Design Principles of a Simple and Safe 200-MW(thermal) Nuclear District Heating Plant
作者:
GoetzmannClaus,
BittermannDietmar,
GöbelAndreas,
期刊:
Nuclear Technology
(Taylor Available online 1987)
卷期:
Volume 79,
issue 2
页码: 144-157
ISSN:0029-5450
年代: 1987
DOI:10.13182/NT87-A34032
出版商: Taylor&Francis
数据来源: Taylor
摘要:
Kraftwerk Union AG has almost completed the development of a dedicated 200-MW(thermal) nuclear district heating plant to provide environmentally clean energy at a predictably low cost. The concept can easily be adapted to meet power requirements within the 100- to 500-MW(thermal) range. This technology is the product of the experience gained with large pressurized water reactor and boiling water reactor power plants, with respect to both plant and fuel performance. The major development task is that of achieving sufficiently low capital cost by tailoring components and systems designed for large plants to the specific requirements of district heating. These requirements are small absolute power, low temperatures and pressures, and modest load following, all of which result in the characteristics that are summarized. A fully integrated primary system with natural circulation permits a very compact reactor building containing all safety-related systems and components. Plant safety is essentially guaranteed by inherent features. The reactor containment is tightly fitted around the reactor pressure vessel in such a way that, in the event of any postulated coolant leak, the core cannot become uncovered, even temporarily. Shutdown is assured by gravity drop of the control rods mounted above the core. Decay heat is removed from the core by means of natural circulation via dedicated intermediate circuits of external aircoolers. The design work for systems, components, and structures has almost been completed. Detailed accident analyses have demonstrated that the plant’s safety characteristics are excellent.
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