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  • Users: cgmrr
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  1. cgmrr

    Rationalization of API 521 Max. 0.7 Mach Velocity

    I am retrofitting an existing gas plant flare system, which does not comply with the API 521 recommendations for maximum flare header velocities of 0.7 Mach. Does anyone know the basis of this recommendation and what the consequences of exceeding it? If 0.7 Mach is a cast-in-stone...
  2. cgmrr

    Maximum Flare Header Velocities

    Numerous references (i.e. API 521) on the subject of maximum velocities in flare headers recommend not to exceed 0.7 Mach. The only reasons given appear to be noise and vibration. I am evaluating an existing system that under maximum conditions will have velocities exceeding .7 Mach. To...

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