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

CISDOC database

Document ID (ISN)62104
CIS number 94-617
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1993
Convention or series no.
Author(s) Bowes S.M., Mason E.G., Corn M.
Title Confined space ventilation: Tracer gas analysis of mixing characteristics
Bibliographic information Nov. 1993, Vol.54, No.11, p.639-646. Illus. 10 ref.
Abstract Study of the mixing effectiveness of dilution ventilation of confined spaces (the hold of petrochemical vessels). The tracer gas sulfur hexafluoride (SF6) was used as an experiment, with an infrared analyzer capable of sampling at 90L/min used as the monitoring instrument, and smoke tubes and anemometry used to assess air circulation. It was found that air in the vessels showed mixing that was much slower than predicted by theory, due to the complicated dynamics of internal air circulation. Tracer gas studies are shown to be useful for the assessment of air mixing inside confined spaces.
Descriptors (primary) tracer gases; ventilation; confined spaces; aerodynamics
Descriptors (secondary) experimental determination
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Confined spaces