• CHRIS HEYSEL, P. ENG.
    DIRECTOR, NUCLEAR OPERATION & FACILITIES +

    Chris HeyselChris joined McMaster University as the Director of Nuclear Operations and Facilities in June 2001. As the Director of Nuclear Operations, Chris is responsibility for the safe and effective operation of McMaster University's Nuclear Facilities. Prior to coming to the University Chris spent 14 years at AECL’s Chalk River National Laboratory working at the 135 MW National Research Universal (NRU) research reactor. During his tenure with AECL, Chris held various operations roles at the reactor including Engineering Manager, Technical Section Head and Senior Reactor Shift Engineer. 

    Chris graduated with an Honour’s Degree in Chemical Engineering from Queens University in 1987.

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  • ROBERT PASUTA, P.ENG.
    MANAGER, REACTOR OPERATIONS +

    Rob

    As the Reactor Supervisor, Rob is responsible for all engineering changes at MNR, as well as overseeing routine maintenance on reactor infrastructure. He provides day to day supervision for Reactor Operations staff, and delivers practical and classroom training to incoming assistant reactor operators. Rob also oversees all work that is performed in MNR’s industrial hot cell, including gamma irradiations using a 10 kCi Cobalt-60 source.

    Rob has worked at MNR since 1998, and completed his B.Eng. at McMaster University.

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  • SUSAN JACK
    MANAGER, ACCOUNTING, ADMINISTRATION, AND IT +

    SUSANSusan joined McMaster Nuclear Reactor as the Manager, Accounting, Administration and IT in January 2003. In this role, Susan is responsible for all financial aspects of operations at MNR, as well as human resources, customer liaison and IT responsibilities within the organization.

    Previous roles for Susan have been in the private sector, both in profit and not-for-profit organizations, in various administrative and accounting functions.

    Susan is currently working towards a Management designation through McMaster University.

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  • DAVE TUCKER, CHP, MSc, RRPT, CRPA(R)
    SENIOR HEALTH PHYSICIST +

    DAVE2Dave joined McMaster University in 1998, and currently holds the position of Senior Health Physicist. In this capacity, Dave is responsible for the Health Physics Department at McMaster University, which oversees the university’s radiation safety program. Dave is an ex-officio member of the Health Physics Advisory Committee and Nuclear Facilities Control Committee and is a technical advisor to the Central Joint Health and Safety Committee. He chairs the MNR Emergency Preparedness Group and is the nuclear reactor’s Emergency Coordinator.

    Dave is an Adjunct Lecturer with the Medical Physics and Applied Radiation Sciences Department and teaches graduate and undergraduate health physics courses. He also teaches a graduate Health Physics course in the UNENE program for the Engineering Physics Department.

    Dave is a member and past president of the Canadian Radiation Protection Association (CRPA). He is currently the Vice-Chair of the National Registry of Radiation Protection Technologists (NRRPT) and is Chair of the NRRPT’s International Exam Committee. He is certified in the comprehensive practice of Health Physics by the American Board of Health Physics and holds CRPA and NRRPT Registration. Dave holds both B.Sc. (Applied Health and Radiation Physics) and M.Sc. (Medical Physics) degrees from McMaster University. Dave’s prior work experience includes several years as a Health Physicist and Section Head at AECL’s Chalk River Labs and a term as the Director of Risk Management for McMaster University.

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  • KARIN STEPHENSON, PhD
    MANAGER, COMMERCIAL OPERATIONS, NUCLEAR FACILITIES +

    KARIN2Karin joined MNR as the Manager, Commercial Operations in September, 2014. In this role, she is responsible for identifying and developing new business opportunities, as well as monitoring 

    emerging research and technology trends in the nuclear sciences that have relevance to MNR’s stakeholders. Karin also maintains all contracts involving the diverse nuclear facilities at McMaster University, and strives to maintain positive relationships with MNR’s customers.

    Karin has an extensive background in radiochemistry and radiopharmaceuticals research, with a focus on the design and development of molecular imaging agents for oncology and neurology. She has held various roles in the private sector, including Director of Discovery at a molecular imaging company. Karin completed her PhD in Chemistry at McMaster University in 2005.

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  • BRANDON JOHNSTON, ASQ CQA
    MANAGER, OPERATIONS QUALITY MANAGEMENT & TRAINING +

    BRANDON2Brandon joined McMaster Nuclear Reactor as the Manager, Operations Quality Management and Training in April 2011. In this role, Brandon is responsible for the Quality Management System and for the development of training programs at the Nuclear Reactor.

    Previous roles for Brandon have been in the private sector managing and implementing successful Quality Systems for companies in the medical devices industry, and working extensively with various regulatory agencies in Canada and Internationally.

    Brandon graduated with an Honour’s Degree in Biochemistry from McMaster University in 2000. Brandon also holds the designation of Certified Quality Auditor issued by the American Society for Quality.

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  • ALICE PIDRUCZNY
    MANAGER, LABORATORY SERVICES +

    ALICEAlice manages the Neutron Activation Analysis (NAA) facilities at MNR, as well as our analytical laboratories. In this role, she is responsible for overseeing the safe and effective operation of MNR’s short-lived, prompt gamma, and delayed neutron counting activation systems and associated detectors. Alice provides quality control for MNR’s products, including the medical isotope Iodine-125; she also works with local researchers to develop customized experimental protocols that meet their particular needs.

    Alice has held several different positions within the MNR organization, and in the private sector. Her areas of expertise include NAA, radioisotope development and production, pharmaceuticals, and quality assurance. Alice received her B.Sc. in Chemistry from Queens University.

  • JOHN AVELAR
    MANAGER, TECHNICAL SERVICES +

    JOHNJohn manages the Technical Services group, which provides a variety of essential services to various departments at MNR, including the NAA facilities, analytical laboratories, and the Iodine-125 production team. His responsibilities include the design, fabrication, testing, and commissioning of highly specialized and sophisticated equipment that enables MNR to maintain high safety, regulatory, and quality standards. John also provides support for other academic departments at McMaster University, including consultations, design and fabrication of customized laboratory devices, and maintenance & repair of laboratory equipment.

    John’s areas of expertise include CAD software, data acquisition systems (hardware & software), electronics, mechanics, fluid/pneumatic systems, ventilation and filtration, high vacuum systems, orbital welding, and helium leak testing. He has worked at MNR since 1986.

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  • ANDREA ARMSTRONG, PhD
    RESEARCH SCIENTIST, RADIOISOTOPE DEVELOPMENT +

    In her role as Research Scientist, Andrea is responsible for identifying radioisotopes that are amenable to production at MNR and developing methodologies to isolate, characterize, and qualify them for dispensing as either Medical- or Research-grade Isotopes. Since she joined MNR in 2009, our Radioisotope Development laboratories have produced radioisotopes and custom radiotracers for a wide range of applications, including automotive and pipeline engineering, environmental and life sciences, and radiopharmaceutical research.

    An inorganic chemist with experience in Main Group, bioinorganic, transition metal, and radiopharmaceutical chemistry, Andrea received her PhD from the University of Calgary in 2005.

  • BRAD TRUSHINSKI
    MANAGER OF IODINE OPERATIONS +

    Brad joined MNR as the Isotope Production Manager in July 2000. As the Isotope Production Manager, Brad is responsible for the safe and efficient production of commercial isotopes, including Iodine-125.

    Prior to this, Brad spent several years in the Reactor Control Room as an Assistant Reactor Operator and also worked in the Departments of Chemistry and Chemical Engineering at McMaster University.

    Brad graduated with a Bachelor’s Degree in Chemistry from McMaster University in 1987.

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