Evaluate the potential for an explosion of a powder cloud with an ignition temperature of 480 ^oC, considering the following factors: the ignition temperature of a layer of the powder is 400 ^oC, the minimum ignition energy required for the powder cloud is 0.055 joules, the minimum concentration of the powder required for combustion is 0.12 oz/ft³, the maximum explosion pressure for the powder is 113 psig, and the maximum rate of pressure rise in the testing equipment for the powder is 5,500 psi/sec.