TVA – Widows Creek Plant
- Owner: Tennessee Valley Authority
- Project: Coal Handling System Upgrade
- Location: Kingston Fossil Plant, Kingston, Tennessee
- Scope: Engineering, Procurement, Construction, Startup and Commissioning
Project Background
Roberts & Schaefer Company was awarded a turnkey contract from TVA for engineering, procurement, construction, start-up and commissioning of the coal handling system upgrade for blending at TVA’s Willows Creek Fossil Plant in Stevenson, Alabama. The system upgrade was successfully completed and in operation in 2005.
The coal handling system receives coal by train, and it is unloaded at a bottom dump system. The conveyor system through stockout was upgraded to increase the unloading capacity from 1,400 to 2,200 TPH since western PRB coal is being received for coal blending. The conveyor system was upgraded with 35–degree idlers, new drives, and conveyor components. Transfer conveyors to/from the existing crusher building to a new crusher house were included. The new crusher house included a diverter gate for crusher by–pass, a 2,200 TPH crusher, and a proportioning gate. The proportioning gate sent 1,400 TPH of coal back to the existing crusher building or 2,200 TPH to stockout.
For stockout and blending a short fixed stockout conveyor was replaced with a 2,200 tph capacity pedestal radial stacker. The radial stacker forms two segregated piles, a low sulfur pile with a capacity of 21,500 tons and a high sulfur pile with a capacity of 19,200 tons. The coal is reclaimed with the existing reclaim system.