Details:

Alternative Title:
J Photochem Photobiol B
Publisher's site:
http://dx.doi.org/10.1016/j.jphotobiol.2016.03.009
Personal Author:
Milonova, Sonya ; Rudnick, Stephen ; McDevitt, James ; Nardell, Edward ;
Milonova, Sonya ; Rudnick, Stephen ; McDevitt, James ; Nardell, Edward ; Less -
Description:
The threshold limit value (TLV) guideline for ultraviolet (UV) radiation specifies that irradiance measurements to ensure occupant safety be taken over an angle of 80° at the sensor. The purpose of this study was to evaluate the effect of an 80° field of view (FOV) tube on lower room UV-C irradiation measurements. Measurements were made in an experimental chamber at a height of 1.73m with and without an FOV tube. The FOV tube reduced the lower room irradiance readings by 18-34%, a statistically significant reduction compared to the bare sensor. An 80° FOV tube should be used for lower room irradiance measurements to comply with the TLV guideline. The resulting lower readings would allow more UV-C radiation in the upper room without compromising occupant safety. More UV-C radiation in the upper room could increase efficacy of UVGI systems for reducing transmission of airborne infectious diseases. In addition, recommendations are made to standardize lower room irradiance measurement techniques.
Subject:
[+]
Air Microbiology
Anti-Infective Agents
Article
Bacteria
Fungi
Occupant Safety Measurements
Occupational Exposure
Threshold Limit Value
Ultraviolet Germicidal Irradiation
Ultraviolet Rays

Source:
J Photochem Photobiol B. 159:88-92. ;
Pubmed ID:
27038734
Pubmed Central ID:
PMC4854786
Document Type:
Journal Article ;
Funding:
D43 TW009379/TW/FIC NIH HHS/United States ; R01 OH009050/OH/NIOSH CDC HHS/United States ;
D43 TW009379/TW/FIC NIH HHS/United States ; R01 OH009050/OH/NIOSH CDC HHS/United States ; Less -
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:3e5a092cc29894fe1f96a52572d8203701d7f07da34dfc0d77b5c484914ed48f
File Type:

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