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Article
Publication date: 1 May 2000

Branko Kontic, Matjaz Ravnik, Peter Stegnar and Burton C. Kross

To clarify uncertainty in predictions of the quantity, radionuclide inventory and activity of waste from the Krsko nuclear power plant, and to illuminate its role in related…

Abstract

To clarify uncertainty in predictions of the quantity, radionuclide inventory and activity of waste from the Krsko nuclear power plant, and to illuminate its role in related policy‐making, we made a scenario analysis in order to find out the variation in waste characteristics if the plant operates five years shorter or longer than anticipated, or if it uses fuel of a higher enrichment (levels between 3 per cent and 5 per cent of U‐235). We used ORIGEN2 computer code for calculations connected to spent fuel, and developed a code for calculating low‐ and intermediate‐level waste. We present and interpret our results using language which can be understood by decision makers and the general public. We believe that the clarification of the issues gained through our analysis will contribute to more informed decision making and be effective in building confidence among professionals, the public and politicians in the process of identifying the most appropriate waste management options.

Details

Environmental Management and Health, vol. 11 no. 2
Type: Research Article
ISSN: 0956-6163

Keywords

Article
Publication date: 1 July 1994

Peter Brennecke and Ingo Beckmerhagen

In Germany radioactive waste with negligible heat generation, i.e. LLWand ILW, is planned to be disposed of in the Konrad repository. Theconstruction and operation of this…

1223

Abstract

In Germany radioactive waste with negligible heat generation, i.e. LLW and ILW, is planned to be disposed of in the Konrad repository. The construction and operation of this disposal mine necessitates quality assurance (QA) and quality control (QC) programmes focusing on the above‐ground and underground facilities as well as on the waste packages to be disposed of. The QA organization provides a division of this facility into three areas with different requirements on the measures to be taken. For classification of systems and companies the results of the safety assessment, in particular of the incident analysis, are used. The waste package QC, i.e. the fulfillment of waste acceptance requirements, is either to be performed by checking the waste producer’s documentation and carrying out random tests or by qualifying and subsequently inspecting the waste conditioning process.

Details

International Journal of Quality & Reliability Management, vol. 11 no. 5
Type: Research Article
ISSN: 0265-671X

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Article
Publication date: 29 August 2019

Gang Peng, Zhiming Gao, Wenjing Yan and Xinlong Feng

This paper aims to consider numerical simulation for radionuclide transport calculations in geological radioactive waste repository.

Abstract

Purpose

This paper aims to consider numerical simulation for radionuclide transport calculations in geological radioactive waste repository.

Design/methodology/approach

The nonlinear two-point flux approximation is used to discretize the diffusion flux and has a fixed stencil. The cell-vertex unknowns are applied to define the auxiliary unknowns and can be interpolated by the cell-centered unknowns. The approximation of convection flux is based on the second-order upwind method with a slope limiter.

Findings

Numerical results illustrate that the positivity-preserving is satisfied in solving this convection-diffusion system and has a second-order convergence rate on the distorted meshes.

Originality/value

A new positivity-preserving nonlinear finite volume scheme is proposed to simulate the far-field model used in the geological radioactive waste repository. Numerical results illustrate that the positivity-preserving is satisfied in solving this convection-diffusion system and has a second-order convergence rate on the distorted meshes.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 2
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 1 August 2003

I.A. Beckmerhagen, H.P. Berg, S.V. Karapetrovic and W.O. Willborn

Integration of function‐specific management systems in organizations is rapidly becoming a topic of interest for managers and auditors alike. This is mainly due to the…

1401

Abstract

Integration of function‐specific management systems in organizations is rapidly becoming a topic of interest for managers and auditors alike. This is mainly due to the proliferation of management system standards that foster compliance with the stated criteria for quality, environmental, occupational health and safety, social responsibility and other different aspects of performance. While most of the available literature on this topic focuses on the integration of standards, there is comparatively little information on how to actually build an integrated system internally. This paper hypothesizes that audits can provide an excellent basis for these integration efforts, discussing the prerequisites, strategies and resources necessary for an effective audit in support of integrated management systems. The paper also describes how audits are used to improve a combined quality and safety management system in a German nuclear facility.

