The Causes and Effects of Water Hammer

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The Causes and Effects of Water Hammer

Water hammer is a pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change).

Water hammer has the potential to rupture valves, pipes, and fittings. Condensate can collect on the bottom of steam lines, out of the flow path, so it requires some external means, like gravity for instance, to move it through the system.

While damage is most often caused by repeated occurrences of water hammer, sometimes damage can be immediate and catastrophic, and sometimes harmful to employee safety.

Source: Armstrong International YouTube

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  1. I have experienced several times while working at Gas Purification Plant Sui Gas Field. The reason being when ever in a cold/hot steam condensate or process pipes ( hot or cold steam condensate is mixed). Solution always drain the cold steam condensate then introduce hot steam condensate to warm the lines. Otherwise catastrophic situation occurs ( damaging of flange joints/rupture of pipes).