Cameco Corporation Selects Foxboro Automation Systems For World-Scale Uranium Milling Operation |

Cameco Corporation Selects Foxboro Automation Systems For World-Scale Uranium Milling Operation

April 032006
Rabbit Lake processing mill controls upgrade to employ I/A Series system in phased implementation – third Cameco facility to select Foxboro

FOXBORO, MASSACHUSETTS, USA – April 3, 2006 – Cameco Corporation, the world’s leading uranium producer, has again selected Invensys Process Systems to implement a Foxboro automation system at one of the company’s northern Saskatchewan, Canada, facilities. A control system upgrade at the Rabbit Lake processing mill, the longest-operating uranium milling operation in Canada, will use I/A Series automation in the acid plant and powerhouse. These are the first implementations in a phased program that will next deploy Foxboro controls replacing outdated equipment for the remaining milling processes.

The Rabbit Lake mill currently processes uranium ore from a local ore body, Eagle Point. In the future, the mill will also process uranium originating from the Cigar Lake mine. The new Invensys automation system will replace legacy controls for the milling processes.

The implementation will include I/A Series Version 8 hardware and software, distributed field mounted control processors in fault-tolerant configuration, all running on the award-winning I/A Series high-speed mesh control network. The system will accommodate a variety of field I/O platforms, including HART combined analog input and output signals, and serial connections to third-party devices. The I/A Series system will also interface with Modicon PLC systems using Foxboro’s latest redundant field device system integrator modules.

The Invensys contract also covers a range of professional services, including configuration engineering assistance, start-up and commissioning field services and training.

The Foxboro mesh network process control system backbone utilizes advanced commercial communications technologies in robust industrial configurations. Providing high-availability, self-healing network performance, the mesh architecture can connect thousands of stations at data speeds up to one gigabit between network switches.

The Rabbit Lake automation project builds on Invensys presence at Cameco’s facilities in Saskatchewan. The company’s largest uranium operation, McArthur River Mine, has used extensive I/A Series automation since 1999. At Cigar Lake, Invensys is implementing a highly distributed control system for a new Cameco mine at the world’s largest undeveloped high-grade uranium deposit.

About Cameco Corporation
Cameco Corporation, headquartered in Saskatoon, Saskatchewan, is the world's largest uranium producer. The company's uranium products are used to generate electricity in nuclear energy plants around the world, providing one of the cleanest sources of energy available today. Cameco's shares trade on the Toronto and New York stock exchanges. More information on Cameco and the Rabit Lake Mine can be found at

About Invensys Process Systems
Invensys Process Systems (, a business unit of Invensys plc, is the world leader in industrial asset performance management. In addition to its rapidly expanding Global Solutions and Performance Management services groups, Invensys includes industry-leading brands such as Foxboro, Triconex, SimSci-Esscor, Wonderware, and Avantis, whose products are installed in more than 100,000 plants and other industrial operations across the world. These range from small hybrid and batch plants to the world’s largest upstream projects, refineries, gas plants, petrochemicals plants, power plants, and pulp and paper mills.

The Invensys Group ( is headquartered in London and is listed on the London Stock Exchange, with approximately 30,000 employees working in 60 countries.
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