Reliability evaluation of integrated detritiation system for fusion reactors based on DBDT approach

Ge, Daochuan; Chen, Shanqi; Chen, Chao; Wang, Zhen; Chen, Zhibin; Wang, Fang

doi:10.1016/j.fusengdes.2020.111872

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…An S-DS mainly consists of air conditioning systems (HVACs) and atmosphere detriation systems (ADSs) [22,30]. The HVACs are mainly composed of blowers, heating, and cooling coils, pre-filters, and emergency isolation damper.…”

Section: Fault Trees Developmentmentioning

confidence: 99%

“…To perform accident sequence frequency quantification, available data from fusion experimental facilities and, where appropriate, from operational experience with fission NPPs and high-tech military and civilian systems were used [30][31][32][33]. Table 8 presents the component reliability parameters used to quantify the probabilities of the BEs of the FTs used to estimate the probability of the failure states of the ET headings in table 7.…”

Section: Reliability Datamentioning

confidence: 99%

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Probabilistic risk assessment model for released tritium into the environment for CFETR

Liang

Xu²,

Peng³

2022

Nucl. Fusion

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The China Fusion Engineering Test Reactor (CFETR) is the next facility in the Chinese roadmap to realize sustainable-clean fusion energy. Because of the large tritium inventory of the CFETR, safety analyses are necessary. During the current design phase of the CFETR, performing the risk analysis of tritium released into the environment could reveal the design weaknesses and indicate improvements aimed at tritium risk reduction but also form a part of the licensing process for future CFETR construction and operation. Several CFETR safety analyses using deterministic approaches have been conducted, but relatively few studies based on probabilistic approaches are currently available. In this paper, a probabilistic risk assessment (PRA) model for tritium release into the environment for CFETR was proposed, in which the frequency and the radioactivity of the released tritium in accident sequences are considered. The event tree/fault tree (ET/FT) method was applied to investigate primary factors contributing to the tritium release into the environment and to estimate the frequency of accident sequences. We presented a model for preliminary and rapid assessment of the radioactivity of released tritium in accident sequences and developed a calculation code. The application process and validity of the model were demonstrated through the assessment of tritium risk of the CFETR for selected postulated initiating events.

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Section: Fault Trees Developmentmentioning

confidence: 99%

Section: Reliability Datamentioning

confidence: 99%