title: Modelling of the shielding capabilities of the existing solid radioactive waste storages at Ignalina NPP.
abstract: There is only one nuclear power plant in Lithuania--Ignalina NPP (INPP). The INPP operates two similar units with design electrical power of 1500 MW. The units were commissioned in 1983 and 1987 respectively. From the beginning of the INPP operation all generated solid radioactive waste was collected and stored at the Soviet type solid radwaste facility located at INPP site. The INPP solid radwaste storage facility consists of four buildings, namely building No. 155, No. 155/1, No. 157 and No. 157/1. The buildings of the INPP solid radwaste storage facility are reinforced concrete structures above ground. State Nuclear Safety Inspectorate (VATESI) has specified that particular safety analysis must be performed for existing radioactive waste storage facilities of the INPP. As part of the safety analysis, shielding capabilities of the walls and roofs of these buildings were analysed. This paper presents radiation shielding analysis of the buildings No. 157 and No. 157/1 that are still in operation. The buildings No. 155 and No. 155/1 are already filled up with the waste and no additional waste loading is expected.
authors.affiliation: Lithuanian Energy Institute, Breslaujos 3, LT-44403 Kaunas, Lithuania. smaizys@mail.lei.it
authors.forename: Arturas
authors.initials: A
authors.lastname: Smaizys
authors.forename: Povilas
authors.initials: P
authors.lastname: Poskas
authors.forename: Valdas
authors.initials: V
authors.lastname: Ragaisis
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008097:Lithuania; D015233:Models, Statistical; D009010:Monte Carlo Method; D009502:Neutrons; D017785:Photons; D011210:Power Plants; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods* / Q000592:standards; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods; D011850:Radioactive Waste / Q000032:analysis*; D012542:Scattering, Radiation; D018505:Waste Management / Q000295:instrumentation* / Q000379:methods
chemical_list: D011850:Radioactive Waste