- 學位論文
核一廠火場濃煙及滅火氣體擴散行為研究
Movement Behavior Study on Fire Smoke and Gaseous Suppressant at Chinshan NPP
摘要
核三廠一號機曾發生3A火災事故，此次火災順利被廠房內自動氣體滅火(二氧化碳)設備所撲滅，但火災產生的濃煙與二氧化碳滅火藥劑於廠房內擴散、流竄對機組及人員安全造成危害，使火災現場狀況不易掌握且增加事故後回復供電的困難。此事故雖然發生在核三廠，但國內其他核能電廠亦不排除有發生的可能性，有鑑於此，對核一廠進行火災事故模擬分析，以確保火災事故發生自動氣體滅火設備做動的情況下機組及人員安全。 本研究利用NIST開發的場模式軟體FDS，建立核一廠3D實體模型以及各項通風系統。利用所建立的三維暫態模型研究火災情境時所產生的濃煙、有毒氣體與滅火氣體(二氧化碳)於核一廠的聯合廠房與反應器廠房內流動、擴散的現象，所模擬的火災情境是以最保守的條件設定某些假設以及初始條件，並且參考國外的火災危害影響因素定出各項安全標準，並以這些標準判定各個防火區劃是否仍處於安全條件下。 本研究針對不同的防火區劃發生火災情境對於其他防火區劃及控制室人員所造成的衝擊進行評估。由於火災發生時將產生高壓、高溫狀態；自動氣體滅火系統啟動後放射高濃度CO2也成為人員危害因子之一。本研究將探討此兩項因素相互影響下，將對火場濃煙、滅火氣體的擴散及危害指標多大的影響。本論文目前只有防火區劃5和防火區劃7的結果，就以這兩個防火區劃模擬的結果來看，有以下結果：(1)安全區域會隨火災事件位置不同而不同。(2)濃煙的擴散速度會因為是否放射二氧化碳而不同。(3)控制室在模擬結束時處於危險區域(在防火區劃7發生火災情況)。
並列摘要
Maanshan NPP unit 1 happened a 3A fire accident the fire was successfully extinguished by the carbon dioxide fire suppression system in control building .However, fire’s smoke and carbon dioxide fire extinguishing agents were flow and diffusion in control building caused equipment damage and personnel safety problems and made it hard to control the fire situations and increase the difficulties of supply power after fire accidents. Although this accident occurred in the Maanshan nuclear plant, but other nuclear power plants in Taiwan do not rule out the likelihood accidents. It’s important to ensure that the similar fire accidents happen at Chinshan nuclear power plant would not cause equipment damage and personnel safety problems. In this study, a 3D transient model is established for simulation of the diffusion path of smoke and gaseous suppressant (CO2) in the Chinshan NPP’s combination building when fire disaster is occurred. The simulation tool is FDS (Fire Dynamics Simulator) developed by NIST. The 3D transient model contains large objects and HVAC systems in the combination building. The analysis chooses the conservative conditions as some assumptions and initial conditions of the simulation. The study modifies the SFPE (Society of Fire Protection Engineers) safety standards to decide the fire zones are safety for human or not. Each fire zone could be analyzed by two situations under the different scenarios, the result of each situation affect the other regions fire zones and operators in control room. Fire will produce high temperature and high pressure and the automatic fire extinguishing system activated would injected high concentration CO2 are danger factors. In this study discuss the two factors how to affect the movement of smoke particles and carbon dioxide and the change of the safe indicators, each factor will cause different impact of control room. This paper only contains the consequences of fire zone 5 and fire zone 7, the results from the consequences are (1) the safe regions are varied with the location of events, (2) the diffusion velocity of smoke will be different due to CO2 injected, (3) the control room is danger region at the end of simulation (under the accidents happen at fire zone 7 situation).
參考文獻
延伸閱讀
- 林羣超（2010）。核三廠火場濃煙及滅火氣體擴散行為研究〔碩士論文，國立清華大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0016-1901201111410397
- 張瑞宏、黃偉慶、廖久智、盧建宏、鄭博昇（2014）。用過核燃料深層地下處置場之震後開裂影響分析。中華水土保持學報，45(1)，67-76。https://doi.org/10.29417/JCSWC.201403_45(1).0007
- 楊宏宇、鄭瑞毅（2019）。火場通風排煙配置對於消防搶救安全性模擬分析之研究－以鐵皮結構建築物為例。物業管理學報，10(1)，47-56。https://www.airitilibrary.com/Article/Detail?DocID=20765509-201903-201904090013-201904090013-47-56
- 唐雲明、黃讚松、普開祥、羅譽昌、徐同浩、黃柏豪、張倢睿（2019）。高科技廠房火災風險管理之初探。危機管理學刊，16(2)，51-64。https://doi.org/10.6459/JCM.201909_16(2).0005
- Jing, H., & Wang, S. H. (2016). RESEARCH ON POLLUTION FLASHOVER PROBABILITY OF CONTACT NETWORK INSULATOR BASED ON METEOROLOGICAL FACTORS. 電機工程學刊, 23(4), 133-142. https://doi.org/10.6329/CIEE.2016.4.01