Journal of Nuclear Engineering & Technology
Volume 5, Issue 2 (2015)
Published
Table of contents
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System Integrity Analysis on the PMS Designed with the ALS Platform
Abstract: FPGA technology based ALS platform was designed by WEC as the next generation 1E class platform for protection and monitoring system development for nuclear power plants and had been approved by NRC in 2013. Based on the features of the platform and typical PMS function requirements, a new overall architecture based on ALS for PMS is designed and the consistency with system integrity requirements in SRP is analyzed. The evaluation …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 1–11 Read article
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Characterization of Formed Third Phase in the Nitric Acid-30% TBP/n-Dodecane System
Abstract: In solvent extraction operations, limited solubility of extracted solvate in the organic phase results in partitioning of the later into two phases, called light organic and heavy organic phase respectively. The phenomenon is studied well and reported for tetravalent actinides in TBP systems but nitric acid third phase in TBP systems was almost neglected. In this study, nitric acid third phase was generated for TBP system and its characterization has …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 13–19 Read article
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PVT Properties of Alternate PUREX diluent 4,4-Dipropyl Heptane
Abstract: 4,4-Dipropyl Heptane (Hydrogenated propylene tetramer) is an alternate diluent for PUREX process, employed for reprocessing of spent nuclear fuel. Its PVT properties are not available in literature. With group contribution method, PVT properties of 4,4-dipropyl heptane were estimated and reported in this work. A corresponding- states based equation as well as Wagner constants were also reported in the range of 273.15K to critical temperature. Keywords: PVT properties, 4, 4-dipropyl heptane, …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 20–23 Read article
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Estimation of Aqueous Solubility of Tri-n-Butyl Phosphate by Refractive Index Measurement at 298.15 K
Abstract: Presence of dissolved tri-n-butyl phosphate (TBP) in the aqueous nitric acid solutions, can lead to runaway reactions in presence of nitric acid at temperature more than 130o C. Therefore, the concentration of dissolved TBP in the aqueous nitric solutions is an important control parameter for safe operation of product/waste evaporators. The experimental measurements of refractive index of six aqueous solutions of TBP in the range of 0-400 mg/L were performed …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 24–27 Read article
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Organic Phase Speciation of 36% Tri-Iso Amyl Phosphate/N-Dodecane Solvent during Nitric Acid Extraction
Abstract: Several solutions of 36% TiAP/n-dodecane solvent were equilibrated with different concentrations of aqueous nitric acid solutions at 298.15 K at a phase ratio of unity. The resultant equilibrated aqueous and organic solutions were analyzed for acidity. A three-solvate model with molecular HNO3 based mechanism was assumed for nitric acid extraction by TiAP. This model was analogous to the 3-solvate model for nitric acid extraction by TBP, recently reported by authors. …
Published in Journal of Nuclear Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 28–34 Read article