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首页> 外文期刊>World Journal of Nuclear Science and Technology >Thermal Stress in HFEF Hot Cell Windows Due to an In-Cell Metal Fire
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Thermal Stress in HFEF Hot Cell Windows Due to an In-Cell Metal Fire

机译：单元内金属火灾导致HFEF热室窗口中的热应力

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This work investigates an accident during the pyrochemical extraction of Uranium and Plutonium from PWR spent fuel in an argon atmosphere hot cell. In the accident, the heavy metals (U and Pu) being extracted are accidently exposed to air from a leaky instrument penetration which goes through the cell walls. The extracted pin size pieces of U and Pu metal readily burn when exposed to air. Technicians perform the electrochemical extraction using manipulators through a 4 foot thick hot cell concrete wall which protects them from the radioactivity of the spent fuel. Four foot thick windows placed in the wall allow the technicians to visually control the manipulators. These windows would be exposed to the heat of the metal fire. This analysis determines if the thermal stress caused by the fire would crack the windows and if the heat would degrade the window seals allowing radioactivity to escape from the cell.
机译：这项工作调查了在氩气氛热室中从压水堆乏燃料中热化学提取铀和P过程中发生的事故。在事故中，被提取的重金属（U和Pu）意外地暴露于通过泄漏穿过仪器壁的泄漏仪器的空气中。暴露在空气中的U和Pu金属针状零件容易燃烧。技术人员使用操纵器通过4英尺厚的热室混凝土墙进行电化学提取，以保护其免受乏燃料的放射性影响。墙壁上有四英尺厚的窗户，使技术人员可以从视觉上控制操纵器。这些窗户将暴露于金属火的热中。该分析确定了由火引起的热应力是否会使窗户破裂，以及热量是否会使窗户的密封性降低，从而使放射性从电池中逸出。

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