air
Nitrogen
WAGD
Which of these is an acceptable location for the exhaust of medical vacuum?
Away from public places
Indoors
Next to medical air intake
Underground
If copper tube in medical gas system is to be joined using memory metal fittings having a temperature rating of 1000 degrees Fahrenheit the fittings must have a pressure rating of not less than how many psi?
150
300
500
These fittings do not meet the temperature requirement for joining copper tube
Medical gas piping shall be labeled by ____ identifying it as a patient medical gas, the support gas, or the vacuum system.
Color coding each valve
Hang-tags every 20' and in each room
Painting the entire piping system
Stenciling or adhesive markers
Non-certified personnel are permitted to install a category 3 piped med-gas delivery system only under which of these conditions?
The installing contractor is certified
when the foreman is certified
when working directly with an ASSE 6010 certified installer
This is never permitted
Nitrous Oxide source supplies shall be prevented from reaching temperatures lower than how many degrees Fahrenheit?
+32
+20
-20
-22
Central supply systems for _____, located outside of a facility with a total capacity connected and in storage of 20,000 cu ft or more at standard temperature and pressure, shall comply with NFPA 55.
Nitrous oxide
Oxygen
Storage
According to NFPA 99, electrical devices in manifold rooms must be elevated at least how many feet off the floor to protect them from damage?
5
There is no height requirement
Which of these is a requirement when patient medical gasses are piped into areas where their use would not be under supervision of a licensed clinician using them for a purpose clearly relevant to patient treatment?
The outlets for such piping must clearly indicate "NOT FOR PATIENT USE"
The piping must be clearly labeled "NOT FOR PATIENT USE"
This arrangement is only permitted where defined risk assessment has determined the facility to be a category 3
Patient medical gasses are NOT permitted to be piped in such areas
Intake air for instrument air compressor shall be permitted to be drawn from
Ducted air or from the air handler exhaust only
Outside, from ducted air, or from the equipment location
The equipment location only
Within 5 feet of the vacuum exhaust
Medical gas alarm wiring shall be protected by which of the following ? Choose answer that includes ALL permitted options.
Conduit, or free air
Conduit, free air, or wire
Conduit, free air, wire, or cable tray
Conduit, free air, wire, cable tray, or raceways
All station outlets and inlets shall be identified as to name or _____ for the specific medical gas or vacuum provided.
chemical symbol
color
operating pressure
style(quick-connect or DISS)
How long must the initial pressure test for the piping of medical gasses and vacuum systems by maintained?
8 hours
24 hours
Until 25% of the joints have been examined for leakage
Until 100% of the joints have been examined for leakage
According to the 2012 NFPA 99 there are now four relevant patient care categories for medical gasses, and the criteria used to determine which to apply is to perform a defined risk assessment. Which of the following lists the essential criteria which best describe the four categories?
Death or major injury, minor injury, patient discomfort, no impact
Hospital, outpatient facility, dental facility, laboratory
Level 1, Level 2, Level 3, Level 4
Medical, semi-medical, non-medical, mechanical
Which of these is requirement for both the primary and secondary headers for manifolds which contain cryogenic liquid?
Installed indoors only
Installed outdoors only
Located in same enclosure
Located remote from the facility
When low-pressure threaded connections are employed in gas equipment they must be in accordance with the applicable sections of which of the following publication?
ASHRAE Handbook of Fundamentals
CDA copper tube handbook
CGA V-5 Diameter index safety system
The joint commission comprehensive accreditation manual for hospitals
The 24 hour standing pressure test of the positive pressure piping system shall be witnessed by which of these individuals or entities?
Authority having jurisdiction
general contractor
inspector
verifier
Which of the following hazards does NFPA 99 specify shall be considered in the design, installation, testing, and maintenance of medical gas and vacuum piping systems?
Contamination
Fire and explosion
Fire and smoke
WAter and gas
Piping systems for patient gas/vacuum shall ___ used for distribution of flammable anesthetic gasses.
