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