Radiation exposure in the workplace must be accurately measured and monitored for protection of employees and employers alike.
For 25 years, Dosimetry Badge has been a privately held company offering high-quality radiation monitoring dosimeters, better known as xray badges, at low prices with no hidden fees. There’s a reason we’ve remained loyal to our mission and to each other we believe in our work. We believe in being the invisible guardians of nurses, doctors, veterinarians, first responders, chiropractors, power plant employees and airport security screeners, their coworkers, and their surrounding communities. The people who use our products, the people we help keep safe, are the very people who keep us all safe. Its noble work they do, and we take our portion of it, their safety, very seriously. At the end of the day, safety is why were in business.
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Control dosimeters are used to measure exposure from non-occupational sources such as cosmic radiation, irradiation that may occur during badge shipment and natural radioactive material found in building materials and soil. A complimentary control dosimeter is provided for each type of whole body badge (OSL, neutron, extremity) for each account. If all of your group badges are stored in the same area, one control for each whole badge type and wear period will suffice. However, if your account is split into groups, and badges are re-shipped to other locations, it is appropriate to have control dosimeters accompany those badges. Not having control dosimeters (for dosimeters that are re-shipped) may result in doses that do not represent the actual dose received by the individual(s) being monitored. For this purpose, additional control dosimeters may be purchased.
Control dosimeters should be stored in a location away from the radiation at your facility. Break rooms or reception areas are good examples of areas that are typically appropriate. Never store the control dosimeters in a lead box or safe. never issue a control dosimeter to an individual or use one as an area monitor.
The control dosimeter should be returned along with the dosimeters for the same wear period.
Proper use of the control badge is crucial for the accurate analysis of your personnel dosimeters and for assigning accurate dose results.
Below are the answers to frequently asked qestions
regarding control dosimeters
EXTERNAL OCCUPATIONAL DOSE LIMITS
FOR PERSONNEL MONITORING
Personnel monitoring of occupational exposure to radiation is required by regulations when the employees may be receiving greater than ten percent of any applicable radiation dose limit. Personnel monitoring normally means the issuing of a dosimeter to an employee to track the dose received. It is often difficult to ensure that an employee has not exceeded the ten percent level under any foreseeable circumstances, therefore dosimeters are widely used. Optically Stimulated Luminescent dosimeters are two devices commonly used for monitoring exposure. Either device, if worn and processed properly, is capable of providing an accurate assessment of the dose received from a variety of radiation sources.
Annual occupational dose limits (reference 10 CFR 20.1201, 20.1207, 20.1208) are established for different parts of the body as follows:
The whole body refers to the head and trunk of the body; including the arms above the elbows, the legs above the knees, and the reproductive organs. The skin refers to the skin anywhere on the body. The extremities refer to the arms below the elbow and legs below the knees. (Reference 10 CFR 20.1003) Dosimetry reports provided by Dosimetry Badge provide the doses in units of millirem. When the dosimeter is worn on the body, a deep shallow, and eye dose will be reported.
Extremity dose is monitored using ring or wrist dosimeters. Only a shallow dose measurement is provided for extremity monitoring.
Organizations using radiation sources are also required to control those sources so that no member of the public receives more than 100 millirem per year. Also, radiation doses in unrestricted areas may not exceed 2 mrem in any one hour. Dosimeters can be helpful in demonstrating compliance with these limits. Dosimeters used as area monitors are posted at fixed locations to monitor local area doses. Environmental dosimeters are sealed in weather-resistant packaging so they can be posted outside. (Reference 10 CFR 20.1302)
Occupational dose does not include the dose from natural background, medical or dental diagnosis, or medical therapy. For comparison, NCRP Report 93, 1987 shows that the average annual exposures to individuals to be 360 mrem from natural and manmade sources, including routine medical procedures. An individual will typically receive approximately 5 mrem of radiation exposure on a coast-to-coast airline flight, 8 to 20 mrem from a chest x-ray, 10 mrem from a dental x-ray, or 22 mrem from a cervical spine x-ray.
For information on regulatory requirements, refer to the Nuclear Regulatory Commission regulations in Title 10 of the Code of Federal Regulations, Part 20, of the radiation protection regulations of your state.