Steam-induced water hammer occurs when a steam line is suddenly filled with cold water and then quickly heated. The rapid heating can cause the water to flash to steam, creating a pressure wave that travels through the pipe. This can cause the pipe to rapidly expand and contract, leading to loud banging noises and potentially damaging the pipe system. It’s a phenomenon that can be dangerous and should be carefully managed to sustain integrity of the system.

Avoiding steam-induced water hammer involves a combination of good design practices, preventive maintenance, and proper operational procedures. Here are some ways to minimize the risk:

* Pipe Design: Ensure that the piping system is designed to facilitate the smooth flow of both steam and condensate. Sloping pipes and properly placed steam traps can help.
* Steam Traps: Install and regularly maintain steam traps to ensure that condensate is effectively removed from the system.
* Slow Start-Up: Gradually heat the system during start-up to allow condensate to be safely removed.
* Temperature Monitoring: Keep an eye on temperature differentials. Sudden changes can lead to water hammer.
* Insulation: Properly insulate steam lines to minimize the formation of condensate.
* Air Vents: Use air vents to help remove air from the system, which can also contribute to water hammer.
* Regular Inspection: Regularly inspect the system for any signs of wear, corrosion, or damage that could make the system more susceptible to water hammer.

Thanks to

Senior Inspection Engineer