WAC 296-96-23126. Guarding of equipment

(1) Where feasible, gears, sprockets, sheaves, cables, tapes, belts and chains shall be fitted with suitable guards to prevent accidental contact. (2) Openings in machine room floors above the hoistway must be guarded to prevent tools and materials from falling into the hoistway below. (3) Open grating in machine room floors shall reject a ball 12.7 mm (0.5 in.) in diameter. (4) Ventilation grids where exposed to the hoistway below shall be firmly fastened to prevent accidental removal and shall be fitted with 12.7 mm (0.5 in.) wire mesh securely attached to the grid.