This editor’s message focuses on highlights from a great 2025 CRPA Conference in Hamilton that blended science, networking, and fun—from a keynote on saving rhinos with nuclear science to a series of engaging sessions, lively hospitality, and unforgettable firsts, attendees left inspired.
This Health Physics Corner discusses Fluorine-18 production in a PET cyclotron. How much Fluorine-18 activity can be generated using a 3-hour irradiation? What’s the approximate unshielded effective dose rate at 3 metres?
For radiation safety professionals, receiving their CRPA(R) designation means achieving the highest level of competency recognized by CRPA in Canada.
CRPA proudly announces the names of the newest CRPA(R)s and shares information about upcoming exam opportunities. Learn more about deadlines, prep resources, and more.
CRPA President Tara Hargreaves reflects on her community’s resilience, celebrates the success of this year’s conference, and shares what’s ahead for professional growth and collaboration.
Get to know CRPA’s new president, Tara Hargreaves, from her career in radiation safety to her passion for mentorship and membership growth. Tara shares her vision for the organization’s future, her leadership journey, her goals, and what excites her most about guiding the association forward.
CRPA president Corie Houldsworth looks back at CRPA’s past and at the history of radiation protection in Canada and beyond. She is also looking forward to what the future holds. She talks about how this ties in with this year’s conference theme: “Forging the Future.”
In this instalment of the Health Physics (HP) Corner, Jeff is checking the activity estimate for monazite ore, which nominally contains 10 MBq of Th-232. If the ambient dose equivalent gamma constant for Th-232 is essentially zero, why is the measurement at 10 cm more than 1,000 times as high as you might expect?
Scott Nichelson, from Texas, is CRPA’s self-proclaimed southernmost member. He is also a member of the Health Physics Society (HPS) and regularly provides updates on HPS events that might be of interest to CRPA Bulletin readers.
In her inaugural message, interim chief editor Tanya Vlaskalin introduces herself to Bulletin readers, thanks outgoing chief editor Dave Niven, for the incredible job he has done over the past seven years, and introduces the theme for this annual conference issue: “Forging a Connection.”
In this instalment of the Health Physics (HP) Corner, Jeff explores dead time—the period after the recording of a particle or pulse when a detector is unable to record another.
In his last CRPA editorial, Dave Niven explains his reasons for leaving, thanks the many people who have supported him over the years, and wishes his successor well.
