Radiation-Emitting Medical Devices in Thailand: Thai FDA and OAP

Manufacturers of X-ray systems, CT scanners, and other ionizing radiation equipment routinely plan their Thailand market entry around Thai FDA registration and stop there. That is only half the requirement. Radiation-emitting medical devices sit at the intersection of two separate Thai government bodies, each running its own licensing process, and a device cannot go into clinical use in Thailand until both are satisfied. Manufacturers who treat the second license as a formality to sort out after registration tend to find themselves with an approved device and no facility legally able to operate it.

Two Regulators, Two Licenses, One Piece of Equipment

Thai FDA's Medical Device Control Division (MDCD) governs the safety and performance of radiation-emitting equipment as a medical product under the Medical Device Act B.E. 2562 (2019), the same framework governing any other device. The Office of Atoms for Peace (OAP), under the Ministry of Higher Education, Science, Research and Innovation, separately governs radiation safety and licenses the facilities that use ionizing radiation sources, under the Atomic Energy for Peace Act B.E. 2504 (1961) and its later amendments. For ionizing radiation equipment, X-ray machines, CT scanners, fluoroscopy systems, linear accelerators, and nuclear medicine equipment, both a Thai FDA registration certificate and an OAP license covering the specific equipment and installation facility are required before clinical use, and having one without the other authorizes nothing. The two processes run in parallel rather than sequentially, but they have to be coordinated, because OAP's facility license application needs documentation of the device model and its radiation output specifications, and that documentation has to match the Thai FDA-registered device exactly. Non-ionizing devices, including lasers, ultrasound equipment, and electromagnetic field therapy devices, fall under Thai FDA's Medical Device Act jurisdiction alone and sit outside OAP's licensing framework, though certain high-power lasers used in medical and aesthetic settings carry their own additional controls.

What the Thai FDA Side Requires

Radiation-emitting devices are classified under Thailand's standard three-class risk system using intended use and the nature of the risk posed, just like any other device. Diagnostic X-ray equipment typically falls into Class 2, while therapeutic radiation equipment such as linear accelerators and brachytherapy systems is classified Class 3, reflecting the higher energy levels and more critical clinical application involved. The CSDT dossier for these devices carries additional technical documentation beyond the standard safety and performance data. It needs detailed radiation output specifications: the type of radiation emitted (X-ray, gamma, electron beam, laser wavelength), the energy levels or dose rates achievable, and the intended dose delivery, all of which must line up with whatever IEC or ISO standard compliance is claimed in the CSDT's essential principles section. It needs demonstrated compliance with the applicable IEC standards themselves: the IEC 60601-1 family with its IEC 60601-1-3 radiation protection supplement for diagnostic X-ray equipment, and modality-specific standards such as IEC 60601-2-1 for electron accelerators or IEC 60601-2-11 for gamma beam equipment for therapeutic devices. It needs a description of the device's radiation protection features, beam limiting devices, interlocks, shielding, output indicators, backed by test reports from accredited laboratories evidencing compliance with IEC 60601-1-3 or an equivalent standard. And it needs installation requirements covering radiation shielding for the room where the device will sit, with shielding calculations specific to the device model and its maximum output, since those calculations are what feed directly into the OAP facility application.

What OAP Requires, and in What Order

OAP's licensing runs in four stages. Before ionizing radiation equipment can even be imported, an OAP equipment import license is required, and the application needs documentation of the equipment type, model, and radiation output specifications, the intended use facility, and the designated radiation safety officer; a copy of the Thai FDA registration certificate, or a letter confirming registration is in progress, is typically part of this package. The facility where the equipment will actually be installed needs its own OAP license, granted after an OAP inspector verifies the installation room's shielding meets OAP's standards for that specific equipment model and its maximum output; the shielding design has to be submitted before installation begins, with OAP inspecting again after installation is complete and before clinical use starts. The facility also has to designate a qualified Radiation Safety Officer holding OAP-recognized radiation safety qualifications, responsible for the facility's protection program, staff dosimetry monitoring, and the annual quality assurance and safety inspections OAP requires. Finally, OAP facility licenses need annual renewal, which requires a quality assurance test report confirming the equipment's output stays within specified parameters, updated dosimetry records, and confirmation the Radiation Safety Officer remains qualified and active; a facility operating on an expired OAP license cannot legally use the equipment until renewal is complete.

Laser Devices Sit Outside OAP but Still Carry Real Requirements

Medical and aesthetic laser devices are regulated as medical devices under the Medical Device Act and classified by intended use and risk, separate from OAP's ionizing radiation jurisdiction. IEC 60825-1 classifies lasers into hazard classes 1 through 4, with Class 4 presenting the highest risk; medical lasers used for cutting, ablation, or tissue coagulation are typically Class 4, while low-level laser therapy devices operate at lower power and may sit at Class 3B or 3R. Thai FDA's own classification under the Medical Device Act tracks the device's medical intended use rather than its IEC laser class directly, but the IEC class still drives much of the safety engineering documentation required in the CSDT, and Class 4 medical lasers are typically Thai Class 3, requiring a full dossier with clinical data. Clinical facilities using Class 3B and 4 lasers need designated laser-controlled areas, mandatory training for anyone operating in or near the treatment area, laser safety eyewear, and access-point interlocks, none of which OAP administers; these are enforced through Thai FDA's own post-market inspection and facility oversight programs.

Sequencing the Two Applications Without Losing Time

Because OAP's facility inspection depends on shielding calculations tied to a specific device model, and those calculations in turn depend on radiation output data that also belongs in the Thai FDA CSDT, the two applications are far more efficient when prepared from a single shared technical package rather than two separate efforts started at different times. A manufacturer or Thai distributor who finalizes the Thai FDA dossier first and only then turns to OAP's requirements typically has to reassemble radiation output and shielding documentation a second time, adding weeks to facility commissioning. Starting both applications from the same equipment specification file, and confirming the intended installation facility's Radiation Safety Officer arrangement before either application is filed, keeps the two regulatory tracks moving on comparable timelines instead of one waiting on the other.

The most common mistake with radiation-emitting devices is treating the OAP license as a post-registration afterthought, only to discover OAP needs documentation that should have been prepared alongside the Thai FDA dossier from the start. DeeMED Consulting supports Thai FDA CSDT preparation for radiation-emitting devices with the shielding, output specification, and safety officer documentation built in from the outset, so the Thai FDA and OAP pathways move on the same timeline instead of one blocking the other.