If we use nitrogen to pressurize a system or blow debris out we can

• A. Hold the nitrogen for disposal
• B. Vent the nitrogen
• C. Vent to atmosphere during maintenance only
• D. Seal and return to supplier

Answer: (B)

When you use nitrogen to pressurize a system or blow debris out, you should vent the nitrogen to atmosphere to safely release the stored pressure. Venting allows the system to return to ambient pressure in a controlled way, so you can safely disconnect and service components without a sudden gas release or residual pressure pushing debris back into the line. Holding the gas for disposal or sealing and returning it to the supplier aren’t practical or standard practices for this use. Venting whenever you’re finished using the nitrogen (not just during maintenance) ensures the system is safely depressurized. Always perform venting in a well-ventilated area and follow safety protocols to avoid asphyxiation hazards.