Skip navigation
Nuclear Safeguards Education Portal
  

Special fissionable material

There are several isotopes that the IAEA considers Special Fissionable Material:

  • plutonium-239
  • uranium-233
  • uranium enriched in the isotopes 235 or 233
  • any material containing one or more of the foregoing
  • such other fissionable material as the Board of Governors shall from time to time determine

However, the term 'special fissionable material' does not include source material (taken from INFCIRC 153* & 540*).