What should an operator do if the compressor takes a slug of liquid ammonia and is hydraulically pounding?

When a compressor experiences hydraulic pounding due to ingesting a slug of liquid ammonia, it indicates a significant issue with the operation of the system. Shutting off the compressor promptly and notifying management is essential for several reasons.

First, hydraulic pounding can cause severe mechanical damage to the compressor, which may lead to costly repairs or complete failure. Immediate shutdown prevents the situation from worsening and protects the integrity of the equipment.

Second, notifying management is crucial as it allows for a quick assessment of the situation. This can lead to a thorough investigation and troubleshooting by experienced personnel who can determine the underlying causes and implement appropriate corrective measures.

In contrast, reducing the compressor's speed or continuing to operate while monitoring can exacerbate the problem or may fail to resolve the underlying issue. Draining liquid ammonia could be part of a solution, but it should only be done by trained personnel following safety protocols and after the system has been safely shut down.

Addressing hydraulic pounding promptly and effectively is critical to maintaining safety, operational efficiency, and preventing equipment damage in ammonia refrigeration systems.