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Control of methylene chloride-furniture stripping dip tank.

Authors
Hall-RM; Martinez-KF; Jensen-PA
Source
Appl Occup Environ Hyg 1995 Mar; 10(3):188-195
NIOSHTIC No.
00226066
Abstract
A local exhaust ventilation system designed to control exposure of furniture stripping workers to methylene-chloride (75092) fumes was described. A new ventilation system was developed by NIOSH researchers for a furniture stripping facility after it was found that the ventilation system installed by the owners of the facility decreased methylene-chloride levels from 2,160 parts per million (ppm) to 230ppm, which still exceeded the OSHA permissible exposure limit of 25ppm. The design and construction of a slotted hood ventilation system was described. After installation of the new system around the stripping area, air samples were evaluated for methylene-chloride, methanol (67561), toluene (108883), perchloroethylene (127184) and 1,1,1-trichloroethane (71556). No perchloroethylene was detected and 1,1,1-trichloroethane was not detected in 65% of the samples with the others containing no more than 5ppm. Breathing zone samples contained up to 25ppm methanol. Methylene-chloride levels during stripping and rinsing operations fell to 59ppm with the use of the new system and to 13ppm when only stripping operations were being performed. The installation of a local ventilation system in the rinsing area was recommended.
Keywords
NIOSH-Author; Occupational-exposure; Exposure-levels; Furniture-industry; Furniture-workers; Furniture-repair; Exhaust-ventilation; Ventilation-equipment
CODEN
AOEHE9
CAS No.
75-09-2; 67-56-1; 108-88-3; 127-18-4; 71-55-6
Publication Date
19950301
Document Type
Journal Article
Fiscal Year
1995
NTIS Accession No.
NTIS Price
Issue of Publication
3
ISSN
1047-322X
Source Name
Applied Occupational and Environmental Hygiene
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