An equipment has an appliance that uses r717 under ashrae standard 15 which piece of equipment is not compulsory in the room

• A. Refrigerant detector
• B. Ventilation
• C. Emergency shutdown
• D. Alarm signage

Answer: (A)

In this case, the safety provisions for an ammonia (R717) refrigeration room focus on preventing exposure by controlling ventilation, stopping the system when something goes wrong, and clearly warning people about the hazard. Mechanical ventilation is required to dilute any leaked gas so concentrations stay below unsafe levels, an automatic emergency shutdown is typically mandated to isolate the system if a fault or leak is detected, and there must be clear alarm signage so occupants know there’s a hazard and what to do. A fixed refrigerant detector is not listed as a compulsory component by ASHRAE 15 for this situation. Detectors are common and valuable for rapid detection, but the standard does not require them in every room; their inclusion may depend on risk assessment, local codes, or specific plant design.