Section 66(9)(a) in The Orissa Factories Rules, 1950
(a)In every canteen-(i)all inside walls of rooms and all ceilings and passages and staircases shall be lime-washed or colour washed at least once in each year or painted once in three years, dating from the period when last lime-washed or painted, as the case may be;(ii)all wood work shall be varnished or painted once in three years, dating from the period when last varnished or painted ; and(iii)all internal structural iron or steel work be varnished or painted once in three years, dating from the period when last varnished or painted ; provided that inside walls of the kitchen shall be lime washed once in every four months.