Title: Unannounced Interim Ispections
Authors: AVENHAUS RudolfKRIEGER Thomas
Editors: COJAZZI Giacomo
Publisher: Publications Office of the European Union
Publication Year: 2010
JRC N°: JRC58623
ISBN: 978-92-79-16573-3
ISSN: 1018-5593
Other Identifiers: EUR 24512 EN
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC58623
DOI: 10.2788/81921
Type: EUR - Scientific and Technical Research Reports
Abstract: In this study unannounced interim inspections are analyzed in general, and specifically in view of the recently defined IAEA/EURATOM Partnership Approach. In particular the following aspects are addressed: A general discussion of the problem of unannounced interim inspections which includes an identification and description of all the types of assumptions which are necessary to be made for a quantitative treatment, an outline of the general methods identified and proposed for the solution of problems of that kind, the identification of two examples for a detailed analysis to be carried out with the general method identified in the previous steps, and lessons learned and reflections aiming at identifying also practical recommendations on the matter of unannounced interim inspections. As a major result, for a specific facility and a given number of inspections per reference time, e.g., one year, optimal inspection strategies are determined. Whereas for the case that inspection are perfect the results can be guessed, this does not hold anymore for imperfect inspections, e.g., limited sample sizes of seals to be checked. Also, together with the optimal inspection strategies, optimal expected detection times are determined as functions of the parameters of the model, namely number of inspections per reference time interval and probability of not detecting an illegal activity during an inspection.
JRC Directorate:Space, Security and Migration

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