Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8209160 | Applied Radiation and Isotopes | 2016 | 5 Pages |
Abstract
For early on-line detection of fuel rod failure, the key radionuclides useful in monitoring must leak easily from failing rods. Yield, half-life, and mass share of fission products that enter the primary coolant also need to be considered in on-line analyses. From all the nuclides that enter the primary coolant during fuel-rod failure, 135Xe and 88Kr were ultimately chosen as crucial for on-line monitoring of fuel-rod failure. A monitoring system for fuel-rod failure detection for pressurized water reactor (PWR) based on the LaBr3(Ce) detector was assembled and tested. The samples of coolant from the PWR were measured using the system as well as a HPGe γ-ray spectrometer. A comparison showed the method was feasible. Finally, the γ-ray spectra of primary coolant were measured under normal operations and during fuel-rod failure. The two peaks of 135Xe (249.8 keV) and 88Kr (2392.1 keV) were visible, confirming that the method is capable of monitoring fuel-rod failure on-line.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Guoxiu Qin, Xilin Chen, Xiaoqing Guo, Ning Ni,