[a] 1Introduction TNT known as 2,4,6-trinitrotoluene is one of the most commonly used explosives for military and industrial applications some decades of years past and present day.I ti s valued partly because of its insensitivity to shock and friction which reduces the risk of accidental detonation compared to other more sensitiveh igh explosivess uch as nitroglycerin. TNT melts at 80 8C [ 1,2] which is far below the temperature it wills pontaneously detonate allowing it to be poured and safely combined with other explosives [3]. TNT neither absorbs nor dissolvesi nw ater which allows it to be used effectively in wete nvironments. Additionally it is stable compared to other high explosives. With the fact that tons of TNT are produced each year,s torage is inevitable as they are not readily used [4].S torage of ammunitions over the years has seen several accidentsr ecorded in ammunition depots which are mainly due to human negligence. Someo fs uch accidents documented include Russia, Syria, Turkey and the most devastating happened in Congo [5,6].I na ll of these incidences, there were scoreso fd eath recorded accompanied by life threatening conditions. The bottom line for most of these explosions wasa saresult of some ammunition undergoing slow and fast cook-off due to poor storagec onditions [7].F or safety reasons, this phenomenonh as been investigatedb yu sing variousm ethods and popular amongst these included One Dimensional Time-to-Explosion (ODTX). There is however al imitation associated with experiment-related works when dealing with powerful explosives such as TNT in large volumes. In that regard numerical methods are the best tools to fill this gap. Some specialized codes which have beend evelopedt on umerically solve explosive related problems include TEPLO [8],H ERMEX [9] and REActive CONduction (REACON) [10]. In the case of REACON, a2 Dn umerical code was developed in order to simulate both fast and slow cook-off. Though the validationw as made using FLUENT results and literature values obtained,t he explosive involved as well as the geometry wasn'tt he same as the one in this study. However almost similarg raph profile was recorded where there was an indication of thermalr unaway.T he workd one by Hobbs [11] soughtt oi nvestigate the convection effects and the non-convection phenomena whichc ontribute to the detonationo fc onfined energetic material. COMSOL Multi-physics CFD tool was employed in the execution of the simulation work.I nt heir studies TNT was heated in ac onfined geometry where the convection effects and the Abstract:T he handling, storagea nd safety before deployment of explosivesa re major key issues that confront the ammunition industry.P recautions have to be taken not to cause premature detonationsa nd fatal accidents by studying their thermalb ehaviour.R esearch has been conducted to investigate the thermal stability of some secondary explosives such as RDX, HMX and TNT and their response to thermal stimuli. For the fact that real experimentw hich involves large amount of ex...