Uranium mill tailings are primarily the sandy process waste material from a conventional uranium mill. This ore residue contains the radioactive decay products from the uranium chains (mainly the U-238 chain) and heavy metals. As defined in Title 10, Part 40, of the Code of Fe...
Printable VersionOn this page:Title I – Legacy sitesTitle II - Sites licensed in 1978 or laterMilling is the first step in making natural uranium ore into fuel for nuclear reactors. Uranium mills use chemicals to extract uranium and make "yellowcake," a powder ...
The following table summarizes the key milestones in the schedule that the U.S. Nuclear Regulatory Commission (NRC) has established for its review of the application that Kennecott Uranium Co. submitted to renew its license for the Sweetwater Uranium Mill Conventional Uranium ...
1.0 Site IdentificationType of Site:Uranium Recovery FacilityLocation:Grants, NMLicense No.:SUA-1473Docket No.:40-8905License Status:Reclamation and DecommissioningProject Manager:Thomas Lancaster2.0 Site Status SummaryThe Ambrosia Lake West site (“the facility”) i...
Primarily, the solid residue from a conventional uranium recovery facility in which uranium or thorium ore is crushed and processed mechanically or chemically to recover the uranium, thorium, or other valuable materials. This naturally radioactive ore residue contains the radi...
1.0 General Site InformationSite Location:Cañon City, COAgreement State License Number:CO 369-01Agreement State Contact:Shiya WangShiya.Wang@state.co.usNRC Agreement State Site Monitor:Duncan WhiteDuncan.White@nrc.govNRC Site Monitor:Thomas LancasterThomas.Lancaster@nrc.gov2.0...
This site description was provided by the cognizant Agreement State, and the U.S. Nuclear Regulatory Commission (NRC) makes no claim regarding the validity of the information provided. See our Site Disclaimer for more information.1.0 Site IdentificationType of Site:Complex Dec...
On this page:Publication InformationAbstractDownload complete documentNUREG/CR-7288, Volume 2 (PDF - 17.77 MB)Publication InformationManuscript Completed: November 2021Date Published: March 2022Prepared by:
M. Williams2
M. Fuhrmann3
M. Stefani1
A. Michaud1
W. Likos1
C. B...
FileTitleVolume 1Evaluation of In-Service Radon Barriers over Uranium Mill Tailings Disposal FacilitiesVolume 2Evaluation of In-Service Radon Barriers over Uranium Mill Tailings Disposal Facilities - APPENDICES
This NUREG-series publication was issued for public comment. The comment period is now closed.On this page:Publication InformationAbstractDownload complete documentNUREG-2126 (PDF - 1.72 MB)Publication InformationManuscript Completed: May 2014 Date Published: November 2014Do...
On this page:Publication InformationAbstractDownload complete documentNUREG/CR-7288, Volume 1 (PDF - 104.17 MB)Publication InformationManuscript Completed: November 2021Date Published: March 2022Prepared by:
M. Williams2
M. Fuhrmann3
M. Stefani1
A. Michaud1
W. Likos1
C. ...
A radioactive element with the atomic number 92 and, as found in natural ores, an atomic weight of approximately 238. The two principal natural isotopes are uranium-235 (which comprises 0.7 percent of natural uranium), which is fissile, and uranium-238 (99.3 percent of natur...
On this page:What We RegulateHow We RegulateWhat We RegulateThe nuclear fuel cycle is the process of removing uranium from the ground, converting it into nuclear fuel for use in commercial power reactors, and managing its storage and ultimate disposal as waste. Uranium recover...
NRC NEWSU. S. NUCLEAR REGULATORY COMMISSIONOffice of Public AffairsTelephone: 301/415-8200Washington, DC 20555-001E-mail: opa@nrc.govNo. 99-113 May 28, 1999NRC ISSUES LICENSE AMENDMENT APPROVING STABILIZATION PLAN FOR ATLAS URANIUM MILL TAILINGS PILE IN UTAHThe Nuclear Regulat...
