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Document ID (ISN)104947
CIS number 06-419
ISSN - Serial title 1545-9624 - Journal of Occupational and Environmental Hygiene
Year 2005
Convention or series no.
Author(s) First M.W., Weker R.A., Yasui S., Nardell E.A.
Title Monitoring human exposures to upper-room germicidal ultraviolet irradiation
Bibliographic information May 2005, Vol.2, No.5, p.285-292. Illus. 7 ref.
Abstract The purpose of upper room ultraviolet germicidal irradiation is to interrupt the transmission of airborne infections by flooding the entire volume of premises above 2m with high-intensity ultraviolet radiation, while minimizing unintentional irradiance below this level to avoid eye and skin irritation. Air exchanges between the upper and lower room result in air disinfection of the occupied space. The objective of this study was to confirm that eye and skin exposures remain well below the recommended safe dose. Subjects wore a small photometer that recorded total ultraviolet dose during their normal routine. This value was compared with a hypothetical dose calculated from the highest measured eye-level irradiance. It was found that the observed doses were between one-third and one hundredth of the maximum eye-level irradiances.
Descriptors (primary) monitoring of ultraviolet radiation; biological hazards; disinfection of air; ultraviolet radiation
Descriptors (secondary) exposure evaluation; photometry; permissible radiation doses
Document type D - Periodical articles
Country / State or ProvinceJapan; USA
Subject(s) Radiation
Broad subject area(s) Physical hazards
Browse category(ies) Non-ionizing radiation
Biological hazards