[en] A mixture of Tri-butyl phosphate (TBP) and n-Dodecane used in nuclear fuel reprocessing plants have limited life because of formation of degradation compounds due to irradiation and chemical attack, leading to generation of spent solvent as radioactive organic Liquid Waste (OLW). To meet the objective of waste minimisation in high throughput plants, it is vital to develop a technology to recover and reuse of solvents from organic waste Vacuum Distillation is envisaged as an effective method for removal of these degradation compounds and recovery of pure TBP and n-Dodecane from the organic waste. Careful design of Vacuum distillation system is very crucial as TBP is not highly volatile, a thermo-sensitive compound at elevated temperatures and having very low concentrations of variety of impurities in organic waste that need to be removed. A plant scale vacuum distillation demonstration facility has been developed, designed and installed at TWMP, NRB, BARC, Tarapur. Successful trials have been carried out with simulated organic waste with recovery of significant portion of high purity TBP and n-Dodecane. The developed distillation system has an assured potential to become a standard and efficient treatment system in every radioactive organic liquid waste management plants in India. (author)