恰希玛核电厂2号机组高压熔堆预防和缓解措施的设计和分析  

Design and Analysis of Prevention and Mitigation Measures against Core Melting under High Pressure in RCS for CHASHMA NPP Unit 2

作　　者：史国宝[1] 

机构地区：[1]上海核工程研究设计院,上海200233

出　　处：《核动力工程》2011年第6期110-114,共5页Nuclear Power Engineering

摘　　要：恰希玛核电厂2号机组在稳压器上增设一个电动节流阀,用于在"充水-排汽"冷却中实施排汽,以及严重事故高压熔堆下快速降压。本文采用SCDAP/RELAP5/MOD3.1程序分析了全厂断电叠加2个系列柴油机辅助给水系统失效事故,结果表明,增设的稳压器电动节流阀能有效地实施严重事故下快速降压,缓解事故后果。A motor operated valve（MOV） is added on the Pressurizer for CHASHMA NPP Unit 2,to implement the bleed function in Feed-Bleed cooling mode,and depressurize rapidly the RCS during high pressure core melt in severe accident.This paper analyzes the accident consequence of Station Blackout co-incident with the loss of Diesel Driven Feedwater Pumps using the computer code of SCDAP/RELAP5/MOD 3.1,and the analysis results justify that the added MOV is able to depressurize the RCS effectively to miti-gate the accident consequence in severe accident.

关 键 词：高压熔堆 缓解措施 快速降压 电动节流阀 

分 类 号：TL351.6[核科学技术—核技术及应用]