Flow Induced Vibartion can be a very broad terminology. However by this term we mainly refer to vibration caused mainly due to pressure pulsations due to high turbulence and boundary layer separation at elbows, valves etc.The lines susceptible to the same is best identified by screening using a LOF parameter and a cut off velocity of 0.5 Mach is recommended.The solution methodologies , besides branch bracing, also involves the computation of pulsating drag force , which is the dynamic pressure tims area times acoustic and mechanical magnification factors and a form factor. The bending stresses due to this pulsating drag force is computed and it is recommended to keep below an allowable limit, say endurance limit.

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