G - Physics – 01 – N
Patent
G - Physics
01
N
358/8
G01N 23/202 (2006.01) G01N 23/09 (2006.01)
Patent
CA 1116314
ABSTRACT MONO-ENERGETIC NEUTRON VOID METER The ability to measure the ratio of vapour versus liquid in a nuclear steam generating system is highly desirable particularly since, during transient events such as rapid depressurization, the vapour may not be in thermal equilibrium with its liquid and its distribution in the liquid may be highly non-uniform. By using a relatively mono-energetic neutron source such as Californium 252, exposing the medium under investigation to the radiation and using a proton recoil detector as an energy dis- criminating counter one can estimate the ratio of vapour to liquid by measuring the reduction of flux loss due to scattering when the medium includes vapour as well as liquid.
309772
Mcconnell And Fox
Westinghouse Canada Limited
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