Title: On-line Fission Gas Release Monitoring System in the High Flux Reactor Petten
Citation: 3rd International Confrence on Advancements in Nuclear Instrumentation Measurement Methods and their Applications p. 1-6
Publisher: IEEE
Publication Year: 2013
JRC N°: JRC79202
ISBN: 978-1-4799-1046-5
URI: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6727915
DOI: 10.1109/ANIMMA.2013.6727915
Type: Articles in periodicals and books
Abstract: For HTR fuel irradiation tests in the HFR Petten a specific installation was designed and installed dubbed the “Sweep Loop Facility” (SLF). The SLF is tasked with three functions, namely temperature control by gas mixture technique, surveillance of safety parameters (temperature, pressure, radioactivity etc.) and analysis of fission gas release for three individual capsules in two separate experimental rigs. The SLF enables continuous and independent surveillance of all gas circuits. The release of volatile fission products (FP) from the in-pile experiments is monitored by continuous gas purging. The fractional release of these FP, defined as the ratio between release rate of a gaseous fission isotope (measured) to its instantaneous birth rate (calculated), is a licensing-relevant test for HTR fuel. The developed gamma spectrometry station allows for higher measurement frequencies, thus enabling follow-up of rapid and massive release transients. The designed stand-alone system was tested and fully used through the final irradiation period of the HFR-EU1 experiment which was terminated on 18 February 2010. Its robustness allowed the set up to be used as extra safety instrumentation. This paper describes the gas activity measurement technique based on HPGe gamma spectrometry and illustrates how qualitative and quantitative analysis of volatile FP can be performed on-line.
JRC Directorate:Nuclear Safety and Security

Files in This Item:
There are no files associated with this item.

Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.