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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
Dhanpat Rai, Janet A. Schramke, Dean A. Moore, Gary L. McVay
Nuclear Technology | Volume 75 | Number 3 | December 1986 | Pages 350-355
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT86-A33847
Articles are hosted by Taylor and Francis Online.
Americium-doped glass (0.053 wt% 241Am) was contacted with dilute salt solutions (0.001 MNaClO4), pH buffers, Permian Basin brine (PBB1), and tentimes-diluted PBB1 to determine the aqueous americium concentrations that can be expected in equilibrium with this glass. The americium concentrations in all of these solutions were similar and decreased with increasing pH; americium concentrations decreased to the detection limit (∼10−11.6M) at a pH value of ∼7 and remained at or near the detection limit at pH values >7. Americium concentrations in glass suspensions with pH >5 were found to be controlled by the dissolution of an americium-solid. The value of the log of the equilibrium constant for the solubility of this americium-solid (Am-solid+3H+ = Am3++ H3-solid) was determined to be ∼10.3. The americium-solid is found to effectively control aqueous americium to very low concentrations under slightly acidic to alkaline conditions. The high ionic strength and the high Cl−concentrations in brine are found not to measurably affect the americium-solid solubility.
