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05.03.2019

IVG.1М Reactor

Water-cooled IVG.1M reactor was established in 1990 as a result of the high temperature gas-cooled IVG.1 reactor upgrading, which was commissioned in 1975 and initially devoted to test fuel elements and FAs of NRE. In the course of upgrading, gas-cooled reactor core was replaced with water-cooled one.  

Technical specifications of the IVG.1M reactor

  • Designed thermal output …………………………………….. 72 MW
  • Core effective diameter …………………………..………….. 548 mm
  • Core height……………… …………………………………… 800 mm
  • U-235 charge in the core …………………………………….. 4.6 kg
  • Thermal neutron flux density ………………………………… 3.5х1014 n/cm2s
  • Water flow through the reactor……………………………….. up to 380 kg/s
  • Peak water temperature at the reactor outlet …………………. 95°С
ИВГ.1М РеакторыПультовая реактора ИВГ.1М надо перевести

The main scope of testing (relevant to NRE) was implemented in IVG.1M reactor, where four pilot cores have been tested, equipped with technological channels of various structural modifications.      

The results (full preservation of integrity and almost complete retaining of original strength of fuel elements) demonstrated high performance of NRE’s standard fuel elements.

ЯЗҚ штатты твэлдердің бастапқы күйіОтобранные из зон АЗ различных НСФрагмент канала КЭТ в исходном состоянииПосле испытаний в 12 пусках реактора ИВГ.1М

The major research lines ongoing at the IVG.1M reactor to date are as follows: 

  • studying permeability parameters and hydrogen isotopes accumulation in structural materials under reactor irradiation at the “Liana” test-bench;    
  • studying the behavior of a fusion reactor first wall materials under emergency situation simulation;
  • radiation effect simulation on biological objects;
  • conversion of the IVG.1M reactor to low-enriched uranium fuel and many other things.