AS/NZS 3551 is the Australian and New Zealand standard for managing medical equipment — its full title is “Management programs for medical equipment”. The current edition is AS/NZS 3551:2012, updated by Amendment 1 in 2013 and Amendment 2 in 2016.

Read that title again, because it’s the thing most people miss. This isn’t only a testing standard. It sets out how a healthcare facility should manage a medical device across its whole life — from the moment you buy it, through acceptance before first clinical use, through routine testing and maintenance while it’s in service, all the way to safe disposal. Testing is the recurring heartbeat of that program, but the standard is the program.

For a practice, that means AS/NZS 3551 expects three things to exist: a documented management plan, a record of every device and its risk level, and regular testing by someone actually qualified to test medical equipment. Miss any of the three and you’ve got a compliance gap, even if the devices themselves are fine.

It applies well beyond hospitals — dental clinics, radiology, day surgeries, aged care, GP practices and mobile units all fall under it.

AS/NZS 3551 covers medical electrical equipment — the devices that diagnose, monitor or treat a patient, especially anything a patient is connected to. That’s a very different category from the kettle in the tearoom, and it’s tested to a much stricter brief.

A sample of what falls under AS/NZS 3551 in a typical practice:

• ECG machines
• Defibrillators & AEDs
• Patient monitors
• Blood pressure monitors
• Spirometers
• Pulse oximeters
• Infusion & syringe pumps
• Patient weighing scales
• Suction units

The general electrical gear around the same practice: computers, fridges, power boards — isn’t tested under 3551. That’s AS/NZS 3760, a separate standard for everyday appliances. A compliant clinic runs both, which is why we cover both in one visit.

Two different questions: is it safe, and is it accurate? AS/NZS 3551 testing answers two things about every device, and they’re not the same check.

Electrical safety asks: can this device hurt someone? A biomedical technician measures protective earth resistance, insulation resistance and leakage currents — including the leakage that could pass through a patient connected to the device. This is the check that a domestic appliance tester simply isn’t equipped to do properly on medical equipment.

Performance verification asks: is this device still telling the truth? A machine can be perfectly safe to touch and still be reading wrong. A defibrillator that delivers the incorrect energy, an infusion pump that runs fast, a patient scale that’s drifted — none of these trip a safety alarm. Performance testing confirms the device still does its clinical job to spec.

You need both. Safety without performance leaves you with a device that won’t shock anyone but might mislead a diagnosis. Performance without safety is the opposite risk. AS/NZS 3551 covers the pair, and so do we – all in one pass.

AS/NZS 3551 doesn’t hand you a single number. It’s risk-based: the interval for each device is set by its risk classification, how critical it is, and the manufacturer’s guidance, all captured in your management program.

In practice, that means a high-risk, life-supporting device is tested more often than a low-risk one, and the manufacturer’s service interval sets a floor you don’t drop below. For most medical equipment in most practices, that lands on a regular annual cycle, with higher-risk items scheduled more frequently.

The point of the risk-based approach is that you’re not over-testing a simple device or under-testing a critical one — but it only works if someone’s actually classifying your equipment and tracking the dates. We do both, and we send the reminder before anything’s due, so a lapsed interval never becomes the thing an assessor finds.

“It passed” isn’t a compliant record. AS/NZS 3551 expects the management program and its documentation to stand up on their own, which is exactly what an accreditation assessor comes to see. A proper result gives you:

• An asset register — every device by make, model and serial number, so nothing’s invisible.
• A risk classification for each device, driving its test interval.
• Recorded test results — the actual electrical safety measurements and performance checks, not just a pass sticker.
• The next due date, tracked, so the program keeps running.
• Fault and corrective-action records for anything that failed, was repaired, or was removed from service.

Hand that to an assessor and there’s nothing to explain. That’s the difference between paperwork you scramble to assemble the week before, and a program that’s simply always current.

This is where a lot of practices get caught out. Testing medical equipment to AS/NZS 3551 needs a competent biomedical technician — someone with the electronics background, the medical-device knowledge, and the calibrated test equipment to run both the safety and performance checks correctly.

An electrician working to the domestic-appliance standard can tag your fridge. They’re not equipped to verify that your defibrillator delivers the right energy, and a “tested” sticker from the wrong standard won’t protect you or your patients. If the person testing your medical equipment can’t show you real measurements against AS/NZS 3551, you don’t have compliance — you have a sticker.

We’re a biomedical service organisation. It’s the whole job, not a sideline.

We bring the full suite of calibrated test equipment to your practice and work around your patient list — no shipping a device away for a fortnight. Every in-scope device gets its safety and performance checks, results go straight into your asset register, and anything that fails is flagged on the day with a clear next step.

You get real measurements, a live register, automated recall reminders, and reports written to sit straight in your accreditation evidence. We’ve done exactly this for more than 3,500 healthcare sites across NSW, ACT, VIC, QLD, NT and SA for over twenty years, metro to remote, with no surprise travel fees.