Some results are shown for pin cell test cases and Keff uncertainty presented. Non-destructive techniques are still under development for less accessible structures. This type of method is better suited for field testing. Key Issues in Modelling Complex Substrates -- References -- pt. This document, as well as any data and map included herein, are without prejudice to the status of or sovereignty over any territory, to the delimitation of international frontiers and boundaries and to the name of any territory, city or area. Each sub-group has been identified according to the quality of given information or with respect to the used computer code.
Large variability among the participants was observed in the uncertainty ranges obtained for the output. Moreover, the use of correlations between chemical or petrographic analysis of reactive aggregate recovered in core samples, residual swelling tests, in situ conditions temperature and humidity , and structural measures, should be exploited to improve the predictive capability of this combined approach. Weight factors are attributed to each time trend to make possible the summing up of the error and the achievements of a unique threshold for accepting a calculation. We compare nominal efficiencies, i. Main differences seem to arise indirectly from user effects.
It would be completed with laboratory experimentation. The benchmark is structured around the reflood phase associated influential phenomena, identification of relevant parameters and initial quantification. The latter requires a multi-scale approach i. Fourteen institutions are participating in phase I. Contribution from industry, technical safety organizations and regulatory bodies was present. A potential for a new design bases standard was acknowledged.
This generic inspection document contains typical sheets depending on the related mechanism. The information from these sensitivity calculations will be used in an uncertainty analysis to be performed in the future. The opinions expressed and arguments employed herein do not necessarily reflect the official views of the Organisation or of the governments of its member countries. This volume has taken more than ten years to compile. In urines, the hydrate conversion is appreciably slower and the rate depends upon the method of pretreatment.
This would allow accumulating experience and gaining confidence. By now such methods are mainly applied to classic deterministic environment but it is believed that their benefits could be extended to other fields. The corrosion of the reinforcement and its consequences, i. Topics in Safety, Risk, Reliability and Quality, vol 9999. Thermodynamic Sorption Modelling of Substrates Relevant to Radioactive Waste Disposal -- 3. It consists of two main parts. Sixty six ageing sheets have been written on this basis.
The distributions of the fission reaction rate in a weakly coupled system of the Kef of the World class are analyzed. The Committee shall ensure that valuable end-products of the technical reviews and analyses are produced and available to members in a timely manner. Contents: Extended Summary -- Part 1. The research summarized in this review deals with approaches to resolve the problems related to thermodynamic equilibrium constants and solubility of solid phases in the field of radioactive waste management. Status Report, Summaries of the Main Results, Interpretations of Test Cases, and Conclusions and Recommendations -- -1.
Conclusions and Recommendations -- References -- pt. An appropriate repair is usually made by lining the inside surfaces of the affected areas with a flexible membrane. Series Title: Responsibility: Organisation for Economic Co-operation and Development and Nuclear Energy Agency. The selected ligands are oxalate, citrate, ethylenediaminetetraacetate edta and α-isosaccharinate isa , and the elements considered in the review are U, Np, Pu, Am, Tc, Ni, Se and Zr, as well as the necessary basic data concerning protonation of the ligands and interactions with the major competing elements Na, K, Mg and Ca. From each of the activities a description of the objectives, development, main results, conclusions and recommendations in case it is finalized was presented. The most important aspect to consider is the swelling anisotropy induced by stresses; the second one is the creep.
This benchmark was characterized by the large number of participants 12 and the set of nine different codes and versions used. Missing or unreliable data in these unstable redox states are of no importance from the viewpoint of application in environmental modelling studies. Principal Results and Assessment of Sorption Models -- 6. The constants determined in this work were used to predict the solubility of calcium oxalate hydrates at different pH in urine-like liquors. This acceleration method is expected to contribute to prevention of incorrect Monte Carlo criticality calculations.
A physical explanation of it is given and used to construct a weighting method for its elimination. The nuclear industry badly needs a good example, he continued. It is mainly based on visual inspection, distance and deflection measurements as well as crack monitoring. The methods applied resulted in reasonably similar results. Uncertainties are formally analysed and probabilistically treated using a Bayesian inference framework. The conclusions derived from both benchmarks where consistent and stressed the need for a good reference case, an eligible code with high enough accuracy, and well characterized uncertain inputs.