Be cleaned after being
Be replaced after being
Be tagged while being
NOT be
In category 3 medical gas distribution systems the initial cross connection test requires the individual gas system being tested to be pressurized to how many pounds per square inch?
50
60
75
A minimum of 150
Which type of gas storage system requires specialized knowledge and consideration of the information in the NFPA 55 for locating, installing, and inspection?
Bulk cryogenic systems
Instrument air
Manifolds located indoors
In an emergency oxygen supply connection the check valves are required to be constructed of which of the following materials?
Brass, bronze, or stainless steel
Brass or Bronze
Materials per the manufacturers recommendations
NFPA 99 does NOT establish any material requirements for these check valves
The accuracy of digital pressure indicators shall be plus or minus what percent of the operating pressure at which they are used?
2%
3%
4%
5%
What minimum clearance (inches) is required around the EOSC?
24
36
NFPA does not state a requirement
Metallic flexible joints are being used in the pipeline for vibration control. Which of the following is NOT true of such joints?
Able to withstand temperatures of 1000 degrees Fahrenheit
Provided with brazing extensions to allow brazing into the pipeline
Received on jobsite with certification of cleanliness
Suitable for service at 150 psi or above
Which of the following is NOT acceptable for the outlet connections of cylinders of cryogenic liquid containers?
They shall be designed to render the attachment point unusable when removed
They shall be gas specific
They shall be integral to the valve
The shall be removed with ordinary tools
Which of these methods is NOT permitted for a label identification of med gas or vacuum system piping?
Adhesive markers with the name of system
Stenciling name of system
Stenciling the chemical symbol
Each of these labeling methods is acceptable
Threaded connections in the medical gas piping distribution system are NOT permitted for which of the following devices?
Alarm devices
In-line check valves
Pressure indicators
Vacuum indicatiors
When installed in ____ copper tube hangars that are in contact with the tube. A plastic-coated or otherwise electrically insulated from the tube.
Extremely dry locations
Locations with temperatures below 32 degrees Fahrenheit
Potentially damp location
Underground locations
What is the name of the valve located off the main where the piping runs up through the building?
In-line
Main
Riser
Source
What is the term for the external device used for the temporary supply of oxygen?
CGA
EOSC
POC
PRV
Which of these is a requirement for wireless communication devices employed in medical gas warning systems?
Electronic shielded
Installed at the med gas or vacuum source
located at a control desk
Supervised such that failure of communication will initiate an alarm
When/where are flexible metallic joints permitted in the med-gas pipeline?
Only on the patient side of the source valve
Only on the source side of the source valve
when provided with extensions for brazing
when suitable for service at 150 psig or above
In med-gas piping systems. Off the main line before any distribution . What is the name of this valve?
An occlusion
Main valve
Service Valve
Source Valve
A plumbing contractor, certified as an ASSE 6010 installer, is installing the med-gas system in a new category 1 facility. When is it permissible for his employees who are not certified as ASSE 6010 installers to install piing or components of the med-gas systems?
When work involves equipment and not piping
When working directly with an installer
When working for a contractor who is certified, installers are not required to be certified
Workers who are not certified are NOT permitted to install med-gas piping or equipment
Which test shall follow the initial blow down test?
Initial cross connection test
Initial piping purge test
Initial pressure test
Standing pressure test
Where piping tests are required. The test gas shall be ___ ___ ____ ____ __ __.
Compressed oil-free dry air
Oil-free dry nitrogen NF
Source gas
Any of the above
Medical AIr sources shall be used only for____ and calibration of medical respiratory devices
Human Respiration
Air-operating devices
Instrument Air
All of Above
The emergency oxygen supply connection shall be installed on the exterior of the building being served, protected from physical damage, and with a minimum of how many feet of clearance around the Connection?
Minimum clearance is to be determined by the facility risk assessment
There is NO minimum clearance requirement
NFPA 99 requires that personnel using cylinder and containers shall be familiar with which of the following?
Diameter-index safety system
Pin-index safety system
Spacing and insulation appropriate to the frequency involved
Both A and B
When compnents have been replaced in manifolds or compressors the system is considered breached and shall be required to be?
