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U.S. Department of Energy
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NEUTRONIC REACTOR CORE INSTRUMENT

Patent ·
OSTI ID:4021405
A multi-purpose instrument for measuring neutron flux, coolant flow rate, and coolant temperature in a nuclear reactor is described. The device consists essentially of a hollow thimble containing a heat conducting element protruding from the inner wall, the element containing on its innermost end an amount of fissionsble materinl to function as a heat source when subjected to neutron flux irradiation. Thermocouple type temperature sensing means are placed on the heat conducting element adjacent the fissionable material and at a point spaced therefrom, and at a point on the thimble which is in contact with the coolant fluid. The temperature differentials measured between the thermocouples are determinative of the neutron flux, coolant flow, and temperature being measured. The device may be utilized as a probe or may be incorporated in a reactor core. (AE C)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-15-025018
Assignee:
U.S. Atomic Energy Commission
Patent Number(s):
US 2997587
OSTI ID:
4021405
Country of Publication:
United States
Language:
English

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