San Antonio, TX

The coal handling additions consist of two 54” conveyors, 14A and 14B, that divert coal from the existing transfer tower, T5, to the new transfer tower, T6. New discreet element modeling (DEM) controlled flow chutes with ceramic liner were integrated into existing chutes with diverter gates to load the conveyors. Then, the coal is transferred to two 54” tripper conveyors, 201 and 202, via flow controlled chutes that transfer the coal into six silos.

The conveyors and structural steel were galvanized with totally enclosed galleries. A new dust collector was added for the additional Unit 2 conveyors along with upgrades to the original Unit 1 dust collector. Additional items included nuclear level detectors and strain sensors for the coal silos, and methane detectors above the coal silos.

A 30” conveyor was added to the limestone handling system to transfer rock to a new storage bin. The conveyor has full length skirt boards and a bin vent for dust mitigation. The conveyor was supported from the building steel so as not to impose additional load on the storage bin.