By Committee on the Waste Isolation Pilot P, Board on Radioactive Waste Management, National Research Council

Ultimate file of the committee at the Waste Isolation Pilot Plant for the disposal and repository of radioactive transuranic waste. reviews the end result of a learn performed by means of the committee to enhance knowing of long term functionality of the repository and establish technical ideas for its more desirable potency. Softcover.

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Extra resources for Improving Operations and Long-Term Safety of the Waste Isolation Pilot Plant: Final Report

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The chemical role of MgO is to provide some control of the chemical environment of the waste by reacting with brine and scavenging the CO2 potentially formed in the repository. In presence of CO2, brine pH will be decreased by the formation of carbonic acid. In the acid pH range, soluble actinide carbonate complexes can then form, increasing actinide solubility (Novak and Moore, 1996). 9), where actinides are less soluble and less likely to be released into the environment. The rationale for this expected action of MgO relies on the following assumptions: 1.

Figures A (left) and B (right) Complementary cumulative distribution functions resulting from the performance assessment. In A, the probability of radionuclide release from the repository is compared to the acceptance criteria. In B, a family of CCDF curves is traced to show the effect of different uncertainties. 4. The term “normalized” release means that the release Cj is divided by the release limit Lj. The use of the term “summed” indicates the sum of all Cj/Lj over all the radionuclides with half-life greater than 20 years.

Furthermore, every five years, the DOE must apply to the EPA for recertification of the WIPP. The recertification application must show evidence that the repository is performing as assessed. A monitoring program that emphasizes factors contributing mostly to performance uncertainties could provide important evidence of the ability of the repository to perform its intended function. ” The strategy of the committee is to focus on safety and monitoring activities that would best enhance confidence in the long-term performance and reduce uncertainties in the performance assessment of the WIPP.

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