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首页> 美国政府科技报告 >Fissile Flow and Enrichment Monitor for GCEP Advanced Safeguards Applications.
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Fissile Flow and Enrichment Monitor for GCEP Advanced Safeguards Applications.

机译：用于GCEp高级安全防护应用的裂变流和富集监测器。

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This paper presents experimental data that demonstrate a concept for a 235U flow and enrichment monitor (FEMO) based on passive measurements of process equipment in gaseous centrifuge enrichment plants (GCEPs). The primary goal of the FEMO is to prevent, without using pipe penetrations or active interrogation with external sources, the production and diversion of undeclared nuclear material. This FEMO concept utilizes: (1) calibrated measurements of 235U density in cascade headers, and (2) measurements of pump inlet pressure and volumetric flow rate, which are correlated to the electrical power consumed by the GCEP pumps that transport UF6 from the cascade to the condensation cylinders. The 235U density is measured by counting 186 keV emissions using a NaI gamma detector located upstream of the pump. The pump inlet pressure and volumetric flow rate are determined using a correlation that is a function of the measured pump operational parameters (e.g., electric power consumption and rotational frequency) and the pumping configuration. The concept has been demonstrated in a low-pressure flow loop at Oak Ridge National Laboratory.

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