• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >In-Depth Survey Report: Evaluation of a Volvo Milling Machine Equipped with a Wet Drum Designed to Reduce Respirable Crystalline Silica Exposure During Pavement Milling.
【24h】

In-Depth Survey Report: Evaluation of a Volvo Milling Machine Equipped with a Wet Drum Designed to Reduce Respirable Crystalline Silica Exposure During Pavement Milling.

机译：深入调查报告：评估配备湿桶的沃尔沃铣床，旨在减少路面铣削过程中可吸入的结晶二氧化硅暴露。

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

From August 17-18, 2012, National Institute for Occupational Safety and Health (NIOSH) researchers and the Silica/Milling-Machines Partnership coordinated by the National Asphalt Pavement Association (NAPA) conducted field testing of a Volvo MT-2000 cold milling machine equipped with a wet drum designed to reduce respirable crystalline silica concentrations. The wet drum design uses gravity to release water from inside the drum through nozzles to the cutting surface to suppress dust. The effectiveness of the dust controls examined in this study was evaluated by measuring the reduction in the respirable dust and respirable quartz concentrations in area samples collected during a typical milling job. The test consisted of replicate short-term milling trials (nominally about 10 minutes each in duration). During a trial, the milling machine removed approximately 2-inches of depth of the asphalt surface while operating either its existing production water-spray system (the 'baseline configuration'), or its wet drum configuration. Respirable-dust concentrations were measured at ten selected locations around the milling machine using continuous real-time data-logging dust monitors. The results from six key monitoring locations (from among the ten) together are considered to best represent dust-emission rates, because they surround the low-to-the-ground dust-generating areas of the machine where the modified emission controls are located.

著录项

相似文献

  • 外文文献
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