• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Environmental innovations in the metals industry for the 21st century >MACT Residual Risk Issues Facing the Metals Industry
【24h】

MACT Residual Risk Issues Facing the Metals Industry

机译：MACT面对金属行业的残留风险问题

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

As a result of the Clean Air Act Amendments of 1990, technology-based MACT standards to control hazardous air pollutant (HAP) emissions from approximately 150 source categories will be promulgated. These include 14 source categories for ferrous and nonferrous metal processing. Within eight years following the promulgation of a MACT standard, EPA must assess residual HAP emissions and their associated risks, in order to determine whether any unacceptable health risks remain after MACT implementation.rnThis paper addresses some of the key technical issues facing the metals industry in residual risk assessments and summarizes the tiered residual risk assessment scheme recently recommended to EPA by the Presidential/Congressional Commission on Risk Assessment and Risk Management These recommendations support the application of comprehensive multipollutant, multimedia, and multipathway health (i.e., carcinogenic and non-carcinogenic) and ecological risk assessments. This paper reviews the current EPA guidance for conducting these multipathway assessments, as well as the limitations of these techniques. The paper will also present the methodology used in recently completed air pathway residual risk assessments for coke plants, in which a number of refinements to EPA risk evaluation techniques were applied, including: 1) the use of an innovative air dispersion modeling technique to more accurately characterize the buoyancy-induced plume rise due to convective heat transfer from coke battery surfaces and hot fugitive emissions, and 2) the incorporation of updated inhalation exposure factors.
机译：作为1990年《清洁空气法》修正案的结果，将颁布基于技术的MACT标准，以控制来自大约150个排放源类别的有害空气污染物（HAP）排放。其中包括用于黑色金属和有色金属加工的14种来源类别。在MACT标准颁布后的八年内，EPA必须评估残留的HAP排放及其相关风险，以确定在MACT实施后是否仍存在任何不可接受的健康风险。rn本文讨论了金属行业面临的一些关键技术问题。残留风险评估，并总结了总统/国会风险评估和风险管理委员会最近向EPA建议的分层残留风险评估方案。这些建议支持综合多污染物，多媒体和多路径健康（即致癌和非致癌）的应用和生态风险评估。本文回顾了目前进行这些多径路评估的EPA指南，以及这些技术的局限性。本文还将介绍在焦炭厂最近完成的空气通道残留风险评估中使用的方法，其中对EPA风险评估技术进行了许多改进，包括：1）使用创新的空气扩散建模技术以更准确地进行表征了由于焦炭电池表面对流传热和热逃逸性排放而导致的浮力引起的羽流上升，以及2）纳入了更新的吸入暴露因子。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号