评价双层安全壳直接旁路泄漏的设计思路研究

Design approach of dual containment direct bypass leakage evaluation

本文探讨了评价压水堆全压双层安全壳直接旁路泄漏的设计思路,特别是如何识别潜在旁路泄漏途径和如何确定旁路泄漏率,提出环廊初始维持较大负压使事故后不出现"正压"阶段从而不需评价"正压"期间旁路泄漏,和环廊初始维持较小负压且需评价事故后"正压"阶段持续时间两种主要设计思路,可指导研发先进压水堆核电厂时选择系统设计方案。

Two design approaches of dual containment direct bypass leakage evaluation （especially the identification of potential bypass leakage paths and the determination of bypass leakage rate） are proposed, maintaining a big initial annulus negative pressure and eliminating the positive pressure period after accidents which allows no direct bypass leakage during the positive pressure period, or maintaining a small initial annulus negative pressure and evaluating the positive pressure period after accidents, which can guide the advanced nuclear power plant research and development.