A practical walkthrough of shielding, dosimetry, and provincial requirements for veterinary x-ray equipment, and the gaps that come up most often when practices get a closer look.
I’ll be honest: radiation safety is one of those topics that gets a five-minute mention during a new hire’s onboarding and then quietly stops being talked about until something forces the issue, an inspection, an insurance audit, or a staff member asking why they’ve never worn a dosimeter badge. It’s not that vets don’t care about safety. It’s that x-ray becomes so routine that the protocols around it fade into the background, right up until they matter.
This isn’t a scare piece, and it’s not a repeat of the PPE basics either (if you want that ground covered, our piece on hands-free x-ray technique already walks through aprons, thyroid shields, and dosimeters in detail). What this piece covers is the layer above that: where Canada’s rules on veterinary x-ray equipment actually come from, who enforces them, the specific things that catch practices off guard, and how to build an actual written program instead of a folder of paperwork nobody’s looked at in years.
Where the Rules Actually Come From
This trips people up more than anything else: there isn’t one single “Canadian x-ray law” for veterinary practices. Radiation safety in Canada works in layers, federal guidance, federal law on specific equipment types, and provincial enforcement, and knowing which layer covers what matters when you’re trying to figure out what you’re actually required to do.
At the federal level, Health Canada’s Safety Code 28: Radiation Protection in Veterinary Medicine sets out recommended safety procedures for installing and using veterinary x-ray equipment. It’s the foundational reference most provincial standards are built on, covering shielding principles, room layout, and operator protection. It functions as guidance rather than binding law on its own, but it’s the document nearly every provincial requirement traces back to, and it’s worth reading directly if you’ve never seen it.
The Radiation Emitting Devices Act is federal law, and it’s where a specific, often-missed rule lives: hand-held x-ray units do not meet Canadian requirements and are not permitted for use in this country, full stop. This matters because hand-held pistol-grip style units are marketed heavily in the US veterinary space, and it’s an easy trap for a Canadian practice to fall into if someone’s shopping based on American forums or American product ads. Portable and mobile x-ray generators, the kind mounted on a cart or tripod stand, like the systems most practices actually use for equine and field work, are permitted. Hand-held is a different category entirely, and it’s simply off the table here, regardless of what’s available for order online.
Day-to-day enforcement, inspections, permitting, and specific technical requirements sit with the provinces. Ontario’s Occupational Health and Safety Act (Regulation 861, X-Ray Safety) and the Healing Arts Radiation Protection Act cover most permanently installed veterinary x-ray equipment there, administered by the Ministry of Labour, and any modification to permanently installed equipment must be reviewed and approved by an inspector before it’s used again. British Columbia, Alberta, Saskatchewan, and Manitoba each have their own frameworks and regulatory bodies. If you don’t know which body actually inspects your practice, that’s worth finding out before it finds you, not after.
The Three Principles Everything Else Is Built On
Every shielding requirement, every piece of PPE, every room layout guideline comes back to three ideas, often summarized as ALARA (As Low As Reasonably Achievable):
Time. Minimize how long anyone spends near an active beam. This is part of why sedation and positioning aids exist, not just for patient comfort, but to reduce how long a staff member’s hands are anywhere near the exposure field.
Distance. Radiation intensity drops off sharply with distance from the source. Where possible, staff should step back from the table during exposure rather than staying close “just in case.” Roughly six feet is a commonly cited minimum working distance for anyone without lead shielding.
Shielding. When time and distance aren’t enough on their own, appropriately rated lead or lead-equivalent barriers do the rest, whether that’s a fixed wall barrier, a mobile shield, or personal protective equipment.
Shielding: A Quick Refresher, and the Part Most Guides Skip
If someone is in the room during an exposure and isn’t behind a protective barrier, they need to be wearing rated protective equipment, an apron, gloves, a thyroid collar, and ideally lead glasses for anyone regularly present. A widely used industry range for personal shielding is 0.25mm to 0.5mm lead-equivalent, consistent across most jurisdictions’ guidance, though your specific provincial regulator sets the enforceable minimum for your facility, so it’s worth confirming rather than assuming.
The part most PPE guides skip: room shielding is a separate question from personal shielding, and it’s not something you eyeball. Wall, door, and floor shielding for a permanently installed x-ray room is typically determined by a stamped shielding plan, based on your equipment’s output, your expected workload, and what’s on the other side of each wall (an empty hallway needs less than a shared wall with a neighboring tenant or a break room where staff spend hours a day). If your practice has permanently installed equipment and nobody’s ever seen a shielding plan for the room it’s in, that’s worth raising with your equipment provider or provincial regulator, not something to assume was handled when the building was constructed.
Dosimetry: The Part Most Practices Under-Invest In
A dosimetry badge doesn’t protect anyone from radiation. What it does is tell you, in hard numbers, whether your actual day-to-day practices are keeping exposure where it should be. That distinction matters: shielding and positioning are your protection; dosimetry is your evidence that the protection is working, and your early warning system if it isn’t.
