Features
• The LHSI Low-Pressure Safety Injection Pump is a vital Class 1E safety component engineered for the Safety Injection System (RSI / RIS) of Hualong One (HPR1000) Generation III Pressurized Water Reactor (PWR) nuclear power plants. Designed for dual-function emergency operation, its primary role is to inject borated cooling water into the primary coolant loop during emergency reactor operations and core cooling periods to promote rapid core cooling. Additionally, it fulfills critical Residual Heat Removal (RHR) functions under normal shutdown procedures as well as severe accident conditions triggered by extreme environmental events such as design-basis earthquakes.
• The pump assembly has successfully completed comprehensive nuclear qualification testing, including hydraulic performance testing, thermal shock resistance testing, cold shock resistance testing, reduced-voltage start testing, and seismic qualification testing. Demonstrating exceptional thermal-transient resilience and structural integrity under high-stress conditions, the LHSIR520/170 meets advanced international standards for Gen-III nuclear island safety injection and residual heat removal pumps.