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Title: GAS COOLED POWER REACTOR COOLANT CHOICE

Technical Report ·
DOI:https://doi.org/10.2172/4293337· OSTI ID:4293337

The current status of helium and carbon dioxide technology is described in the light of the Gas Cooled Reactor Program requiremoents. The problem of containing high-pressure helium at high temperature is discussed, and it is concluded that, by proper attention to the design, construction and maintenance of a plant, a high degree of helium leak-tightness can be achieved at small additional cost when compared with a carbon dioxide system. What is more, the cost of making up helium losses in a practically achievable system is estimated to be small compared with other fixed and operating costs. Graphite-carbon dioxide reaction data are reviewed. It is shown that carbon dioxide at atmospheric pressure and low flow rates should be compatible with a graphite mooderator up to 525 C. No data are available at the high pressures and fiow rates that would be encountered in power reactors. Significantiy higher oxidation rates may result, however, perhaps limiting bulk moderator temperatures to 450 to 500 C. Improved carbon materials, protective coatings and inhibitors, and/or operating practices may be developed that will allow significant future increases in these limiting temperatures. (auth)

Research Organization:
General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
Sponsoring Organization:
USDOE
DOE Contract Number:
W-31-109-ENG-52
NSA Number:
NSA-13-002584
OSTI ID:
4293337
Report Number(s):
HW-56362(Rev.)
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English