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In-depth survey report of exposure to silica from demolition of plaster ceilings at Frank Messer and Sons Construction Company, Columbus Ohio, report no. CT-247-15b.

Authors
Echt-AS
Source
NIOSH 2002 Jan; :1-7
NIOSHTIC No.
20022173
Abstract
This report describes the exposures and controls that were evaluated during the interior demolition of a building. The tasks evaluated were the use of a track hoe to pull down plaster ceilings, the use of a skid-steer loader to handle the debris, and the use of garden hoses by laborers to suppress dust during those tasks and at the bottom of a debris dump chute inside the building. The control used during these tasks was the use of water to suppress dust. An evaluation of exposures during these tasks found that on the day sampling was conducted, three of five employees sampled exceeded the OSHA PEL for respirable dust. Two of five exceeded the NIOSH REL for respirable crystalline silica. Eight hour time weighted average exposures to respirable dust ranged from 1.7 to 6.1mg/m3. Eight hour time weighted average exposures to respirable quartz ranged from 0.037mg/m3 (based on two quartz samples between the limit of detection and the limit of quantitation) to 0.087mg/m3. These results probably reflect a reduction in exposure due to the use of water to suppress dust.
Keywords
Region-5; Dust-control; Dust-control-equipment; Dust-exposure; Dusts; Dust-suppression; Particulates; Particulate-dust; Airborne-particles; Airborne-dusts; Quartz-dust; Silica-dusts; Construction-workers; Construction-materials; Demolition-industry
CAS No.
14808-60-7
Publication Date
20020101
Document Type
Control Technology; Field Studies
Fiscal Year
2002
NTIS Accession No.
PB2002-105443
NTIS Price
A03
Identifying No.
CT-247-15b
NIOSH Division
DART
SIC Code
1795
Source Name
National Institute for Occupational Safety and Health
State
OH
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