Why is the maximum quantity of NH3 for indirect systems capped at specific amounts?

The maximum quantity of ammonia (NH3) for indirect systems is capped primarily to mitigate safety hazards. Ammonia is a highly toxic and potentially hazardous substance, and limiting its quantity helps to reduce the risks associated with leaks, spills, and exposures. By controlling the volume of NH3 within the system, authorities can minimize the potential for hazardous situations that could endanger workers, the public, and the environment.

Mitigating safety hazards also involves considerations of emergency response and the containment of risks in case of an incident. A regulated maximum ensures that the systems are designed with a safety buffer, allowing for better management of the substance in day-to-day operations and in unexpected scenarios.

While reducing costs, ensuring system efficiency, and complying with regulations are also relevant factors in the broader context of ammonia use in industrial applications, the primary reason for setting specific caps focuses directly on safety and risk management concerning the substance’s known hazards.