BREA, Calif., March 8 -- Simulation Sciences Inc. (SIMSCI), a
worldwide leader of advanced process control, optimization and simulation
solutions to the global process industries, today announced that it has been
awarded two real-time optimization projects with Chevron at one of its
refineries.  Chevron will utilize ROMeo, SIMSCI's Windows NT based software
for on-line optimization, to directly replace their existing on-line, closed
loop system on two of the processing units at its El Segundo Refinery.
    Chevron based its selection of ROMeo on four categories: product features
and architecture; product supportability and implementation; technology
supplier capability; and maintenance and implementation cost factors.
    "This project award solidifies SIMSCI's position as a global optimization
leader," said Brian Ahern, president of SIMSCI.  "ROMeo has quickly become the
real time optimization technology of choice, with many on-line systems
commissioned and under implementation within some of the largest refining and
petrochemical companies in the world."
    Bob Cuneo, technical manager at the Chevron El Segundo Refinery, said, "We
believe ROMeo's optimization capabilities, architecture and end-user
friendliness will provide maximum and sustainable benefits for Chevron.  This
product represents a real technological advancement in real-time optimization
technology."

    About ROMeo
    ROMeo, SIMSCI's Rigorous On-line Modeling with Equation Based Optimization
software is designed to enable plant engineers and management to model process
units and optimize operations on a plant-wide basis.  The system uses a
combination of real-time plant data and current economic objectives to
precisely replicate plant operations.  Based on a rigorous model of the
operating facility, the system calculates optimal process set points for the
plant's control system.  It also helps determine the location and cause of
operating constraints and problems.  Unlike older optimization technology,
ROMeo uses one model for process simulation, data reconciliation and
optimization.  This one model concept and state-of-the-art graphical
plug-and-play environment minimizes build, implementation and maintenance
costs.

    About SIMSCI
    SIMSCI, an Invensys company, is a worldwide supplier of commercial
simulation and optimization software and related services to the petroleum,
petrochemical and industrial chemical process industries as well as to
engineering and construction firms.  SIMSCI's products are designed to
increase profitability by reducing capital investment costs, improving yields
and enhancing management decision making.  SIMSCI maintains offices in Brazil,
Germany, Italy, Japan, Singapore, the United Arab Emirates, the United
Kingdom, the United States and Venezuela and provides support and services to
more than 750 customers in over 70 countries.  For more information about
SIMSCI, visit the SIMSCI Web site at http://www.simsci.com.

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