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Indispensable for radiation protection measurements. Choose a lightweight, reliable and robust neutron survey meter to guarantee the safety of your technicians.
Ensure the safety of workers exposed to radiation with electronic personal dosimeters for X-rays, gamma rays, beta rays and neutrons.
What is radiation protection?Radiation safety refers to all measures taken to protect man and his environment against the harmful effects of exposure to ionizing radiation: alpha, beta, gamma and X-rays.
In France, IRSN plays a crucial role as an independent administrative authority, supported by the Institut de Radioprotection et de Sûreté Nucléaire (IRSN), which guarantees the management of dosimetric data on worker exposure to radioactivity.
Radiation exposureSome types of radiation(alpha, beta, gamma and X-rays) are called " ionizing " because they carry enough energy to cause a change in the electrical charge of the atoms they pass through (ionization). Exposure to ionizing radiation therefore corresponds to the interaction of this radiation with matter. Exposure is generally low, but in the event of an accident, for example, people may be exposed to high doses of ionizing radiation.
IrradiationExternal exposure causes external irradiation and can be controlled by the duration of exposure, the distance from the radiation source and the use of protective shielding. A person exposed to an external source of radiation (such as an X-ray) will never carry the slightest trace of radioactivity.
ContaminationRadioactive contamination is often defined as "the undesirable presence of radioactive substances on the surface of or within any medium, including the human body". Contamination is necessarily the result of the dispersion of a radioactive substance, following, for example, careless handling.
Radioactive substances come from a wide variety of sources, and can be in solid, liquid or gaseous form.
* Source: Radiation protection essentials - CEA (Commissariat à l'Energie Atomique et aux Energies Alternatives)
The units of measurement for radioactivity and its effects are Becquerels (Bq) and Sieverts (Sv).
Becquerel :
The Becquerel is a unit derived from radioactivity. It is defined as the activity of a radionuclide that decays at the rate of one disintegration per second.
The Sievert :
The Sievert is a measure of the health effect of low levels of ionizing radiation on the human body. It is defined as the dose equivalent, or the amount of ionizing radiation needed to produce the same amount of damage to human tissue as one Gray (Gy) of X-rays.
The regulatory framework for the protection of workers against the effects of ionizing radiation is the result of harmonized national regulations, public health and labor codes, and European directives. This framework includes decrees and orders governing the protection of workers against the risks of exposure to ionizing radiation. It also follows the recommendations of the International Commission on Radiological Protection (ICRP ).
Understand the ALARA principle and reduce your exposure (As Low As Reasonably Achievable).
The radiation protection officer is responsible for ensuring that people and the environment are protected from the harmful effects of ionizing radiation. This includes taking measures to minimize radiation exposure, such as using lead shielding or maintaining a certain distance from radiation sources. The competent person also endeavors to ensure that workers and the public are informed of the risks.
Understanding the role and missions of the radiation protection officer (PCR)
The implementation of monitoring, prevention, protection and access control measures in risk areas aims to prevent or limit the effects of ionizing radiation received by workers and the public. This includes monitoring individual exposure to ionizing radiation.
Dosimetry is mandatory for all workers likely to be exposed to ionizing radiation (in supervised or controlled areas).
Dose readings are accumulated over a predefined period.
Several technologies co-exist: radiophotoluminescence (RPL), optically stimulated luminescence (OSL) and thermally stimulated luminescence (TLD).
Active or operational dosimetry :Operational dosimetry is mandatory for access to controlled areas. Complementary to passive dosimetry, it uses an active dosimeter to measure dose rate and integrated dose equivalent in real time . The electronic personal device measures the amount of energy absorbed by the worker's body and displays it on a digital screen. The main advantage of this system is that it provides real-time information, enabling the immediate implementation of protective measures if necessary. This type of epd dosimeter is worn on the waist, at the level of the iliac crest, or on the chest, and must be worn at all times when working in a controlled zone. An alarm system built into the electronic dosimeter alerts the worker or the control center if the individual dose or dose rate reaches a certain level of radioactivity.
Radiametry :Portable neutron survey meter is used for contamination detection, enabling rapid and immediate on-site measurement of X-ray, gamma and neutron radiation. It provides additional support for the protection and safety of workers during operations.
Fuji Electric supports you in monitoring and controlling theexposure to ionizing radiation of workers within the :
This FAQ is designed to help professionals and the general public better understand radiation protection issues and practices.
Radiation protection covers all measures implemented to protect people from the harmful effects of ionizing radiation. It is essential for healthcare professionals, patients and workers to minimize the risks associated with exposure to radiation.
Ionizing radiation includes X-rays, alpha radiation, neutrons and other types of radiation capable of causing ionization in matter. These radiations are used in various sectors, including nuclear medicine and industrial enterprises.
Exposure monitoring includes dosimetry, which measures the radiation dose received by individuals. This monitoring is crucial for workers, and must comply with the French Labor Code and Public Health Code.
External exposure refers to exposure to radiation sources located outside the body. It is measured using dosimeters worn by workers at their workstations, ensuring continuous monitoring.
In each facility, a Radiation Protection Officer (RPO) or Radiation Protection Advisor is appointed to ensure that radiation protection measures are implemented. The occupational physician also plays a key role in monitoring worker exposure.
The main risks include health effects such as cancer, genetic damage, and other diseases caused by high doses of radiation. Regular monitoring and implementation of protective measures are essential to minimize these risks.
Companies must set up a dosimetry program that includes regular measurement of doses received by workers, the use of individual dosimeters, and record-keeping in accordance with labor code regulations.
Tools include dosimeters, radiation detectors, and personal protective equipment such as gloves and protective clothing. Ongoing training of workers is also crucial to ensure effective protection.
Exposure refers to the amount of radiation present in the environment, while dose measures the amount of radiation absorbed by a person. Dosimetry makes it possible to monitor and record these doses for each individual.
The basic principles include justifying activities involving radiation, optimizing protection (ALARA - As Low As Reasonably Achievable), and limiting the doses received by individuals. These principles are applied in all sectors where radiation is present.
Dosimetry results are used to assess exposure levels, identify areas at risk, and implement corrective measures. They are also shared with regulatory authorities and monitoring organizations such as IRSN.
IRSN and CEA play crucial roles in researching, measuring and monitoring ionizing radiation. They also provide advice and recommendations to improve radiation protection and ensure the safety of the population and workers.
Training includes courses on the principles of radiation protection, the use of measuring equipment, and safety procedures. Ongoing training is essential to maintain a high level of competence and safety in working with radiation.
Radiation protection aims to minimize the doses received by patients while guaranteeing the effectiveness of diagnosis and treatment.
We hope this FAQ answers your questions about radiation protection and ionizing radiation monitoring. For further information, please consult reliable sources such as IRSN and CEA.
Ensure better protection of the public and workers exposed to ionizing radiation with Fuji Electric's innovative radiation protection instrument technologies.
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