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Exam (elaborations)
Center NFPA 99 2018 Practice Test Questions : Worksheet 9 Questions with Verified Answers 
 

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---1August 20262026/2027A+
- Mains and branches in medical gas piping systems shall be not less than ______. 
 
a) 3/4" NPS 
b) 5/8" NPS 
c) 1/2" NPS 
d) 3/8" NPS - ANSWERS1/2" NPS 
 
5.1.10.11.1.2 
 
Mains and branches in medical-surgical vacuum systems shall not be less than ______. 
 
a) 7/8" NPS 
b) 3/5" NPS 
c) 5/8" NPS 
d) 1/2" NPS - ANSWERS3/4" NPS
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Brilliantscores1
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Exam (elaborations)
Center NFPA 99 2018 Practice Test Worksheet 8 Questions with Correct Answers
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---6August 20262026/2027A
- 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 B...
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Brilliantscores1
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Exam (elaborations)
Center NFPA 99 2018 Practice Test Questions: Worksheet 8 with Certified Answers
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---13June 20242023/2024A+
- 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 True 
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 True 
5.1.10.1.8For vacuum systems, piping shall be hard-drawn seamless copper tube type _____. 
a)
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GOLDENHEART
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Exam (elaborations)
Center NFPA 99 2018 Practice Test Questions with answers
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---8February 20242023/2024A+
- 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 - True 
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 - True 
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 ...
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martinndungu1986