The Canadian Veterinary Medical Association supports the use of dosimeters in veterinary practice, and National Dosimetry Services is the primary Canadian provider offering monitoring tailored specifically to the veterinary market. Anyone who’s regularly present during x-ray exposures, not just the primary radiographer, should be enrolled, and badge results should actually be reviewed when they arrive rather than filed away unread.
Special Consideration: Pregnant Staff Members
This comes up in nearly every practice eventually, and it’s worth having a clear answer ready before it does. Prenatal radiation exposure limits are set lower than standard occupational limits, reflecting the increased sensitivity of a developing fetus to radiation exposure compared to an adult. The practical response most practices land on is straightforward: once a staff member has declared a pregnancy, they should not be the one manually restraining patients during exposures or otherwise routinely present in the room during radiographic procedures, full stop, regardless of how experienced or careful they are. This isn’t about doubting anyone’s technique. It’s about the exposure limit itself being different, not the skill required to stay under it.
Having this worked out as policy ahead of time, rather than improvised awkwardly in the moment, is one of the simplest, lowest-cost things a practice can do to actually protect staff.
What Actually Tends to Come Up
Talking to colleagues and looking at how these programs tend to fall short over time, the same handful of issues show up again and again, none of them exotic, all of them fixable in an afternoon:
No written safety procedure. Verbal habits (“we always ask the tech to hold the leg like this”) aren’t the same as a documented protocol staff can be trained against and held to, and a verbal habit doesn’t survive staff turnover the way a written one does.
No one clearly responsible. Every practice needs someone, doesn’t have to be a full-time role, who owns radiation safety specifically: reviewing dosimetry reports, scheduling PPE inspections, keeping records, and being the person who actually knows where the shielding plan is filed. Without a named person, this quietly becomes nobody’s job.
Dosimetry badges present but not consistently worn. Usually not out of carelessness, more often because the habit was never built in during onboarding and nobody’s checking.
PPE that’s aged out without anyone noticing. Aprons don’t announce that they’ve degraded. Without a periodic check, a fluoroscopic check for cracks, or at minimum a visual and physical inspection, thinning goes unnoticed until a survey catches it, or worse, until it doesn’t.
Manual restraint without adequate justification. Sedation, positioning aids, and mechanical restraint should be the default; hands-on restraint should be the exception with documented reasoning, not the routine approach because it’s faster on a busy day.
No record of equipment inspection. Especially relevant for permanently installed systems, where any modification typically needs review by a provincial inspector before use resumes, and where a paper trail matters if your practice is ever audited.
Building an Actual Program, Not Just a Compliance Folder
If you’re starting closer to zero than you’d like to admit, here’s a reasonable sequence:
- Confirm which provincial body regulates your practice and what their specific requirements are. This varies enough between provinces that assuming one province’s rules apply everywhere is a common and avoidable mistake.
- Name someone as the radiation safety lead. It doesn’t need to be a dedicated position, but it does need to be one specific person, not “the team.”
- Write down your actual safety procedure, even a one-page version: who wears what, when sedation is preferred over manual restraint, the pregnancy policy, and who’s responsible for equipment checks.
- Enroll everyone who’s regularly present during exposures in dosimetry monitoring, and actually review the reports when they come in.
- Inspect PPE on a schedule, not just when someone happens to notice a crack.
- Get your equipment formally inspected on a regular cycle. This overlaps with general equipment maintenance, but radiation safety inspection specifically checks things like collimation accuracy and tube housing leakage that a general service check might not, and after any new install or modification, a proper survey confirms the room’s shielding is actually doing its job before regular use begins.
- Keep records somewhere findable. Dosimetry reports, inspection records, and your written procedure should live somewhere a new hire (or an inspector) can actually locate them, not scattered across whoever happened to receive each email.
Frequently Asked Questions
Is hand-held x-ray equipment legal for veterinary use in Canada?
Who regulates veterinary x-ray safety in Canada?
Do all staff present during x-rays need to wear a dosimetry badge?
Should pregnant staff members be present during x-ray exposures?
How often should lead aprons and shielding be inspected?
Does upgrading to a digital x-ray system change radiation safety requirements?
Bringing It Together
Radiation safety compliance isn’t complicated, but it does require someone to actually own it, rather than assuming it’s covered because badges were ordered two years ago or aprons were purchased when the practice opened. A short written procedure, a named safety lead, consistently worn dosimetry, and a regular PPE and equipment inspection schedule cover the vast majority of what provincial inspectors and Health Canada’s guidance actually expect.
If it’s been a while since your imaging equipment had a formal safety inspection, Intriquip’s inspection service covers this specifically, our repair team can address equipment issues that turn up along the way regardless of where the equipment was originally purchased, and our x-ray accessories and PPE line covers aprons, thyroid collars, glasses, and storage racks if any of yours are overdue for replacement. And if this has you thinking about your imaging setup more broadly, our recent piece on choosing between fixed, portable, and CR x-ray systems and our earlier guide to hands-free x-ray technique and PPE are useful next reads.
Further reading:
- Health Canada, Safety Code 28: Radiation Protection in Veterinary Medicine
- College of Veterinarians of Ontario, Radiation Safety Standards
- Radiation Safety Institute of Canada, Regulatory Documents
