Overview of tritium safety studies in Japan

Tanaka, Satoru; O’hira, Shigeru; Ichimasa, Yusuke

doi:10.1016/s0920-3796(02)00240-5

Cited by 3 publications

(2 citation statements)

References 62 publications

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“…The concept of 'non-radioactive' waste (i.e. it is radioactive but the level is very low) is critically considered in a report 279 from the Lawrence Livermore laboratory in the USA and the safety problems associated with working with tritium are discussed 280 in a recent Japanese publication.…”

Section: Safetymentioning

confidence: 99%

28 Radiochemistry

Urch

2004

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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Section: Safetymentioning

confidence: 99%

28 Radiochemistry

Urch

2004

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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“…The de-tritiation systems are designed so that the gaseous and liquid tritium releases to the environment are below 10 Sv per year [1,3]. There is an extended literature about the possible consequences of tritium release from fusion reactors [4][5][6][7]. Although the possibility of an accidental release of large amounts of tritium that can affect wide areas around the ITER complex is quite low, the assessment of tritium background values, not only in the vicinity but as well as further away is a necessity.…”

Section: Introductionmentioning

confidence: 99%

Assessment of tritium levels in rivers and precipitation in north-western Greece before the ITER operation

Stamoulis

Karamanis

Ioannides

2011

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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Overview of tritium safety studies in Japan

Cited by 3 publications

References 62 publications

28 Radiochemistry

28 Radiochemistry

Assessment of tritium levels in rivers and precipitation in north-western Greece before the ITER operation

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

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