Radiation Safety Guide

Radiation Protection Services (RPS) has the responsibility to implement the radiation safety program at Stony Brook University. The complete rules and regulations for the safe use of radioactive materials can be found in the University Radiation Protection Committee (URPC) Policies and Procedures booklet, which is available in each authorized radioactive materials laboratory. This booklet is provided to aid you in recognizing your responsibility for radiation safety. While it gives an overview of basic radiation safety procedures, it is the responsibility of each radiation worker to be thoroughly familiar with all applicable sections of the Radioactive Materials Safety Manual.

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Personnel Dosimetry

Personnel dosimetry (whole body badges and ring badges) are issued to individuals based on the type and amount of radioactive materials being used, as indicated on the Investigator's application for authorization. Please note that most personnel dosimeters cannot detect the presence of low energy beta particles, such as those emitted from Hydrogen-3, Carbon-14 and Sulfur-35. Personnel using only such isotopes do not need dosimeters.

Badges are changed on a monthly basis. A radiation exposure report is provided to you at the time the badges are changed. You are advised to review this report to monitor any exposure you may have received.

General Rules for Personnel Dosimeter Use:

  1. Wear your body dosimeter(badge) between the waist and neck level. If, however, one area of the body is more likely to be exposed than the rest, the dosimeter should be worn in that area. Wear your ring badge (if issued) on the inside of your protective gloves, with the label turned to the inside of your hand. Double glove your badge hand to prevent ripping of the plastic glove by the ring badge.
  2. Clip the dosimeter to your clothing so that the front stays upright and faces away from your body. Never allow clothing such as lapels, neck ties, buttons, or other items to shield the front of the dosimeter.
  3. A badge must be worn only by the person to whom it is issued.
  4. Badges should be protected against damage by heat, moisture, or pressure.
  5. Badges must not be worn during non-occupational exposure, such as during treatments with medical and dental X-rays.
  6. When not is use, badges should be stored along with the "control" badge on the racks provided. The control badge is used to monitor any radiation the badges on the account receive whenever they are not worn, such as during transit to and from the vendor.
  7. RPS should be notified whenever an individual's personnel dosimeter is no longer needed.

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