Authors:
Biplab Das Kalpakkam Reprocessing Plant, Bhabha Atomic Research Centre Facilities, Kalpakkam, 603102 India

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Shekhar Kumar Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 India

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P. Mondal Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, 247667 India

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U. Kamachi Mudali Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 India

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R. Natarajan Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 India

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Abstract  

Red-oil is a mixture of nonspecific composition consisting of extractant, degradation products, nitrated solvent and unidentified red-coloured nitro-organics. Red-oil formation is coupled with decomposition of extractant and diluent into gases of explosive nature. If ignited or incinerated, these gases may cause rapid pressurization and endanger the integrity of containment. Such an event occurred at Tomsk-7 facility in 1993. To ensure safe operation, red-oil formation has to be avoided in the fuel cycle facilities by a careful combination of several independent measures like strict control over temperature, limiting organic entrainment in the aqueous streams (which are to be concentrated by evaporation) and control over acidity of aqueous phases. Since tri-iso amyl phosphate (TiAP) has much lower aqueous solubility as compared to TBP, it is visualized as alternate solvent for PUREX process. In this work, TiAP red-oil was synthesized and characterized.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)