Abstract The CABRI International Program (CIP) tests irradiated UO2 or MOX fuels submitted to Reactivity Initiated Accidents (RIA) representative power pulses in prototypical PWR thermal-hydraulic conditions. CIP is managed by The Institut de Radioprotection et de Surete Nucleaire (IRSN) within a OECD/NEA framework. Experiments are conducted in the CABRI reactor operated by CEA. For CIP, CABRI benefits from a new pressurized water loop. An important refurbishment program enhanced the facility safety and upgraded the experimental equipment such as the non-destructive examination bench IRIS and the Hodoscope on-line fuel motion monitoring system. Specific test devices with appropriate innovative instrumentation follow the test rod behavior during the transient. The successful first test in the pressurized water loop demonstrated the CABRI capability to perform fully instrumented RIA tests in PWR conditions and to provide highly valuable results for RIA phenomena modelling (boiling crisis, post-failure events), for code validation, and for assessing PWR safety criteria.

中文翻译：

---

在 PWR 条件下对辐照燃料棒进行反应性引发事故瞬态测试：CABRI 国际计划

摘要 CABRI 国际计划 (CIP) 测试在原型 PWR 热工水力条件下接受反应性引发事故 (RIA) 代表性功率脉冲的辐照 UO2 或 MOX 燃料。CIP 由 OECD/NEA 框架内的 Institut de Radioprotection et de Surete Nucleaire (IRSN) 管理。实验在 CEA 运营的 CABRI 反应器中进行。对于 CIP，CABRI 受益于新的加压水回路。一项重要的整修计划提高了设施的安全性，并升级了无损检测台 IRIS 和 Hodoscope 在线燃料运动监测系统等实验设备。具有适当创新仪器的特定测试设备在瞬态期间遵循测试棒的行为。