Experimental investigations of LPG clouds dispersion were undertaken at Can Padró Security and Safety training site during 22nd-25th July of 2014. Eleven tests were performed, comprising a total amount of around 70 kg of propane emitted. The vapour clouds were intensively monitored to determine temperature and concentration evolution with time and space. 50 oxygen concentration gauges and 40 K-type thermocouples were deployed using masts at different locations within a 30 m-length 10 m-wide area at three different heights (0.1, 0.6 and 1.3 m). Figure 1 shows a photo of one of the trials undertaken, in which the release point, the cloud formed and the masts where the sensors were placed can be distinguished. It has to be said that some of the trials were designed to investigate the influence of an obstruction placed in the path of the vapour flow; thus, in some trials a 1.3 m- height 1 m-width fence was placed 10 m apart from the release point, centred at the sensors centerline.