• 제목/요약/키워드: TROI Experiments

검색결과 17건 처리시간 0.028초

TROI 실험결과를 활용한 TEXAS-V 코드 검증 및 원자로 노외증기폭발 하중평가 (The Verification of TEXAS-V code for TROI Experimental Results and the Evaluation of the Ex-vessel Steam Explosion Load)

  • 박익규;김종환;민병태;홍성호;김희동;홍성완
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2007년도 춘계학술대회B
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    • pp.3485-3490
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    • 2007

  • The TEXAS-V code tuned for TROI-13 was used for analyzing the parametric findings in TROI experiments. The calculations on the melt composition are relatively similar to the TROI experimental results. The water depth effect in TEXAS-V code seems to be consistent with TROI experiments in some degree. The water area effect of TEXAS-V calculations seems not to be harmonious to that in TROI experiments. This seems to indicate that TEXAS-V as 1-dimensional code or as the numerical steam explosion has a limitation on estimating area effect. Thus, TEXAS-V tuned for TROI-13 seems to have an ability to estimate the parametric effect of TROI experiments. The evaluated TEXAS-V was used for estimating the ex-vessel steam explosion load. The calculated explosion pressure and load were about 40 MPa and 75 kPa.sec, which are not much threatening level for containment integrity, but are arguable value for the integrity.

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TROI 실험결과를 활용한 원자력발전소 중대사고시 노외 증기폭발 하중평가 (An Evaluation of the Ex-vessel Steam Explosion Load Against TROI Experimental Results)

  • 박익규;김종환;민병태
    • 대한기계학회논문집B
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    • 제33권8호
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    • pp.622-628
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    • 2009

  • The TEXAS-V code tuned for TROI-13 was used for analyzing the parametric findings in TROI experiments. The calculations on the melt composition are relatively similar to the TROI experimental results. The water depth effect in TEXAS-V code seems to be consistent with TROI experiments in some degree. The water area effect of TEXAS-V calculations seems not to be harmonious to that in TROI experiments. This seems to indicate that TEXAS-V as 1-dimensional code or as the numerical steam explosion has a limitation on estimating area effect. Thus, TEXAS-V tuned for TROI-13 seems to have an ability to estimate the parametric effect of TROI experiments. The evaluated TEXAS-V was used for estimating the ex-vessel steam explosion load. The calculated explosion pressure and load were about 40 MPa and 75 kPa.sec, which are not much threatening level for containment integrity.

  • https://doi.org/10.3795/KSME-B.2009.33.8.622 인용 PDF KSCI

금속이 함유된 코륨을 이용한 TROI 증기폭발 실험 (The TROI Steam Explosion Experiments Using Metal-added Corium)

  • 김종환;민병태;홍성완;홍성호;박익규;송진호;김희동
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2007년도 춘계학술대회B
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    • pp.3479-3484
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    • 2007

  • Two steam explosion experiments were performed in the TROI facility by using metal-added molten corium (core material) which is produced during a postulated severe accident in the nuclear reactor. A triggered steam explosion occurred in a case, but no triggered steam explosion did in the other case. The dynamic pressure and the dynamic load measured in the former experiment show a stronger explosion that those performed previously with oxidic corium. A steam explosion is prohibited when the melt temperature is low, because the melt is easily solidified to prevent a liquid-liquid interaction.

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원자로에서 중대사고시 냉각수의 수심과 용융물 성분이 증기폭발에 미치는 영향 (The Influence of Water Depth and Melt Composition on a Steam Explosion in Severe Accidents in a Nuclear Reactor)

  • 김종환;박익규;홍성완;민병태;송진호;김희동
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2003년도 추계학술대회
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    • pp.414-419
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    • 2003

  • In the recent TROI experiments, melts of zirconia and two different compositions of corium were used to observe the occurrence of a steam explosion when it came into contact with water at two different depths. The compositions of the corium were 70 : 30 and 80 : 20 in weight percent of $UO_{2}$ and $ZrO_{2}$, and the mass of the corium was about 10kg. The depth of water in the interaction vessel was 67cm and 130cm. A steam explosion did not occur in the interaction between 80 : 20 corium melt and water at 130cm depth, while steam spikes were observed in the interactions between corium melts of two different compositions and water at 67cm depth. A strong steam explosion occurred in the interaction between 5.43kg of zirconia melt and water at 67cm depth. This fact shows that the explosivity of zirconia is much greater than that of corium.

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원자로 노심용융물의 성분비 변화가 증기폭발에 미치는 영향 (An Influence of Corium Composition Variations on a Spontaneous Steam Explosion in Severe Accidents in a Nuclear Reactor)

  • 김종환;박익규;홍성완;민병태;송진호;김희동
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2004년도 춘계학술대회
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    • pp.2041-2046
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    • 2004

  • Recently series of steam explosion experiments have been performed in the TROI facility to identify the influence of corium compositions on the occurrence of a spontaneous steam explosion varying corium melt composition. The compositions of the corium were 0 : 100, 50 : 50, 70 : 30, 80 : 20 and 87 : 13 at weight percent of $UO_2$ to $ZrO_2$, and the mass of the corium was about 10kg. Corium melt at 0 : 100 weight percent (pure zirconia) caused a strong spontaneous steam explosion, and melt at 70 : 30 weight percent(eutectic corium) led to a weak steam spike, while melts at other compositions did not result in spontaneous steam explosions, when they came into contact with 67cm deep water pool at room temperature. It seems that the explosivity of pure zirconia is stronger than that of corium at other compositions and a steam explosion is not likely to occur with corium melts at non-eutectic compositions which are included in mushy zone region.

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