Media Releases


Montréal, October 10, 2006 - L-3 Communications MAPPS, a wholly owned subsidiary of L-3 Communications, announced today that it has won an order from Ontario Power Generation (OPG) - Canada's largest nuclear plant operator - to replace the Digital Control Computer (DCC) central processing units (CPUs) at the Darlington Nuclear Generating Station. DCC systems are used to monitor and control the major reactor and power plant functions at CANDU* nuclear power plants.

To guarantee the long-term operational security of Darlington, L3 MAPPS and its principal subcontractor, Massachusetts-based Quickware Engineering & Design, will refine existing equipment to emulate and ultimately replace the current computers that control key process systems at Darlington. Through the deal, existing computer emulation technology will be redesigned to allow for component upgrades and other improvements. Once OPG requirements have been satisfied, OPG can exercise an option for L3 MAPPS to integrate the newly designed computer into the current DCC systems at Darlington's four generating units.

L3 MAPPS has been supplying most major components for DCCs since 1970, including the provision of the Darlington DCC input/output system in the late 1980's. The Darlington DCC computer replacement project together with the Varian DCC replacement initiative currently underway with the CANDU Owners Group provide L3 MAPPS with design control over the entire range of DCC equipment. For DCC applications, the Varian computers are widely used in CANDU plants worldwide, whereas the computers at Darlington are unique.

"We are delighted to augment our role in this market segment and to once again work with OPG - the flagship CANDU operator," said Michael Chatlani, vice president, marketing & sales, L3 MAPPS Power Systems and Simulation. "L3 MAPPS has demonstrated its commitment to supporting CANDU operators with its DCC systems and looks forward to playing its part in ensuring CANDU's continued viability for many years to come."

Ontario Power Generation Inc. is an Ontario-based electricity generation company whose principal business is the generation and sale of electricity in Ontario. As of December 31, 2005, OPG's electricity-generating portfolio had a total in-service capacity of 22,173 megawatts (MW). In 2005, OPG generated 108.5 terawatt-hours (TWh) of electricity. Of OPG's generation assets, Darlington Nuclear Generating Station is the company's newest CANDU nuclear generating station. It is a 4-unit station with a total output of 3,524 megawatts (MW), providing about 20 percent of Ontario's electricity needs. Darlington is located in the Municipality of Clarington in Durham Region, 70 km east of Toronto.

L3 MAPPS has over 20 years of experience in pioneering technological advances in the marine automation field and over 30 years of experience in delivering high-fidelity power plant simulation to leading utilities worldwide. In addition, the company has more than three decades of expertise in supplying plant computer systems for Canadian heavy water reactors. L3 MAPPS also provides targeted controls and simulation solutions to the space sector.

To learn more about L3 MAPPS, please visit the company’s web site at

Headquartered in New York City, L-3 Communications is a leading provider of Intelligence, Surveillance and Reconnaissance (ISR) systems, secure communications systems, aircraft modernization, training and government services. The company is a leading merchant supplier of a broad array of high technology products, including guidance and navigation, sensors, scanners, fuzes, data links, propulsion systems, simulators, avionics, electro optics, satellite communications, electrical power equipment, encryption, signal intelligence, antennas and microwave components. L-3 also supports a variety of Homeland Security initiatives with products and services. Its customers include the Department of Defense, Department of Homeland Security, selected U.S. Government intelligence agencies and aerospace prime contractors.

To learn more about L-3 Communications, please visit the company’s web site at

Safe Harbor Statement Under the Private Securities Litigation Reform Act of 1995

Except for historical information contained herein, the matters set forth in this news release are forward-looking statements. Statements that are predictive in nature, that depend upon or refer to events or conditions or that include words such as “expects,” “anticipates,” “intends,” “plans,” “believes,” “estimates,” “will,” “could” and similar expressions are forward-looking statements. The forward-looking statements set forth above involve a number of risks and uncertainties that could cause actual results to differ materially from any such statement, including the risks and uncertainties discussed in the company's Safe Harbor Compliance Statement for Forward-Looking Statements included in the company's recent filings, including Forms 10-K and 10-Q, with the Securities and Exchange Commission. The forward-looking statements speak only as of the date made, and the company undertakes no obligation to update these forward-looking statements.

* CANDU is an acronym for CANada Deuterium Uranium and is a registered trademark of Atomic Energy of Canada Ltd. The CANDU system is a design that uses deuterium oxide (heavy water) as the moderator and coolant, and natural uranium as fuel.

Darlington Nuclear Generating Station
Darlington Nuclear Generating Station



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