Glossary

The material between a radiation source and a potentially exposed person that reduces exposure.

An extra badge sent at customer request for assignment to: – Visitors – New employees – Employees who have lost their normal dosimeter

Free from living micro-organisms.

A type of radiation dosimeter. A TLD measures ionizing radiation exposure by measuring the amount of visible light emitted from a crystal in the detector when the crystal is heated. The amount of light emitted is dependent upon the radiation exposure.

The start and end date that your dosimeter was worn.

For purposes of external exposure, head, trunk, arms above the elbow or legs above the knee.

Electromagnetic radiation caused by deflection of electrons from their original paths, or inner orbital electrons that change their orbital levels around the atomic nucleus. X-rays, like gamma rays can travel long distances through air and most other materials. Like gamma rays, x-rays require more shielding to reduce their intensity than do beta or alpha particles.

Year-to-date accumulated dose