Industrial lighting / Commonwealth of Australia Department of Labour and National Service, Industrial Welfare Division.

Date:
1945
Catalogue details

Licence: In copyright

Credit: Industrial lighting / Commonwealth of Australia Department of Labour and National Service, Industrial Welfare Division. Source: Wellcome Collection.

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    ILLUMINATION SUITABLE FOR A ROUGH TASK WOULD BE INADEQUATE FOR A FINE TASK. ee Nil) TNA GAPE RSE L EON AN EGA REFLECTED GLARE n c Ps nN > a mm BS) © = i772) =o m7 io] fyyetseesterenencennoescee aurea gay EXPOSED LAMPS CAUSE GLARE AND EYE- STRAIN. [| _ == \ INADEQUATE REFLECTORS WITH EXPOSED LAMPS CAUSE GLARE. ST al AVOID PARES LAMPS IN OPEN Bee dee NEAR WORK- TASK. Page 10 wlll A. SUMMARY 1. Provide sufficient light on each work-task, 4 Minimum standards are prescribed in foot-— candles for tasks varying in degrees of dif- ficulty. When these foot-candle values are applied with lighting of good quality, working considerably improved. 2. Prevent working in a pool of light with surrounding gloom. : General lighting should be provided through- out areas where work is done, and it should be not less than one-fifth of the light on the work- task, and in no case lower than five foot- candles. 3. Prevent glare from exposed lamps in working areas. All visible lamps should be fitted with pro- perly designed reflectors or diffusing fittings, or otherwise shaded from view. In passages and spaces other than working-areas, which are not of 100 watts or smaller can be used unshaded. 4. Ensure that proper reflectors are used and avoid large glaring lamps in small inadequate reflectors. Reflectors should be used to screen lamps from view down to an angle of at least 20 watts and over, mounted below 20 feet, should be screened’ to an oe of not less than 30 degrees. 5. Prevent the use of large glaring lamps in open reflectors in close proximity to workers. Incandescent lamps, 500 watt or larger, or other high-brightness lamps of equivalent light- output, should not be used in open-type reflec- tors if mounted less than 14 feet above the floor.