本文選題：堆芯冷卻惡化 + 恢復(fù)安注措施��； 參考：《核科學(xué)與工程》2017年05期

【摘要】：本文使用RELAPSCDAPSIM3.4程序建立核電廠事故分析模型,選取了典型的中、小冷段破口事故作為分析序列,針對堆芯冷卻惡化現(xiàn)象采取恢復(fù)安注措施進(jìn)行了詳細(xì)的熱工水力計算。著重分析了在輔助給水有效情況下,重啟安注的時間窗口、啟動上充應(yīng)對安注失效情況下的有效性、有無安注箱注入敏感性等。分析結(jié)果表明:當(dāng)堆芯出口溫度超過923K(即650℃),恢復(fù)安注建立應(yīng)急堆芯冷卻流量措施對于中、小破口是有效的;啟動上充對較小破口效果明顯;安注箱有效注入對中破口冷卻惡化事故緩解有重要作用。
[Abstract]:In this paper, the accident analysis model of nuclear power plant is established by using RELAPSCDAPSIM3.4 program, and the typical middle and small cold section break accident is selected as the analysis sequence, and the thermal hydraulic calculation is carried out in detail according to the deterioration of core cooling. In the case of auxiliary water supply efficiency, the time window of restarting the injection is restarted, the effectiveness of the supercharge response to the failure of the injection, the sensitivity of the injection box and so on are analyzed. The results show that when the core outlet temperature exceeds 923K (i.e. 650 鈩，

本文編號：1879230