Development and application of an approach for safety assessment of radioactive waste storage facilities for accidental scenarios

Stela Dalva Santos Cota; Ricardo Gomes Passos; Vanderley de Vasconcelos

doi:10.15392/bjrs.v9i1A.1330

Authors

Stela Dalva Santos Cota Center for the Development of the Nuclear Technology - CDTN/CNEN
Ricardo Gomes Passos Center for the Development of the Nuclear Technology - CDTN/CNEN
Vanderley de Vasconcelos Center for the Development of the Nuclear Technology - CDTN/CNEN

DOI:

https://doi.org/10.15392/bjrs.v9i1A.1330

Keywords:

radioactive waste, safety assessment, accidents, SAFRAN, occurrence probability

Abstract

Worldwide there is a huge amount of radioactive waste, including disused sources, decommissioning waste, and naturally occurring radioactive material (NORM) waiting for final disposal, the so-called storage facilities. Results of safety assessment of such facilities are usually required in decision-making during design, modification, safety improvements, periodic safety reviews, and licensing activities. Quantitative safety assessment methodologies used in many areas of nuclear industry involves the evaluation of risk through the definition of scenarios, likelihoods, and consequences, for normal operation and accidents. There are many techniques that can be used in each one of these steps. For screening the accident scenarios, qualitative techniques such as failure modes and effect analysis (FMEA) are available. For a quantitative assessment of occurrence probabilities of undesired events, logical and graphical tools such as fault tree analysis (FTA) are employed. Consequence assessments involve the dose assessment in the workers and the impact of the released materials in the environment and of public exposure to radiation. This work analyzes the application of these traditional safety assessment approaches to storage facilities and how they can be applied to complement specific methodologies used in this area, such as the Safety Assessment Driving Radioactive Waste Management Solutions (SADRWMS), implemented in Safety Assessment Framework (SAFRAN) software tool, made available by International Atomic Energy Agency (IAEA).

Downloads

Download data is not yet available.

References

CNEN - Comissão Nacional de Energia Nuclear. Licenciamento de depósitos de rejeitos radioativos de baixo e médio níveis de radiação. Norma CNEN NN 8.02, Rio de Janeiro: CNEN, 2014.

IAEA - International Atomic Energy Agency. Methodology for safety assessment applied to predisposal waste management. IAEA-TECDOC-1777, Vienna: IAEA, 2015.

CARLSON, C.S. Understanding and applying the fundamentals of FMEAs. In: ANNUAL RELIABILITY AND MAINTAINABILITY SYMPOSIUM, 2014, Colorado Springs, CO, USA.

STAMATELATOS, M. Fault tree handbook with aerospace applications, version 1.1. Office of Safety and Mission Assurance. Washington: NASA Headquarters, Washington DC, USA, 2002a.

STAMATELATOS, M. Probabilistic risk assessment procedures guide for NASA managers and practitioners, version 1.1. Office of Safety and Mission Assurance. Washington: NASA Headquarters, Washington DC, USA, 2002b.

CALIXTO, E. Gas and oil reliability engineering. Modeling and analysis, Elsevier, Amsterdam: Netherlands, 2013.

USNRC - U.S. Nuclear Regulatory Commission, The SPAR-H human reliability analysis method. NUREG/CR-6883, Washington: USNRC, 2005.

USNRC - U.S. Nuclear Regulatory Commission, Recommendations for probabilistic seismic hazard analysis: guidance on uncertainty and use of experts, NUREG/CR-6372, Vols. 1 and 2, Washington: USNRC, 1997.

USNRC - U.S. Nuclear Regulatory Commission, Evaluations of explosions postulated to occur at nearby facilities and on transportation routes near nuclear power plants, Regulatory Guide 1.91, Revision 2, Washington: USNRC, 2013.

USNRC - U.S. Nuclear Regulatory Commission, Standard review plan for the review of safety analysis reports for nuclear power plants, LWR edition: design of structures, components, equipment, and systems. NUREG-0800, Chapter 3, Section 3.1.6 - Aircraft hazards, Washington: USNRC, 2010.

USNRC - U.S. Nuclear Regulatory Commission, Standard review plan for the review of safety analysis reports for nuclear power plants, LWR edition: design of structures, components, equipment, and systems. NUREG-0800, Chapter 3, Section 3.5.1.3 – Turbine missiles, Washington: USNRC, 2007.

USNRC - U.S. Nuclear Regulatory Commission, Evaluation of human reliability analysis methods against good practices, NUREG-1842, Washington: USNRC, 2006.

TOLENTINO, I.B. Desenvolvimento de um simulador dinâmico de análise de consequência para indústrias de processos. Tese de Doutorado (Engenharia Química) - Universidade Estadual de Campinas, Campinas: UNICAMP, 2015.

KWAG, S.; GUPTA, A. Probabilistic risk assessment framework for structural systems under multiple hazards using Bayesian statistics. Nuclear Engineering and Design, v. 315, p. 20-34, 2017.

VASCONCELOS, V.; ANDRADE, M.C.; JORDÃO, E. Use of risk assessment methods for security design and analysis of nuclear and radioactive facilities, In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, Belo Horizonte: Comissão Nacional de Energia Nuclear, 2011.

USNRC - U.S. Nuclear Regulatory Commission. Feasibility study for a risk-informed and performance-based regulatory structure for future plant licensing, NUREG-1860, Vol. 1. Washington: USNRC, 2007.