U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Ventilating containment structures during abrasive blasting.

Public Domain


Details

  • Personal Author:
    Mickelson RL
  • Description:
    Ventilated containment structures for protecting workers from exposure to lead (7439921) containing dusts while performing maintenance on steel structures coated with lead based paint were evaluated. The structures, designed by NIOSH, consisted of a containment system around a process tank at an oil refinery, and two containment structures at a bridge, where workers used abrasive blasting to remove old paint. At the oil refinery, a nylon reinforced polyethylene enclosure enclosed an aluminum scaffolding around the process tank. Exhaust ventilation was through three high efficiency air filters using pneumatic blowers. At the bridge site, the first containment structure was made of interconnected canvas tarps suspended from the top of the roadway down to the ground with an exposure volume of 5,600 cubic meters (m3). Ventilation was with two exhaust ducts suspended from a street light pole with no air supply inlets. The second containment was a 85m3 enclosure made of an alloy piping frame, rigid corrugated polycarbonate side panels, and an aluminum grate floor suspended from two adjacent I-beams under the bridge. Ventilation was through a supply air fan at one end and an exhaust duct and fan at the other. Workers in all three structures wore continuous flow loose fitted hood respirators. During blasting in the three structures the personal lead exposures ranged from 6,200 to 22,000 micrograms (microg) per m3 and area air lead exposures ranged from 10,000 to 15,000microg/m3. Lead concentrations inside the enclosures decreased rapidly after blasting. Area lead exposures measured outside the oil refinery structure and the large and small bridge enclosures averaged 1, 210, and 18microg/m3, respectively. The author concludes that general ventilation alone cannot effectively control airborne lead exposures generated during abrasive blasting of steel structures painted with lead based paint. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    8755-1985
  • Document Type:
    Text
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    DPSE - Division of Physical Sciences and Engineering
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    46-52
  • NIOSHTIC Number:
    nn:00238827
  • Citation:
    J Prot Coat Linings 1995 Jul; :46-52
  • CAS Registry Number:
    Lead (CAS RN 7439-92-1)
  • Federal Fiscal Year:
    1995
  • Peer Reviewed:
    False
  • Source Full Name:
    Journal of Protective Coatings & Linings
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
  • Download URL:
  • File Type:
    Filetype[PDF - 168.02 KB ]
PREVIOUS
ON THIS PAGE
Details
CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.

As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP