研究生: |
徐世融 Hsu, Shih-Jung |
---|---|
論文名稱: |
龍門電廠雷傳模式穩態初始化程序及爐內泵跳脫暫態事故分析 The Initialization Procedure of Steady State and the Analysis of RIPs Trip Transients for Lungmen RETRAN System Model |
指導教授: |
施純寬
Shih, ChunKuan 王仲容 Wang, Jong-Rong |
口試委員: |
施純寬
Shih, ChunKuan 王仲容 Wang, Jong-Rong 林浩慈 Lin, Hao Tzu |
學位類別: |
碩士 Master |
系所名稱: |
原子科學院 - 核子工程與科學研究所 Nuclear Engineering and Science |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 126 |
中文關鍵詞: | 雷傳 、穩態初始化 、爐內泵 、起動測試 、安全分析 、龍門電廠 |
外文關鍵詞: | Retran, steady state initialization, reactor internal pump, startup test, safety analysis, Lungmen power plant |
相關次數: | 點閱:1 下載:0 |
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雷傳(RETRAN)程式是一個熱流系統分析的程式,目前已被廣泛的應用在核能發電工業上。本文主要內容為,使用RETRAN-3D程式對於即將商轉的龍門電廠進行起動測試或安全分析等暫態模擬時,在不同的起始條件下(燃料週期、功率、流量、壓力等…)進行分析,需要對雷傳程式的基本輸入檔進行一連串修改的程序,使之能在要求的起始條件下達成穩定的狀態,進而做更進一步暫態的分析。龍門電廠為一進步型沸水式核能電廠,其架構跟傳統沸水式電廠主要的差異為再循環水控制系統中的十台爐內泵。利用雷傳程式模擬分析龍門電廠爐內泵跳事故,包含起動測試(1及3台爐內泵跳脫事故),及安全分析(全爐內泵跳脫事故),再與廠商所給的資料進行比對(起動測試報告及最終安全分析報告),比對後的結果均滿足物理現象且數值趨勢相近。此外,在全爐內泵跳脫事故,利用穩態初始化程序得到不同功率流量的初始條件,進行相關的設定點分析,如不同起始條件若發生全爐內泵跳脫事故及額定功率流量下,跳脫一至十台爐內泵,是否會造成跳機,發現在功率100%爐心流量100%起始條件下,跳脫十台爐內泵會造成跳機,若同等起始條件下,跳脫九台爐內泵則不會造成跳機。造成跳機原因是因為接收到一個快速爐心流量下降訊號,此訊號經由儀器讀取而得,存在一個訊號傳遞時間,此時間長短會影響到跳機與否。在功率流量均為100%的起始條件下,修改此參數進行靈敏度分析,會影響造成跳機結果的爐內泵跳脫數目。調整範圍在0~1.0之間,可得出在七台爐內泵及九台爐內泵發生跳脫時會產生跳機的不同結果
RETRAN-3D,a computer program for transient thermal-hydraulic analysis of complex fluid flow system,has been applied generally to nuclear engineering.The thesis’s content includes the input data calculation and the process of initialization procedure forLungmen RETRAN system model, because that when we do some startup tests or safety analysis on different initial conditions(fuel cycle, power, core flow, pressure etc…), we should guarantee the initial condition’s stability by modifying the base deck using the initialization procedure. Analysis model has been developed for the first advanced boiling water reactor (ABWR) in Taiwan, Lungmen NPP. Especially, Lungmen ABWR has ten reactor internal pumps.Theresearch investigates the plant responses to trips of one and three RIPs(Startup test) and all RIPs(Safety analysis) determines whether the test resultare met with Startup test report and FSAR in these transient simulations.In the event of the all RIPs trip, changing the initial conditions (power and core flow) by previous procedure and checking if scram or not can be done in the set point analysis. The scram signal called rapid core flow coastdown is about the core flow’s change rate. The Core flow measurements have the delayed time so that the delayed time could affect the scram result. At 100% power and core flow initial condition, to do the sensitivity study, tuning this time constant can result the scram or not with different number of RIPs trip.
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