Media Releases


Montréal, July 5, 2006 - L-3 Communications MAPPS, a wholly owned subsidiary of L-3 Communications, announced today that it has entered into a technical cooperation agreement with Southern California Edison (SCE) for SCE's support in benchmarking and validating L3 MAPPS' new reactor core model for high-fidelity simulation of light water reactors (LWR). The new model, under development since last year, will be installed and validated on SCE's San Onofre Nuclear Generating Station (SONGS) simulator.

Given the availability of low-cost computing resources today, L3 MAPPS is currently finalizing the development of an enhanced LWR core model based on the Nodal Expansion Method (NEM), called COMET™ Plus and an associated software tool - Chorus™ Plus - for adapting the core model to any LWR nuclear core. With NEM, each node of the COMET Plus reactor core model will be represented by a fourth-order polynomial, providing a highly accurate representation of the flux in reactor cores. Chorus Plus will process any fuel data type regardless of the fuel manufacturer to generate the real-time reactor core model - COMET Plus. The new model will not require tuning if the input fuel data is accurate relative to the fuel design data.

Since the early 1990's, L3 MAPPS has employed the COMET™ reactor core model, based on the General Equivalence Theory, and core model generation and cycle-update utility Chorus™. COMET models are highly accurate; however, the initially generated models have required tuning through the use of graphical tools provided in Chorus. L3 MAPPS will continue to maintain and support COMET/Chorus as well to service the varying needs of power generation utilities.

L3 MAPPS has been engaged by SCE on numerous upgrade projects for the SONGS simulator since 1991, at which time the SONGS simulator was the first to take advantage of the company's ROSE® simulation environment, which is used for simulating all plant process systems except for the reactor. At the time, L3 MAPPS replaced the simulator's secondary system models. Today, the SONGS simulator is primarily based on L3 MAPPS technology.

"We appreciate SCE's pioneering spirit," said Steve Kantor, president and COO of L-3's Power & Control Systems Group. "SCE was the first to partner with us when we introduced ROSE in 1991, which has become the world's foremost modeling environment for power plant simulators. It is fitting that SCE has partnered with us again as we roll out the next generation of high-fidelity reactor core models."

"L3 MAPPS has been a reliable and dependable software supplier to SCE for 15 years," said Vincent Gagnon, simulator project manager for Southern California Edison. "The company's determination to succeed and to deliver first rate simulation products presents a win-win situation for both companies."

An Edison International company, Southern California Edison is one of the largest utilities in the U.S., serving central, coastal and Southern California. SONGS provides nearly 20 percent of the power to more than 15 million people in Southern California - enough power to serve 2.2 million households. The San Onofre Nuclear Generating Station is made up of two Combustion Engineering pressurized water reactor units with combined net output of 2,200 MWe. The SONGS simulator is used to provide operator training for both units.

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.



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