NFPA99 Medical Gas Practice Exam 2025 – Your All-in-One Guide to Certification Success!

The correct answer regarding the spacing of hangers for 1" NPS medical gas piping is 6 ft. This requirement is established to ensure proper support and stability for the piping system. Properly spaced hangers prevent sagging or bending of the pipes, which is particularly crucial for medical gas piping due to the sensitive nature of the gases being transported.

Maintaining an appropriate distance between hangers is vital to ensure the integrity of the medical gas system, protecting it from damage and potential leaks. This standard is part of the guidelines set forth by NFPA 99, which helps maintain safety in healthcare facilities where medical gases are in use.

While other options may reflect hangering practices in different contexts or for different sizes of piping, the 6 ft interval is specifically aligned with the operational parameters and safety needs for 1" NPS medical gas piping. Understanding these requirements is essential for professionals working with medical gas systems to ensure compliance with safety regulations and proper installation practices.