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Apr 19 – 22, 2022
Vienna, Austria
Europe/Vienna timezone
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Analysis of sodium fire accident after upgrade of ventilation system of primary loop’s corridor

Apr 20, 2022, 1:40 PM
Vienna, Austria

Vienna, Austria

POSTER Track 2. Fast Reactor Safety Poster Session


Mrs jiayin yang


CEFR is a fast neutron experimental reactor with the coolant of liquid metal sodium. The primary loop’s corridor of sodium purification system, as we know the name of room 309/1, is one of the sodium aerosol containment chambers, where laid out with many sodium pipes of high temperature, especially the pipe with high-level radioactive sodium inside which is come from reactor main vessel. In the event that this pipe is broken, the spray of hot sodium can burn and then produce sodium fire, under certain conditions, a kind of continuous spray sodium fire, which affects the pressure and gas temperature of room and the temperature of internal structure etc a lot. In order to lower the temperature of room 309/1, the ventilation system of this room is upgraded by means of increasing the air intake volume and exhaust air volume, and this kind of upgrade should affect thermodynamic results of sodium fire accident. FEUMIX is used to calculate the results of spray sodium fire accident of the primary loop’s corridor after upgrade of ventilation system, and the results is compared with the results of the same room before the upgrade of ventilation system. It appears that the upgrade of ventilation system of primary loop’s corridor can relieve the consequences of spray sodium fire partly.

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Affiliation/Organization china institute of atomic energy
Country/Int. organization China

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