Section 31(1) in The West Bengal Factories Rules, 1958
(1)The general illumination over those interior parts of a factory where persons are regularly employed shall be not less than [65] [Substituted by W. B. Factories Amendment Rules, 1991,] lux measured in the horizontal place at a level of [90 centimeters] [Substituted by W. B. Factories Amendment Rules, 1991,] above the floor:Provided that in such parts in which the mounting height of the light source for general illumination necessarily exceeds [7.6] [Substituted by W. B. Factories Amendment Rules, 1991,] meters measured from the floor or where the structure of the room or the position or construction of the fixed machinery or plant prevents the uniform attainment of this standard, the general illumination at the said level shall be not less than [22] [Substituted by W. B. Factories Amendment Rules, 1991,] lux and where work is actually being done the illumination shall be not less than [65] [Substituted by W. B. Factories Amendment Rules, 1991,] lux.
