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1、英语原文英语原文World Distribution of Uranium Deposits (UDEPO) with Uranium Deposit ClassificationFOREWORDHaving comprehensive information on the worldwide uranium deposits is crucial for implementation of significant nuclear power programmes in the world, especially with the increasing interest in nuclear
2、power and concerns about the supply of energy resources. Starting from the early years of the development of nuclear energy for peaceful uses, the International Atomic Energy Agency has published numerous reports on different types of uranium deposits, their geological characteristics and geographic
3、al distribution. With the increased amount of information available on uranium deposits throughout the world, the IAEA was able to establish an electronic database and publish it in the form of an Atlas in 1995. The atlas later was supported with a World Guidebook to Accompany IAEA Map: World Distri
4、bution of Uranium Deposits, in the form of a databook in 1996. The name of the database was World Distribution of Uranium Deposits (UDEPO). The UDEPO database was revised and expanded in 2004 to store to provide more detailed information on uranium geology and technical characteristics of the deposi
5、ts. The revised database has been published on the internet since 2004. The database and its web site are being updated continuously. This report and its attached CD-ROM contain information on 878 uranium deposits worldwide and reflect a snapshot of the database as of end of 2008. The database itsel
6、f is being updated continuously. The reader can access the most up to date information at www- nfcis.iaea.org. The IAEA wishes to thank the consultants who took part in the preparation of the UDEPO database. The IAEA is also grateful to the Member States and individual organizations for their genero
7、us support in providing experts and data to make this database more complete. The IAEA officer responsible for this publication was M. Ceyhan of the Division of Nuclear Fuel Cycle.1. INTRODUCTION1.1. BackgroundIn 1996, the IAEA published the Guidebook to Accompany IAEA Map: World distribution of Ura
8、nium Deposits (the Guidebook). This publication, which was the culmination of a process that began in 1990, introduced a descriptive deposit classification that expanded upon the classification used in the OECD/NEA-IAEA Red Book. Experts from six countries and from the IAEA collaborated on establish
9、ing the deposit classification. They also contributed information on a total of 582 deposits worldwide, and provided summary information on these deposits that became part of the Guidebook including their location, status (operating, dormant, depleted, etc.), resources (within a specific resource ra
10、nge e.g. 1 500 to 5 000 t U), average grade (within a grade range e.g. 0.030.10% U), geologic age, host rocks and tectonic setting.Provision is also made in the database to record references relating to the deposits and to include maps and photos of deposits. To have been included in the database, a
11、 deposit must have minimum resources of 500 t U at an average of 0.03% U or greater (note: exceptions to these guidelines have been allowed in a small number of cases where small deposits occur near operating or proposed production centres). The deposit-specific information, a map showing deposit lo
12、cations 1 and a discussion of the new deposit classification were published in the 1996 Guidebook 2. The Guidebook and the database on which it is based have come to be known collectively as UDEPO. The database was created on a computer based system to allow publishing above mentioned product easily
13、.Major modification has been implemented on UDEPO database in 2004. The database has been moved to MS SQL relational database server to allow building client/server architecture applications so that multiple users are able to access to the database at the same time. Another advantage of having datab
14、ase on the server is ability to update continuously. This has also allowed publishing the database through the internet. A web application has been developed and made available to the public access in 2004 (http:/www-nfcis.iaea.org/) 3. The UDEPO database and its web site have been continuously upda
15、ted and improved since then. As of end of 2008 there are 873 deposits recorded in the database. 1.2. Purpose and Scope of UDEPOIn 2002, the IAEA began an effort to integrate all nuclear fuel cycle related databases and computer simulations to make them more readily accessible to the Member States. A
16、 consultants meeting was held in 2003 to establish guidelines for restructuring UDEPO to ensure that it would be compatible with the integrated database approach. Assembling UDEPO data into a new structure began in 2003. A website, which was developed to publish the database, became available to the public in February 2004. The site has been periodically revised based on feedback from users and recommendations from consultants. A consultants meeting was
