Transient mitigation & control strategies
Just a heads-up—this section is still a work in progress! I’ll be revising and expanding it soon to make sure it’s as useful as possible. Curious about what’s already done or currently in the works? Check the changelog for updates.
Identifying and quantifying potential transient problems through modeling is the first crucial step; the next, equally important, step is implementing appropriate mitigation measures to protect your system. This section describes the various engineering strategies and specialized devices used to control and suppress water hammer. We'll categorize these into passive surge protection devices, which operate automatically based on system hydraulics, and active devices, which may involve more complex controls or external power.
Examples of passive devices include open surge tanks (standpipes), closed surge vessels (often called air chambers, accumulators, or hydropneumatic tanks, sometimes with internal bladders to separate air and water), and specialized non-return (check) valves that are designed with dashpots or other mechanisms for controlled, slower closing to prevent check valve slam.
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