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

CISDOC database

Document ID (ISN)58204
CIS number 92-940
ISSN - Serial title Journal of Working Environment
Year 1992
Convention or series no.
Author(s) Harie M., Ashida T., Mori Y., Ohmori K.
Title Local ventilation systems in welding workshops - Improvements of the workplace environment and problems
Original title Yōsetsu sagyōba ni dōnyū sareta kyokusho haiki sōchi - kaizen no kōka to mondaiten ni tsuite [in Japanese]
Bibliographic information 1 Jan. 1992, Vol.13, No.1, p.56-62. Illus. 10 ref.
Abstract The working environment in 4 welding workshops of sash window manufacturers was measured 10 times over a period of 5yrs, during which time the effects of introducing various types of ventilation systems and their performance in removing welding fumes from the workplace environment were analysed. The workplace environment was evaluated by area and personal monitoring for airborne particles, which were analysed in terms of mass concentration and free silica content (determined by X-ray diffraction). The effects of the ventilation systems were also monitored with a continuous direct reading dust meter. Enclosure hoods on robot welders and canopy hoods with curtains installed above welding tables improved the workplace significantly. Small portable exterior hoods attached to welding torches were more effective than expected, but were not favoured by the workers due to the increase in torch weight.
Descriptors (primary) local exhaust; welding and cutting; ventilation systems; welding fumes
Descriptors (secondary) long-term study; blowpipes
Document type D - Periodical articles
Country / State or ProvinceJapan
Subject(s) Metal production and metalworking
Broad subject area(s) Chemical safety
Browse category(ies) Welding and cutting