1910.252 - General requirements. - Occupational Safety and … Suitable fire extinguishing equipment shall be maintained in a state of readiness for instant use. Such equipment may consist of pails of water, buckets of sand, hose or portable extinguishers depending upon the nature and quantity of the combustible material exposed. 1910.252(a)(2)(iii) Fire watch. 1910.252(a)(2)(iii)(A) Fire watchers shall be required whenever welding or cutting …