Which of the following statements regarding gas piping installation is false?

• A. Gas piping must avoid prohibited locations
• B. Gas piping unions are always allowed
• C. Shield plates must provide adequate protection
• D. Gas vents must be correctly positioned relative to air inlets

Answer: (B)

The statement regarding gas piping unions being "always allowed" is indeed false. While unions are commonly used in gas piping installations to allow for easy disconnection of pipes, their use can be restricted based on the specific regulations and codes in place in various jurisdictions, including Alabama. Unions must be used cautiously and typically have to meet certain safety standards. The installation of gas piping is governed by strict regulations that prioritize safety, and in some cases, local codes may dictate where and how unions can be utilized to prevent any potential safety hazards, such as leaks.

In contrast, the other statements emphasize important safety practices in gas piping installation. Avoiding prohibited locations ensures that gas pipes are installed where they are secure and free from potential damage. Shield plates providing adequate protection is necessary to safeguard gas pipes from physical hazards that could compromise their integrity. Correctly positioning gas vents relative to air inlets helps ensure proper ventilation and the safe operation of gas appliances, minimizing the risk of backdrafts or gas accumulation indoors. Each of these practices is integral to ensuring both compliance with safety standards and the safe operation of gas installations.