Which area is restricted for Class B gas types such as CO2 and HALO bottles?

• A. Kitchen cooking area
• B. Administrative office
• C. Storage room
• D. Mechanical room

Answer: (A)

Gas-based extinguishing agents like CO2 and HALO work by rapidly displacing or suppressing the air and disrupting the flame chemistry. Because of that, releasing them in occupied spaces can pose serious safety risks to people, including suffocation from oxygen loss and potential toxicity. A kitchen cooking area is a place where staff and patrons are present, and cooking activities can also complicate suppression and safety. For these reasons, such gas-type extinguishing systems are restricted there. They’re typically used in unoccupied or specially controlled spaces where evacuation and ventilation can be ensured, rather than in areas where people are routinely present.