Press Release

HOUSTON - July 2, 2018 - KBR, Inc. (NYSE: KBR) announced today that it has been awarded a contract to supply its proprietary SCORE™ Ethylene Technology to GS Caltex Corporation for a grassroots mixed feed cracker (MFC) for its project in Yeosu, South Korea.

Under the terms of the contract, KBR will provide its innovative Selective Cracking Optimum Recovery (SCORE™) technology license and basic engineering design services for a 700 KTA ethylene mixed feed cracker to be built by GS Caltex, a company owned by GS Energy and U.S. based Chevron Corp. The new plant will use naphtha, liquefied petroleum gas and refinery off-gases as its main feedstocks. It will be constructed in the South Korean southern city of Yeosu where GS Caltex's 790,000 barrels-per-day refinery is located. The project will use KBR's highly selective SC-1 furnaces for the highest yield and flexibility.

"We are honored to be selected as the licensor for GS Caltex's first ethylene plant," said John Derbyshire, KBR President, Technology. "SCORE™ technology is highly flexible and enables producers to maximize profitability through superior yield, energy, and operational performance."

KBR has been a leader in olefin plant design, construction and technology development for more than 50 years. Since 1990 over 20 new ethylene plants with a combined capacity of 13 million metric tons per year have been brought on-stream using KBR's cost-effective cracking technologies and flexible plant designs to produce ethylene, propylene and other byproducts from a variety of feedstocks.

About KBR, Inc.

KBR is a global provider of differentiated professional services and technologies across the asset and program life cycle within the Government Services and Hydrocarbons sectors. KBR employs approximately 34,000 people worldwide (including our joint ventures), with customers in more than 75 countries, and operations in 40 countries, across three synergistic global businesses:

Government Services, serving government customers globally, including capabilities that cover the full life-cycle of defense, space, aviation and other government programs and missions from research and development, through systems engineering, test and evaluation, program management, to operations, maintenance, and field logistics; Technology, including proprietary technology focused on the monetization of hydrocarbons (especially natural gas and natural gas liquids) in ethylene and petrochemicals; ammonia, nitric acid and fertilizers; oil refining and gasification; Hydrocarbons Services, including onshore oil and gas; LNG (liquefaction and regasification)/GTL; oil refining; petrochemicals; chemicals; fertilizers; differentiated EPC; maintenance services (Brown & Root Industrial Services); offshore oil and gas (shallow-water, deep-water, subsea); floating solutions (FPU, FPSO, FLNG & FSRU); program management and consulting services.

KBR is proud to work with its customers across the globe to provide technology, value-added services, integrated EPC delivery and long term operations and maintenance services to ensure consistent delivery with predictable results. At KBR, We Deliver.

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Forward Looking Statement

The statements in this press release that are not historical statements, including statements regarding future financial performance, are forward-looking statements within the meaning of the federal securities laws. These statements are subject to numerous risks and uncertainties, many of which are beyond the company's control that could cause actual results to differ materially from the results expressed or implied by the statements. These risks and uncertainties include, but are not limited to: the outcome of and the publicity surrounding audits and investigations by domestic and foreign government agencies and legislative bodies; potential adverse proceedings by such agencies and potential adverse results and consequences from such proceedings; the scope and enforceability of the company's indemnities from its former parent; changes in capital spending by the company's customers; the company's ability to obtain contracts from existing and new customers and perform under those contracts; structural changes in the industries in which the company operates; escalating costs associated with and the performance of fixed-fee projects and the company's ability to control its cost under its contracts; claims negotiations and contract disputes with the company's customers; changes in the demand for or price of oil and/or natural gas; protection of intellectual property rights; compliance with environmental laws; changes in government regulations and regulatory requirements; compliance with laws related to income taxes; unsettled political conditions, war and the effects of terrorism; foreign operations and foreign exchange rates and controls; the development and installation of financial systems; increased competition for employees; the ability to successfully complete and integrate acquisitions; and operations of joint ventures, including joint ventures that are not controlled by the company.

KBR's most recently filed Annual Report on Form 10-K, any subsequent Form 10-Qs and 8-Ks, and other U.S. Securities and Exchange Commission filings discuss some of the important risk factors that KBR has identified that may affect the business, results of operations and financial condition. Except as required by law, KBR undertakes no obligation to revise or update publicly any forward-looking statements for any reason.

For further information, please contact:

Investors
Nelson Rowe
Senior Vice President, Investor Relations
713-753-5082
Investors@kbr.com

Media
Brenna Hapes
External Global Communications
713-753-3800
Mediarelations@kbr.com