Mr Huacai Wang (China Institute of Atomic Energy)
9/22/14, 1:30 PM
In order to investigate the behaviour of PWR fuel rods, eight fuel rods extracted from reactor of Qinshan NPP(QNPP) were examined at the hot cell facility ofChina Institute of Atomic Energy (CIAE) in Beijing. The maximum burnup was about 40 GWD/TU. This paper presents the results of non-destructive examination. The results included: 1) Status of cladding surface, 2) cladding integrity, 3)...
7. Determination of hydrogen concentration in Zircaloy cladding using hot vacuum extraction method with two-step heating
Mr Hiroki Obata (Japan Atomic Energy Agency)
9/22/14, 2:00 PM
The amount of hydrogen absorbed to the fuel cladding increases by extended burnup fuel. The absorbed hydrogen that exceed solid solubility limit precipitates as the hydride phase. The high concentration of hydride causes the fuel cladding embrittlement which might become the origination of fractures of the cladding. Therefore, it is important to measure the hydrogen content in the cladding to...
17. Online measurement of fission products release during nuclear fuel annealing : A mass spectrometry approach
Ms Elodie GUIGUES (LISA)
9/22/14, 2:30 PM
In order to increase fuel rod performance, the basic mechanisms that promote gas (i.e. He, H2, Kr and Xe) release from irradiated nuclear fuels must be studied. In this context, the CEA fuel study department at Cadarache decided to improve its experimental facility devoted to fuel behaviour under thermal transient by modifying the existing annealing device, called MERARG-II, to extend the...
44. The CEA Nano-characterization platform for irradiated materials of the LECI Nuclear Material Department
Benedicte VERHAEGHE (CEA-Saclay)
9/22/14, 3:30 PM
Introduction The Nuclear Material Department (DMN) of CEA Saclay is invested in a new nano-characterization platform for irradiation effects analysis. It is composed of a nuclearized Atom Probe Tomography (APT), a Transmission Electron Microscope (TEM), a high resolution Scanning Electron Microscope (SEM) and a Focused Ion Beam (FIB) microscopes coupled with a SEM...
Dr Heather Chichester (Idaho National Laboratory)
9/22/14, 4:00 PM
The Gas Assay, Sample and Recharge (GASR) system at the Hot Fuel Examination Facility (HFEF) at Idaho National Laboratory is used to puncture fuel elements, collect gas samples for analysis, and determine the free volume in a fuel element. This process is used to sample and determine fission gas release from irradiated fuel experiments. Accurate knowledge of the GASR system component...
Dr Douglas Burkes (Pacific Northwest National Laboratory)
9/22/14, 4:30 PM
Monolithic uranium-molybdenum (U-Mo) has been proposed as one fuel design capable of converting some of the world’s highest power research reactors from using high-enriched uranium (HEU) to low enriched uranium (LEU) fuel. One aspect of the fuel development and qualification process is to demonstrate the extent of fission product release from the fuel under anticipated service environments. ...
Mr Liang Ren (Nuclear Power Institute of China)
9/22/14, 5:00 PM
The poolside inspection technology is introduced through the underwater inspection of pressurized water reactor fuel assembly and each inspection method is discussed and analyzed. This technology mainly including visual testing, dimension measurement and eddy oxide measurement. The results show that the surface state, irradiation growth, and oxide layer thickness of pressurized water reactor...