Abstract The ultimate purpose of the nuclear power plant safety is to protect the public and the environment from unacceptable radiation exposure in all operational states. This paper presents a novel severe accident management framework to cope with the risk of radioactive material release to the environment. The objective is to reduce the contribution of severe accidents to the large and early release frequencies of radioactive materials for a VVER-1000 nuclear reactor. The proposed approach includes the emergency actions of NPP personnel aiming to recover the lost alternating power and restore the core cooling process by all means available at the site. In addition, mobile equipment including a diesel generator and some mobile diesel pumps for termination of the core melting process at the early stage of accident have been procured. In order to determine if sufficient provisions have been made, a level 2 PSA study has been conducted.

中文翻译：

---

考虑到创新的严重事故管理战略，重新评价 VVER-1000 核电厂的 2 级 PSA 结果

摘要 核电厂安全的最终目的是保护公众和环境在所有运行状态下免受不可接受的辐射照射。本文提出了一种新的严重事故管理框架，以应对放射性物质释放到环境中的风险。目标是减少严重事故对 VVER-1000 核反应堆放射性物质大量和早期释放频率的影响。提议的方法包括核电厂人员的紧急行动，旨在通过现场可用的一切手段恢复失去的交流电源并恢复堆芯冷却过程。此外，还采购了移动设备，包括柴油发电机和一些移动柴油泵，用于在事故早期终止堆芯熔化过程。