ASME B30.16-2017 pdf download

ASME B30.16-2017 pdf download.Overhead Underhung and Stationary Hoists.
liquids, or gases, or combustible dusts or fibers that may be present, and the likelihood that a flammable or combustible concentration or quantity is present (see ANSI/NFPA 70). hoist: a machinery unit that is used for lifting or lowering a freely suspended (unguided) load. hoist, stationary: a base or deck-, ceiling-, or wall- mounted hoist used for vertical lifting and lowering of freely suspended, unguided loads (see Fig. 16-0.1-6). hoist, underhung: trolley hoists or hoists suspended from trolleys traveling on the lower flanges of beams or simi- lar hoists that are hook- or lug-suspended. hoist operator, dedicated: an employee whose job is nor- mally confined solely to the operation of the equipment. lifting devices: devices that are not normally reeved onto the hoist rope or chain, such as hook-on buckets, mag- nets, grabs, and other supplemental devices used for ease of handling certain types of loads. The weight of these devices is to be considered part of the load to be lifted. limit device: a device that limits equipment motion or takes control of particular functions without action of the operator when a limiting condition is reached. load, rated (capacity): the maximum load designated by the manufacturer for which the equipment is designed and built. load, working: the external load applied to the equipment, including the weight of load-attaching equipment, such as shackles and slings. load suspension parts: the load suspension parts of the hoist are the means of suspension (hook or lug), the structure or housing that supports the drum or load sprocket, the drum or load sprocket, the rope or load chain, the sheaves or sprockets, and the load block or hook. lockout/tagout: the placementofa lock/tag on the energy- isolating device in accordance with an established procedure. minimum breaking force: the minimum load at which a new and unused wire rope will break when loaded to destruction in direct tension. normal operating conditions: conditions during which equipment is performing functions within the scope of the original design. operator, nondedicated: an employee who uses the equip- ment as a tool to assist in the performance of his/her regular job. original language(s): language(s) used by the manufac- turer to develop and verify product instructions and manual(s). overload: any load greater than the rated load. 2 overtravel restraint: a device used to prevent the slack load chain from inadvertently being lowered out of the load sprocket. parts (lines): number of lines of rope or chain supporting the load block or hook. pawl: a device that engages a ratchet to prevent rotation. pendant station: controls suspended from the equipment for operating the unit from the floor. power transmission parts: the machinery components includingthe gears, shafts, clutches, couplings, bearings, motors, and brakes. qualified person: a person who, by possession of a recog- nized degree in an applicable field or certificate of pro- fessional standing, or by extensive knowledge, training, and experience, has successfully demonstrated the abil- ity to solve or resolve problems relating to the subject matter and work. ratchet: a toothed memberforengagementwiththe pawl. reeving: a system in which a rope or chain travels around drums, sheaves, or sprockets. rope: refers to wire rope unless otherwise specified. service, heavy: service that involves operation within the rated load limit that exceeds normal service. service, normal: service that involves operation with ran- domly distributed loads within the rated load limit, or uniform loads less than 65% of rated load for not more than 15% of the time for manually operated hoists and 25% of the time for electric- or air-powered hoists. service, severe: service that involves normal or heavy ser- vice with abnormal operating conditions. shall: a word indicating a requirement. sheave: a wheel or pulley used with a rope or chain to change direction and point of application of a pulling force. sheave, equalizer: a sheave used to equalize tension in opposite parts of the rope or chain. Because of its slight movement, it is not termed a running sheave. sheave, running: a sheave that rotates as the load block is lifted or lowered. should: a word indicating a recommendation. side pull: the component of the hoist pull acting horizon- tally when the hoist lines are not operated vertically. sprocket, idler: a freely rotating device that changes the direction of the load chain. sprocket, load: a hoist component that transmits motion to the load chain. This component is sometimes called load wheel, load sheave, pocket wheel, or chain wheel. stripper: a device that aids the load chain in leaving the load sprocket.