Safety system for a gas cooled high temperature reactor
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United States of America Patent
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-
Jul 2, 1991
Grant Date -
N/A
app pub date -
Feb 24, 1989
filing date -
Feb 24, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A safety system controlling extremely unlikely disturbances in high temperature reactors in addition to and independent of the normal reactor protection systems. Accident instrumentation located in the high temperature reactor monitors certain characteristic process parameters (hot gas temperature, cold gas temperature, cooling gas pressure), for values of which clearly exceed limiting values of the reactor pressure system. The measured data is evaluated electronically and power supply to the cooling gas blowers, feed water pumps and absorber rod holding devices is interrupted if predetermined limiting values are exceeded. The power supply interruption is further actuated by temperature and pressure sensitive devices located in the nuclear reactor. A manually operated emergency switch is provided to turn off the aforementioned sensibilities.
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