In Situ Leach Uranium Milling Facilities

This book provides an overview of environmental activities related to uranium production based on survey responses from 29 countries.

As nuclear power plants reach the end of their life cycle and are closed, the uranium mining and milling facilities that have fed them will have to be decommissioned. This report provides information to governments to help plan and implement the decommissioning and closeout of such facilities along with the associated tailings impoundments, debris piles, leach fields, and unprocessed ore stockpiles. The goal is to enable a site to meet the radiological criteria either for unrestricted use or for long-term closeout under institutional control. Includes a glossary without pronunciation. No index. Distributed in the US by UNIPUB. Annotation copyright by Book News, Inc., Portland, OR

"In situ leach or leaching (ISL) or in situ recovery (ISR) mining has become one of the standard uranium production methods. Its application to amenable uranium deposits (in certain sedimentary formations) has been growing in view of its competitive production costs and low surface impacts. This publication provides an historical overview and shows how ISL experience around the world can be used to direct the development of technical activities, taking into account environmental considerations, and emphasizing the economics of the process, including responsible mine closure. The publication provides information on how to design, operate and regulate current and future projects safely and efficiently, with a view to maximizing performance and minimizing negative environmental impact."--Publisher's description.

From 1980 to 1993, the domestic production of uranium declined from almost 44 million pounds U3O8 to about 3 million pounds. This retrenchment of the U.S. uranium industry resulted in the permanent closing of many uranium-producing facilities. Current low uranium prices, excess world supply, and low expectations for future uranium demand indicate that it is unlikely existing plants will be reopened. Because of this situation, these facilities eventually will have to be decommissioned. The Uranium Mill Tailings and Radiation Control Act of 1978 (UMTRCA) vests the U.S. Environmental Protection Agency (EPA) with overall responsibility for establishing environmental standards for decommissioning of uranium production facilities. UMTRCA also gave the U.S. Nuclear Regulatory Commission (NRC) the responsibility for licensing and regulating uranium production and related activities, including decommissioning. Because there are many issues associated with decommissioning-environmental, political, and financial-this report will concentrate on the answers to three questions: (1) What is required? (2) How is the process implemented? (3) What are the costs? Regulatory control is exercised principally through the NRC licensing process. Before receiving a license to construct and operate an uranium producing facility, the applicant is required to present a decommissioning plan to the NRC. Once the plan is approved, the licensee must post a surety to guarantee that funds will be available to execute the plan and reclaim the site. This report by the Energy Information Administration (EIA) represents the most comprehensive study on this topic by analyzing data on 33 (out of 43) uranium production facilities located in Colorado, Nebraska, New Mexico, South Dakota, Texas, Utah, and Washington.