Gearbox Stocking Program Gets Barge Conveyor Up and Running
- Published: Monday, 11 February 2013 15:11
Pendant lines are used to support the boom on draglines and electric shovels. Due to the type of work, which is highly repetitive, these pendant lines are submitted to a large number of tension/load cycles that influence service life. Traditionally the pendant lines are made of steel wire rope. Steel wire rope has a limited service life when submitted to repetitive tension-tension fatigue cycles. Oftentimes, the pendant lines are replaced too soon. Conversely frequent inspections cause unnecessary maintenance downtime. The hourly loss of revenue resulting from pendant life failure or unplanned maintenance are considerable.
Located in Campbell County, Wyo., Peabody Energy’s North Antelope Rochelle mine (NARM) covers 46,000 permitted acres and produces more than 100 million tons per year. The mine consists of more than 400 compliance features, including pond structures, topsoil stockpiles, culverts, alternate sediment control measures, ground water monitoring wells and surface monitoring stations. Approximately 6,000 acres have been reclaimed, of which 4,800 acres have been approved for Phase I bond release under Wyoming’s regulatory program.