Engineering company Atkins has agreed to buy Nuclear Safety Associates, which specialises in nuclear safety, design engineering, and professional security services.Atkins said the acquisition is in line with its "strategy to be one of the world's leading energy consultancies, with the significant US nuclear market an area of focus for us". "Nuclear Safety Associates will both enhance the capability of the Group's energy business and provide NSA the opportunity to expand its well established project and client base in the US nuclear market," the company added.The transaction is subject to US government approvals.RD