Which stripe pattern denotes Halon piping?

• A. H.P. Air - DARK GRAY
• B. Helium - BUFF
• C. Helium and Oxygen - striped BUFF and GREEN
• D. Halon - Striped GRAY AND WHITE

Answer: (D)

Piping contents on ships are identified by color and stripe patterns, so the markings quickly tell you what’s inside. Halon fire suppression piping uses a striped gray and white pattern. That distinct combination is what you’d look for to recognize Halon piping, which is important for safe handling and during firefighting procedures. Other substances have different markings—high‑pressure air tends to be a solid dark gray, helium is buff, and a helium–oxygen mix is buff and green striped—so the gray and white stripes are uniquely tied to Halon.