这项研究的主要目的是通过文献调研，了解能够将核电厂内部氢爆炸风险降至最低的常用方法，并研究严重事故期间氢的影响，以了解这些对策对于阻止氢气爆炸的有效性。为了实现该目标，使用SNERDI开发的AICC软件执行了一些基本计算，计算绝热等速完全燃烧压力值，以检查其是否超过了各种安全壳的最大可用压力值，以确保安全壳的完整性，因为安全壳是可以包容放射性物质的最重要的一道屏障，用以保护人类和环境使其免受伤害。利用AICC的计算方法，对出AP1000和秦山核电站的安全壳进行了计算。结果显示氢爆后的压力峰值都在安全范围。为了搞清楚氢气燃烧爆炸的原理，本文对与氢燃烧理论有关的各种研究论文进行了综述，包括福岛第一核电站灾难后提出的一些假设，调研了不同的安全壳类型、可燃性限制、与此相关的大量实验，以及反应堆厂房内的氢行为、除氢机理、不同的缓解措施，以便更好地理解氢危害以及在严重事故情况下将氢危害降至最低的方法。

In this research the main purpose is to understand the common ways to minimize the risk of hydrogen explosions inside the nuclear power plants with the help of scientific papers on this field, and investigating the effects of hydrogen during severe accidents to see how effective these countermeasures are against the hydrogen explosions. In order to achieve that goal, some basic calculations are performed using the AICC computer code.AICC Software is developed by SNERDI in order to calculate the adiabatic isochoric complete combustion pressure value to check whether it exceeds the maximum available pressure for the various containments to make sure the integrity of the containment since it is the most important barrier that can contain the radioactive materials inside and protecting the people and the environment from the harm. The calculation methods of theAICC is explained and the results are given for the AP1000 Nuclear Power Plant. Since the certain reactor parameters are classified and cannot be found easily, calculations are performed only for this containment design and the result shows that the containment is safe and the peak pressure after the combustion is not more than the limitation. The time required to get the results is not too much but the main purpose is to understand the theory of it. For that purpose, various research papers related to hydrogen combustion theory is reviewed, including the some hypothesis made after the Fukushima Daiichi disaster are searched and the ways to minimize the hydrogen hazards in severe accident conditions are investigated. Different types of containments are investigated to study the mitigation measures against the hydrogen explosions inside the nuclear power plants. The different containment types, flammability limitations, numerous experiments related to this topic are investigated as well as the hydrogen behaviour inside the reactor building, the mechanisms to remove the hydrogen, different mitigation measures are investigated for a better understanding on hydrogen risk and how to avoid this risk inside the containment.