The space containing the cylinders for the carbon dioxide (CO2) fire extinguishing system must be designed to preclude an anticipated ambient temperature over __________.

Correct Answer: Option C — 130°F

Per 46 CFR, fixed carbon dioxide fire extinguishing system cylinder storage spaces must be designed and ventilated to preclude an ambient temperature exceeding 130°F (54.4°C) to prevent excessive pressure build-up and premature activation of safety relief devices.