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NITI severe accident research under ISTC coordination
Alexandrov Research Institute of Technology (NITI), Sosnovy Bor, Russia.
A.P. Aleksandrov Research Institute of Technology.
A.P. Alexandrov Research Institute of Technology (NITI).ORCID iD: 0000-0001-7816-8442
Alexandrov Research Institute of Technologies (NITI).
2009 (English)In: Proceedings of  FISA 2009, Seventh European Commission conference on Euratom research and training in reactor systems, 2009Conference paper (Refereed)
Abstract [en]

From the very start of ISTC activities NITI has been involved in its projects on the conversion of industrial and engineering potential from military to civil needs and priorities. These projects include studies aimed at efficient severe accident management (SAM) and safety enhancement of commercial nuclear reactors. Detailed information on the projects is published in /1 - 11/.

Most of the experimental studies have been carried out in the RASPLAV experimental platform, which:

-          Comprises 4 experimental facilities integrated into the shared infrastructure of auxiliary and protective systems. The experimental facilities are based on the principle of induction melting in a cold crucible (IMCC) at different heating frequencies;

-          Enables melting and various manipulations with chemically prototypic corium having mass up to8 kgand temperature up to 3200 С in different atmospheres (inert (Ar, He), oxidizing (steam, air), or their mixtures);

-           Is certified for work with unirradiated uranium and radiolabeled fission product simulants.

In the EU countries results of these ISTC projects are used for reactor application particularly for optimization of NUCLEA - European thermodynamic database, development and implementation of different SAM concepts. Results delivered by the ISTC projects together with data of other projects carried out within national programs have an important reactor application inRussia, i.e.:

-        Jointly with SPbAEP ex-vessel SAM concept [12] has been developed, which foresees corium retention in the reactor cavity of Tyanvan NPP (China) and Kudankulam NPP (India) equipped by VVER-1000 reactors.

-        New oxidic sacrificial material [13] has been developed jointly with ISCh RAS and RSC KI. This material is a key component in the above-mentioned melt retention concept.

-        New crucible-type core catcher for VVER-1000 [14] has been developed and justified in collaboration with SPbAEP, RRC KI, IBRAE RAS, PKF of ROSENERGOATOM, ISCh RAS, SPbGETU, IPPE and SPb GTI (TU).

-        Concept of in-vessel corium retention has been justified for VVER-640 project based on the application of passive safety systems.

The developed concept, ex-vessel catcher and innovative solutions are currently in use in the NPP-2006 projects with VVER-1200, which are under construction inRussia.

Long-term and diverse experience in international projects coordinated by the ISTC generated fruitful cooperation on severe accident issues between NITI and European organizations. The following formats of cooperation can be mentioned:

-        Multi-lateral exchanges with European scientific research centers collaborating within the ISTC projects.

-        Multi-lateral cooperation coordinated by the OECD and RSC KI with the participants of MASCA program. NITI took part in preparing CORTRAN program proposal.

-        Bilateral cooperation within the ISTC partnership projects.

-        Bilateral cooperation with CEA coordinated by Rosatom.

-        Communication with SARNET, so far unilateral (SARNET members have an access to the ISTC project results through the CEG-SAM website).

Short-term perspectives of a broader cooperation are related to the NITI’s initiative to participate in:

-        ROSATOM-EUROATOM program. In particular, a joint call on containment phenomena is under preparation for transnational use of large scale experimental facilities: MISTRA, CEA – PANDA, PSI – KMS, NITI

-        SARNET network of excellence, i.e. in the packages related to severe accident research.

Place, publisher, year, edition, pages
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-53638ISBN: 13- 978-92-79-13302-OAI: diva2:470507
FISA 2009 7th European Commission Conference on Euratom research and training in reactor systems 22 – 24 June 2009 Prague, Czech Republic
QC 20120104Available from: 2011-12-29 Created: 2011-12-29 Last updated: 2012-01-21Bibliographically approved

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Bechta, Sevostian
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