Chemical Forms of Important Fission Products in Primary Circuit of HTR-PM under Conditions of Normal Operation and Overpressure and Water Ingress Accidents: A Study with a Chemical Thermodynamics Approach

Table 2

Parameters of fuel particles.

Parameter	Normal data
Diameter of fuel particle	500 μm
Thickness of buffer layer	95 μm
Thickness of OPyC	40 μm
Thickness of iPyC	40 μm
Thickness of SiC layer	35μm
Failure fraction of TRISO at objective burn-up	2.00E-04
Natural uranium contamination of fuel elements	7.00E-07