Fission Product Monitoring and Release Data for the Advanced Gas Reactor -1 Experiment

Conference · Fri Oct 01 04:00:00 EDT 2010

OSTI ID:1009169

Scates, Dawn M; Walter, John B; Harp, Jason M; Drigert, Mark W; Reber, Edward L

The AGR-1 experiment is a fueled multiple-capsule irradiation experiment that was irradiated in the Advanced Test Reactor (ATR) from December 26, 2006 until November 6, 2009 in support of the Very High Temperature Reactor (VHTR) Technology Development Office (TDO) Fuel Development and Qualification program. An important measure of the fuel performance is the quantification of the fission product releases over the duration of the experiment. To provide this data for the inert fission gasses(Kr and Xe), a fission product monitoring system (FPMS) was developed and implemented to monitor the individual capsule effluents for the radioactive species. The FPMS continuously measured the concentrations of various krypton and xenon isotopes in the sweep gas from each AGR-1 capsule to provide an indicator of fuel irradiation performance. Spectrometer systems quantified the concentrations of Kr-85m, Kr-87, Kr-88, Kr-89, Kr-90, Xe-131m, Xe-133, Xe 135, Xe 135m, Xe-137, Xe-138, and Xe-139 accumulated over repeated eight hour counting intervals.-. To determine initial fuel quality and fuel performance, release activity for each isotope of interest was derived from FPMS measurements and paired with a calculation of the corresponding isotopic production or birthrate. The release activities and birthrates were combined to determine Release-to-Birth ratios for the selected nuclides. R/B values provide indicators of initial fuel quality and fuel performance during irradiation. This paper presents a brief summary of the FPMS, the release to birth ratio data for the AGR-1 experiment and preliminary comparisons of AGR-1 experimental fuels data to fission gas release models.

• Research Organization: Idaho National Laboratory (INL)
• Sponsoring Organization: DOE - NE
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1009169
• Report Number(s): INL/CON-10-17996
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
Advanced Gas Reactor
FISSION
FISSION PRODUCT RELEASE
FISSION PRODUCTS
Fission Product Monitor
IRRADIATION
ISOTOPES
KRYPTON
MONITORING
MONITORS
NGNP+TDO+VHTR+R&D+Fuel+AGR-1+AGR-2+Irradiation+Fis
PERFORMANCE
PRODUCTION
Release to Birth Ratio
SPECTROMETERS
TEST REACTORS
TRISO
VHTR
XENON ISOTOPES