RMGA Medical Gas Cylinder Management & Storage 1 — Questions and Answers
Question 1: According to NFPA 99, what minimum distance must be maintained between medical gas cylinder storage areas and combustible materials?
- 5 feet
- 10 feet
- 20 feet (Correct answer)
- 25 feet
Correct answer: 20 feet
NFPA 99 requires a minimum of 20 feet of separation between cylinder storage and combustible materials, or a non-combustible barrier at least 5 feet high.
Question 2: Which federal agency has primary jurisdiction over the transportation and qualification of medical gas cylinders in the United States?
- FDA
- OSHA
- DOT (Correct answer)
- EPA
Correct answer: DOT
The Department of Transportation (DOT) regulates the manufacture, qualification, requalification, and transportation markings required for medical gas cylinders.
Question 3: What is the maximum volume of nonflammable medical gases that may be stored in a single unenclosed area before a dedicated storage room is required per NFPA 99?
- 300 cubic feet
- 1,000 cubic feet
- 3,000 cubic feet (Correct answer)
- 5,000 cubic feet
Correct answer: 3,000 cubic feet
NFPA 99 requires a dedicated, properly ventilated storage room when the aggregate volume of nonflammable medical gases in a single area exceeds 3,000 cubic feet.
Question 4: How should empty medical gas cylinders be managed in a healthcare facility?
- Stored together with full cylinders to save space
- Segregated, clearly labeled 'empty,' and stored in a separate area (Correct answer)
- Depressurized to 0 psig before storage
- Immediately returned to the supplier without further action
Correct answer: Segregated, clearly labeled 'empty,' and stored in a separate area
Empty cylinders must be clearly labeled and stored separately from full cylinders to prevent accidental use and to maintain proper inventory control.
Question 5: What minimum residual pressure should be maintained in a returnable medical gas cylinder before sending it back to the supplier?
- 0 psig — fully depressurize before return
- 25 psig (Correct answer)
- 100 psig
- 200 psig
Correct answer: 25 psig
Maintaining a minimum of 25 psig of residual pressure prevents ambient air and contaminants from entering the cylinder, preserving gas purity for the next fill.
Question 6: Which standard is the primary reference for cylinder storage requirements in U.S. healthcare facilities?
- NFPA 101
- NFPA 99 (Correct answer)
- ANSI Z49.1
- CGA G-4
Correct answer: NFPA 99
NFPA 99, Health Care Facilities Code, contains the authoritative requirements for medical gas storage, handling, and distribution in healthcare environments.
Question 7: When should the contents label and pressure of a medical gas cylinder be verified?
- Only upon initial receipt from the supplier
- At weekly scheduled inventory checks only
- Before each use and upon receipt from the supplier (Correct answer)
- Only when the regulator pressure gauge reads below 500 psig
Correct answer: Before each use and upon receipt from the supplier
Cylinders must be verified for proper gas type and adequate pressure both when received and before each patient-care use to ensure safety and prevent errors.
RMGA Medical Gas Cylinder Management & Storage 1
According to NFPA 99, what minimum distance must be maintained between medical gas cylinder storage areas and combustible materials?