• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >NIOSH Health Hazard Evaluation Report: HETA No. 2003-0237-2986, Morton Metalcraft, Welcome, North Carolina, December 2005
【24h】

NIOSH Health Hazard Evaluation Report: HETA No. 2003-0237-2986, Morton Metalcraft, Welcome, North Carolina, December 2005

机译：NIOsH健康危害评估报告：HETa编号2003-0237-2986，morton metalcraft，欢迎，北卡罗来纳州，2005年12月

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

摘要

On April 25, 2003, the National Institute for Occupational Safety and Health (NIOSH) received a confidential employee request for a health hazard evaluation (HHE) at Morton Metalcraft in Welcome, North Carolina. The request concerned potential exposures to emissions from a plasma cutter. In particular, the plasma cutter produced a dense smoke that was reported to circulate throughout the facility, enhanced by an inadequate ventilation system. Employees associated exposure to the smoke with health problems including sore throat, runny nose, eye irritation, coughing, migraines, and vomiting. On February 25, 2004, an industrial hygienist and medical officer from NIOSH conducted an initial site visit to better understand the facilitys processes and procedures and to plan a return site visit to conduct sampling. Before the return site visit, the use of the plasma cutter was discontinued at the facility. Concerns of exposure to welding fumes, however, continued to be expressed, as well as continuing reports of inadequate ventilation, particularly during the winter months when many of the facilitys doors and windows are closed. On March 7-10, 2005, a site visit was conducted to perform sampling for welding fumes, including individual metals, carbon monoxide, and ozone. Confidential employee interviews were conducted with a random sample of employees. Exposures to metals in the welding fumes were below applicable occupational exposure limits (OELs). For personal breathing zone (PBZ) and area air samples, the most prominent metal collected was iron. The PBZ samples with the highest airborne concentrations of iron (4.0 milligrams per cubic meter (mg/m3) and 3.7 mg/m3) were less than half of the Occupational Safety and Health Administration (OSHA) permissible exposure limit (PEL) of 10 mg/m3, but were nearing the NIOSH recommended exposure limit (REL) of 5.0 mg/m3. Time-weighted average (TWA) concentrations of carbon monoxide (CO) were below both the NIOSH REL and the OSHA PEL. Instantaneous readings for ozone did not reveal levels above the NIOSH REL. Confidential interviews did reveal complaints of eye, nose, and throat irritation, with some reported to be work-related. Individuals with symptoms reported welding or working in the vicinity of welding activities as their main job duties.

著录项

相似文献

  • 外文文献
  • 中文文献
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