Waste Management Division is mandated with
• Safe collection, transportation & segregation of various types of radioactive wastes generated by Fuel cycle facilties and radiological laboratories of BARC, Trombay.
• Treatment/conditioning of radioactive wastes to minimize waste volume and to result in to a chemical durable product to ascertain isolation of radionuclide from human environment. The process effluent containing small traces of radioactivity are further diluted and discharged ensuring well below the limit set by regulatory authorities realising 'Near Zero Discharge' concepts.
• Recovery of valuable radionuclide, such as Cs-137, Sr-90, Ru-106, from nuclear waste for deployment in various societal applications realising 'Wealth from Waste'.
• Disposal of radioactive solid waste, after applying suitable treatment for volume reduction, in engineered modules to contain/ isolate the radionuclide from the environment.
• Management of spent radiation sources received from various users like industries, healthcare centre, agricultural, R & D institutes and universities from north-East-West part of the country.
• Applied development studies relevant to radioactive waste management for technological up gradation, recovery of valuable radionuclide from nuclear waste, improvement in matrices, performance / capacity enhancement of treatment processes and characterization of different components of Engineered Barrier System for repository.
• An advisory role on radioactive waste management approaches to AERB, NPCIL, IRE, UCIL, BRIT and IAEA through various technical meetings / conferences and support for preparation of technical documents on radioactive waste safety.
• Organizing training programme for strengthening human resource base for back-end of fuel cycle, public awareness activities through lectures / invited talks, technical visits to the facilities.
Operation of WIP is continued for treatment of High Level Liquid Waste (HLLW) involving partitioning of waste for value recovery. Operation of Waste Management Facilities i.e. ETP, DC and RSMS were carried out to cater to the management of waste arising from various nuclear and radiological facilities of BARC Trombay for their un-interrupted operation.
Efforts have been made to improve indigenous glass fibre media to meet the requirement of mask. Several additives like polyester fabric, binders, coarse glass fibre and fine glass fibre were optimised to result into a filter media having optimal performance for a mask, having emphasis on adequate particle retention efficiency and breathing resistance. Three vendors have been developed to make the masks using indigenously developed glass fibre media. More than 18000 masks have been produced, out of which 6000 masks have been given to Medical Division. Remaining masks were given to Fire Service Section, TC members, NRB etc. Feedback are satisfactory and encouraging. In view to check the reusability of masks, masks (five numbers of each manufactures) were subjected to three wash cycle, each cycle involving waste soap solution followed by rinsing with water and drying. The masks were tested at BIS approved lab, based on NIOSH code universally accepted to qualify N95 mask, and efficiency of masks were found to be better than 95%. Results obtained indicates that mask made with supporting layer to glass media has nearing no change in performance.
After successful recovery of Cs from High Level liquid waste, the purified Cs solution is converted in to Cs glass pencils. Total 30 numbers of Cs glass pencils were produced, welded and transported to BRIT for blood irradiator after stringent quality assurance.
Effluent Treatment Plant (ETP) is mandated with the task for management of Radioactive Low Level Liquid waste (LLW) generated by various plants and radiochemical facilities in Trombay. The Plant was commissioned on 26/07/1966 and since then engaged in receipt/collection, treatment and conditioning of LLW generated by Research Reactors, Plutonium Plant, Waste Immobilization Plant, Radiological Laboratories, etc. Chemical Treatment Flow sheet is employed at ETP for treatment of LLW. Cementation process is used for solidification of concentrated chemical sludges resulting from chemical treatment and centrifugation operations. Spent TBP from Plutonium Plant is also managed at ETP. Alkaline hydrolysis system used to partition the radioactivity into aqueous stream leaving behind a relatively low active dodecane. The aqueous stream is cementized and dodecane stream is incinerated.
\r\nIn order to follow ALARA principle and in accordance with “near-zero-discharge” philosophy, a hybrid process comprising of membrane processes and ion exchange process is being evaluated to further reduce the discharges and to recycle the decontaminated effluent.
\r\nETP is thus fulfilling its mandate, within regulatory limits, for more than 50 years and will continue to support BARC activities in the coming years.
Decontamination Centre was established with a mandate to decontaminate the protective wears (active as well as inactive) and metallic components generated by various divisions of BARC. The facility was established in 1965. Different types of protective wears from various plants / facilities in BARC are collected, subjected to adequate decontamination process using industrial scale Washer-Extractors and Dryers, monitored and delivered back to respective users. Dhruva cut-end are also decontaminated in a multi-step ultrasonic-assisted chemical decontamination process.
\r\nDC is continuing to fulfill the mandate of decontamination of all types of protective wears and other heavy equipments thereby contributing towards significant minimization of waste and realizing the philosophy of Recover-Recycle-Reuse.
Radioactive Solid Waste Management Site (RSMS) is mandated with safe management of Radioactive Solid Waste generated from various nuclear fuel cycle facilities and radiological laboratories of BARC Trombay. RSMS caters to safe collection of radioactive solid waste (Category-I, II & III), processing (Category-I) for amenable volume reduction, conditioning based on need and disposal in engineered disposal modules of Near Surface Disposal Facility.
\r\nThe facility comprises of two NSDF sites, namely RSMS and IRE at Trombay. Disposal operation at IRE site is completed and site is presently under surveillance. At RSMS, various processing system and disposal modules are under operations for safe and effective management of radioactive solid waste. RSMS houses various processing systems such as Compaction system for compressible waste; Conventional diesel fired Incinerator for Cellulosic Waste; Plasma based incineration for mixed combustible wastes including rubber and plastics; Disused Source collection, storage and disposal system; High active Spent Resin Fixation system in cement matrix etc.
\r\nThe facility also has various engineered modules, such as Stone Lined Trenches (SLT), Reinforced Concrete Trenches (RCT), Multi-tier Reinforced Disposal Module (MRDM), Tile Holes (TH) etc., for disposal of solid radioactive waste after imparting suitable treatment. Facility is also equipped with interim storage of Category-IV waste before its eventual treatment and/or disposal.
Caters to treatment of Low active effluents realising philosophy of 'Near Zero Discharge of Activity' and decontamination of contaminated Fuel Cut-End Rods, equipments/gadgets, protective wears realising 'Recycle and Reuse' concept.