What Regulation Covers Medical Equipment Safety Testing?

Medical facilities in NSW must comply with two electrical safety standards: AS/NZS 3551 for clinical devices and AS/NZS 3760 for general electrical equipment. If your clinic has arranged biomedical testing, that only covers your clinical devices.

Key takeaways

• AS/NZS 3551 applies to any electrical equipment within 1,500mm of a patient and must be checked by a biomedical engineer.
• AS/NZS 3760 covers everything outside that area, like reception desks, staff room appliances, waiting room TVs, and computers. This is what a standard test and tag service handles.
• If you mix up these requirements, your clinic could end up non-compliant, paying for the wrong service, or missing important coverage without realising it.

Two standards, two very different jobs

AS/NZS 3760 is the standard most Sydney businesses are familiar with. It covers the testing and tagging of general plug-in electrical equipment in all workplaces. In a medical clinic, this includes everything that isn't a clinical device, such as front desk computers, the phone system, the printer in the admin office, the microwave and kettle in the staff kitchen, the waiting room television, extension leads, and power boards throughout the building.

AS/NZS 3551 is a completely different standard. It covers electrical medical devices used for patient assessment, diagnosis, treatment, and monitoring. Examples include ECG machines, defibrillators, patient monitors, examination lights in patient areas, and dental chairs with electrical components. This standard requires specialist biomedical testing by a qualified biomedical engineer, not by a general test and tag technician.

Understanding the patient environment boundary

The difference between the two standards is based on what AS/NZS 3551 calls the patient environment. This is a zone that extends 1,500mm in every direction from where a patient is during treatment or examination.

Any electrical equipment within that 1,500mm zone is covered by AS/NZS 3551, whether it is a clinical device or not. For example, a ceiling fan directly above an examination table is in the patient environment and must meet biomedical testing requirements. A ceiling fan in the waiting room does not.

This is where things can get tricky. AS/NZS 3551 also applies to any equipment electrically connected to a device within the patient environment, even if it is outside the 1,500mm boundary. For example, if a printer in your admin office is networked to a patient-connected device, it may be covered by AS/NZS 3551. Your biomedical engineer decides this, which is why their specialist knowledge is important.

What this means for your clinic's compliance

SafeWork NSW's Code of Practice on Managing Electrical Risks in the Workplace makes it clear that AS/NZS 3760 does not cover medical devices and equipment in patient care areas. Those items are covered by AS/NZS 3551 instead. This is not a grey area; it is written into the regulatory framework.

The most common compliance gap Test and Tag Sydney sees in medical facilities is not failing to arrange biomedical testing. Most practice managers know they need that. The real gap is the AS/NZS 3760 component, which is often missed because clinics assume biomedical testing covers all electrical equipment.