Medical Gas NFPA 99 Exam Prep 2025/2026 Practice Questions & Correct Answers

MEDICAL GAS NFPA 99 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS Nitrous oxide cylinders shall be prevented from reaching temperatures in excess of. - Answer -125 degrees F Carbon dioxide cylinders shall be prevented from reaching tempertaures below. - 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. - Answer -50% Completed Manufactured Assesmblies being tested at 20% above operating pressure shall not exceedthis percentage for leakage? - Answer -0.5% Activities , systems , or equipment whose failure is likely to cause major injury or death of patients, staff, or visitors. - Answer -Category 1 Activities, systems, or equipment whose failure is likely to cause minor injury to patients, staff, or visitors. - Answer -Category 2 Activities, systems, or equipment whose failure is not likely to cause injury to patients, staff, or visitors but can cause discomfort. - Answer - Category 3Activites, systems, or equipment whose failure would have no impact on patient care. - Answer -Category 4 The number of cylinders in an Instrument Air Standby header shall be adequate for this amount of time. - Answer -1 hour Orbital welded test coupons shall be inspected at the start of work and at a minimum of how many hours thereafter? - Answer -4 hours Copper Joints that have been cleaned or brazing shall be brazed within this time. - Answer -8 hours Alternative air for Medical Air compressor intakes must be at hand 7 days per week and how many hours per day. - Answer -24 hours Moisture concentration of outlets during the verifier Piping Purity Test shall not exceed this ppm. - Answer -500 ppm The local alarm of the Medial Air shall activate when the dew point is over the temperature. - Answer -35 degress F The Master Alarm will activate when the medical gas line normal pressure increases or decreases by this percentage amount. - Answer - 20% This is the approximate percentage of the earth's atmosphere that is oxygen. - Answer -21% Maximum oxygen percentage content in a Medical Air Proportioning system shall be no higher than? - Answer -23.5% Combustible liquids in medical gas systems are those which have a flash point at or above this. - Answer -100 degrees F