Codes of new generation - current state of development and prospects for further development

• Published in: Journal of physics. Conference series 2020-03, Vol.1475 (1), p.12009
• Main Authors: Bolshov, L A, Strizhov, V F, Mosunova, N A
• Format: Article
• Language: English
• Subjects: Algorithms; Codes; Complexity; Fission products; Graphical user interface; Integrals; Logos; Nuclear energy; Nuclear fuel cycle; Nuclear fuel elements; Nuclear fuels; Nuclear reactors; Nuclear safety; Physics; Probabilistic safety analysis; Product safety; Radioactive wastes; Software
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1475/1/012009

The work on codes of new generation development was initiated in 2010. Codes of new generation are intended for the safety assessment of NPP with FR (BREST-OD-300 or BN-1200) with closed nuclear fuel cycle. Under "codes of new generation" is understood commercializable software product with the following characteristics: based on the state-of- the-art level of the theoretical models and experimental data; founded on the efficient numerical algorithms; written according to the up to date requirements of the programing languages standards and adjusted to the up to date computing technics; provided with the graphical user interface; documented: users' guide, reference manual, programmers guide; automatically connected with the CAD systems. There is one more requirement to the developed codes of new generation, that is obligate according to the Russian federal rules and regulations to use them for NPP safety assessment: codes should be certified by Rostechnadzor. The first priority was to develop the codes that did not have the Russian analogues but that are required for safety assessment. Starting from 2010 the high-level team was formed including the specialists from scientific institutes, organizations of the State Atomic Energy Corporation ROSATOM, institutions of high education, combining specialist from different areas. This allows achieving the following key results to the mid of 2018: 26 codes have been developed with the different level of detalization and complexity, including integral multi-physical codes (neutronics MCU-FR, ODETTA, CORNER, NDP-ACE, BPSD, COMPLEX; thermohydraulic HYDRA-IBRAE/LM, LOGOS, CONV-3D, KUPOL-BR; fuel rod behavior code BERKUT; codes for analysis of fission products transport in the environment, including safety validation of the disposal of all types of prepared radioactive wastes, ROM, ROUZ, Sibylla, GeRa; codes for modeling processes of the closed nuclear fuel cycle KOD TP and VIZART; code for probabilistic safety analysis CRISS 5.3; integral codes for NPP safety justification SOCRAT-BN and EUCLID), 6 of them are certified in Rostechnadzor; the codes of new generation are distributed by the User License Agreements; the First Codes of New Generation User School was conducted for the young specialists of atomic and other industries; the codes of new generation are used for NPP with BREST-OD- 300 and BN-1200 reactors safety assessment. At the next stage it is assumed to develop the codes of new generation that does not have t