In what scenario can multiple pressure relief valves be beneficial?

Multiple pressure relief valves can be beneficial primarily in providing redundancy for safe operation in refrigeration systems. When one valve operates or if one becomes inoperable for any reason, the other valves provide an additional layer of protection, ensuring that the system does not exceed the maximum allowable pressure. This redundancy is crucial because it helps to prevent the risk of system failure or equipment damage due to overpressure conditions.

For instance, in a complex refrigeration system where maintaining pressure is vital for performance and safety, having multiple relief valves can act as a safeguard, so if one fails or is blocked, the others can still function. This approach enhances safety and reliability, making it a standard practice in many industrial applications where pressure management is critical.

While other options such as increasing efficiency, system maintenance, or calibration are important aspects of managing refrigeration systems, they do not specifically address the safety concern that redundancy offers in managing system pressures effectively.