In the last decade, the importance of risk analysis in the transport of dangerous goods has been evidenced by several studies showing that in some cases the risk associated with the transport of hazardous substances can be compared to those in chemical plants (processing units and storage). In this work the analysis of an accident in transport of dangerous goods is described. The objective of this study is to contribute to the determination of the causes that brought about the self-polymerization of commercial divinylbenzene (DVB 63%) contained in an isothermal-container, in order to prevent future occurrence of this type of accidents. Residence time and conditions during transport and storage of monomers, in particular the storage temperature, are very important factors that affect their self-polymerization aptitude. Concerning the cause of accidents it has been supposed that the quantity of oxygen in the tanker probably was insufficient to activate properly the inhibition mechanism to prevent the self-polymerization. According to this consideration the self-polymerization of DVB and the inhibition mechanism of 4-tert-Butylcatechol (TBC) have been studied as a function of temperature and monomer exposure to air with Differential Scanning Calorimetry and Adiabatic Calorimetry.
Post Investigation of an Incident due to the Self-Polymerisation of a Commercial Monomer
Casson V.;
2011
Abstract
In the last decade, the importance of risk analysis in the transport of dangerous goods has been evidenced by several studies showing that in some cases the risk associated with the transport of hazardous substances can be compared to those in chemical plants (processing units and storage). In this work the analysis of an accident in transport of dangerous goods is described. The objective of this study is to contribute to the determination of the causes that brought about the self-polymerization of commercial divinylbenzene (DVB 63%) contained in an isothermal-container, in order to prevent future occurrence of this type of accidents. Residence time and conditions during transport and storage of monomers, in particular the storage temperature, are very important factors that affect their self-polymerization aptitude. Concerning the cause of accidents it has been supposed that the quantity of oxygen in the tanker probably was insufficient to activate properly the inhibition mechanism to prevent the self-polymerization. According to this consideration the self-polymerization of DVB and the inhibition mechanism of 4-tert-Butylcatechol (TBC) have been studied as a function of temperature and monomer exposure to air with Differential Scanning Calorimetry and Adiabatic Calorimetry.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
