Which safety equipment is essential when using a nitrogen cylinder to pressurize a system for leak detection?

The use of a nitrogen cylinder for pressurizing a system during leak detection necessitates the incorporation of a pressure regulator as a critical safety measure. A pressure regulator is designed to control the pressure of the gas being released from the cylinder, ensuring it is reduced to a safe and manageable level for use in the system. This equipment prevents the possibility of over-pressurization, which can lead to dangerous situations, including cylinder rupture or damage to the system being tested.

Managing pressure during this process is crucial because high-pressure nitrogen can pose significant hazards, such as projectile risks or injury from uncontrolled gas release. By utilizing a pressure regulator, technicians can maintain optimal pressure levels, facilitating safe and effective leak detection while protecting both the worker and the integrity of the system.

The other options, while potentially useful in different contexts, do not specifically address the crucial need to manage the high-pressure gas from the nitrogen cylinder during the leak detection process. For example, while impervious gloves offer personal protection against chemical exposure, they do not manage the pressure hazards associated with gas use. A hand valve can control gas flow but does not regulate pressure, and a temperature gauge is not necessary for monitoring the pressure dynamics involved in this application. Therefore, the pressure regulator is essential as it