title: Investigation of an accident in a resins manufacturing site: the role of accelerator on polymerisation of methyl methacrylate.
abstract: This paper analyzes the effect of an accelerator on the polymerisation of methyl methacrylate (MMA). This study is based on the results of an investigation of an accident in a manufacturing site for resins located in the United Kingdom. As sequence of event to cause the accident the following was assumed: during an unattended batch process a runaway undesired polymerisation of methyl methacrylate occurred, generating rapid vaporisation of monomer, which in contact with an ignition source, led to an explosion followed by a fire. Since no initiator for the polymerisation reaction had been jet added to the blend, it was supposed that the accelerator contributed to the onset of the undesired polymerisation. The accelerator involved in the accident t has therefore been tested by differential scanning calorimetry and adiabatic calorimetry. The experimental data allowed the authors to prove the hypothesis made and to define safety ranges for the polymerisation reaction.
authors: Alma Mater Studiorum-Università di Bologna, Dipartimento di Ingegneria Chimica, Mineraria e delle Tecnologie Ambientali, Bologna, Italy; Dipartimento di Ingegneria Industriale, Via Marzolo 9, 35131 Padova, Italy. Electronic address: valeria.casson.moreno@gmail.com.
authors: Valeria
authors: V
authors: Casson
authors: Health & Safety Laboratory, Harpur Hill, Buxton, Derbyshire SK 179 JN, United Kingdom. Electronic address: Tim.Snee@hsl.gsi.gov.uk.
authors: Tim
authors: T
authors: Snee
authors: Dipartimento di Ingegneria Industriale, Via Marzolo 9, 35131 Padova, Italy. Electronic address: giuseppe.maschio@unipd.it.
authors: Giuseppe
authors: G
authors: Maschio
mesh_terms: D002151:Calorimetry; D055884:Chemical Hazard Release; D005107:Explosions; D005390:Fires; D020366:Methylmethacrylate / Q000737:chemistry*; D058105:Polymerization; D014052:Toluidines / Q000737:chemistry*; D006113:United Kingdom
chemical_list: D014052:Toluidines; D020366:Methylmethacrylate
keywords: Accident; Calorimetry; Investigation; Methyl methacrylate; Polymerisation; Runaway