Lecture: Pebble Bed Modular Reactor

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Created on Friday, 21 May 2010 15:27

Hrvatski IEEE PES odjel i nuklearno društvo organiziraju predavanje

The South African Pebble Bed Modular Reactor (PBMR) and its fuel

Predavanje će održati profesor Johan B. Malherbe, University of Pretoria, South Africa, u 13 h 28.svibnja, dvorana D244 (2. kat D zgrade na Zavodu za visoki napon i energetiku).

PBMR dizajn nuklearnog reaktora nudi modularano rješenje, male snage i dodatne pouzdanosti.

Više o predavanju i predavaču u nastavku poruke.

Hrvatsko nuklearno društvo i IEEE PES odjel organiziraju predavanje

The South African Pebble Bed Modular Reactor (PBMR) and its fuel

Predavanje će održati profesor Johan B. Malherbe, University of Pretoria, South Africa, u 13 h 28. svibnja, dvorana D244 (2. kat D zgrade na Zavodu za visoki napon i energetiku, FER Zagreb).

PBMR dizajn nuklearnog reaktora nudi modularno rješenje, male snage i dodatne pouzdanosti.

Više o predavanju i predavaču u nastavku poruke.

One of the new inherently safe designs in nuclear reactors is the pebble bed modular reactor (PBMR).  This talk will give some salient features of the South Africa design of the PBMR.  Special attention will be given on the design and functions of the fuel particles which is on the form of small multilayered spheres, called TRISO particles.  These coated particles consist of a UO2 kernel surrounded by four layers, which are all CVD deposited.  The layers are a buffer graphite layer next to the kernel followed by an inner pyrolytic carbon layer (IPyC), a SiC layer and finally an outer pyrolytic carbon layer (OPyC).  Because the coated particles operate in a very harsh environment (e.g. high temperatures with repeated rapid cooling and heating-up times, high flux neutron irradiation, containment of the radioactive fission products) the microstructure and composition of the layers are extremely important to preserve the integrity of the particles.

Johan Malherbe is professor of physics and head of the department of physics at the University of Pretoria.

His field of expertise is in surface analysis and ion-solid interactions, in which he had been invited to write several review papers and give invited talks.

Lately he has been contracted to do research on several aspects of the fuel used in the PBMR.