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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Al Alfy, Ibrahim Mohammad |
| Spatial Coverage | Egypt |
| Description | Author Affiliation: Al Alfy IM ( Nuclear Materials Authority of Egypt, B.O. Box. 530 Al Maadi, Cairo, Egypt. Electronic address: ibelalfy@yahoo.com.) |
| Abstract | A set of ten radioactive well-logging calibration pads were constructed in one of the premises of the Nuclear Materials Authority (NMA), Egypt, at 6th October city. These pads were built for calibrating geophysical well-logging instruments. This calibration facility was conducted through technical assistance and practical support of the International Atomic Energy Agency (IAEA) and (ARCN). There are five uranium pads with three different uranium concentrations and borehole diameters. The other five calibration pads include one from each of the following: blank, potassium, thorium, multi layers and mixed. More than 22 t of various selected Egyptian raw materials were gathered for pad construction from different locations in Egypt. Pad's site and the surrounding area were spectrometrically surveyed before excavation for the construction process of pad-basin floor. They yielded negligible radiation values which are very near to the detected general background. After pad's construction, spectrometric measurements were carried out again in the same locations when the exposed bore holes of the pads were closed. No radioactivity leakage was noticed from the pads. Meanwhile, dose rate values were found to range from 0.12 to 1.26 mS/y. They were measured during the opening of bore holes of the pads. These values depend mainly upon the type and concentration of the pads as well as their borehole diameters. The results of radiospectrometric survey illustrate that the specification of top layers of the pads were constructed according to international standards. |
| File Format | HTM / HTML |
| ISSN | 09698043 |
| Volume Number | 82 |
| e-ISSN | 18729800 |
| Journal | Applied Radiation and Isotopes |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-12-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Nuclear Medicine Radioactive Pollutants Analysis Calibration Egypt Facility Design And Construction Geological Phenomena Humans Mining Potassium Radioisotopes Radiation Monitoring Soil Pollutants, Radioactive Spectrometry, Gamma Thorium Uranium Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Radiation |
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