Method for controlling zinc addition to power reactor
AssigneeGeneral Electric Company
InventorWilliam J. Marble
Life of this patent
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Abstract
Method for controlling the introduction of zinc to a nuclear power reactor to control radiation build-up wherein zinc ions are introduced into the reactor water to counteract loss of zinc within the reactor system. In the process, the rate of introduction of zinc ions into the reactor water is balanced with the rate at which zinc ions are lost from the reactor.
Claims13
A method of controlling zinc addition to a nuclear power reactor to control radiation build-up wherein zinc ions are introduced into the reactor water, which comprises balancing the rate of introduction of zinc ions into the reactor water with the rate at which zinc ions are lost to the reactor system.
A method for estimating the concentration factor for zinc between the reactor water and the feed water of a nuclear reactor comprising using the equation:
- CF=1/{(0.9*RWCU)+(0.02*FeFW)+(0.008)} (8)
- where:
- CF=Concentration Factor (R×W Zn/FW Zn)
- RWCU=Size of the reactor water cleanup system (% of FW flow)
- FeFW=Total iron concentration in the feedwater ppb)
- wherein 0.9 represents the efficiency of removal by the reactor water cleanup system, 0.02 represents the amount of zinc absorbed by the feedwater iron per ppb of zinc in the reactor water, and 0.008 represents the boiling deposition factor for zinc.
A method according to claim 12, wherein the total pounds of ZnO required is obtained by dividing the answer obtained according to the equation as defined in claim 14 by 0.8.
Dependencies are inferred from the claim text.