chemical shim control of nuclear reactor

简明释义

反应堆化学补偿控制

英英释义

例句

1.Research on chemical shim control of nuclear reactor has led to more efficient reactor designs.

对核反应堆的化学垫片控制的研究导致了更高效的反应堆设计。

2.The engineers discussed the implementation of chemical shim control of nuclear reactor to optimize the reactor's performance.

工程师们讨论了实施核反应堆的化学垫片控制以优化反应堆的性能。

3.The training program included modules on chemical shim control of nuclear reactor for new operators.

培训项目包括针对新操作员的核反应堆的化学垫片控制模块。

4.During the safety review, the team highlighted the importance of chemical shim control of nuclear reactor in maintaining stability.

在安全审查期间，团队强调了核反应堆的化学垫片控制在维持稳定性方面的重要性。

5.The operator adjusted the chemical shim control of nuclear reactor to respond to changes in fuel composition.

操作员调整了核反应堆的化学垫片控制以应对燃料成分的变化。

作文

The operation of a nuclear reactor is a complex process that requires precise control of various parameters to ensure safety and efficiency. One of the critical aspects of this control is the management of reactivity within the reactor core. This is where the concept of chemical shim control of nuclear reactor comes into play. In essence, chemical shim control of nuclear reactor refers to the use of chemical substances to adjust the neutron population in the reactor, thereby influencing the fission rate and overall power output.Reactors rely on a delicate balance between the production and absorption of neutrons. The fission process generates neutrons, which can further induce more fission reactions. However, certain materials, known as neutron absorbers or 'shims', can capture these neutrons and reduce their availability for sustaining the chain reaction. Traditional shimming techniques involve physical control rods made from materials like boron or cadmium. However, chemical shim control of nuclear reactor offers an alternative method that can be more flexible and responsive to changing conditions.In practice, chemical shim control involves introducing specific chemicals into the reactor coolant or moderator. These chemicals are chosen based on their ability to absorb neutrons effectively. For instance, lithium hydroxide is often used in pressurized water reactors to help manage pH levels and also function as a neutron absorber. By carefully adjusting the concentration of these chemicals, operators can finely tune the reactivity of the reactor without the need for mechanical adjustments.One of the key advantages of chemical shim control of nuclear reactor is its ability to provide continuous and automatic control over reactor power levels. This is particularly beneficial during periods of fluctuating demand for electricity, as the reactor can quickly adapt to changes without the delays associated with physical control rod movements. Moreover, this method can enhance the overall safety of the reactor by allowing for more rapid responses to unexpected changes in reactor conditions.However, implementing chemical shim control of nuclear reactor is not without its challenges. The introduction of chemicals into the reactor system requires careful monitoring to prevent unwanted side effects, such as corrosion or the formation of precipitates that could clog systems. Additionally, the long-term effects of these chemicals on reactor materials must be thoroughly understood to avoid degradation of components over time.In conclusion, chemical shim control of nuclear reactor represents an innovative approach to managing reactivity in nuclear reactors. By utilizing chemical agents to regulate neutron populations, this technique offers enhanced flexibility and responsiveness compared to traditional methods. As the nuclear industry continues to evolve, embracing advanced control strategies like chemical shim control of nuclear reactor will be essential for improving both the safety and efficiency of nuclear power generation. Future research and development in this area could lead to even more refined techniques, ensuring that nuclear energy remains a viable and sustainable option for meeting the world's growing energy needs.

核反应堆的运行是一个复杂的过程，需要精确控制各种参数，以确保安全和效率。控制的一个关键方面是管理反应堆核心中的反应性。这就是化学调节控制核反应堆概念的来源。实际上，化学调节控制核反应堆是指利用化学物质来调整反应堆中中子的数量，从而影响裂变速率和整体功率输出。反应堆依赖于中子产生和吸收之间的微妙平衡。裂变过程会产生中子，这些中子可以进一步诱导更多的裂变反应。然而，某些材料被称为中子吸收剂或“调节剂”，可以捕获这些中子并减少它们维持链式反应的可用性。传统的调节技术涉及使用像硼或镉这样的材料制成的物理控制棒。然而，化学调节控制核反应堆提供了一种更灵活、响应更快的方法。在实践中，化学调节控制涉及将特定的化学物质引入反应堆冷却剂或中子减速剂。这些化学物质是根据其有效吸收中子的能力进行选择的。例如，氢氧化锂通常用于加压水反应堆，以帮助管理pH值，同时也作为中子吸收剂。通过仔细调整这些化学物质的浓度，操作员可以精细调节反应堆的反应性，而无需进行机械调整。化学调节控制核反应堆的一个主要优点是能够对反应堆功率水平提供连续和自动的控制。这在电力需求波动期间尤其有利，因为反应堆可以迅速适应变化，而不需要与物理控制棒移动相关的延迟。此外，这种方法还可以通过允许更快速地响应意外的反应堆条件变化来增强反应堆的整体安全性。然而，实施化学调节控制核反应堆并非没有挑战。将化学物质引入反应堆系统需要仔细监测，以防止不必要的副作用，例如腐蚀或形成沉淀物，这些沉淀物可能会堵塞系统。此外，必须彻底了解这些化学物质对反应堆材料的长期影响，以避免随时间推移导致组件的退化。总之，化学调节控制核反应堆代表了一种创新的方法，用于管理核反应堆中的反应性。通过利用化学试剂来调节中子数量，这一技术提供了比传统方法更大的灵活性和响应能力。随着核工业的不断发展，采用先进的控制策略，如化学调节控制核反应堆，对于提高核电发电的安全性和效率至关重要。在这一领域的未来研究和开发可能会导致更精细的技术，确保核能继续成为满足全球日益增长的能源需求的可行和可持续的选择。