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Cumulative Jets Interaction with Spent Nuclear Fuel

#1327


Research of Cumulative Jets Interaction with Spent Nuclear Fuel

Tech Area / Field

  • ENV-MRA/Modelling and Risk Assessment/Environment

Status
3 Approved without Funding

Registration date
05.08.1998

Leading Institute
VNIITF, Russia, Chelyabinsk reg., Snezhinsk

Collaborators

  • EXPONENT/ Failure Analysis Associates, USA, CA, Menlo Park

Project summary

The project is aimed towards the theoretical computational and experimental researches of the results of cumulative jets interaction with the spent nuclear fuel (SNF).

Performance of these researches will enable to assess the hazard of actions, intended to destruction of SNF containers and to propose (if necessary) possible counter-measures.

The following approaches are planned in the framework of the project:


- computation of initial temperature fields in container, parameters of cumulative jets interaction with SNF, assessment of SNF weight, escaping the container, computational assessment of SNF combustion;
- development and fabrication of container mock-ups with SNF simulators for experimental research;
- performance of experimental research into the process of metallic uranium combustion;
- performance of experiments for investigation of cumulative jets interaction with container mock-ups;
- generalization of experimental data, calibration of computation models;
- computation of environment radioactive contamination around the damaged container, accounting the results of mock-up tests.

The following outcomes would be obtained in the course of project performance:


- results of calculations of cumulative jets interaction with a standard container with SNF;
- mock-ups of containers with SNF simulators for experimental research;
- results of experimental research of cumulative jets interaction with SNF;

2D code MECH (gas dynamics, all strains) will be applied for computation of cumulative jet effect on container and its contents. The computation of temperature fields will be performed by 3D code for heat exchange process computation. Ignition computations will be performed under technique, taking into account reaction kinetics, energy release, heat conductance in 2D geometry. Computation of radiation fields for damaged container will be performed using PRIZMA code (Monte-Carlo method), allowing 3D geometry. 'Research of the process of metallic uranium combustion will be performed in hermetic vessel, filled by different gases and flowing of controlled amount of air. Gravimetric and x-ray phase analysis of uranium combustion products is to be performed.

Experimental research of cumulative jets interaction with container mock-ups will be performed using electric contact, optical chronography, x-ray techniques, applied at VNIITF. Despite the obvious urgency of considered issue we do not know the research in the area.

Considerable effort will be spent on development both computational and experimental research techniques.

The scientific meaning of proposed project is in research of physics of cumulative jets interaction with spent nuclear fuel in container. The obtained results will allow formulating the requirements to containers safety assurance in the places of storage and during transportation.

Fully compliant with ISTC tasks and objectives, the project provides to Russian experts in the field of nuclear weapon development, the opportunity to re-orient their creative capabilities into the field of research and safeguarding the security of storage and transportation of NPP spent fuel.

We invite research institutes, private companies and inpidual experts from the USA, European Union, Japan, Norway and South Korea to participate in the project as collaborators. The way of joint works with collaborators includes joint consideration of technical reports, symposia, workshops, meetings etc.


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The International Science and Technology Center (ISTC) is an intergovernmental organization connecting scientists from Kazakhstan, Armenia, Tajikistan, Kyrgyzstan, and Georgia with their peers and research organizations in the EU, Japan, Republic of Korea, Norway and the United States.

 

ISTC facilitates international science projects and assists the global scientific and business community to source and engage with CIS and Georgian institutes that develop or possess an excellence of scientific know-how.

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