SYKESVILLE, Md. –
GSE Systems, Inc. (GSE or the Company) (NYSE American: GVP), the
world leader in real-time high-fidelity simulation systems and
training/consulting solutions to the power and process industries, today
announced that its latest simulation platform, OpenSim™ 7.0, is being
implemented as a fleet solution across all nuclear plant sites for an
existing client operating in the southern United States.

Standardizing on the new platform will enable the utility to optimize
future simulation engineering work across its fleet of plants and more
easily integrate future digital systems.

GSE’s latest enhancements in OpenSim 7.0 leverage GSE’s common
simulation engine that serves as the backbone of many nuclear power
plant training simulators in use today in the United States and
internationally.

The GSE platform provides out-of-the-box support for:

• Connectivity: OPC¹ and third party Distributed Control
  Systems (DCS)
• Engineering Simulation: GSE’s high-definition executive (HDX
  client/server) simulation engine supports advanced simulation codes
  such as Idaho National Laboratory’s (INL) RELAP5-3D and the Electric
  Power Research Institute’s (EPRI) MAAP
• Performance Monitoring: advanced monitoring and trending package via
  JDashboard™

The new configuration for OpenSim 7.0’s kernel supports OPC¹
data transfer connectivity and HDX client integration. When clients add
a new DCS, the communication protocols are already built into the
OpenSim 7.0 simulation engine – which allows a simple configuration to
get the system up and running.

The addition of HDX client and server routines enables OpenSim 7.0 to
connect easily with advanced codes such as GSE’s RELAP5-HD®, EPRI’s MAAP
(via GSE’s PSA-HD™, DesignEP®), Studsvik’s Simulate-3 Real-time code
(S3R) and others.

JDashboard is a GSE tool for advanced monitoring and trending. In
addition to monitoring simulator variables, JDashboard can evaluate
user-defined expressions during runtime. The tool also offers more
control over modules to help speed up debugging by allowing simulation
engineers to control module execution in a variety of ways during run
time. Finally, enhanced functionality enables real-time performance and
CPU load balancing, which is especially important for monitoring and
reporting on advanced engineering codes.

Bahram Meyssami, GSE’s Chief Technology Officer said, “The OpenSim 7.0
simulation engine is a leap forward for OpenSim installations, allowing
customers to take advantage of GSE’s technology innovation to easily
integrate third party systems and advanced (industry-accepted) codes.
With such integration capabilities, customers can increase the fidelity
of their existing training simulator and expand their use of our
technology to leverage the nuclear plant simulator asset for engineering
purposes, beyond the traditional training use. GSE continues to develop
and unify several of our key existing technology innovations across our
product portfolio to benefit all of our installed user base and future
customers.”

TRADEMARKS

OpenSim™, JDashboard™, RELAP5-HD®, PSA-HD™, and DesignEP® are trademarks
of GSE Systems, Inc. All other trademarks are the property of their
respective owners, and GSE makes no claim to such marks or the products
to which they pertain.

ABOUT GSE SYSTEMS, INC.

GSE Systems, Inc. is a world leader in real-time high-fidelity
simulation, providing a wide range of simulation, training and
engineering solutions to the power and process industries. Its
comprehensive and modular solutions help customers achieve performance
excellence in design, training and operations. GSE’s products and
services are tailored to meet specific client requirements such as
scope, budget and timeline. The Company has over four decades of
experience, more than 1,100 installations, and hundreds of customers in
over 50 countries spanning the globe. GSE Systems is headquartered in
Sykesville (Baltimore), Maryland, with offices in Huntsville, Alabama;
Navarre, Florida; Chennai, India; Nyköping, Sweden; Stockton-on-Tees,
UK; and Beijing, China. Information about GSE Systems is available at www.gses.com.

ABOUT EPRI

EPRI (www.epri.com)
conducts research and development relating to the generation, delivery
and use of electricity for the benefit of the public. An independent,
nonprofit organization, EPRI brings together its scientists and
engineers as well as experts from academia and industry to help address
challenges in electricity, including reliability, efficiency, health,
safety and the environment. EPRI does not endorse any third party
products or services. Interested vendors may contact EPRI for a license
to MAAP5.

FORWARD LOOKING STATEMENTS

We make statements in this press release that are considered
forward-looking statements within the meaning of Section 27A of the
Securities Act of 1933, as amended, and Section 21E of the Securities
Exchange Act of 1934. These statements reflect our current expectations
concerning future events and results. We use words such as “expect,”
“intend,” “believe,” “may,” “will,” “should,” “could,” “anticipates,”
and similar expressions to identify forward-looking statements, but
their absence does not mean a statement is not forward-looking. These
statements are not guarantees of our future performance and are subject
to risks, uncertainties, and other important factors that could cause
our actual performance or achievements to be materially different from
those we project. For a full discussion of these risks, uncertainties,
and factors, we encourage you to read our documents on file with the
Securities and Exchange Commission, including those set forth in our
periodic reports under the forward-looking statements and risk factors
sections. We do not intend to update or revise any forward-looking
statements, whether as a result of new information, future events, or
otherwise.

¹ OPC, an industry standard communication protocol, is widely
used for DCS and other external system communications.

View source version on businesswire.com: http://www.businesswire.com/news/home/20171127005987/en/

Company Contact
GSE Systems, Inc.
Chris Sorrells,
410-970-7802
Chief Operating Officer
or
The Equity
Group Inc.
Kalle Ahl, CFA, 212-836-9614
kahl@equityny.com
or
Devin
Sullivan, 212-836-9608
dsullivan@equityny.com