Abstract
This paper concerns the preliminary investigation of the thermal behaviour and of the afterheat removal capability of the water-cooled lithium-lead box-shaped DEMO blanket in case of Loss-Of-Coolant Accident (LOCA). The thermal behaviour of the outboard-segment first wall and breeder region has been determined in an hypothetical accidental situation where convection cooling of the outboard blanket is totally lost. The case of two separate water-cooling circuits has been considered, and three possible connection schemes have been analyzed. The minimum temperature increase has been obtained when a crossed inboard/outboard cooling-circuits connection is assumed (inboard segment-box and outboard breeder-box from one side, the reverse from the other side). In case of LOCA in the outboard breeder region, the obtained maximum temperature is 550 deg C reached after about 20 seconds. The corresponding thermal stresses remain below the allowed limit. On the contrary, if the LOCA happens in the outboard segment-box, the maximum temperature of 625 deg C is reached after 1 hour in the first wall and the thermal stresses are too high. Possible solutions are briefly discussed. A similar analysis has also been performed for a different water-cooled lithium-lead blanket concept, the cylindrical module concept. The comparison between the two concepts indicates
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Citation Formats
Giancarli, L, Proust, E, Mouquet, N, Salavy, J F, Hernot, M, and Franenberg, H W.
Thermal behaviour of the water-cooled lithium-lead box-shaped Demo blanket during a loss-of-coolant accident.
France: N. p.,
1992.
Web.
Giancarli, L, Proust, E, Mouquet, N, Salavy, J F, Hernot, M, & Franenberg, H W.
Thermal behaviour of the water-cooled lithium-lead box-shaped Demo blanket during a loss-of-coolant accident.
France.
Giancarli, L, Proust, E, Mouquet, N, Salavy, J F, Hernot, M, and Franenberg, H W.
1992.
"Thermal behaviour of the water-cooled lithium-lead box-shaped Demo blanket during a loss-of-coolant accident."
France.
@misc{etde_10154869,
title = {Thermal behaviour of the water-cooled lithium-lead box-shaped Demo blanket during a loss-of-coolant accident}
author = {Giancarli, L, Proust, E, Mouquet, N, Salavy, J F, Hernot, M, and Franenberg, H W}
abstractNote = {This paper concerns the preliminary investigation of the thermal behaviour and of the afterheat removal capability of the water-cooled lithium-lead box-shaped DEMO blanket in case of Loss-Of-Coolant Accident (LOCA). The thermal behaviour of the outboard-segment first wall and breeder region has been determined in an hypothetical accidental situation where convection cooling of the outboard blanket is totally lost. The case of two separate water-cooling circuits has been considered, and three possible connection schemes have been analyzed. The minimum temperature increase has been obtained when a crossed inboard/outboard cooling-circuits connection is assumed (inboard segment-box and outboard breeder-box from one side, the reverse from the other side). In case of LOCA in the outboard breeder region, the obtained maximum temperature is 550 deg C reached after about 20 seconds. The corresponding thermal stresses remain below the allowed limit. On the contrary, if the LOCA happens in the outboard segment-box, the maximum temperature of 625 deg C is reached after 1 hour in the first wall and the thermal stresses are too high. Possible solutions are briefly discussed. A similar analysis has also been performed for a different water-cooled lithium-lead blanket concept, the cylindrical module concept. The comparison between the two concepts indicates that their thermal behaviour in case of LOCA is very similar, although the cylindrical modules concept reaches slightly higher temperatures.}
place = {France}
year = {1992}
month = {Dec}
}
title = {Thermal behaviour of the water-cooled lithium-lead box-shaped Demo blanket during a loss-of-coolant accident}
author = {Giancarli, L, Proust, E, Mouquet, N, Salavy, J F, Hernot, M, and Franenberg, H W}
abstractNote = {This paper concerns the preliminary investigation of the thermal behaviour and of the afterheat removal capability of the water-cooled lithium-lead box-shaped DEMO blanket in case of Loss-Of-Coolant Accident (LOCA). The thermal behaviour of the outboard-segment first wall and breeder region has been determined in an hypothetical accidental situation where convection cooling of the outboard blanket is totally lost. The case of two separate water-cooling circuits has been considered, and three possible connection schemes have been analyzed. The minimum temperature increase has been obtained when a crossed inboard/outboard cooling-circuits connection is assumed (inboard segment-box and outboard breeder-box from one side, the reverse from the other side). In case of LOCA in the outboard breeder region, the obtained maximum temperature is 550 deg C reached after about 20 seconds. The corresponding thermal stresses remain below the allowed limit. On the contrary, if the LOCA happens in the outboard segment-box, the maximum temperature of 625 deg C is reached after 1 hour in the first wall and the thermal stresses are too high. Possible solutions are briefly discussed. A similar analysis has also been performed for a different water-cooled lithium-lead blanket concept, the cylindrical module concept. The comparison between the two concepts indicates that their thermal behaviour in case of LOCA is very similar, although the cylindrical modules concept reaches slightly higher temperatures.}
place = {France}
year = {1992}
month = {Dec}
}