Radiation Safety and Environmental Monitoring

The measurement of radiation levels or doses and the interpretation of the results.

Radiation sources naturally occurring in the environment.

A naturally occurring source of radiation such as the sun, stars, or rocks.

A document submitted to the NRRC for approval to use radiation sources.

All operations related to producing nuclear energy, from mining uranium to managing waste.

Any facility involved in the nuclear fuel cycle, excluding mining, processing, and waste disposal.

A value used in medical imaging to determine if the radiation dose or amount of radiopharmaceuticals in a procedure is unusually high or low for a specific imaging procedure.

The dose equivalent produced by an expanded field in a specified direction at a set depth within a standardized sphere.

A measure of the energy deposited by radiation in a target.

The assessment of radiation doses to an individual or group of people.

A prospective value for an individual's radiation dose used in planned exposure situations to optimize safety and protection of the source.

A value that must not be exceeded in specific activities or circumstances involving radiation exposure.

A measurement of the overall radiation risk to the body, taking into account the various organs and tissues affected.

The weighting factor assigned to each tissue or organ, reflecting its sensitivity to radiation and its contribution to overall health risk.

The process of monitoring radiation levels in or on individuals using equipment worn by them or measuring the amount of radioactive material in or on their bodies or excreted by them.

A device designed specifically to detect hidden objects on or within people or cargo containers.

The act or process of radioactive materials entering the body through breathing, eating, or skin absorption. It also refers to the amount of radioactive material taken into the body during a specific period or event.

A level of radiation exposure, intake, or contamination that triggers an investigation to understand the cause and potential risks.

This process involves weighing the benefits of a planned radiation exposure situation against the potential harm, ensuring the benefits outweigh the risks.

This involves assessing whether taking protective or remedial actions in emergency or existing radiation exposure situations is beneficial, considering the potential reduction in radiation harm against the costs and potential downsides of the actions.

A fixed value that should not be exceeded in specific activities or circumstances related to radiation exposure.

The conditions surrounding living things, including people, animals, and plants, that support life and development, especially those affected by human actions.

The measurement of radiation levels or the presence of radioactive substances in the environment.

A measure of the biological effect of different types of radiation, taking into account its ability to damage tissue.

A decision by a regulatory body that a radiation source or practice does not require full regulation because the radiation exposure is minimal.

An event that involves a potential or actual radiation safety issue. This can include operating errors, equipment failures, or deliberate actions.

The absorbed dose, which represents the amount of energy deposited in a tissue or organ by radiation.

A factor used to assess the biological effectiveness of different types of radiation.

The unit of measurement for equivalent dose, representing the biological impact of radiation.

Using radiation for imaging humans in activities like art, publicity, occupational purposes, legal matters, or health insurance without a medical reason.

The practice of using radiation to detect concealed objects for anti-smuggling efforts.

The practice of using radiation to find hidden objects that may be used for criminal activities or national security threats.

Any practice involving radiation that has not been previously deemed justified.

The process of demonstrating the benefits and necessity of a radiation practice.

A detailed description of the radiation sources used in a practice, including safety measures and potential radiological consequences.

An evaluation of the potential positive and negative outcomes of using radiation in a specific practice.

The estimated frequency and extent to which a specific radiation practice will be used.

An activity involving radiation sources that doesn't require any notification or authorization.

An activity using radiation sources that requires a prior notification to the NRRC before the activity.

Activities involving certain radiation sources that are automatically exempt from the requirements of the regulation, including notification and authorization.

The total amount of radioactivity for a certain nuclide present on the premises at any time.

The concentration of a radionuclide in a specific volume or mass, measured as activity per unit volume or mass.

When the activity concentration of a radionuclide in drinking water or any other exposure pathway surpasses a certain threshold, indicating the possibility of a radiation protection concern.

The submission of a document to the NRRC notifying them of an intention to initiate an activity involving radiation sources.

The exemption criteria prescribed in Section 19 of the regulation, which outlines situations where activities involving naturally occurring radioactive material may require notification.