On October 16, the world's first land-based commercial modular small reactor, the "Linglong One" science and technology demonstration project of China National Nuclear Corporation (CNNC) in Changjiang, Hainan, developed by the China Institute of Nuclear Power Plant Design and Research, successfully completed the cold test. This not only demonstrates the comprehensive strength of China in the design of new nuclear energy systems, high-end equipment manufacturing, and complex engineering coordination, but also provides a strong guarantee for subsequent commercial power generation.

The cold test, or cold state functional test, mainly aims to verify the performance of the system and equipment and their auxiliary pipelines under high pressure, which is the first comprehensive "check-up" for the small reactor. The success of the cold test means that the pressure boundary is intact and the sealing is good, marking that the "Linglong One" has entered the commissioning phase from the installation stage.

It is worth noting that this national "new business card" made in China has a "Chengdu gene." The China Institute of Nuclear Power Plant Design and Research located in Chengdu is the birthplace of the core technology of the "Linglong One."

As the world's first land-based commercial modular small reactor to pass the safety review of the International Atomic Energy Agency (IAEA), the "Linglong One" has always attracted attention. IAEA Director General Grossi even praised it as "a benchmark for global small reactor development." According to Song Danrong, the chief designer of the "Linglong One," it can be distributedly arranged for regional grids or small grids. It has comprehensive advantages such as variable power, modular rapid assembly, convenient transportation, stable output, and strong adaptability. Compared with the 10 km radiation emergency plan range of traditional large reactors, the small reactor only has about 500 meters, so it can be built closer to cities.

Currently, there are only five small reactors built or under construction globally, and China is in the first technical tier. After completion, each "Linglong One" unit will have a power generation capacity of 125,000 kilowatts, with an annual power generation of up to 1 billion kilowatt-hours, meeting the needs of 526,000 households, equivalent to reducing carbon dioxide emissions by 880,000 tons and planting 7.5 million trees. In addition, the "Linglong One" can also be applied to heating, seawater desalination, hydrogen production, and other scenarios.

Reporter: Peng Jing

Editor: Zhang Xun

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Original article: https://www.toutiao.com/article/7561737427946947072/

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