Operation of the Room Air Tritium Removal System at the Tritium Systems Test Assembly

Carlson, R.V.; Damiano, F.A.; Binning, K. E.

doi:10.13182/fst85-a24607

Cited by 5 publications

(1 citation statement)

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“…In terms of tritium release experimental study, a great deal of research studies about intentional tritium release experiments and numerical simulation of three-dimensional fluid have been carried out aiming at nuclear fusion tritium safety. From the 1980s to the early 21st century, Los Alamos National Laboratory (LANL) built a Tritium Systems Test Assembly (TSTA) (Carlson et al, 1985;Hayashi et al, 1998;Kobayashi et al, 2008) and the Japan Atomic Energy Research Institute (JAERI) built a Caisson Assembly for Tritium Safety (CATS) (Hayashi et al, 2000;Iwai et al, 2001;Yasunori et al, 2001;Cristescu et al, 2005;Munakata et al, 2010) to carry out a series of experimental studies on intentional tritium release behavior and tritium removal performance. However, the ventilation scene in the experiment is single, and there are few studies on the influencing factors of tritium removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis on Emergency Treatment Effect of Tritium Leakage Accident in the Nuclear Reactor Under Different Ventilation Conditions

Cai

Xiao

et al. 2022

Front. Energy Res.

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The high-pressure tritium leakage is a typical nuclear leakage accident, which can cause radioactive harm. The study aims at the tritium leakage problem in the high-pressure vessel of a nuclear reactor, installing a typical tritium leakage scenario and establishing the thermodynamic model of tritium leakage behavior which describes the transient process of tritium leakage. To analyze the effect of different ventilation scenes on tritium removal efficiency, the study sets up six different ventilation scenes and carries out the numerical simulation of tritium migration and mixing behavior based on Fluent. The result shows that different ventilation scenes will form different swirl distributions; the more complex the swirl distribution is, the faster the tritium concentration decreases. The shortest time required to decrease tritium concentration in space to the background level at the ventilation rate of 1 m3 s−1 is about 830 s and the longest time is about 1100 s. The overall tritium removal efficiency can be effectively improved when the swirl concentration distribution area is opposite to the exhaust outlet position. The setting method of ventilation is optimized, which provides technical support for the emergency treatment of tritium leakage accidents in the room.

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Section: Introductionmentioning

confidence: 99%

Analysis on Emergency Treatment Effect of Tritium Leakage Accident in the Nuclear Reactor Under Different Ventilation Conditions

Cai

Xiao

et al. 2022

Front. Energy Res.

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Behavior of tritium in the TSTA test cell combined with operation of the Experimental Tritium Cleanup (ETC) system

Willms

Kobayashi

Iwai

et al. 2002

Fusion Engineering and Design

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Study on emergency ventilation optimization method for tritium leakage accident of high-pressure storage vessel

Cai

et al. 2022

AIP Advances

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In the process of tritium storage, the high-pressure storage vessel may be damaged due to accidental conditions, such as impact or drop, which results in tritium leakage. The tritium gas will be released and diffused into the space immediately, which inevitably causes radioactive hazards to personnel and the environment. Ventilation is considered to be the best emergency treatment method for a tritium leakage accident. According to the characteristics of fixed tritium amount and rapid release of tritium in the tritium leakage accident of the high-pressure storage vessel, the numerical simulation of high-pressure released tritium behavior in a confined space is carried out based on Fluent and compared with CATS test data. The error is no more than 5%. The ventilation conditions are optimized according to different ventilation positions and different ventilation rates. It is founded that the tritium removal efficiency when the vent is set on the roof is 30% higher than that on the side wall. The tritium concentration in a confined space can be reduced to the background level after ventilation for 30 min at a rate of 0.5 m3 s−1. The optimal recovery time of the environment is given, which provides technical support for the emergency treatment of the tritium leakage accident of the high-pressure storage vessel.

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Operation of the Room Air Tritium Removal System at the Tritium Systems Test Assembly

Cited by 5 publications

References 0 publications

Analysis on Emergency Treatment Effect of Tritium Leakage Accident in the Nuclear Reactor Under Different Ventilation Conditions

Analysis on Emergency Treatment Effect of Tritium Leakage Accident in the Nuclear Reactor Under Different Ventilation Conditions

Behavior of tritium in the TSTA test cell combined with operation of the Experimental Tritium Cleanup (ETC) system

Study on emergency ventilation optimization method for tritium leakage accident of high-pressure storage vessel

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