Medical Gas NFPA 99 2026 Questions
and Verified Answers
Nitrous oxide cylinders shall be prevented from reaching temperatures in excess of. - <CORRECT
ANSWER >>125 degrees F
Carbon dioxide cylinders shall be prevented from reaching tempertaures below. - <CORRECT
ANSWER >>20 degrees F
Central supply systems for positive pressure gasses shall have one or more relief valves with the
relief setting above nromal operating pressure. - <CORRECT ANSWER >>50%
Completed Manufactured Assesmblies being tested at 20% above operating pressure shall not
exceedthis percentage for leakage? - <CORRECT ANSWER >>0.5%
Activities , systems , or equipment whose failure is likely to cause major injury or death of
patients, staff, or visitors. - <CORRECT ANSWER >>Category 1
Activities, systems, or equipment whose failure is likely to cause minor injury to patients, staff,
or visitors. - <CORRECT ANSWER >>Category 2
Activities, systems, or equipment whose failure is not likely to cause injury to patients, staff, or
visitors but can cause discomfort. - <CORRECT ANSWER >>Category 3
Activites, systems, or equipment whose failure would have no impact on patient care. -
<CORRECT ANSWER >>Category 4
The number of cylinders in an Instrument Air Standby header shall be adequate for this amount
of time. - <CORRECT ANSWER >>1 hour
, Orbital welded test coupons shall be inspected at the start of work and at a minimum of how
many hours thereafter? - <CORRECT ANSWER >>4 hours
Copper Joints that have been cleaned or brazing shall be brazed within this time. - <CORRECT
ANSWER >>8 hours
Alternative air for Medical Air compressor intakes must be at hand 7 days per week and how
many hours per day. - <CORRECT ANSWER >>24 hours
Moisture concentration of outlets during the verifier Piping Purity Test shall not exceed this
ppm. - <CORRECT ANSWER >>500 ppm
The local alarm of the Medial Air shall activate when the dew point is over the temperature. -
<CORRECT ANSWER >>35 degress F
The Master Alarm will activate when the medical gas line normal pressure increases or
decreases by this percentage amount. - <CORRECT ANSWER >>20%
This is the approximate percentage of the earth's atmosphere that is oxygen. - <CORRECT
ANSWER >>21%
Maximum oxygen percentage content in a Medical Air Proportioning system shall be no higher
than? - <CORRECT ANSWER >>23.5%
Combustible liquids in medical gas systems are those which have a flash point at or above this. -
<CORRECT ANSWER >>100 degrees F
The quality of instrument air shall be filtered to this micron level. - <CORRECT ANSWER >>0.01
and Verified Answers
Nitrous oxide cylinders shall be prevented from reaching temperatures in excess of. - <CORRECT
ANSWER >>125 degrees F
Carbon dioxide cylinders shall be prevented from reaching tempertaures below. - <CORRECT
ANSWER >>20 degrees F
Central supply systems for positive pressure gasses shall have one or more relief valves with the
relief setting above nromal operating pressure. - <CORRECT ANSWER >>50%
Completed Manufactured Assesmblies being tested at 20% above operating pressure shall not
exceedthis percentage for leakage? - <CORRECT ANSWER >>0.5%
Activities , systems , or equipment whose failure is likely to cause major injury or death of
patients, staff, or visitors. - <CORRECT ANSWER >>Category 1
Activities, systems, or equipment whose failure is likely to cause minor injury to patients, staff,
or visitors. - <CORRECT ANSWER >>Category 2
Activities, systems, or equipment whose failure is not likely to cause injury to patients, staff, or
visitors but can cause discomfort. - <CORRECT ANSWER >>Category 3
Activites, systems, or equipment whose failure would have no impact on patient care. -
<CORRECT ANSWER >>Category 4
The number of cylinders in an Instrument Air Standby header shall be adequate for this amount
of time. - <CORRECT ANSWER >>1 hour
, Orbital welded test coupons shall be inspected at the start of work and at a minimum of how
many hours thereafter? - <CORRECT ANSWER >>4 hours
Copper Joints that have been cleaned or brazing shall be brazed within this time. - <CORRECT
ANSWER >>8 hours
Alternative air for Medical Air compressor intakes must be at hand 7 days per week and how
many hours per day. - <CORRECT ANSWER >>24 hours
Moisture concentration of outlets during the verifier Piping Purity Test shall not exceed this
ppm. - <CORRECT ANSWER >>500 ppm
The local alarm of the Medial Air shall activate when the dew point is over the temperature. -
<CORRECT ANSWER >>35 degress F
The Master Alarm will activate when the medical gas line normal pressure increases or
decreases by this percentage amount. - <CORRECT ANSWER >>20%
This is the approximate percentage of the earth's atmosphere that is oxygen. - <CORRECT
ANSWER >>21%
Maximum oxygen percentage content in a Medical Air Proportioning system shall be no higher
than? - <CORRECT ANSWER >>23.5%
Combustible liquids in medical gas systems are those which have a flash point at or above this. -
<CORRECT ANSWER >>100 degrees F
The quality of instrument air shall be filtered to this micron level. - <CORRECT ANSWER >>0.01
