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Pressure relief considerations for low-pressure ...

SYMPOSIUM SERIES NO. 151 # 2006 IChemE. Pressure relief considerations FOR LOW- Pressure . (ATMOSPHERIC) STORAGE tanks . Tony Ennis HAZTECH Consultants Ltd. Meridian House Business Centre, Road One, Winsford Industrial Estate, Winsford Cheshire, CW7 3QG, Telephone 44(0)1606 553840, Facsimile 44(0)1606 594144, Many storage tanks currently in use in the chemical and related industries are desig- nated as atmospheric storage vessels. Experience with the design of Pressure relief systems on such vessels has shown that the design and basis of safety for Pressure relief of atmospheric tanks is often misunderstood leading to situations where the tank may be subjected to pressures outside of the design limitations.

various pressure relief cases applicable to storage tanks are considered and the appro-priate sizing calculations discussed in order to provide safe venting of the system. Various types of pressure relief arrangements are described and their application to differing process conditions and materials is discussed. The key differences between the ...

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