Where should ammonia detectors be placed for effective coverage?

• A. In mechanical rooms, near potential leak sources (compressors, condensers, valves), along major lines, and in adjacent or occupied spaces.
• B. Only in the outdoor perimeter
• C. Only near the condenser
• D. Only in the basement

Answer: (A)

Detectors should provide coverage where leaks are most likely to start and where the gas could travel to warn people quickly. Mechanical rooms contain the equipment that uses and releases ammonia, so placing sensors there helps catch leaks at the source. Placing detectors near potential leak sources such as compressors, condensers, and valves monitors the main points where leaks originate. Extending coverage along major lines ensures gas moving through piping doesn’t go undetected. Having sensors in adjacent or occupied spaces adds protection for areas that people may enter, enabling fast evacuation or shutdown if a leak occurs. This approach creates multiple warning points and reduces blind spots, which is essential because relying on a single location—whether only outdoors, only near one piece of equipment, or only in one part of the building—could miss leaks and delay alerts.