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. Find a) The ignition sensitivity and B) explosion severity