Center NFPA 99 2018 Practice Test
Worksheet 8 Questions with Correct
Answers
Fittings for positive pressure medical gas systems must be cleaned for oxygen service
by the manufacture, supplier or other agency prior to installation.
a) True
b) False - ANSWERSTrue
5.1.10.1.1
It is the responsibility of the installer to furnish documentation certifying that all installed
piping and materials are cleaned for oxygen service.
a) True
b) Flase - ANSWERSTrue
5.1.10.1.8
For vacuum systems, piping shall be hard-drawn seamless copper tube type _____.
a) ASTM B88
b) ASTM B819
c) ASTM B280
d) any of the above - ANSWERSany of the above
5.1.10.2.1 (1)(a)(b)(c)
Which of the following piping materials shall be permitted for field-installed medical-
surgical vacuum distribution piping systems?
a) galvanized pipe
b) plastic pipe
c) stainless steel pipe
d) none of the above - ANSWERSstainless steel pipe
5.1.10.2.1 (2)
Threaded joints in medical gas and vacuum distribution piping shall be limited to
______.
, a) pressure and vacuum indicators.
b) alarm devices.
c) demand check fittings.
d) all of the above. - ANSWERSall of the above
5.1.10.8 (1)
Threaded joints shall be allowed on the source equipment on the source side of the
source valve.
a) True
b) False - ANSWERSTrue
5.1.10.8 (1)
Brazed joints shall be made using a brazing alloy that exhibits a melting temperature in
excess of ______ to retain the integrity of the piping system in the event of fire.
a) 800*F
b) 1,000*F
c) 1,200*F
d) 2,400*F - ANSWERS1,000*F
5.1.10.4.1.3
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 - ANSWERSBCup series
5.1.10.4.1.7
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 is required of
the tube ends after cutting?
a) shall be reamed or rolled smooth.
b) shall be filed.
c) shall be re-cleaned.
d) shall be deburred or rolled smooth. - ANSWERSshall be deburred or rolled smooth.
5.1.10.4.2.3
Worksheet 8 Questions with Correct
Answers
Fittings for positive pressure medical gas systems must be cleaned for oxygen service
by the manufacture, supplier or other agency prior to installation.
a) True
b) False - ANSWERSTrue
5.1.10.1.1
It is the responsibility of the installer to furnish documentation certifying that all installed
piping and materials are cleaned for oxygen service.
a) True
b) Flase - ANSWERSTrue
5.1.10.1.8
For vacuum systems, piping shall be hard-drawn seamless copper tube type _____.
a) ASTM B88
b) ASTM B819
c) ASTM B280
d) any of the above - ANSWERSany of the above
5.1.10.2.1 (1)(a)(b)(c)
Which of the following piping materials shall be permitted for field-installed medical-
surgical vacuum distribution piping systems?
a) galvanized pipe
b) plastic pipe
c) stainless steel pipe
d) none of the above - ANSWERSstainless steel pipe
5.1.10.2.1 (2)
Threaded joints in medical gas and vacuum distribution piping shall be limited to
______.
, a) pressure and vacuum indicators.
b) alarm devices.
c) demand check fittings.
d) all of the above. - ANSWERSall of the above
5.1.10.8 (1)
Threaded joints shall be allowed on the source equipment on the source side of the
source valve.
a) True
b) False - ANSWERSTrue
5.1.10.8 (1)
Brazed joints shall be made using a brazing alloy that exhibits a melting temperature in
excess of ______ to retain the integrity of the piping system in the event of fire.
a) 800*F
b) 1,000*F
c) 1,200*F
d) 2,400*F - ANSWERS1,000*F
5.1.10.4.1.3
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 - ANSWERSBCup series
5.1.10.4.1.7
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 is required of
the tube ends after cutting?
a) shall be reamed or rolled smooth.
b) shall be filed.
c) shall be re-cleaned.
d) shall be deburred or rolled smooth. - ANSWERSshall be deburred or rolled smooth.
5.1.10.4.2.3
