Minera San Cristobal - Bolivia
Connecting corporate and control systems using OPC DataHub
Minera San Cristobal, owned by Apex Silver and Sumitomo Corporation, is one of the largest silver-zinc-lead mining projects in the world. The mine, located in the Potosi district of southwestern Bolivia, was opened in 2007, and is expected to produce approximately 450 million ounces of silver, 8 billion pounds of zinc, and 3 billion pounds of lead.
In the San Cristobal mill the ore extracted from the mine is crushed, ground, and refined through flotation process to yield concentrates of silver, zinc, and lead, which are then shipped abroad for final smelting. These processes are monitored and controlled using the DeltaV Professional Plus SCADA system.
When the system was first installed, managers at the San Cristobal mill initiated a project called "DeltaV External Historian". The goal of the project was to store vital process data in a SQL Server database, for these three reasons:
- To maintain an external backup of the most important process data out of the process control servers (more than 3600 points).
- To provide access to the plant information from the corporate network, while avoiding the risk of having office personnel connected to the control network.
- To interface with corporate ERP systems like JD Edwards.