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The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
2023 ANS Annual Meeting
June 11–14, 2023
Indianapolis, IN|Marriott Indianapolis Downtown
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The Civil Nuclear Credit Program: An overview
Officially established on November 15, 2021, with the signing of the $1.2 trillion Infrastructure Investment and Jobs Act—aka the Bipartisan Infrastructure Law, or BIL—the Department of Energy’s Civil Nuclear Credit Program was designed to give owners/operators of commercial U.S. reactors the opportunity to apply for certification and competitively bid on credits to help support the continued operation of economically troubled units. Finally, the federal government, and not just certain farsighted state governments, would recognize nuclear energy for its important grid reliability and decarbonization attributes.
We live in a radioactive world - humans always have. Radiation is part of our natural environment. We are exposed to radiation from materials in the earth itself, from naturally occurring radon in the air, from outer space, and from inside our own bodies (as a result of the food and water we consume). This radiation is measured in units called millirems (mrems).
The average dose per person from all sources is about 620 mrems per year. It is not uncommon, however, for any of us to receive less or more than that in a given year (largely due to medical procedures we may undergo). International Standards allow exposure to as much as 5,000 mrems a year for those who work with and around radioactive material.
The Interactive Dose Calculator appears below, but you can also download a printable version of radiation dose chart.
All figures for radiation exposure are average values.
Exposure depends on your elevation (how much air is above you to block radiation). Amounts listed are per year.
Elevations: Atlanta 1050; Chicago 595; Dallas 436; Denver 5280; Las Vegas 2000; Minneapolis 815; Pittsburg 1200; St. Louis 455; Salt Lake City 4400; Spokane 1890. USGS GNIS Search.
Terrestrial (from the ground)
Internal Radiation *
Hours (0.5 mrem per hour in the air)
Medical Diagnostic Tests ‡
Number of millirems are per procedure and are average values. Actual numbers may vary.
Enter the number of procedures per year.
(10 mrem each)
(40 mrem each)
(20 mrem each)
(150 mrem each)
(600 mrem each)
(70 mrem each)
(800 mrem each)
(60 mrem each)
(0.5 mrem each)
(0.1 mrem each)
(200 mrem each)
(700 mrem each)
(1200 mrem each)
(1000 mrem each)
(1274 mrem each)
(300 mrem each)
Your Estimated Annual Radiation Dose:
* Average values.
** Some of the radiation sources listed in this chart result in an exposure to only one part of the body. For example, false teeth and crowns result in a radiation dose to the mouth. The annual dose numbers given here represent the "effective dose" to the whole body.
† The value is less than 1, but adding a value of 1 would be reasonable.
‡ Exposures for medical tests vary depending upon equipment and the patient. The doses listed are an average for an actual exposure.
How is radiation measured? The units used to measure radiation are the rem and the millirem (1/1,000th of a rem). The international unit for measuring radiation exposure is the sievert (Sv), and 1 Sv = 100 rems. Therefore, to convert from the mrem values above to mSv (millisievert), divide the value by 100.
Primary sources for this information are National Council on Radiation Protection and Measurements Reports: #92 Public Radiation Exposure from Nuclear Power Generation in the United States (1987); #93 Ionizing Radiation Exposure of the Population of the United States (1987); #94 Exposure of the Population in the United States and Canada from Natural Background Radiation (1987); #95 Radiation Exposure of the U.S. population from Consumer Products and Miscellaneous Sources, (1987); #100 Exposure of the U.S. Population from Diagnostic Medical Radiation (1989); and #160 Ionizing Radiation Exposure of the Population of the United States (2009).