Utilities and ranking of the preclosure attributes of the proposed high-level radioactive waste repository are examined, in order to provide insights into the propriety of using this approach for this type of decision and an assessment of the adequacy of the analysis itself. The postclosure utilities obtained in the previous study were greater than 80% for all five sites considered, but showed a greater spread than those in the MUA. The preclosure multiattribute utilities also show a wider spread than in the MUA.

A method is presented for determining the relative favorability<br/>of geologically complex areas for isolating high-level<br/>radioactive wastes. In applying the method to the northeastern region<br/>of the United States, seismieity and tectonic activity were the<br/>screening criteria used to divide the region into three areas of<br/>increasing seismotectonic risk. The following criteria, specified by<br/>the U.S.

At the present time in Canada, high-level radioactive waste is accumulating in the form of irradiated, used fuel from research reactors and nuclear power generating stations. The used fuel bundles are kept in water-filled bays at each of the reactor sites. Because water is both a radiation barrier and an effective coolant, this system provides a safe means of storage. Used fuel is also safely stored above ground in dry concrete canisters in several Canadian locations.

This summary volume outlines results that are covered in more detail in the final report of the Spent-Fuel Test-Climax project. The project was conducted between 1978 and 1983 in the granite Climax stock at the Nevada Test Site. Results indicate that spent fuel can be safely stored for periods of years in this host medium and that nuclear waste so emplaced can be safely retrieved. We also evaluated the effects of heat and radiation (alone and in combination) on emplacement canisters and the surrounding rock mass.

The Nuclear Waste Policy Act of 1982 (the Act), established a step-by-step process for the siting of the nation&#39;s first repository for high-level radioactive waste and spent fuel. The Act gave the Department of<br/>Energy (DOE) the primary responsibility for conducting this siting process.

A general strategy for the exploration of crystalline rock masses in the<br/>eastern United States for the identification of potential sites for high-level<br/>radioactive waste repositories has been generated by consideration of the<br/>Department of Energy (DOE) Siting Guidelines, available information on these<br/>crystalline rocks, and the capabilities and limitations of various exploration<br/>methods.

Department of Interior Comments on Environmental Assessments for Nuclear Waste Repositories at the Deaf Smith and Swisher County Sites, Texas

The Crystalline Repository Project (CRP) of the Department of Energy&#39;s Civilian Radioactive Waste Management Program is responsible for identifying sites which could be considered by the Department for construction and operation of the second deep geologic repository for permanent disposal of high-level radioactive waste. The CRP is currently evaluating exposed and near surface crystalline rock bodies in three geographic regions in an effort to identify potentially suitable rock bodies for continued evaluations and eventual field investigations.

The U.S. Geological Survey&#39;s program for geologic and hydrologic evaluation of physiographic provinces to identify areas potentially suitable for locating repository sites for disposal of high-level nuclear wastes was announced to the Governors of the eight States in the Basin and Range Province on May 6, 1981. Representatives of Arizona, California, Idaho, New Mexico, Nevada, Oregon, Texas, and Utah, were invited to cooperate with the Federal Government in the evaluation process.