Occupant UV Exposure Measurements for Upper-Room Ultraviolet Germicidal Irradiation

Milonova, Sonya; Rudnick, Stephen; McDevitt, James; Nardell, Edward

doi:10.1016/j.jphotobiol.2016.03.009

Back to Previous Page

- Add this to...
- Twitter
- Facebook
- Google Bookmarks
- LinkedIn

Occupant UV Exposure Measurements for Upper-Room Ultraviolet Germicidal Irradiation

Published Date:

Mar 11 2016

Publisher's site:

http://dx.doi.org/10.1016/j.jphotobiol.2016.03.009 New Site Icon

Source:

J Photochem Photobiol B. 159:88-92.

[PDF-224.56 KB]

Details:

Personal Authors:

Milonova, Sonya ; Rudnick, Stephen ; McDevitt, James ; Nardell, Edward ;

Keywords:

[+]

Pubmed ID:

27038734

Pubmed Central ID:

PMC4854786

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.

Document Type:

Journal Article

Collection(s):

CDC Public Access

Funding:

D43 TW009379/TW/FIC NIH HHS/United States
R01 OH009050/OH/NIOSH CDC HHS/United States

Supporting Files:

	nihms774371f4.jpg	image/jpeg
	nihms774371.nxml	application/octet-stream
	nihms774371f1.gif	image/gif
	nihms774371f1.jpg	image/jpeg
	nihms774371f2.gif	image/gif
	nihms774371f2.jpg	image/jpeg
	nihms774371f3.gif	image/gif
	nihms774371f3.jpg	image/jpeg
	nihms774371f4.gif	image/gif

No Related Documents.

You May Also Like:

Evaluation of environmental controls at a homeless shelter associated with a tuberculosis outbreak – Texas

Personal Author:

Martin, Stephen B.; Lawrence, Brent; Mead, Kenneth R.;

Corporate Author:

National Institute for Occupational Safety and Health.

Published:

May 2014

Series:

NIOSH health hazard evaluation report ; 2013-0145-3209

Description:

On May 22, 2013, the National Institute for Occupational Safety and Health (NIOSH) received a request for technical assistance from the shelter manager at a large homeless shelter in Dallas, Texas, linked to an ongoing tuberculosis outbreak. The requ...

File Type:

[PDF - 1.78 MB]
Environmental control for tuberculosis; basic upper-room ultraviolet germicidal irradiation guidelines for healthcare settings guide

Personal Author:

Whalen, John J.

Corporate Author:

National Institute for Occupational Safety and Health, Division of Applied Research and Technology

Published:

March 2009

Series:

DHHS publication ; no. (NIOSH) 2009-105

Description:

"Although the number of cases of tuberculosis (TB) in the United States has declined in the last several years, there is still a continuing need to protect healthcare workers and the public from risk of infection. One of the primary risks to healthca...

File Type:

[PDF - 45.23 MB]
Airborne Infection with Bacillus anthracis—from Mills to Mail

Personal Author:

Fennelly, Kevin P.; Davidow, Amy L.; Miller, Shelly L.; Connell, Nancy; Ellner, Jerrold J.;

Published:

Jun 2004

Source:

Emerg Infect Dis. 10(6):996-1001.

Description:

The lack of identified exposures in 2 of the 11 cases of bioterrorism-related inhalation anthrax in 2001 raised uncertainty about the infectious dose and transmission of Bacillus anthracis. We used the Wells-Riley mathematical model of airborne infec...

File Type:

[PDF - 129.23 KB]
Influence of Bioaerosol Source Location and Ceiling Fan Direction on Eggcrate Upper-room Ultraviolet Germicidal Irradiation

Personal Author:

Rahman, Sumayah F.; Rudnick, Stephen N.; Milonova, Sonya P.; McDevitt, James J.; Nardell, Edward A.;

Published:

Jul 20 2014

Source:

Br J Appl Sci Technol. 4(26):3856-3861.

Description:

Background : Eggcrate upper-room ultraviolet germicidal irradiation (UVGI), an engineering control method for reducing the airborne transmission of infectious diseases, was recently developed as an alternative to conventional upper-room UVGI using co...

File Type:

[PDF - 199.47 KB]
A new dual-collimation batch reactor for determination of ultraviolet inactivation rate constants for microorganisms in aqueous suspensions

Personal Author:

Martin, Stephen B.; Schauer, Elizabeth S.; Blum, David H.; Kremer, Paul A.; Bahnfleth, William P.; Freihaut, James D.;

Published:

Jul 25 2016

Source:

J Photochem Photobiol B. 162:674-680.

Description:

We developed, characterized, and tested a new dual-collimation aqueous UV reactor to improve the accuracy and consistency of aqueous k-value determinations. This new system is unique because it collimates UV energy from a single lamp in two opposite ...

File Type:

[PDF - 2.03 MB]