NFPA 99 PRACTICE TEST QUESTIONS WITH ACCURATE SOLUTIONS-GRADED A+
Under which of these conditions shall the instrument Air Reserve header cylinders be
permitted to be stored with the instrument air compressor?
A) the mechanical equipment room does not contain a boiler.
B) the medical air compressors are in the same room.
C) the only motor-driven machinery in the room is for instrument air equipment.
D) the room is secured with lockable doors.
C) The only motor-driven machinery in the room is for the instrument air equipment
Riser valves are those valves located where?
A) adjacent to the main riser downstream of any zone valve.
B) anywhere in the lateral branches of the piping system.
C) in the mainline adjacent to the base of the riser.
D) in the riser adjacent to the mainline.
D) In the riser adjacent to the main line
When is the initial pressure test conducted by the installer?
A) after blowdown of the distribution piping.
B) after installation of alarm sensors.
C) before blowdown of distribution piping.
D) before installation of station rough in assembly.
A) After blow-down of the distribution piping.
,In those portions of systems intended to handle oxygen at pressure greater than 350 psi the
inter connecting hose shall not contain what materials?
A) brass.
B) copper
C) polymeric
D) stainless steel
C) Polymeric
The tool shown here allows the installer to mechanically limit the makeup depth of the
fitting to be brazed. Under what condition is this method permitted for the installation of
medical gas piping?
A) only on final line connectors.
B) only on vacuum systems.
C) where only B cup 5 brazing rod is used
D) where the limited makeup depth is not less than minimum cut depth her ANSI / ASME
recommendations
D) Where the limited makeup depth is not less than minimum cup depth current
ANSI\ASME recommendation
What is the standard gauge pressure for nitrogen gas service?
A) 15 - 30
B) 50 - 55
C) 162 185
D) it varies with system type.
,C) 50 - 55 psi
What is a NFPA 99 requirement for labeling of pipes in medical gas system?
A) color coding
B) fixed label with
C) label shall wrap completely around pipe.
D) reflective label
A) Color coding
Metallic flexible joints are being used in the pipeline for vibration control. What is NOT,
required for such a joints?
A) able tho withstand 1000 degrees
B) provide brazing extensions to allow brazing in to the pipe line.
C) received on the job site with certification of cleanliness or
D) Suitable for service at 150, p.s.i. or above
D) this is not Suitable for service at 150, p.s.i. or above
How many hours must medical air compressor system be operating normally before air
quality test can be performed?
A) 4
B) 8
C) 12
D) 32
C) 12 hours
, Who shall witness the installer perform both standing pressure test and standing vacuum
test?
A) installation contractor superintendent.
B) Medical Gas verifier
C) The authority having jurisdiction or its designee
D) a witness is not required
C) The authority having jurisdiction or its designee
Central supply system for which type of gas storage required specialized knowledge and
consideration of the information in the NFPA 55 for locating installing an inspection?
A) bulk gases
B) carbon dioxide
C) nitrous oxide
D) argon
A) Bulk gases
The medical air compressor intakes shall be located a minimum of how many feet from any
exhaust or intake?
A)10 feet
B) 12 feet
C) 15 feet
D) 25 feet
D) 25 feet
Under which of these conditions shall the instrument Air Reserve header cylinders be
permitted to be stored with the instrument air compressor?
A) the mechanical equipment room does not contain a boiler.
B) the medical air compressors are in the same room.
C) the only motor-driven machinery in the room is for instrument air equipment.
D) the room is secured with lockable doors.
C) The only motor-driven machinery in the room is for the instrument air equipment
Riser valves are those valves located where?
A) adjacent to the main riser downstream of any zone valve.
B) anywhere in the lateral branches of the piping system.
C) in the mainline adjacent to the base of the riser.
D) in the riser adjacent to the mainline.
D) In the riser adjacent to the main line
When is the initial pressure test conducted by the installer?
A) after blowdown of the distribution piping.
B) after installation of alarm sensors.
C) before blowdown of distribution piping.
D) before installation of station rough in assembly.
A) After blow-down of the distribution piping.
,In those portions of systems intended to handle oxygen at pressure greater than 350 psi the
inter connecting hose shall not contain what materials?
A) brass.
B) copper
C) polymeric
D) stainless steel
C) Polymeric
The tool shown here allows the installer to mechanically limit the makeup depth of the
fitting to be brazed. Under what condition is this method permitted for the installation of
medical gas piping?
A) only on final line connectors.
B) only on vacuum systems.
C) where only B cup 5 brazing rod is used
D) where the limited makeup depth is not less than minimum cut depth her ANSI / ASME
recommendations
D) Where the limited makeup depth is not less than minimum cup depth current
ANSI\ASME recommendation
What is the standard gauge pressure for nitrogen gas service?
A) 15 - 30
B) 50 - 55
C) 162 185
D) it varies with system type.
,C) 50 - 55 psi
What is a NFPA 99 requirement for labeling of pipes in medical gas system?
A) color coding
B) fixed label with
C) label shall wrap completely around pipe.
D) reflective label
A) Color coding
Metallic flexible joints are being used in the pipeline for vibration control. What is NOT,
required for such a joints?
A) able tho withstand 1000 degrees
B) provide brazing extensions to allow brazing in to the pipe line.
C) received on the job site with certification of cleanliness or
D) Suitable for service at 150, p.s.i. or above
D) this is not Suitable for service at 150, p.s.i. or above
How many hours must medical air compressor system be operating normally before air
quality test can be performed?
A) 4
B) 8
C) 12
D) 32
C) 12 hours
, Who shall witness the installer perform both standing pressure test and standing vacuum
test?
A) installation contractor superintendent.
B) Medical Gas verifier
C) The authority having jurisdiction or its designee
D) a witness is not required
C) The authority having jurisdiction or its designee
Central supply system for which type of gas storage required specialized knowledge and
consideration of the information in the NFPA 55 for locating installing an inspection?
A) bulk gases
B) carbon dioxide
C) nitrous oxide
D) argon
A) Bulk gases
The medical air compressor intakes shall be located a minimum of how many feet from any
exhaust or intake?
A)10 feet
B) 12 feet
C) 15 feet
D) 25 feet
D) 25 feet
