What does ASHRAE standard 15 require in equipment rooms?

ASHRAE Standard 15 establishes safety requirements related to the design and installation of refrigeration systems, particularly those using flammable or toxic refrigerants. A key component of this standard is the implementation of a refrigerant monitor equipped with an alarm system and an appropriate ventilation system. This requirement is crucial in ensuring that any refrigerant leaks are detected promptly, allowing for immediate action to be taken, thereby protecting personnel from harmful exposure.

The inclusion of a ventilation system is vital as it helps to dilute and disperse any leaked refrigerants, minimizing the risk of harmful concentrations building up in equipment rooms. The monitor alerts personnel to potentially dangerous situations, ensuring safety in environments where refrigerants are used.

While other options such as pressure relief valves, regular maintenance, and backup power supplies are important in different contexts of refrigeration system operation, they do not directly address the immediate safety concerns regarding the presence of refrigerants in the same way that a refrigerant monitor does. Hence, the requirement for a refrigerant monitor with an alarm and a ventilation system is a critical measure outlined in ASHRAE Standard 15 to enhance safety in equipment rooms dealing with refrigerants.