Exception: | If the employer can demonstrate that the system's function would be seriously hindered by the required time delay, warning signs may be provided in place of the audible warning device. If the system was installed before November 20, 1995, warning signs may be provided in place of the audible warning device until such time as the conveyor or its control system is rebuilt or rewired. These warning signs must be clear, concise, and legible and must indicate that conveyors and allied equipment may be started at any time, that danger exists, and that personnel must keep clear. These warning signs must be provided along the conveyor at areas not guarded by position or location. |
(11) Remotely and automatically controlled conveyors, and conveyors that have operating stations which are not manned or which are beyond voice and visual contact from drive areas, loading areas, transfer points, and other locations on the conveyor path not guarded by location, position, or guards must be furnished with emergency stop buttons, pull cords, limit switches, or similar emergency stop devices. However, if the employer can demonstrate that the design, function, and operation of the conveyor do not expose an employee to hazards, an emergency stop device is not required.
(a) Emergency stop devices must be easily identifiable in the immediate vicinity of such locations.
(b) An emergency stop device must act directly on the control of the conveyor involved and must not depend on the stopping of any other equipment.
(c) Emergency stop devices must be installed so that they cannot be overridden from other locations.
(12) Where coal-handling operations may produce a combustible atmosphere from fuel sources or from flammable gases or dust, sources of ignition must be eliminated or safely controlled to prevent ignition of the combustible atmosphere.
Note: | Locations that are hazardous because of the presence of combustible dust are classified as Class II hazardous locations. See chapter 296-24 WAC, Part L. |
(13) An employee cannot work on or beneath overhanging coal in coal bunkers, coal silos, or coal storage areas, unless the employee is protected from all hazards posed by shifting coal.
(14) An employee entering a bunker or silo to dislodge the contents must wear a body harness with lifeline attached. The lifeline must be secured to a fixed support outside the bunker and must be attended at all times by an employee located outside the bunker or facility.
[Statutory Authority: RCW
49.17.010,
49.17.040,
49.17.050,
49.17.060 and chapter
49.17 RCW. WSR 19-13-083, § 296-45-48555, filed 6/18/19, effective 8/1/19. Statutory Authority: RCW
49.17.010, [49.17].040, [49.17].050 and [49.17].060. WSR 98-07-009, § 296-45-48555, filed 3/6/98, effective 5/6/98.]