In addition to the shock overpressure, propellant fragments triggered by the pressure vessel explosion can cause global deformations or local damage to the process equipment . Therefore, a target equipment unit may be exposed to propellant fragments and fire thermal radiation simultaneously . Li et al. numerically investigated the coupling effects of the fragment impact and adjacent poolfire on a fixed-roof tank. Simulation results indicated that the pre-damaged tank caused by propellant fragments was easier to generate stress concentration, resulting in the significant attenuation of the fire resistance. The coupling effects of the fragment impact and adjacent pool fire were deeply different from those in which the fixed-roof tank was subjected to either fragment impact or adjacent pool-fire individually. On this basis, Chen et al. investigated the vulnerability of preheating storage tanks subjected to blast fragment impact load. Simulation results indicated that in the temperature range from 20℃ to 600℃, the failure probability of the tank increases (from 0.00675 to 0.0701) with the increase of the temperature of the tank wall.