Modern Work Protection with the Shotcrete Construction Method under Overpressure.

Details

• Personal Author:
  Goenner D
• Description:
  A review was presented of the use of shotcreting to construct urban traffic tunnels in the Federal Republic of Germany. High dust levels involved in shotcreting, rock excavating and conveying operations have been noted to result in poor air and visibility conditions. The work has often been conducted in long, largely narrow and closed spaces. Studies have been conducted to provide information on whether harmful mineral dusts under overpressure constituted a greater health hazard than atmospheric pressure. Several animal experiments have been conducted and in the preliminary trials it was determined that the inhalation of dust containing quartz (14808607) at an overpressure of 1.5 bar for a period of 6 months resulted in increased typical quartz induced lesions of mediastinal lymph nodes. Additional studies were then sought using primates under conditions similar to those prevailing at construction sites. The shotcrete dust has been deemed a health hazard for two primary reasons. First, the dust has been observed to often contain fine mineral dusts containing in some cases considerable amounts of quartz, which were added with the sand, the accelerating agents and the filler, and due to their high alkalinity with a pH value around 13, all accelerating agents must be regarded as caustic substances.
• Subjects:
  Accidents, Occupational Agriculture Farmers Occupational Health Safety Workplace
• Keywords:
  Construction Industry Construction Workers Dust Exposure Lung Function Mineral Dusts Occupational Hazards Respiratory System Disorders Tunneling Tunnel Workers
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Conference/Symposia Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  525-528
• NIOSHTIC Number:
  nn:00198456
• Citation:
  Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 90-108, 1990 Sep; (Part I):525-528
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7)
• Federal Fiscal Year:
  1990
• Peer Reviewed:
  False
• Part Number:
  I
• Source Full Name:
  Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9b5f025a6f24f3ee0287a4104e1a45280438322ff0b9c9708b4ddd37e289a9dfefa308174bd4797c631e34918427332717033916fc970e4932b31c4a32a57ff7
• Download URL:
  https://stacks.cdc.gov/view/cdc/180519/cdc_180519_DS1.pdf
• File Type:
  [PDF - 113.97 KB ]