The sampling and removal of tritiated water vapor in Taiwan research reactor

IF 3.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Progress in Nuclear Energy Pub Date : 2024-10-05 DOI:10.1016/j.pnucene.2024.105482

Jhih-Jhong Huang, Peng-Yu Chen

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引用次数: 0

Abstract

The Taiwan Research Reactor (TRR) is a research facility in Taiwan. TRR is a heavy water reactor designed based on the National Research Experiment (NRX) with output thermal power 40 MW. On January 3, 1973, it reach criticality. TRR had been operated for 15 years and was permanently shut down in early 1988. TRR uses heavy water moderation and light water cooling. Hence, some tritium was created when deuterium captures a neutron. The inside of the Calandria has been washed with clean water after shutdown. After draining the water in the interior, it is inevitable that some residual water would remain at the bottom of the Calandria. Air sampling and analysis techniques were employed to detect and quantify tritiated water vapor. The investigation of tritiated water vapor in the TRR Calandria proved potential tritium contamination risks. Adopting the vapor condensation drying technique proved effective in removing tritiated water vapor from the TRR Calandria. After the removal of tritiated water vapor, the air in the Calandria no longer contains rich concentration of tritiated water vapor. That will help to ensure a safe environment for decommissioning operations.

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台湾研究反应堆中三价水蒸气的取样和去除

台湾研究堆（TRR）是台湾的一个研究设施。台湾研究堆是根据国家研究实验（NRX）设计的重水反应堆，输出热功率为 40 兆瓦。1973 年 1 月 3 日，该反应堆达到临界状态。德黑兰研究堆运行了 15 年，于 1988 年初永久关闭。德黑兰研究堆使用重水调节和轻水冷却。因此，当氘俘获一个中子时会产生一些氚。关闭后，卡兰迪亚内部已被清水冲洗干净。在排干内部的水后，卡兰迪亚底部不可避免地会残留一些水。为检测和量化三价水蒸汽，采用了空气采样和分析技术。对德黑兰研究堆卡兰迪亚中氚化水蒸气的调查证明了潜在的氚污染风险。事实证明，采用蒸汽冷凝干燥技术可有效去除德黑兰研究堆卡兰迪瑞亚号中的氚水蒸汽。去除氚水蒸气后，卡兰迪亚的空气中不再含有高浓度的氚水蒸气。这将有助于确保退役作业的安全环境。

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来源期刊

Progress in Nuclear Energy 工程技术-核科学技术

CiteScore

5.30

自引率

14.80%

发文量

331

审稿时长

3.5 months

期刊介绍： Progress in Nuclear Energy is an international review journal covering all aspects of nuclear science and engineering. In keeping with the maturity of nuclear power, articles on safety, siting and environmental problems are encouraged, as are those associated with economics and fuel management. However, basic physics and engineering will remain an important aspect of the editorial policy. Articles published are either of a review nature or present new material in more depth. They are aimed at researchers and technically-oriented managers working in the nuclear energy field. Please note the following: 1) PNE seeks high quality research papers which are medium to long in length. Short research papers should be submitted to the journal Annals in Nuclear Energy. 2) PNE reserves the right to reject papers which are based solely on routine application of computer codes used to produce reactor designs or explain existing reactor phenomena. Such papers, although worthy, are best left as laboratory reports whereas Progress in Nuclear Energy seeks papers of originality, which are archival in nature, in the fields of mathematical and experimental nuclear technology, including fission, fusion (blanket physics, radiation damage), safety, materials aspects, economics, etc. 3) Review papers, which may occasionally be invited, are particularly sought by the journal in these fields.