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Fusion Science and Technology
Latest News
Framatome signs contracts with Sizewell C
French nuclear developer Framatome is slated to deliver key equipment for Sizewell C Ltd.’s two large reactors planned for the United Kingdom’s Suffolk coast.
The agreement, reportedly worth multiple billions of euros, was announced this week and will involve Framatome from the design phase until commissioning. The company also agreed to a long-term fuel supply deal. Framatome is 80.5 percent owned by France’s EDF and 19.5 percent owned by Mitsubishi Heavy Industries.
Alain Godot, Sébastien Colas, Jean-Charles Hubinois
Fusion Science and Technology | Volume 54 | Number 1 | July 2008 | Pages 186-188
Technical Paper | Tritium Measurement | doi.org/10.13182/FST08-A1792
Articles are hosted by Taylor and Francis Online.
The measurement of the amount of impurities in tritiated gases can be achieved by means of mass spectrometry or gas phase chromatography.A growing number of disadvantages associated to the "life expectancy" of the mass spectrometer and its tricky maintenance (when enclosed in a gloves box) have led us to acquire a micro gas phase chromatograph. This device is based on a modular concept with the injector, the column and the detector packed in a compact unit which is easy to replace. Thanks to constant improvement in the field of capillary column, new micro chromatographs are now able to perform measurement in absence of pre-column and presence of argon instead of nitrogen as a carrier gas. Of importance, this new apparatus allow better performances (running time: 1 m 30 sec, limit of detection: < 10 ppm).However, in normal use, this apparatus requires 800 millibar in the inlet, a pressure that doesn't match with the feature of our process gas. To overcome this inconvenience, we have developed an automatic functioning system with a bellows that samples and compresses the gas to pressures compatible with the micro gas chromatograph.The apparatus and the experimental procedures will be presented as well as experimental performances (reproducibility, detection limits. . .) for some impurities such as nitrogen, oxygen and helium.