DVP – Chesterfield
- Owner: Dominion Virginia Power
- Project: Limestone and Gypsum Handling Systems
- Location: Chesterfield Power Station, Chester, Virginia
- Scope: Engineering, Procurement, Construction, Startup and Commissioning
Project Background
Roberts & Schaefer Company was awarded a turnkey contract from Dominion Virginia Power for engineering, procurement, construction, start–up and commissioning of the limestone and gypsum handling systems at Dominion Virginia Power’s Chesterfield Power Station in Chester, Virginia. The system was successfully completed and in operation in 2008.
The limestone handling system is designed to receive limestone from 4,000–ton capacity barges with a rotary clamshell bucket crane. The material is unloaded and conveyed at 750 TPH to a transfer house and onto an 8,000–ton limestone storage building and discharged through a telescoping discharge chute. Limestone is reclaimed from the storage pile with three variable rate vibrating feeders and conveyed at 300 TPH to a transfer house and onto three storage silos (two current and one future) at the limestone preparation building.
The gypsum handling system is designed to receive gypsum from the process filters and convey it on a reversing conveyor at 300 TPH to either the gypsum storage building with a traveling discharge tripper or to the emergency discharge bunker. The tripper stockpiles 9,000 tons in the building. Gypsum is reclaimed from the storage building with a portal scraper reclaimer and conveyed at 600 TPH to a transfer house and onto a barge loadout conveyor equipped with a pivoting discharge chute. An emergency gypsum reclaim hopper fed by mobile equipment is located at the end of the storage building.