Mark Lesinski

President & Chief Executive Officer
Canadian Nuclear Laboratories Ltd.

Mark Lesinski was appointed President and Chief Executive Officer of Canadian Nuclear Laboratories Limited (CNL) effective September 13, 2015. CNL is Canada’s premier nuclear science and technology laboratory managed by the Canadian National Energy Alliance (CNEA).

Mr. Lesinski has a distinguished career in nuclear science, operations, projects, and decommissioning. His 38 years of experience spans commercial and government nuclear facilities, from power reactor operations and major retrofit projects to management of decontamination and decommissioning (D&D).

Prior to joining CNL, Mr. Lesinski spent 10 years in the UK, first to accelerate closure of the Magnox South estate culminating as the Managing Director and then to serve as chief operating officer (COO) for the UK Nuclear Decommissioning Authority (NDA), developing and implementing strategy for the site licence companies (SLC). The unique combination of project and program management with site operating company (SOC) management and governance roles, as well as coordinating support with the National Nuclear Laboratory, provides Mr. Lesinski with the perspective and experience critical to leading CNL’s transformation.

In addition, Mr. Lesinski’s experience includes 17 years of successful hands‐on management of major commercial nuclear power plant retrofits, followed by 6 years of D&D at commercial reactor and U.S. Department of Energy (DOE) sites including the Rocky Flats Environmental Technology site. At Rocky Flats, his innovative safety and regulatory approaches and use of high‐ performance teams supported site closure 60 years earlier and US$30 billion lower than the original estimate.

A native of Rochester, New York, Mr. Lesinski obtained a Bachelor’s degree in Biology (Cum Laude) as well as post‐graduate studies in radiation science from the University at Buffalo. He has also co‐authored numerous publications and presented at various conferences in the nuclear sector.

He brings private‐sector rigour and efficiency to transform CNL.