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Helical strakes, shrouds or slats:
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Devices fitted to the outer surface of the chimney to reduce cross wind response
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High filling velocity:, английский
The condition in a silo where the rapidity of filling can lead to entrainment of air within the stored solid to such an extent that the pressures applied to the walls are substantially changed from those without air entrainment
Hazard:, английский
For the purpose of en 1990 to en 1999, an unusual and severe event, e.g. an abnormal action or environmental influence, insufficient strength or resistance, or excessive deviation from intended dimensions
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