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首页> 外文期刊>World Journal of Nuclear Science and Technology >Safe Controlled Storage of SVBR-100 Spent Nuclear Fuel in the Extended-Range Future
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Safe Controlled Storage of SVBR-100 Spent Nuclear Fuel in the Extended-Range Future

机译：SVBR-100乏核燃料在安全范围内的安全受控存储

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Experience of operating reactor facilities (RF) with lead-bismuth coolant (LBC) has revealed that it is possible to perform safe refueling in short terms if the whole core is replaced and a kit of the special refueling equipment is used. However, comparing with RFs of nuclear submarines (NS), in which at the moment of performance of refueling the residual heat release is small, at RF SVBR-100 in a month after the reactor has been shut down , at the moment of performance of refueling the residual heat release is about 500 kW. Therefore, it is required to place the spent removable unit (SRU) with spent fuel subassemblies (SFSA) into the temporal storage tank (TST) filled with liquid LBC, in which the conditions for coolant natural circulation (NC) and heat removal via the tank vessel to the water cooling system are provided. After the residual heat release has been lowered to the level allowing transportation of the TST with SRU in the transporting-package container (TPC), it is proposed to consider a variant of TPCs transportation to the special site . On that site after the SRU h as been reloaded into the long storage tank (LST) filled with quickly solidifying liquid lead, the TPCs can be stored during the necessary period. Thus, the controlled storage of LSTs is realized during several decades un till the time when SNF reprocessing and NFC closing are becoming economically expedient. On that storage, the four safety barriers are formed on the way of the release of radioactive products into the environment, namely: fuel matrix, fuel element cladding, solid lead and steel casing of the LST.
机译：使用铅铋冷却剂（LBC）在反应堆设施（RF）上运行的经验表明，如果更换整个堆芯并使用一套专用加油设备，则可以在短期内进行安全的加油。但是，与核潜艇的RF相比，核反应堆关闭后一个月的RF SVBR-100中，在执行加油操作时，残留的热量释放很小。加油时，剩余热量释放约为500 kW。因此，需要将带有乏燃料组件（SFSA）的乏可拆卸单元（SRU）放入装有液体LBC的临时储罐（TST）中，在该储罐中，冷却剂自然循环（NC）和通过热交换器排出热量的条件提供了到水冷却系统的储罐容器。在将残余热量释放降低到允许将TST和SRU运送到运输包装容器（TPC）中的水平后，建议考虑将TPC运送到特定地点的一种变型。在将SRU h重新装载到装有快速凝固的液态铅的长储罐（LST）中之后，可以在该站点上在必要的时间内存储TPC。因此，直到SNF再处理和NFC关闭在经济上变得合宜之前的几十年，才实现LST的受控存储。在该储存库上，在放射性产品释放到环境中的途中形成了四个安全屏障，即：LST的燃料基体，燃料元件包壳，固体铅和钢制外壳。

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