TY - CONF A1 - Blanchard, R. A1 - Holtappels, Kai A1 - Kluge, Martin A1 - Schildberg, H.-P. A1 - Zeps, Robert ED - de Rademacher, E. ED - Schmelzer, P. T1 - Sizing of Explosion Pressure Relief using the Efflux Function N2 - Determination of deflagration venting requirements in chemical/process plants is usually carried out using well established standards employing an empirically based formula. However, this formula is shown to have severe shortcomings, especially in the range of low KG-values, where either negative or inconceivably large venting areas can be predicted. Due to these shortcomings a method has been developed using the efflux function for gases as a basis to predict the mass flow through a vent opening in a vessel during an internal explosion. The simulated rise in pressure due to the internal explosion is quantitatively determined from the KG-value, with the mass flow through the vent opening in the vessel resulting from the pressure difference between the vessel and its surroundings. This enables the maximum overpressure as a function of the pressure relief surface area to be predicted. The method takes into account the temperature of the efflux gases and turbulence enhancement brought about by the venting process. In the following paper explosion pressure relief experiments are described and the results from these experiments are compared to predictions from the efflux method. It is shown that by adjusting the assumed turbulence which evolves during the venting process, the reduced explosion pressure can be reasonably well reproduced. T2 - 15th International Symposium on Loss Prevention and Safety Promotion in the Process Industries and accompanying exhibition CY - Freiburg, Germany DA - 05.06.2016 KW - Deflagration KW - Explosion KW - Pressure relief KW - Venting KW - Efflux PY - 2016 SN - 978-88-95608-39-6 DO - https://doi.org/10.3303/CET1648082 SN - 2283-9216 VL - 48 SP - 487 EP - 492 PB - AIDIC Servizi S.r.l CY - Milano, Italy AN - OPUS4-37918 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gula, Michal A1 - Holtappels, Kai A1 - Schildberg, H.-P. T1 - Instabile Gase - Explosionstechnische Charakterisierung am Beispiel von Lachgas KW - Lachgas KW - Zerfall KW - Instabile Gase KW - Temperaturabhängigkeit KW - Explosion PY - 2007 DO - https://doi.org/10.1002/cite.200750139 SN - 0009-286X SN - 1522-2640 VL - 79 IS - 9 SP - 1435 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-16076 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Gula, Michal A1 - Steinbach, J. A1 - Holtappels, Kai A1 - Acikalin, Hatice Aydan A1 - Schildberg, H.-P. A1 - Kobiera, A. T1 - Apparative Einflüsse auf den explosionsartigen Zerfall von chemisch instabilen Gasen T2 - 10. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Deutschland DA - 2010-11-04 KW - Explosion KW - Chemisch instabil KW - Volumeneinfluss PY - 2010 SN - 978-3-89746-119-2 IS - P-16 SP - 1 EP - 9 CY - Frankfurt/M. AN - OPUS4-22540 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -