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Received October 22, 2004
Accepted December 1, 2004
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삼중수소 저장용기의 성능평가
Performance Test of the Tritium Storage Vessel
한국원자력연구소, 305-353 대전시 유성구 덕진동 150
Korea Atomic Energy Research Institute, 150, Duckjin-dong, Yusong-gu, Daejon 305-353, Korea
swpaek@kaeri.re.kr
Korean Chemical Engineering Research, December 2004, 42(6), 771-775(5), NONE Epub 11 January 2005
Abstract
월성원자력 발전소의 감속재와 냉각재로 사용되는 중수 중의 삼중수소를 제거하기 위한 삼중수소제거설비(tritiumremoval facility)가 설계 건설 중이다. 이 시설로부터 99% 이상의 순도인 삼중수소가 회수되며, 장기적인 저장을 위하여 안전하게 포장되어야 한다. 삼중수소는 기체 누설의 우려로 인해 고체 금속 tritide의 형태로 포장된다. 삼중수소 고정화 물질로써 티타늄 스폰지가 선정되었다. 본 연구에서는 월성 삼중수소제거설비에서 사용하기 위한 삼중수소 저장 용기의 개발을 위해 시험용 저장용기를 설계, 제작하였다. 저장용기에는 850 g의 티타늄 스폰지를 충전하였으며 내부 용적은 약 6.5 ∫ 이었다. 매회 50kCi의 삼중수소에 해당하는 수소와 티타늄 스폰지의 수소화물 생성반응실험을 수행하였다. 10회 반응의 최종 실험 결과 저장된 수소의 양은 H/Ti=1.0이었으며 이는 500 kCi의 삼중수소에 해당한다. 따라서 이 실험 결과 제작된 삼중수소 저장용기는 월성 삼중수소제거설비의 사용조건에 충분함을 입증하였다.
A WTRF(wolsong tritium removal facility) is under construction at the Wolsong Nuclear Generating Station to recover the tritium from the heavy water. This facility is expected to produce a high purity tritium, greater than 99.0% isotopically pure. The recovered tritium must be packaged safely for long-term storage. Packaging tritium as a solid metal tritide is preferred over gaseous tritium due to the concern for the leakage. Titanium sponge has been selected as suitable material for tritium product immobilization. In this study, prototype tritium storage vessel has been designed and fabricated for the WTRF. The vessel contains 850 g of titanium sponge in 6.5 ∫ volume. The hydrogen gas (equivalent to 50 kCi of tritium) is reacted with titanium sponge in a batch. The final hydrogen content (H/Ti) of the titanium sponge was 1.0 after ten batch reactions and this amount of hydrogen is equivalent to 500 kCi of tritium. Therefore, it was shown that the prototype tritium storage vessel can be used sufficiently for the WTRF.
Keywords
References
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