When pressurizing a system with nitrogen, which option is correct?

When pressurizing a system with nitrogen, it is important to manage the pressure safely and effectively. Charging through a pressure regulator ensures that the nitrogen is introduced into the system at a controlled and safe pressure level. This prevents the risk of over-pressurization, which could damage the system or create safety hazards.

Additionally, installing a relief valve downstream of the pressure regulator adds an essential safety feature. The relief valve acts as a safeguard, allowing excess pressure to release if it exceeds the safe working limits of the system. This is especially important when dealing with pressurized gases, as it helps to prevent potential blowouts and maintains system integrity during the charging process.

Combining both methods—charging through a pressure regulator and having a relief valve installed—creates a comprehensive approach to pressurizing systems with nitrogen. This ensures that operations are conducted with a focus on safety while maintaining compliance with best practices in handling pressurized systems.