High Radiation Environment Nuclear Fragment Separator Magnet

In all engineering applications, design and materials together determine the functionality and reliability of a device. This is particularly important in nuclear systems where the materials are pushed to their limits and phenomena not present anywhere else occur. In nuclear systems a combination of high temperature and pressure, stress, corrosive environment and high radiation environment combined causes significant materials challenges. Majority of commercial LWRs today are licensed for 40 years of operation, but many of them undergo lifetime extension to 60 or possibly 80 years. Materials degradation has always been a significant issue. However, due to the lifetime plant extension, finding materials that could sustain prolonged exposure to these extreme conditions has become a significant problem. In addition to the materials challenges in current LWRs, advanced reactors usually deal with even more difficult issues due to their operational requirements. Unusual heat transport media, such as liquid metals, liquid salts or other types of coolants, lead to a whole new set of material challenges. While corrosion has been the main issue, much higher operating temperatures create additional difficulties. In this paper, we present an overview of materials issues for current and advanced nuclear reactor designs.

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Development of Remote Sensing Technique Using Radiation Resistant Optical Fibers under High-Radiation Environment

Proceedings of the Second International Symposium on Radiation Detectors and Their Uses (ISRD2018) ◽

10.7566/jpscp.24.011038 ◽

2019 ◽

Author(s):

Chikara Ito ◽

Hiroyuki Naito ◽

Takashi Ishikawa ◽

Keisuke Ito ◽

Ikuo Wakaida

Keyword(s):

Remote Sensing ◽

Optical Fibers ◽

Radiation Environment ◽

High Radiation ◽

Remote Sensing Technique ◽

Radiation Resistant

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Development of Robots Working in High Radiation Environment for Decommissioning Fukushima Daiichi Nuclear Power Plant

The Proceedings of the National Symposium on Power and Energy Systems ◽

10.1299/jsmepes.2018.23.a112 ◽

2018 ◽

Vol 2018.23 (0) ◽

pp. A112

Author(s):

Takuya FUKUMOTO ◽

Kouji ISHIZAWA ◽

Satoshi OKADA ◽

Katsuhiko HIRANO ◽

Kouichi KUROSAWA ◽

...

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Radiation Environment ◽

High Radiation ◽

Fukushima Daiichi

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Performance and operation experience of the ATLAS Semiconductor Tracker

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194514602956 ◽

2014 ◽

Vol 31 ◽

pp. 1460295

Author(s):

Zhijun Liang ◽

Keyword(s):

Hadron Collider ◽

High Energy ◽

Radiation Environment ◽

High Luminosity ◽

Track Reconstruction ◽

High Radiation ◽

Leakage Currents ◽

On Line ◽

And Performance ◽

The Ideal

We report on the operation and performance of the ATLAS Semi-Conductor Tracker (SCT), which has been functioning for 3 years in the high luminosity, high radiation environment of the Large Hadron Collider at CERN. We also report on the few improvements of the SCT foreseen for the high energy run of the LHC. We find 99.3% of the SCT modules are operational, the noise occupancy and hit efficiency exceed the design specifications; the alignment is very close to the ideal to allow on-line track reconstruction and invariant mass determination. We will report on the operation and performance of the detector including an overview of the issues encountered. We observe a significant increase in leakage currents from bulk damage due to non-ionizing radiation and make comparisons with the predictions.

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