NRC NEWSU. S. NUCLEAR REGULATORY COMMISSIONOFFICE OF PUBLIC AFFAIRS, REGION IV611 Ryan Plaza Drive, Suite 400, Arlington TX 76011CONTACT: Breck Henderson (817) 860-8128/e-mail: bwh@nrc.govRIV: 98-44December 14, 1998NRC CHAIRMAN JACKSON TO HOLD NEWS BRIEFINGIN ...
After the uranium ore concentrate is produced at the mill (where it becomes uranium oxide or "yellow cake"), it is packaged in 55 gallon drums and sent to the uranium conversion plant. At the conversion facility, the yellow cake is processed and is then reacted with ...
Uranium containing the relative concentrations of isotopes found in nature: 0.7 percent uranium-235, 99.3 percent uranium-238, and a trace amount of uranium-234 by mass. In terms of radioactivity, however, natural uranium contains about 2.2 percent uranium-235, 48.6 percent ur...
AtomicNo.RadionuclideClassTable 1Occupational ValuesTable 2Effluent ConcentrationsTable 3Releases toSewersCol. 1Col. 2Col. 3Col. 1Col. 2OralIngestionALI(µCi)InhalationAir(µCi/ml)Water(µCi/ml)MonthlyAverageConcentration(µCi/ml)ALI(µCi)DAC(µCi/ml)92Uranium-2343D, see 230U1E+1Bon...
On this page:Uranium IsotopesEnriching UraniumUranium IsotopesWhen uranium is mined, it consists of approximately 99.3% uranium-238 (U238), 0.7% uranium-235 (U235), and < 0.01% uranium-234 (U234). These are the different uranium isotopes. Isotopes of uranium contain 92 prot...
AtomicNo.RadionuclideClassTable 1Occupational ValuesTable 2Effluent ConcentrationsTable 3Releases toSewersCol. 1Col. 2Col. 3Col. 1Col. 2OralIngestionALI(µCi)InhalationAir(µCi/ml)Water(µCi/ml)MonthlyAverageConcentration(µCi/ml)ALI(µCi)DAC(µCi/ml)92Uranium-236D, see 230U1E+1Bone...
AtomicNo.RadionuclideClassTable 1Occupational ValuesTable 2Effluent ConcentrationsTable 3Releases toSewersCol. 1Col. 2Col. 3Col. 1Col. 2OralIngestionALI(µCi)InhalationAir(µCi/ml)Water(µCi/ml)MonthlyAverageConcentration(µCi/ml)ALI(µCi)DAC(µCi/ml)92Uranium-2383D, see 230U1E+1Bon...
AtomicNo.RadionuclideClassTable 1Occupational ValuesTable 2Effluent ConcentrationsTable 3Releases toSewersCol. 1Col. 2Col. 3Col. 1Col. 2OralIngestionALI(µCi)InhalationAir(µCi/ml)Water(µCi/ml)MonthlyAverageConcentration(µCi/ml)ALI(µCi)DAC(µCi/ml)92Uranium-2392D, see 230U7E+42E+...
AtomicNo.RadionuclideClassTable 1Occupational ValuesTable 2Effluent ConcentrationsTable 3Releases toSewersCol. 1Col. 2Col. 3Col. 1Col. 2OralIngestionALI(µCi)InhalationAir(µCi/ml)Water(µCi/ml)MonthlyAverageConcentration(µCi/ml)ALI(µCi)DAC(µCi/ml)92Uranium-240D, see 230U1E+34E+3...
AtomicNo.RadionuclideClassTable 1Occupational ValuesTable 2Effluent ConcentrationsTable 3Releases toSewersCol. 1Col. 2Col. 3Col. 1Col. 2OralIngestionALI(µCi)InhalationAir(µCi/ml)Water(µCi/ml)MonthlyAverageConcentration(µCi/ml)ALI(µCi)DAC(µCi/ml)92Uranium-231D, see 230U5E+3LLI ...
AtomicNo.RadionuclideClassTable 1Occupational ValuesTable 2Effluent ConcentrationsTable 3Releases toSewersCol. 1Col. 2Col. 3Col. 1Col. 2OralIngestionALI(µCi)InhalationAir(µCi/ml)Water(µCi/ml)MonthlyAverageConcentration(µCi/ml)ALI(µCi)DAC(µCi/ml)92Uranium-232D, see 230U2E+0Bone...