Vent pipe outlets for purging inert gas or fuel gas must be located at least how many feet above adjacent ground level?

• A. 6 feet
• B. 8 feet
• C. 10 feet
• D. 12 feet

Answer: (B)

The correct answer is based on safety standards related to the venting of inert gases or fuel gases. Vent pipe outlets need to be elevated sufficiently to prevent any hazards that could arise from the accumulation of gases near the ground, where people may be present or equipment may be operating.

Placing the vent pipe outlets at a height of at least 8 feet above adjacent ground level helps ensure that any released gases disperse quickly into the atmosphere rather than settling close to the ground, where they could pose a risk of ignition or suffocation. This height allows for safer dissipation of potentially harmful gases and reduces the chances of re-entrainment, particularly in areas with heavy foot traffic or other potential ignition sources.

In terms of regulatory compliance and safety best practices, this height is typically recommended to mitigate risks associated with gas venting in various environments.