本文選題：大破口失水事故 + 先進壓水堆��； 參考：《核科學與工程》2017年04期

【摘要】：本文采用集總參數(shù)法,在先進非能動壓水堆核電廠嚴重事故一體化分析模型基礎上,考慮先進壓水堆非能動安全特性以及嚴重事故下采取熔融物堆內滯留(IVR)措施等特性對氫氣風險的影響,開展了典型嚴重事故下安全殼內氫氣風險分析。分別選取了冷段雙端剪切斷裂大破口、冷段大破口疊加IRWST重力注水有效以及ADS-4誤啟動三個典型大破口失水事故序列,對事故進程中的氧化溫度、產(chǎn)氫速率以及產(chǎn)氫質量等特性進行了研究。選取產(chǎn)氫量最大的冷段大破口疊加IRWST重力注水有效事故序列,分析了氫氣點火器系統(tǒng)的消氫效果。結果表明,堆芯再淹沒過程產(chǎn)生大量氫氣,采用點火器可有效去除安全殼內的氫氣,從而降低氫氣燃爆風險。
[Abstract]:In this paper, the lumped parameter method is used on the basis of the integrated analysis model for the serious accidents of advanced non-active pressurized water reactor nuclear power plants.Considering the influence of the non-active safety characteristics of advanced pressurized water reactor (PWR) and the measures such as IVR (molten matter retention) in serious accidents on the hydrogen risk, the risk analysis of hydrogen in containment under typical serious accidents was carried out.In this paper, three typical water loss accident sequences of cold section double end shear fracture, IRWST gravity injection superimposed by cold section and ADS-4 misstarting are selected, and the oxidation temperature in the process of the accident is analyzed.The characteristics of hydrogen production rate and hydrogen production mass were studied.The hydrogen suppression effect of hydrogen igniter system is analyzed by selecting the sequence of IRWST gravity injection effective accident sequence with the largest hydrogen production in the cold section.The results show that a large amount of hydrogen is produced during the reflooding of the reactor core, and the ignition device can effectively remove the hydrogen in the containment, thus reducing the risk of hydrogen explosion.
【作者單位】： 上海交通大學機械與動力工程學院;
【基金】：國家科技重大專項資助項目(2015ZX06004003-002)
【分類號】：TL364.4
，

本文編號：1736948