ILO Home
Go to the home page
Site map | Contact us Franšais | Espa˝ol

CISDOC database

Document ID (ISN)105122
CIS number 06-649
ISSN - Serial title 1545-9624 - Journal of Occupational and Environmental Hygiene
Year 2005
Convention or series no.
Author(s) Harris M.K., Ewing W.M., Longo W., DePasquale C., Mount M.D., Hatfield R., Stapleton R.
Title Manganese exposures during shielded metal arc welding (SMAW) in an enclosed space
Bibliographic information Aug. 2005, Vol.2, No.8, p.375-382. Illus. 24 ref.
Abstract This study evaluated the effectiveness of various rates of dilution ventilation in controlling welder exposures to manganese in shielded metal arc welding (SMAW) fumes when working in enclosed or restricted spaces. Personal and area monitoring using total and respirable sampling techniques, along with multiple analytical techniques, was conducted during the welding operations. Results indicated that 2000 cubic feet per minute (CFM) general dilution ventilation may not be a sufficient means of controlling respirable manganese exposures for either welders or their helpers in restricted or enclosed spaces. In the absence of site-specific monitoring data indicating otherwise, it is prudent to employ respiratory protection or source capture ventilation rather than depending solely on 2000 CFM general dilution ventilation in enclosed spaces.
Descriptors (primary) shielded-arc welding; manganese and compounds; exhaust ventilation; welding fumes; work in confined spaces
Descriptors (secondary) local exhaust; personal sampling; manganese; determination in air; air exchange rate; exposure evaluation; respirators; respirable dust
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Metal production and metalworking
Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Ventilation
Welding and cutting
Inorganic substances
Confined spaces