Approved by the AHJ
Approved by the manufacturer
Inspected and tested
There is no further equipment
Which organization is responsible for determining the correct occupancy of an area within a health care facility?
The Facility
The general contractor
The installer
The verifier
Zone valves are NOT permitted to be installed in which of these locations?
In the same room as the outlets and inlets that it serves
On the same floor as the outlets and inlets that it serves
With a wall between the outlets and inlets that it serves
With valves placed for ready access
Where WAGD is produced by the medical surgical vacuum source the total concentration of oxidizers shall be maintained below ______ percent?
19.5
20.6
22.6
23.6
Which of the following statements is NOT permitted for joining vacuum distribution pipeline systems?
Axially swaged
Memory metal
Non- removable push-fit
Welded
How many hours must the medical air compressor system be operating normally before air quality test be performed?
8
32
Which of the following types of tubes may NOT be used to construct the medical air intake piping?
ASTM B 280 copper ACR tube
ASTM B 88 (type K, L, or M)
Black Pipe (Schedule 40)
Stainless steel tube
THe installer shows documentation that the intial pressure test for the vacuum system was conducted at 50 PSI. What pressure should the installer have performed this test?
30 in. HG
30 PSi
60 PSI
150 PSI
What is the classification for a patient care room in which failure of equipment could result in major injury to a patient. Which type of facility is this considered under the code?
Basic care
Critical care
General care
Support
A facility has an ICU where failure of the medical gas system could result in major injury to a patient. Which type of facility is this considered under the code?
Category 1
Category 2
Level 1
Level 2
Which of the following statements is NOT correct relative to an Emergency Oxygen Supply Connection (EOSC)
A female Dn (NPS) inlet connection for the EOSC must be sized for 100 percent of the system demand
A high pressure oxygen reserve with a capacity with one hours supply may be substituted for the EOSC
An EOSC must be provided with a minimum 3 feet of clearance around the connection
Each free standing building served from a single oxygen source must be afforded the benefit that comes from an EOSC or adequate substitute is required to be provided with a separate emergency connection
Service and sealed water used for liquid ring compressors shall be _____ to protect against waterbourne pathogens
Hyper-chlorinated water
Reclaimed water
Soft water
Treated water
Which procedure is allowable for the tube end preparation while installing copper tubing for a medical gas distribution system?
Cleaning with steel wool
Cutting with a reciprocating saw
Reaming
Rolled smooth or de-bured
Which of these is true for the installation of alarm sensors?
In secured areas
Permanently
So as to be removable for testing
With threaded connection
Which of the following is a requirement for the configuration of a zone valve box?
Located in the room it serves
Locked so that is inaccessible to the public
Placed such that a wall intervenes between the valves and the outlets/inlets they control
Serve outlets/inlets located on 2 or more floors
Standard depth copper fittings for brazing shall be mechanically limited to a make-up depth that is not less than the?
ANSI/ASME standard for brazing
ANSI/ASME standard for soldering
Tool manufacturers recommendations
NFPA 99 does not permit mechanical limitation to alter the make-up depth of a fitting
Central supply systems for ____, located outside of a facility with a total capacity connected and in storage of 20,000 cu. Ft. or more at standard temperature and pressure, shall comply with NFPA 55
Carbon Dioxide
Nitrous Dioxide
A medical air proportioning system shall have a local alarm that monitors which of the following conditions? Choose the answer that includes ALl permitted options.
The medical air concentration is NOT consifered
The warning system indicates nonconforming oxygen concentrations
The medical air has a reserve
The proportioning system is simplex
Drops to individual station outlets and inlets shall be not less than?
3/8 O.D.
1/2 O.D.
5/8 O.D.
3/4 O.D.
Which of the following are required when installing shutoff valves for connection of future piping?
Locked or latched closed
Identified and labeled
Brazed extension and capped
All of above
Area alarm panels for medical/surgical vacuum systems shall indicate if the vacuum in the area drops below______gauge Hg/v
29.9 in.
30 in.
12 in.
10 in.
