Bevatron (Class 4), Lawrence Berkeley National Laboratory, USA [Technical and organizational aspects of accelerator decommissioning] (Russian Edition)

The project consisted of the deactivation and demolition of Building 51, Building 51A and the Bevatron accelerator. Building 51, which housed the Bevatron, was an approximately 1.16 ha steel frame structure built in the early 1950s. The building was located in the west–central part of LBNL and occupied approximately 0.9 ha. The project scope also included the disposal of approximately 30 000 t of radiologically activated material, remediation of contaminated soil within the building footprint and engineered enforcements of containing walls. The objectives of the project were to demolish the largest building at the laboratory, remove hazards posed by the structure and the accelerator, reduce the burden on laboratory resources, and make the Building 51 site available for future reuse. The project was completed on schedule in February 2012, and was able to return more than US $2.4 million to the Office of Science (the approved total project cost was US $50 million at Critical Decision (CD)-2/3, and the final total project cost was US $47.6 million at CD-4). The project also met the waste diversion goal of more than 75% of recyclable waste. Although Building 51 was a decaying facility and there were inherent demolition hazards, more than 230 000 hours were worked with no lost time and only one recordable injury.