• 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 Control Technology for Perchloroethylene in Dry Cleaning Shops at Ten Ten Cleaners, San Francisco, California
【24h】

In-Depth Survey Report: Evaluation of Control Technology for Perchloroethylene in Dry Cleaning Shops at Ten Ten Cleaners, San Francisco, California

机译：深入调查报告：加利福尼亚州旧金山十大清洁工厂干洗店全氯乙烯控制技术评估

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

摘要

NIOSH evaluated eight dry cleaning shops to determine the extent of exposure and the technological feasibility of controlling worker exposure to perchloroethylene (Perc). In this study, dry cleaning plants were selected and data taken to characterize worker exposure levels and control technology for 'fourth generation' closed-loop, dry-to-dry machines (with an integrated, in-line refrigerated condenser and a carbon absorber to recover Perc vapors during the dry cycle), and 'fifth generation' machines, having the same features as fourth generation machines plus an internal monitor/interlock system to prevent door opening at Perc concentrations above a set level. Full shift time-weighted average (TWA) and short duration. Ceiling and 15 minute Short Term Exposure Level (STEL) Perc exposures were measured on several workers in each shop. Information was collected at each dry cleaning plant to correlate Perc measurements with controls and equipment. Results of measurements at Ten Ten Cleaners indicate a range of 2,000 ppm and 0.2 to 60 ppm, with half the measurements of ceiling and STEL levels below 168 ppm and 4.2 ppm, respectively.

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