McMaster Nuclear Research Reactor
McMaster University owns and is licensed to operate the Nuclear Research Reactor, located in Hamilton, ON. The CNSC has full-time, dedicated staff who periodically perform inspections to evaluate operations and to verify compliance with regulatory requirements and licence conditions.
- Facility information
- Latest CNSC facility-specific announcements
- Disclosure protocol
- Regulatory reporting
- Other key topics
Facility information

View of McMaster’s Nuclear Research Reactor
Location: Hamilton, ON
Licensee: McMaster University
Status: Operating
Type of reactor: Pool
Licence issued: July 1, 2014
Licence expires: June 30, 2024
Start of commercial operation: 1959
The reactor is used for a variety of purposes including research and education, commercial applications such as neutron radiography, and medical radioisotope production. The MNR is an important producer of Iodine-125, used in cancer therapy.
McMaster Nuclear Reactor website
Latest CNSC facility-specific announcements
June 27, 2014: McMaster University's nuclear reactor licence renewed
Disclosure protocol
As part of the CNSC's regulatory requirements, major licensees must have robust public information and disclosure programs in place. To obtain more information, visit McMaster University’s website.
Regulatory reporting

- McMaster nuclear facilities regulatory oversight
- Licensing requirements for Class II nuclear facilities
- Regulatory actions
- Nuclear-related event reports
Other key topics
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