Atomic Energy of Canada Limited

About AECL

Executive Team

Nancy Chaput

Senior Director Human Resources

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As Senior Director Human Resources, Nancy has the strategic role in leading AECL’s Human Resources functions and HR oversight of CNL. As a key advisor to AECL’s President & CEO and the Executive Team she is the principal source of expertise on all human resources issues and risks. Her HR expertise comes to bear in the areas related to the full latitude of related legislation, regulations, and policies.

Originally joining AECL in 1987, Nancy brings extensive experience in human resources, project management and training to the position. She is a Certified Human Resources Leader (CHRL) with complementary education in business and adult learning. In 2012, she completed a Master’s Certificate in Organizational Development from York University.

Grant Gardiner

Vice-President, General Counsel,
Corporate Secretary

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As General Counsel, Grant represents AECL in all matters of law, legal policy and contract interpretation and management related to the functions of the corporation. This includes overseeing the performance of the legal compliance of CNL under its agreement with AECL, and monitoring legal developments, including legislation, of interest to AECL, CNL, and the Government of Canada.

Grant was admitted to the Ontario Bar in 1993 and has gained extensive experience leading publicly-traded companies through complex legal, governance and compliance landscapes. Most recently, in the role of General Counsel of Nordion, Grant led the company through a divestiture of its Target Therapies business and the sale of Nordion. Grant has previously served as Vice-President, Associate General Counsel, as well as Corporate Secretary, for BlackBerry, and has held leadership roles at other companies such as Cognos Inc. and JDS Uniphase. He holds a Bachelor of Business Administration from the University of Prince Edward Island and an L.L.B. from Osgoode Hall Law School.

David Hess

Lead Contracting Officer

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As Lead Contracting Officer, David (Dave) is responsible for overall day-to-day oversight of the performance of the Contractor and CNL in the management and operation of AECL’s Nuclear Laboratories. Dave works with the organization and subject matter experts to assess CNL’s performance in accordance with the annual Performance Evaluation Measure Plan, including ensuring all contract deliverables are timely, complete and satisfactory, and compliant with all terms and conditions, and make fee determinations as per the contract.

Dave brings over 20 years of experience in strategic contracting oversight and management through various senior positions with the United States Federal Government. Most recently, David headed up a Contracting Office for the Department of Energy’s Office of Environmental Management where he was responsible for the management and oversight of federal contracting staff that provided acquisition and contract management support to fifteen Department of Energy sites, encompassing the negotiation, award and management support of multi-billion dollar complex acquisitions for large-scale environmental management projects. Prior to that, David served as the Lead Contracting Officer for the National Nuclear Security Administration’s multi-billion dollar design, construction and operations contract for a nuclear fuel processing facility that converts excess weapons-grade plutonium into fuel for commercial nuclear reactors. David also served in various Lead Contracting Officer positions for the Naval Air Systems Command, during which time he supported the V-22 Osprey and Air Combat Electronics major weapon system programs. Dave holds a Bachelor of Science Degree in Finance from Northern Illinois University and is certified as a Level III Acquisition Professional.

Alastair MacDonald

Vice-President, Decommissioning
and Waste Management

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Alastair has over 30 years of experience in the nuclear industry and has worked at sites in the United States and United Kingdom. Most recently, he was responsible for a complex nuclear packaging and transport project at Dounreay, as part of his role with the United Kingdom’s Cavendish Nuclear Ltd.

As Vice President, Decommissioning and Waste Management, Alastair ensures that program and contract objectives are met with respect to CNL’s activities to manage AECL’s decommissioning and waste management responsibilities. Oversight areas include: facilities decommissioning, waste management and land remediation.

Garry Yaraskavitch

Acting Vice-President, Capital,
Operations and Security Oversight

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As the acting Vice-President, Capital Program, Operations & Security Oversight, Garry is responsible for the oversight of CNL activities related to the Capital Program and ensuring appropriate investment to support ongoing, sustainable nuclear science and technology development at the Chalk River Laboratories.

Since 2015, Garry has been the Senior Director of Operations, Infrastructure and Chief Security Officer at AECL, where he has had oversight responsibilities for the operational activities and infrastructure investments at the Chalk River Laboratories, along with the responsibility for the corporate security program. Prior to this, he was General Manager of Site and Nuclear Operations at the Chalk River Laboratories, where he was responsible for operations, maintenance, facilities management, and capital projects. 