Details

Managerial Auditing Journal, vol. 18 no. 6/7
Type: Research Article
ISSN: 0268-6902

Keywords

Article
Publication date: 1 February 2006

David J LePoire

Many public issues, such as environmental actions, involve a large number of diverse stakeholders such as governments, corporations, organizations (e.g. NGOs), and concerned…

Abstract

Many public issues, such as environmental actions, involve a large number of diverse stakeholders such as governments, corporations, organizations (e.g. NGOs), and concerned citizens. Discussions frequently become contentious as the stakeholders defend their potentially conflicting goals with various assumptions, views, and expert testimony. These issues also tend to involve a range of fields. For example, the disposition of nuclear waste includes issues of economics, science, engineering, politics, and intergenerational justice, each with large uncertainties due to dependences on indirect estimations and the long time periods involved. At the same time that these complex issues might increase in number, due to applications of new technologies, tools are being developed on the Internet to enable flexible learning, visualization, collaborative conferencing, distributed computing, and meaning‐based (semantic) context. These tools might enable improved techniques for debating and discussing these complex issues. A technique that might facilitate orderly discussion of various arguments would include explicit recording and visualization of the evidence, its assumptions and uncertainties, their relationships in constructing the overall argument, and the ways the evidence needs to be generalized to support the argument. A simple argument visualization approach is explored based on a combination of an argument logic framework and techniques for fusing generalized data that are similar to kriging in spatial analysis. This approach is then applied to a recently contested risk analysis of nuclear waste disposition that was debated in a peer‐reviewed journal, involving concerns about uses of data, complex computational models, uncertainty analysis, and expert judgment. The need for wider understanding of such complex issues might be addressed by a convergence of techniques to facilitate greater understanding and the advanced Internet technologies to lower barriers to their adoption.

Details

Journal of Information, Communication and Ethics in Society, vol. 4 no. 1
Type: Research Article
ISSN: 1477-996X

Keywords

Article
Publication date: 1 December 1996

J.R. Weatherby, D.E. Munson and J.G. Argüello

Describes a set of numerical techniques which implement the rate‐dependent multi‐mechanism deformation (M‐D) constitutive model for rock salt in a finite element code for use in…

Abstract

Describes a set of numerical techniques which implement the rate‐dependent multi‐mechanism deformation (M‐D) constitutive model for rock salt in a finite element code for use in three‐dimensional, finite strain simulations of creep closure in deeply buried salt excavations. Presents essential details of the numerical implementation. The constitutive model is exercised in a three‐dimensional closure simulation of a large underground field experiment. Compares results from the simulation against actual closure measurements taken from the experiment.

Details

Engineering Computations, vol. 13 no. 8
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 22 May 2007

Valentin Bertsch, Martin Treitz, Jutta Geldermann and Otto Rentz

Emergency situations may differ in many ways but they share some common characteristics, such as the sudden onset and the need to transparently evaluate various usually…

Abstract

Purpose

Emergency situations may differ in many ways but they share some common characteristics, such as the sudden onset and the need to transparently evaluate various usually conflicting objectives. In nuclear power generation, however, emergency situations constitute a special challenge. The focus of this paper is to highlight the role of multi‐criteria decision analysis (MCDA) in nuclear emergency and recovery management on the basis of a hypothetical case study.

Design/methodology/approach

Multi‐attribute value theory as one field of research within MCDA is introduced. Special emphasis is placed on the modelling of the decision makers' preferences which is a crucial part in any multi‐criteria analysis. A central aim is to facilitate the preference elicitation in group decision processes.

Findings

The management of emergency situations in nuclear power generation necessitates the consideration of technical, economic, environmental, socio‐psychological and political aspects. Furthermore, various stakeholder and expert groups with diverse background knowledge and different views, responsibilities and interests are involved in such a decision‐making process. MCDA can help to take into account various incommensurable aspects and the subjective preferences of the decision makers and thus contribute to transparency and traceability of decision‐making processes. Since the preference parameters are inherently afflicted with uncertainties, thorough sensitivity analyses are important to visualise the impact of the uncertainties in an understandable way.

