Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/1080213 |
| 报告编号 | PNL-3767 |
| 来源ID | OSTI_ID: 1080213 |
| MILDOS - A Computer Program for Calculating Environmental Radiation Doses from Uranium Recovery Operations | |
| Strange, D. L.; Bander, T. J. | |
| 英文摘要 | The MILDOS Computer Code estimates impacts from radioactive emissions from uranium milling facilities. These impacts are presented as dose commitments to individuals and the regional population within an 80 km radius of the facility. Only airborne releases of radioactive materials are considered: releases to surface water and to groundwater are not addressed in MILDOS. This code is multi-purposed and can be used to evaluate population doses for NEPA assessments, maximum individual doses for predictive 40 CFR 190 compliance evaluations, or maximum offsite air concentrations for predictive evaluations of 10 CFR 20 compliance. Emissions of radioactive materials from fixed point source locations and from area sources are modeled using a sector-averaged Gaussian plume dispersion model, which utilizes user-provided wind frequency data. Mechanisms such as deposition of particulates, resuspension. radioactive decay and ingrowth of daughter radionuclides are included in the transport model. Annual average air concentrations are computed, from which subsequent impacts to humans through various pathways are computed. Ground surface concentrations are estimated from deposition buildup and ingrowth of radioactive daughters. The surface concentrations are modified by radioactive decay, weathering and other environmental processes. The MILDOS Computer Code allows the user to vary the emission sources as a step function of time by adjustinq the emission rates. which includes shutting them off completely. Thus the results of a computer run can be made to reflect changing processes throughout the facility's operational lifetime. The pathways considered for individual dose commitments and for population impacts are: 鈥?Inhalation 鈥?External exposure from ground concentrations 鈥?External exposure from cloud immersion 鈥?Ingestioo of vegetables 鈥?Ingestion of meat 鈥?Ingestion of milk 鈥?Dose commitments are calculated using dose conversion factors, which are ultimately based on recommendations of the International Commission on Radiological Protection (ICRP). These factors are fixed internally in the code, and are not part of the input option. Dose commitments which are available from the code are as follows: 鈥?Individual dose commitments for use in predictive 40 CFR 190 compliance evaluations (Radon and short-lived daughters are excluded) 鈥?Total individual dose commitments (impacts from all available radionuclides are considered) 鈥?Annual population dose commitments (regional, extraregional, total and cummulative). This model is primarily designed for uranium mill facilities, and should not be used for operations with different radionuclides or processes. |
| 出版年 | 1981 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS ; 54 ENVIRONMENTAL SCIENCES |
| URL | http://www.osti.gov/scitech/servlets/purl/1080213 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/263012 |
| 推荐引用方式 GB/T 7714 | Strange, D. L.,Bander, T. J.. MILDOS - A Computer Program for Calculating Environmental Radiation Doses from Uranium Recovery Operations,1981. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Strange, D. L.]的文章 |
| [Bander, T. J.]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Strange, D. L.]的文章 |
| [Bander, T. J.]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Strange, D. L.]的文章 |
| [Bander, T. J.]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
