Coal System

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Raw coal is brought into the plant and unloaded into large storage piles. A coal crusher reduces pieces in size, then feeds into a silo that stores 8 to 12 hours of supply. Pulverizers then reduce the pieces to dust, mix it with primary air and send it to the boiler burners. Catastrophic accidents at power plants typically involve highly volatile coal dust, so explosion proof instrumentation is required in this area.