Originality/value

A new approach to sensitivity analysis is proposed, allowing one to comprehensibly visualise and communicate the impact of the uncertainties associated with the subjective preference parameters on the results of the decision analysis.

Details

International Journal of Energy Sector Management, vol. 1 no. 4
Type: Research Article
ISSN: 1750-6220

Keywords

Article
Publication date: 1 August 1999

Jaroslav Mackerle

This paper gives a bibliographical review of the finite element methods (FEMs) applied to the analysis of ceramics and glass materials. The bibliography at the end of the paper…

2605

Abstract

This paper gives a bibliographical review of the finite element methods (FEMs) applied to the analysis of ceramics and glass materials. The bibliography at the end of the paper contains references to papers, conference proceedings and theses/dissertations on the subject that were published between 1977‐1998. The following topics are included: ceramics – material and mechanical properties in general, ceramic coatings and joining problems, ceramic composites, ferrites, piezoceramics, ceramic tools and machining, material processing simulations, fracture mechanics and damage, applications of ceramic/composites in engineering; glass – material and mechanical properties in general, glass fiber composites, material processing simulations, fracture mechanics and damage, and applications of glasses in engineering.

Details

Engineering Computations, vol. 16 no. 5
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 April 2005

Jaroslav Mackerle

Ceramic materials and glasses have become important in modern industry as well as in the consumer environment. Heat resistant ceramics are used in the metal forming processes or…

5130

Abstract

Purpose

Ceramic materials and glasses have become important in modern industry as well as in the consumer environment. Heat resistant ceramics are used in the metal forming processes or as welding and brazing fixtures, etc. Ceramic materials are frequently used in industries where a wear and chemical resistance are required criteria (seals, liners, grinding wheels, machining tools, etc.). Electrical, magnetic and optical properties of ceramic materials are important in electrical and electronic industries where these materials are used as sensors and actuators, integrated circuits, piezoelectric transducers, ultrasonic devices, microwave devices, magnetic tapes, and in other applications. A significant amount of literature is available on the finite element modelling (FEM) of ceramics and glass. This paper gives a listing of these published papers and is a continuation of the author's bibliography entitled “Finite element modelling of ceramics and glass” and published in Engineering Computations, Vol. 16, 1999, pp. 510‐71 for the period 1977‐1998.

Design/methodology/approach

The form of the paper is a bibliography. Listed references have been retrieved from the author's database, MAKEBASE. Also Compendex has been checked. The period is 1998‐2004.

Findings

Provides a listing of 1,432 references. The following topics are included: ceramics – material and mechanical properties in general, ceramic coatings and joining problems, ceramic composites, piezoceramics, ceramic tools and machining, material processing simulations, fracture mechanics and damage, applications of ceramic/composites in engineering; glass – material and mechanical properties in general, glass fiber composites, material processing simulations, fracture mechanics and damage, and applications of glasses in engineering.

Originality/value

This paper makes it easy for professionals working with the numerical methods with applications to ceramics and glasses to be up‐to‐date in an effective way.

Details

Engineering Computations, vol. 22 no. 3
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 August 2002

Diane Ryland

Asks whether nuclear power is viable as a clean source of energy and an independent energy source and whether it should be used to attain targeted reductions in fossil fuels or as…

1418

Abstract

Asks whether nuclear power is viable as a clean source of energy and an independent energy source and whether it should be used to attain targeted reductions in fossil fuels or as a method of electricity generation. Also considers whether nuclear energy should be used in preference to energy from a third country. Discusses problems such as technological safety, nuclear waste, costs and the individual energy policies of Member States. Cites the main issue as public perception as the subject is regarded as dangerous and secretive. Outlines how the debate in Europe is being re‐evaluated and with the evolution of new science and technology, the positive contribution of nuclear energy to sustainable development is a factor to be weighed in the balance.

Details

Managerial Law, vol. 44 no. 4
Type: Research Article
ISSN: 0309-0558

Keywords

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