本文利用 SACOS-PB 程序对卧式铅铋堆单组件和全堆芯开展了热工水力特性分析，考虑了倾斜、起伏和摇摆等典型海洋运动工况。 利用耦合分析平台，对起伏与纵摇同时存在的耦合海洋条件下卧式铅铋堆全系统开展典型事故安全分析，包括堵流事故、UTOP 事故及两者共存的叠加事故。

In this paper, the thermal and hydraulic characteristics of single component and full core of horizontal lead-bismuth reactor have been analyzed by SACOS-PB program. Typical ocean motion conditions such as tilt, undulation and sway have been considered.Based on the coupled analysis platform, typical accidents of the whole system of horizontal lead-bismuth reactor under coupled ocean conditions with both heave and pitch are analyzed, including the plugging accident, UTOP accident and the superposition accident of both.