Invensys to Implement Triconex Safety Instrumented Systems at Petrobras Refineries; Triconex Triple Modular Redundant Technology to Be Used for Emergency Shutdown Applications in Cracker Units.

FOXBORO, Mass. -- Petroleo Brasileiro SA (Petrobras) has selected Invensys Process Systems to implement Triconex (www.triconex.com) TMR (triple modular redundant) technology for safety instrumented systems applications at the Duque de Caxias refinery in Rio de Janeiro state (REDUC) and the Paulinia refinery in Sao Paulo state (REPLAN) in Brazil.

The refineries, which are among the largest in the Petrobras system, will each employ multiple Tricon safety systems in their cracking units. The emergency shutdown systems are being installed as part of a refinery modernization program. The new systems are replacing existing relay panels, and were selected to simplify maintenance, and to provide increased asset availability, safety and efficiency.

Invensys Process Systems Brazil will also provide a wide range of services, including configuration, testing, commissioning, start-up and training. In addition, for the Paulinia refinery, Invensys is providing all basic and detailed engineering services throughout the safety systems project. The Invensys solutions were selected due to the reliability and inherent high availability of the Triconex TMR design, as well as extensive Invensys support dedicated to Petrobras.

The Triconex TMR technology employs three isolated, parallel control systems and extensive diagnostics integrated into one system. The system uses two-out-of-three voting to provide high-integrity, error-free, uninterrupted process operation. The TMR architecture eliminates any single point of failure and enables on-line maintenance, on-line programming downloads, self-calibration and fault localization.

About Petroleo Brasileiro SA (Petrobras)

Petrobras is a publicly listed company that operates on an integrated and specialized basis in many segments of the oil and gas industry - exploration and production; refining, marketing, transportation and petrochemicals; distribution of oil products; natural gas, and energy. Founded in 1953, Petrobras is the world's 15th largest oil company, according to Petroleum Intelligence Weekly. The leader in the Brazilian hydrocarbons sector, Petrobras has been expanding its operations to become an international energy company and a leader in Latin America. More information about Petrobras can be found at www.petrobras.com.

About Invensys Process Systems

Invensys Process Systems (www.invensys.com/ps), a business unit of Invensys plc, provides products, services and solutions for the automation and optimization of industrial process plants.

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

Invensys, Triconex, Foxboro, SimSci-Esscor, Wonderware and Avantis are trademarks of Invensys plc, its subsidiaries, or affiliates. All other brands and product names may be trademarks of their respective owners.