Section 69(9)(a) in Rajasthan Factories Rules, 1951
(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 time 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:(iii)all internal structural iron or steel work shall 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 every four months.