Shannon Quinn

Vice-President, Science, Technology and
Commercial Oversight

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As Vice President, Science, Technology and Commercial Oversight, Shannon is responsible for overseeing the performance of CNL’s nuclear science and technology (S&T) projects and programs for the Government of Canada, as well as commercial S&T projects and programs for third-party customers. She also provides strategic support to ensure that federal objectives are met with respect to nuclear S&T capabilities, projects and performance.

Prior to joining AECL, Shannon was with Natural Resources Canada, and worked on various aspects of AECL restructuring, including the sale of the assets of the commercial division and the restructuring of the Nuclear Laboratories. She was also responsible for medical isotope policy and programming. Prior to 2009, Shannon was responsible for Canada’s Generation IV National Program. Before joining NRCan, Shannon held various technical and leadership positions in the steel industry, and was an adjunct professor at McMaster University. Shannon holds a Ph.D. in Chemical Engineering from Queen’s University and an MBA from the University of Ottawa.

Richard Sexton

President and Chief Executive Officer

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As President and CEO of AECL, Richard is leading the organization in its new oversight role, ensuring that the priorities of Government are delivered safely and efficiently under a Government-owned, Contractor-operated model.

Richard previously served as the Acting Chief Transition Officer and Vice-President, Decommissioning and Waste Management Oversight at AECL. In that capacity, he provided leadership as AECL transitioned to the Government-owned, Contractor-operated model and provided technical oversight to ensure that decommissioning and waste management products and services provided by CNL were delivered safely, and provided value for Canadians.

Richard has over 32 years of experience in decommissioning and waste management gained through leadership roles on some of the largest and most complex decommissioning projects in the world, including Magnox and Sellafield in the United Kingdom, and Rocky Flats and the Connecticut Yankee site in the United States. Most recently, Richard served as the Chief Operating Officer for the Magnox Reactor Accelerated Sites, where he was responsible for directing transformational change in decommissioning project strategy, delivery approach, cost, and schedule. Richard also has extensive experience in managing multiple stakeholder relationships. Richard holds an M.S. in Radiological Health Engineering from Northwestern University, a B.S. in Chemistry and American Board of Health Physics Certification, Part I. He has published and presented multiple papers on decommissioning and holds two patents for radiation detection equipment.

David Smith

Vice-President, Business
Operations, Chief Financial Officer

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As Vice President, Business Operations & CFO, David (Dave) is responsible for providing AECL with business support services, including financial systems and reporting, compliance monitoring and information technology. Dave is also responsible for the strategic leadership of financial management and business initiatives within AECL and financial oversight of the contract with Canadian Nuclear Laboratories (CNL).

Dave has served AECL for over 28 years in progressive positions in areas of finance and business operations. Prior to assuming his current role at AECL, Dave was the Corporate Controller for CNL, providing strong leadership and oversight of the financial management function. Dave holds a degree in Business Administration from the University of Western Ontario’s Richard Ivey School of Business and is a Chartered Accountant.

Graeme Williamson

Senior Director, Strategy, Business Planning,
and Government Relations

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As Senior Director Strategy, Business Planning and Government Relations, Graeme is responsible for AECL’s planning documents (Corporate Plan, Risk Management, Business Plan) and leads the oversight of the Contractor’s planning documents. These include the Long-Term Plans for the Canadian Nuclear Laboratories, as well as their Annual Program of Work and Budget, which is the key annual delegation of authority document. Graeme also oversees cross-functional initiatives from the contractor, such as the implementation of an Earned Value Management System. As the lead for AECL’s government relations program, Graeme is responsible for developing and maintaining relationships with the federal Government of Canada, Canadian Provincial governments and advancing collaboration and cooperation with international governments.

Prior to joining AECL, Graeme had 15 years’ experience with the Government of Canada, including its Central Agencies. Immediately prior to joining AECL, Graeme played a critical role in the restructuring of AECL at Natural Resources Canada, including both the divestiture of AECL’s commercial reactor division and the transformation of its nuclear laboratories from a government organization to a Government-owned, Contractor-operated (GoCo) model.