Atkins has bought Nuclear Safety Associates, an engineering and technical services firm based in Charlotte, North Carolina.
NSA employs 130 people and works in nuclear safety, design engineering, and professional security services.
Dr Uwe Krueger, Atkins’ chief executive, said the acquisition was “another step towards our strategy to be one of the world’s leading energy consultancies”.
Atkins said the combined firms would offer a comprehensive range of architect engineer and owner engineer services, which would offer traditional engineering and design skills with niche specialist nuclear analytical and safety skills.
It added the acquisition would help Atkins to expand in the US nuclear commercial (operation of existing stations, new build and power upgrades) and government (ongoing activity at national laboratories and decommissioning of the legacy defence sites) markets.
Chris Ball added: “Atkins’ nuclear business is also supporting countries that are building nuclear for the first time, and those countries are establishing US-style regulatory regimes. NSA’s expertise in the US Nuclear Regulatory Commission (NRC) regulatory environment will be of great value in delivering these projects.”