[en] The Nevada Nuclear Waste Storage Investigations project has as one of its principal objectives the conceptual design of the buildings and facilities that will be required for a commercially generated radioactive waste repository. This report has been prepared for use by the repository designers in the conceptual design of the high-level (Volume I) and transuranic (Volume II) waste-handling facilities and equipment. This report contains a listing of repository operations tasks and the anticipated worker radiation exposure. All annual exposures are below the 5 rem permissible dose equivalent limit with seven worker positions exceeding the design objective of 1 rem. These worker exposures will be reduced by performing tasks remotely