![]() When the required clearance is not available on at least one side of the crane's trucks, the area shall not be used and shall be marked and identified. If the track area is used for employee passage or for work, a minimum clearance of three feet (0.9 m) shall be provided between trucks or the structures of rail-mounted cranes and any other structure or obstruction. When employees may be in the vicinity of the tracks, crane trucks shall be equipped with personnel-deflecting guards. (ii) When more than one crane operates on the same runway or more than one trolley on the same bridge, each crane or trolley shall be equipped with bumpers or equivalent devices at adjacent ends subject to impact. If a stop engages the tread of the wheel, it shall be of a height not less than the radius of the wheel. (i) The ends of all tracks shall be equipped with stops or bumpers. (5) The employer shall monitor local weather conditions by subscribing to a weather service or using equally effective means. (A) Any portion of the crane spanning or partially spanning a vessel shall be moved clear of the vessel if safe to do so and (B) The crane shall be secured against travel, using all available means of securing. (ii) When the wind reaches the crane's shutdown speed: (B) The crane shall be readied for shutdown. (i) When the wind reaches the crane's warning speed: ![]() The instructions shall include procedures for responding to high wind alerts and for any coordination necessary with other cranes. Operators shall be directed to comply with these instructions. The employer shall post operating instructions for high wind conditions in the operator's cab of each crane. (A) When wind velocity reaches the warning speed, not exceeding the crane manufacturer's recommendations and (B) When wind velocity reaches the shutdown speed, not exceeding the crane manufacturer's recommendations, at which work is to be stopped and the crane secured. ![]() That warning shall be transmitted whenever the following circumstances are present: (ii) The wind indicating device shall provide a visible or audible warning to alert the operator of high wind conditions. (i) After October 3, 1983, each rail-mounted bridge and portal crane located outside of an enclosed structure shall be fitted with an operable wind-indicating device. Marking shall be legible from the ground level. If there is more than one hoisting unit, each hoist shall have its rated load marked on it or on its load block. The rated loads of bridge cranes shall be plainly marked on each side of the crane and in the cab. (1) For the purpose of this section, rail-mounted cranes include bridge cranes and portal cranes. (g) Rail-mounted cranes (excluding locomotive types). If the inspector can immediately find the exit, no exit sign would be required. If the inspector gets "lost" you need exit signs. The important words are immediately visible. The same floor space, made up of individually separate rooms, in a maze configuration, with no windows, illuminated exit signs may be required to allow employees a safe. ![]() The interpretation of is vital If you have a square room with windows and no partitions, an exit sign would not be needed. The requirement for exit signs is not the number of employees in an establishment, but the physical layout of the building. This is also what is used for scaffold requirements as incorporated into the construction standards, 1910.28(a)(18). The two documents could be used as guidelines for construction cranes. The dock workers start getting concerned at 20-25 mph because in the Bay Area there are a lot of gusts, it is not steady winds. In our discussions during Cal/OSHA advisory meetings, the cranes on the docks usually follow the procedure set in the table 2-A ( Attachment 2 ). Note this standard is for rail mounted cranes. There is a standard in the new "Marine Terminal" standard paragraph 1917.45(g)(3) - ( Attachment 1 ). ![]() There is not a construction standard for the use of cranes during high wind conditions. ![]()
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