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Health hazard evaluation report: HETA-91-070-2194, Library of Congress, Washington, D.C.

Authors
Moss-CE; Cook-C
Source
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 91-070-2194, 1992 Mar; :1-25
NIOSHTIC No.
00206942
Abstract
In response to a request from the Library of Congress (SIC-8231), Washington, D.C., an evaluation was undertaken of possible exposure to electromagnetic radiation emitted by video display terminals (VDT) at the Madison Building. Measurements were taken in the Madison building on April 3 and July 8, 1991 at four worksites. The maximum x-ray radiation level range measured at the screen face was 2 to 6 counts per minute (cpm) and the maximum background activity measured in the outside hall was 3cpm. For comparison, a reading of 4000cpm is roughly equivalent to the maximum exposure level suggested for television receivers. Very low frequency (VLF) readings for electric and magnetic field strength levels at the facial position of the operators ranged from 1.1 to 7.0 volts per meter and 10 to 170 milliamperes per meter, respectively. The maximum induced currents from any of the four terminals as measured with hands on the keyboards, finger touching the screen, and with the hand placed flat on the screen were 0.0008, 0.0038, and 0.0463 milliamperes, respectively. The authors conclude that the electromagnetic radiation exposures as measured at any of these terminals was not of a level expected to cause adverse health effects.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-91-070-2194; Hazard-Unconfirmed; Region-3; Computer-equipment; Keyboard-operators; Radiation-exposure; Electromagnetic-radiation; Radiation-hazards; Video-display-terminals; Nonionizing-radiation;
Publication Date
19920301
Document Type
Field Studies; Hazard Evaluation and Technical Assistance
Fiscal Year
1992
NTIS Accession No.
PB92-193952
NTIS Price
A03
Identifying No.
HETA-91-070-2194
NIOSH Division
DSHEFS
SIC Code
8231
Source Name
National Institute for Occupational Safety and Health
State
WA; OH
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