Mirion Dosimetry Services

Mirion Dosimetry Services, operating from Arnhem in the Netherlands, is a recognized personal dosimetry service provider (erkende dosimetriedienst) that measures occupational radiation exposure for tens of thousands of workers across the country. Part of the global Mirion Technologies group, the Dutch operation serves any organization that works with radioactive substances or ionizing radiation-emitting equipment and needs to systematically monitor worker exposure to ensure the effectiveness of radiation hygiene (stralingshygiëne) measures and provide quantitative evidence for regulatory compliance.

The company's core offering is personal dosimetry (persoonsdosimetrie): the systematic measurement and recording of ionizing radiation doses received by individual workers during professional activities. Dosimeters are worn by employees and read out at regular intervals — weekly, monthly, or quarterly depending on the working environment and legal requirements. Mirion Dosimetry Services advises each client on the most appropriate dosimeter type and readout frequency for their specific situation, and manages the complete logistics of dispatch, collection, dose analysis, and reporting.

Mirion Dosimetry Services offers a full portfolio of dosimeter types tailored to different radiation environments and body regions. The TLD (Thermoluminescence Dosimeter) Photon Dosimeter measures exposure to X-rays and gamma radiation and is widely used by employees in hospitals, veterinary clinics, dental practices, and facilities with gamma-emitting radioactive sources. The Neutron Dosimeter combines a round TL dosimeter with a PADC (Polyallyl Diglycol Carbonate) track detector to measure neutron radiation, relevant in nuclear research facilities, cyclotron environments, and specialized industrial settings. Ring and extremity dosimeters (ringdosimeters) monitor dose to the hands and fingers and are routinely issued to staff in nuclear medicine departments, interventional radiology, and radionuclide production. Space dosimeters (ruimtedosimeters) provide ambient dose monitoring for rooms and controlled areas rather than individuals. The Instadose®VUE wireless dosimeter is a modern electronic personal dosimeter that retrieves dose readings wirelessly, providing near-real-time feedback without waiting for a physical readout cycle.

A critical element of Mirion Dosimetry Services' role in the Netherlands is its integration with NDRIS, the Nationaal Dosis Registratie- en Informatie Systeem (National Dose Registration and Information System). NDRIS is the Dutch national registry for occupationally acquired doses of ionizing radiation, operational since 1989. All recognized dosimetry services are legally required to report their measured doses to this system. As a recognized (erkende) dosimetry service, Mirion Dosimetry Services automatically submits dose data to NDRIS on behalf of its clients, relieving organizations of the administrative burden of regulatory reporting and ensuring full compliance with Dutch radiation protection legislation including the Besluit basisveiligheidsnormen stralingsbescherming.

The clients of Mirion Dosimetry Services span every sector in which workers are occupationally exposed to ionizing radiation. Healthcare is the dominant segment, encompassing hospitals — across radiology, radiotherapy, nuclear medicine, interventional cardiology, and surgery — as well as dental practices and veterinary clinics. Industrial clients include companies operating X-ray inspection systems, gamma gauges, and sealed radioactive sources for process measurement and quality control. Nuclear facilities, academic research institutes, universities, cyclotron operators, and radionuclide production facilities are also served. Environmental monitoring programs and first-responder organizations with portable radiological equipment represent additional client groups across the Netherlands.

Mirion Dosimetry Services provides clients with a secure web-based management portal through which authorized personnel can manage their complete dosimetry program online. Organizations can enroll new employees into dosimetry programs, modify or cancel existing subscriptions, and reassign dosimeters between individuals — all without requiring direct contact with the service team. Annual dispatch schedules (verzendschema) are published in advance to help organizations plan dosimeter returns and changeovers throughout the year. The portal provides access to individual and collective dose histories and downloadable dose reports, supporting internal radiation protection documentation and employer record-keeping obligations.

The laboratory holds ISO 17025:2017 accreditation, the internationally recognized standard for testing and calibration laboratories, confirming the technical competence of its dosimetric measurement processes, calibration traceability, and the accuracy of reported dose values. Mirion Dosimetry Services also carries official recognition as a dosimetry service (erkende dosimetriedienst) under Dutch law, authorizing it to conduct legally mandated occupational dose monitoring on behalf of Dutch employers. These dual credentials — international laboratory accreditation and national regulatory recognition — distinguish it from unaccredited monitoring providers and ensure the legal validity of dose records it produces.

With decades of experience managing personal dosimetry programs across the Netherlands and a client base encompassing many tens of thousands of monitored workers, Mirion Dosimetry Services combines specialized local expertise with the global technical infrastructure of Mirion Technologies, one of the world's leading suppliers of radiation measurement and detection equipment. The organization delivers an end-to-end service: from selecting the right dosimeter and managing all dispatch and collection logistics, to accredited dose measurement and analysis, automated NDRIS regulatory reporting, and online account management — making it a reliable, compliant, and administratively streamlined partner for any Dutch organization with obligations under radiation protection law.