一、前言高转换轻水堆是一种转换比达0.8—1.0的堆型。它具有比现有轻水堆转换比高的特点。发展高转换轻水堆的原因是:①能有效利用现有轻水堆中生产的钚;②有助于推迟快堆商用化计划。在钚的有效利用方面,高转换轻水堆的燃料采用富集度约12%的 PuO_2-UO_2,电功率为1000MW级核电站的堆芯初期钚装载量达8t,可大量集中使用钚燃料。由于转换比高,堆芯内可生成比轻水堆更多的钚,因此有人把高转换轻水堆称之为钚的” I. Introduction High conversion light water reactor is a conversion ratio of 0.8-1.0 heap type. It has a higher conversion ratio than the existing light water reactor. The reasons for the development of high conversion light water reactors are: ① effective use of plutonium produced in existing light water reactors; and ② delayed de-fast reactor commercialization. In terms of effective utilization of plutonium, the high conversion light water reactor uses PuO_2-UO 2 with an enrichment of about 12%, and an initial electrical power of 1000MW for plutonium loading of 8t, enabling a large concentration of plutonium fuel. Because of the high conversion ratio, more plutonium can be generated in the core than in the light water reactor, so some people refer to the highly converted light water reactor as "