129.520—Hazardous areas.
        
        (a) 
         No OSV that carries flammable or combustible liquid with a flashpoint of below 140 °F (60 °C), or carries hazardous cargoes on deck or in integral tanks, or is involved in servicing wells, may have electrical equipment installed in pump rooms, in hose-storage spaces, or within 3 meters (10 feet) of a source of vapor on a weather deck unless the equipment is explosion-proof or intrinsically safe under  § 111.105-9 or 111.105-11 of this chapter.
    
    
        
        (b) 
         No electrical equipment may be installed in any locker used to store paint, oil, turpentine, or other flammable liquid unless the equipment is explosion-proof or intrinsically safe under  § 111.105-9 or  § 111.105-11 of this chapter.
    
    
        
        (c) 
         Equipment that is explosion-proof and intrinsically safe must comply with  subpart  of this chapter.