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Modelling the Electrostatic Ignition Hazards associated with the Cleaning of Tanks Containing Flammable Atmospheres

Record type: Article

High-velocity jets of water or solvent are commonly used to clean tanks which have contained flammable liquids. This process creates a charged mist which can lead to the generation of an electrostatic spark or brush charge that may ignite any flammable atmosphere present. Operators need to know the risk associated with their processes and modelling can help assess it. Numerical techniques are available to solve electrostatic problems for general tank geometries but tend to be expensive and difficult to use. This paper shows how Green?s function can be used to solve Poisson?s equation for a vessel of cylindrical geometry and finite length containing charged mist. For uniform space charge density, an analytical solution can readily be implemented using cheaper proprietary software. An example from an industrial investigation is described in which the internal walls of a cylindrical vessel were washed with solvent jets.

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Citation

Williams, T. J. and Jones, R. T. (2001) Modelling the Electrostatic Ignition Hazards associated with the Cleaning of Tanks Containing Flammable Atmospheres Journal of Loss Prevention in the Process Industries, 14

More information

Published date: 2001
Additional Information: pp 129-133
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 256555
URI: http://eprints.soton.ac.uk/id/eprint/256555
ISSN: 0950-4230
PURE UUID: 10ff2509-3434-48e7-8979-a5db97362671

Catalogue record

Date deposited: 02 May 2002
Last modified: 18 Jul 2017 09:45

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Contributors

Author: T. J. Williams
Author: R. T. Jones

University divisions


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