Fittings, valves, and other components for oxygen use in a Category 1 distribution system shall be __________ until prepared for installation.

• A. Kept at a minimum inventory level
• B. Stored in a locked room or secure facility
• C. Plugged or capped by the manufacturer
• D. Delivered sealed, labeled, and kept sealed

Answer: (D)

The key idea is contamination prevention and traceability for oxygen system components. In a Category 1 distribution system, fittings, valves, and similar parts must be delivered in their original sealed packaging, with proper labeling, and kept sealed until they are prepared for installation. This ensures the parts remain clean and free from oils, dust, moisture, or other residues that could contaminate the oxygen supply, which is critical because oxygen supports combustion and any contaminants can pose safety risks. Keeping them sealed also guarantees the correct item and lot are used, maintaining traceability and compliance.

Other options don’t guarantee the same level of protection. Simply keeping a minimum inventory level doesn’t address contamination or correct part identification. Storing in a locked room adds security but doesn’t ensure packaging integrity. Plugging or caps by the manufacturer may protect parts during transit, but the requirement emphasizes maintaining the seal and labeling until installation to preserve cleanliness and correct identification.