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Nuclear and radiation safety and security

Niewodniczański J.

Nukleonika

2008

Vol. 53, suppl. 2

5--10

All applications of nuclear materials as well as of any sources of ionizing radiation are accompanied by a risk of radioactive contamination of the environment or unnecessary overexposure of workers and the general public. Such an incident may result from malfunctioning of devices (radiation sources, shields, monitoring systems etc.) or a diversion from accepted procedures; it may be also intentional (sabotage or terrorist actions). All such incidents may be harmful for the victims, but they also may ruin the image of a given technology, irrespectively of the country or institution where it has occurred. Safe, secure, peaceful and efficient use of nuclear energy as well as of any source of ionizing radiation requires sustainable tools, including infrastructure that provides legal, regulatory, technological, human and industrial support for that programme. Therefore, the measures assuring radiation and nuclear safety and security, including physical protection of nuclear materials and radioactive sources, originate from internationally established and controlled principles on which obligatory national regulations are based. Evolution of technologies and changes of global or regional political situation may lead to new threats which creates a need to introduce new legal and institutional instruments, both national and international. Poland seems to be well situated in the present nuclear and radiation safety and security system.

Synthesis and Evaluation Analysis of the Indicator Information in Nuclear Safeguards Applications by Computing With Words

Liu J., Ruan D., Carchon R.

International Journal of Applied Mathematics and Computer Science

2002

Vol. 12, no 3

449-462

This paper aims at the handling and treatment of nuclear safeguard relevant information by using a linguistic assessment approach. This is based on a hierarchical analysis of a State's nuclear activities in a multi-layer structure of the evaluation model. After a hierarchical analysis of the State's nuclear activities on the basis of the IAEA Physical Model, the addressed objective is divided into several less complex levels. The overall evaluation can be obtained step by step from those lower levels. Special emphasis is put on the synthesis and evaluation analysis of the Physical Model indicator information. Accordingly, the aggregation process with the consideration of the different kinds of qualitative criteria is in focus. Especially, the symbolic approach is considered by the direct computation on linguistic values instead of the approximation approach using the associated membership function. In this framework, several kinds of ordinal linguistic aggregation operators are presented and analyzed. The application of these linguistic aggregation operators to the combination of the Physical Model indicator information is provided. An example is given to support and clarify the mathematical formalism.