International Sugar Journal

Noises off: Banging sounds from pipes and vessels in a sugar factory – causes and cures † [Full subscriber]

Banging sounds from inside pipes and process vessels are clearly an undesirable situation, being indicators of large forces with the potential to damage equipment and become a safety hazard for people. The noises are usually caused by ‘water hammer’ or ‘steam hammer’ (more appropriately termed ‘steam/water hammer’ of which there are a number of distinct variations). Instances of these events that have occurred in sugar factories are described. The mechanisms involved are explained, to assist in understanding the factors that cause the events. Guidelines are given for preventing and eliminating both water hammer and steam/water hammer.…

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