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논문 기본 정보

자료유형
학술대회자료
저자정보
Sung-Deok Hong (한국원자력연구원) Nam-il Tak (한국원자력연구원) Byung-Ha Park (한국원자력연구원) Eung-Seon Kim (한국원자력연구원) Min-Hwan Kim (한국원자력연구원)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2019년 학술대회
발행연도
2019.11
수록면
888 - 892 (5page)

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초록· 키워드

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Metallic fission product (FP), such as silver, cesium, and strontium, can be released from defected nuclear fuel of high temperature gas-cooled reactor (HTGR). These metals may subsequently diffuse from the fuel, become plate-out on the internal walls of primary components, leading to the introduction of radioactive impurities into many components of the reactor. Each material, each FP and each of its compound form have different kinetics and so, potentially, very large number of experiments are necessary. It should be understood that the empirical knowledge of FP alloy interactions makes no distinction between the different adsorption/absorption/reaction mechanisms.
KAERI prepare a lab-scale apparatus to study plate-out characteristics of metallic FP. The apparatus is an out-of-pile test device and is able to simulate HTGR core temperature at helium flow condition or argon flow condition. The apparatus is an open loop that composed of a gas supply system, a preheater, a FP heater, a test section, an air cooler and two kind of filters. We invented multi-couponed tube type test section(MCTS) to get many test coupons with various temperature conditions. It is confirmed from a strontium metal test. Strontium in the crucible is entrained by argon gas flow and plated out on the MCTS successfully during 6.0 hours 900 ℃ steady-state operation of the experimental apparatus.

목차

Abstract
1. Introduction
2. FP interactions with components wall
3. Experimental Apparatus
4. Experiments
5. Results and Discussion
6. Conclusion
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