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Document ID (ISN)58742
CIS number 92-1685
ISSN - Serial title 0017-9078 - Health Physics
Year 1991
Convention or series no.
Author(s) Chou B.R., Cullen A.P.
Title Evaluation of ocular hazards due to electric arc flash at an in-line switch
Bibliographic information Oct. 1991, Vol.61, No.4, p.473-479. Illus. 15 ref.
Abstract The ocular damage resulting from operation of a solid blade pole-mounted in-line electrical switch at between 16 and 17kV with current loads between 38A and 340A was investigated. Spectroradiometric data for the electric arcs produced as the switch was opened were obtained over the waveband 200-1500nm. The eyes of rabbits were exposed to the flash arc at a distance of 2m. The ocular tissues were assessed clinically and histologically up to 48h postexposure. Threshold damage was clinically detectable only in eyes exposed to a 340A arc. It is concluded that at the normal current loads on a 17kV electric power transmission line, the principal oculovisual hazards are due to molten metal fulminated from the switch by the arc, and after-images due to the bright visible light flash. At a working distance of 2m the ultraviolet ocular hazard is negligible. Adequate eye protection is provided by clear polycarbonate safety lenses.
Descriptors (primary) electric arc; electric power transmission; eye injuries; safety spectacles; overhead electric lines
Descriptors (secondary) molten materials; tissue damage; animal experiments; electric power generation
Document type D - Periodical articles
Country / State or ProvinceCanada
Subject(s) Electricity
Broad subject area(s) Electrical safety
Browse category(ies) Electricity
Face and eye protection