Project Overview

Project: Coal Segregation Project

Client: Dominion Power

Job Site: Chesterfield Power Station
Chester, Virginia

Scope of Work: Turnkey Design, Engineering, Procurement, and Construction

Project Description:
EDC was awarded an EPC contract to design, engineer, procure, and install a coal yard upgrade system that allowed for the stockpiling of coal into segregated low and high sulfur piles.
Modification of the existing stockpiling conveyor system allowed coal to be directed to one of two radial stackers at 1400 TPH depending on the sulfur content of the coal.  One stacker was designated for the high sulfur coal pile and the other one for the low sulfur coal pile.  A nuclear analyzer, belt scale, and sampling system were integrated into an existing conveyor on the stockpile line so that coal being unloaded from a railcar could be weighed, sampled, analyzed for sulfur content, and then directed to the appropriate radial stacker.

A new chain reclaim feeder and conveyor were installed to reclaim low sulfur coal at up to 1200 TPH.  This conveyor empties onto an existing reversible conveyor that was upgraded from 400 to 1200 TPH so that coal can be directed onto either of the plant’s 2 reclaim conveyor lines – the 400 TPH line or the 1200 TPH line at the appropriate tonnage.  Reclaim of high sulfur coal was attained via an existing reclaim system which was modified so that high sulfur coal could be directed to either reclaim conveyor line.  Both reclaim conveyor lines were modified to accept nuclear analyzers so that the sulfur content of reclaimed coal could be determined.