Which statement is true?

• A. Halon 1301 enclosure inspection is annual.
• B. Halon 1301 cylinders weight is checked semi-annually.
• C. CO2 checks every 60 days.
• D. All hoses tested every 2 years.

Answer: (B)

Regular maintenance for Halon 1301 systems focuses on ensuring there is enough agent in the cylinders to function when needed. The most reliable way to verify the actual amount of Halon 1301 is by weighing the cylinders, since weight directly corresponds to the mass of agent inside. Temperature changes and pressure readings can’t always reveal small losses, but a consistent weight check shows whether the charge is within acceptable limits. Performing this check about every six months keeps the system ready and helps catch leaks or losses before a discharge is required. That’s why the statement about the cylinders’ weight being checked semi-annually is the correct one.

The other items don’t align with the common maintenance cadence in this context. Enclosure inspections and CO2 checks have different prescribed frequencies, and hose testing is not typically mandated on a strict two-year cycle in this setting.