The method of substantiation of the decision on the sufficiency of values of quantitative performance indicators of physical protection system of nuclear facilities

The method of substantiation of the decision on the sufficiency of values of quantitative performance indicators of physical protection system of nuclear facilities.

Nikiforov A. S., Mordashkin V. K.

Based on the analysis of regulatory documents related to the use of quantitative performance indicators of physical protection systems of nuclear facilities (NFs) the following aspects were established: the relevance of the conducted research; and the principles of construction and application of methods of substantiation of the decision on the sufficiency of values of quantitative performance indicators (VQPI) of physical protection systems of NFs.
The research was carried out in order to create a method of substantiation of the decision on the sufficiency of VQPI of physical protection systems of NFs, which has a practical focus.
The analysis of works in the field of determining of VQPI of physical protection systems of NFs has shown that the new option in the proposed method is the consideration of features of NFs, which are not covered by the parameters of the regulatory method of evaluation of performance indicators of physical protection systems of NFs. The following features of NFs were determined:
▪ the importance of the components;
▪ the duplication of functions between the components;
▪ the backup of operations in the components;
▪ the availability of operations for on-site transportation of physical protection items; the cyclicity of finding of physical protection items on the territory of the NF components store.
The mathematical apparatus for system analysis and synthesis was used to consider the mentioned features of NFs when substantiating the decision on the sufficiency of VQPI of physical protection systems of NFs. As a result, the main dependencies and the algorithm for implementing the proposed method were obtained. The possibilities of the proposed method were shown on the examples typical of physical protection systems of NFs.

Keywords: nuclear facility features, physical protection system, performance, quantitative performance indicator, sufficiency.

Article language: Russian. Pp. 57–81. [in Russian]. DOI: 10.26277/SECNRS.2023.108.2.004.