Insights into potential consequences of fusion hypothetical accident, lessons learnt from the former fission accidents

Nie, Baojie; Ni, Muyi; Liu, Jinchao; Zhu, Zhongkui; Zhu, Zhenxi; Li, Feng‐Chen

doi:10.1016/j.envpol.2018.11.075

Cited by 13 publications

(2 citation statements)

References 41 publications

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“…The results are shown in Figure 4. [49][50][51][52][53] For CFETR, more R&D should be performed to validate tritium retention data and to develop new techniques with lower tritium permeation and retention in materials. On the other hand, if some designed targets failed, for example, burning availability, which is a key issue for the future fusion reactors, the required TBR would be increased significantly.…”

Section: Required Tbr For Tritium Self-sufficiencymentioning

confidence: 99%

“…Lots of previous studies also showed concerns about a possible quite tritium retention which would bring great challenges for both the tritium selfsufficiency and the personal safety. [49][50][51][52][53] For CFETR, more R&D should be performed to validate tritium retention data and to develop new techniques with lower tritium permeation and retention in materials.…”

Section: Required Tbr For Tritium Self-sufficiencymentioning

confidence: 99%

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Insights into fuel start‐up and self‐sufficiency for fusion energy: The case of CFETR

Nie¹,

Ran

Zeng

et al. 2019

Energy Science & Engineering

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Commercial tritium resources available are too scarce to fully supply the future fusion reactors after International Thermonuclear Experimental Reactor (ITER). Tritium self‐sufficiency, ITER fails to fully validate, was regarded as one of the most important issues needed to be solved in the pathway of achieving fusion energy. After ITER, several concepts of fusion engineering test reactors and fusion demonstration reactors have been proposed worldwide, for example, Chinese Fusion Engineering Test Reactor (CFETR), Fusion Nuclear Science Facility (FNSF), DEMOnstration fusion reactor (DEMO) in European Union and Korea. CFETR is in the engineering design phase and would be hopefully completed around 2020. Tritium resources for the reactor start‐up and tritium self‐sufficiency are two primary issues besides the steady‐state operation for CFETR. The objectives of this work are as follows: (a) to introduce the preliminary fuel cycle concept and available tritium resources for CFETR, (b) to evaluate and discuss the tritium demand for CFETR start‐up (phase I: 200 MW) and the feasibility of DD start‐up, (c) to identify the possible pathways to tritium self‐sufficiency through sensitivity analysis based on the design baseline of CFETR, (d) to evaluate the consequences in case of failing tritium self‐sufficiency, and (e) to identify future R&D needed for tritium self‐sufficiency. It is expected to give insights into the question on how to start the reactor in a more economical way, into the feasibility of tritium self‐sufficiency, and into the question on what will happen in case of failing tritium self‐sufficiency.

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