%0 Conference Paper %1 Ackroyd:2003a %A Ackroyd, G. P. %A Puttick, S. %B Electrostatics 2003 %D 2003 %E Morgan, H. %K brush-discharge electrostatic ignition plastic propagating-brush risks %N 178 %P 25--30 %T Investigation of the electrostatic ignition risks associated with plastic coated metals %X It is often assumed that, where an electrically insulating plastic is present as a thin coating on an earthed metal substrate (as is the case with lined pipework and vessels), incendive brush discharges will not occur. In this situation, the critical thickness for determining whether a coating is thin is generally taken to be 2 mm. However, the experimental work detailed in this report shows that ignitions of a typical flammable gas / vapour atmosphere were obtained by brush discharges from a 0.7 mm thick PFA coating and 0.85 mm thick ECTFE coating. For the samples examined, the limiting charge transfer for ignitions to occur was approximately 100--150 nC. This corresponded to surface potentials of $\sim$ 8--10 kV (equivalent to a surface charge density of $\sim$180--260 \muC/m$^2$).

@inproceedings{Ackroyd:2003a, abstract = {It is often assumed that, where an electrically insulating plastic is present as a thin coating on an earthed metal substrate (as is the case with lined pipework and vessels), incendive brush discharges will not occur. In this situation, the critical thickness for determining whether a coating is \em{thin} is generally taken to be 2 mm. However, the experimental work detailed in this report shows that ignitions of a typical flammable gas / vapour atmosphere were obtained by brush discharges from a 0.7 mm thick PFA coating and 0.85 mm thick ECTFE coating. For the samples examined, the limiting charge transfer for ignitions to occur was approximately 100--150 nC. This corresponded to surface potentials of $\sim$ 8--10 kV (equivalent to a surface charge density of $\sim$180--260 {\mu}C/m$^2$).}, added-at = {2010-01-05T11:52:19.000+0100}, author = {Ackroyd, G. P. and Puttick, S.}, biburl = {https://www.bibsonomy.org/bibtex/297bede143383cc18dfa390c58ff34ec8/sjp}, booktitle = {Electrostatics 2003}, description = {brush and propagating brush discharge experiments on coated metals}, editor = {Morgan, H.}, interhash = {ee279db7675a2916573e2daae100270f}, intrahash = {97bede143383cc18dfa390c58ff34ec8}, keywords = {brush-discharge electrostatic ignition plastic propagating-brush risks}, month = {23--27~March}, number = 178, pages = {25--30}, series = {Institute of Physics Conference Series}, timestamp = {2010-01-19T17:39:44.000+0100}, title = {Investigation of the electrostatic ignition risks associated with plastic coated metals}, year = 2003 }