ASME B30.19:2016 pdf download

ASME B30.19:2016 pdf download.Cableways
Within the general scope defined in Section I of the Introduction, thescope ofB30.19 appliesto allloadtrans- porting, hoisting, and lowering cable-supported sys- tems operating on and supported from track cable(s). This Standard does notapply to skyline systems, as used in the logging industry, or slackline systems used for excavating.
fixedcableway: a cablewayconsistingoffixed (nonluffing) towers (masts) that support the track cable(s). The lower and upper load blocks are supported by a carriage pow- ered by inhaul and outhaul ropes to travel on the track cable(s). The functionis to lift, lower, and transportloads a distance between the towers (see Fig. 19-0.2.1-1). luffing cableway: a cableway similar to a fixed cableway except the towers (masts) are not fixed. By the use of powered luffing guys, the towers (masts) can be leaned in either direction transverse to the track cable(s) span, providing a lateral movement of the load block (see Fig. 19-0.2.1-2). parallel cableway: a cableway similar to a fixed cableway except the towers are supported by wheels that are pow- ered for lateral movement on parallel tracks (see Fig. 19-0.2.1-3). radial cableway: a cableway that has a fixed (nonluffing) tower and a tower supported by wheels powered for travel on a track that follows an arc at a radius about the fixed tower (see Fig. 19-0.2.1-4).
accessory: a secondary part or assembly of parts that contributes to the overall function and usefulness of the machine. administrative or regulatory authority: governmental agency, or the employer in the absence of governmental jurisdiction.brake: a device, other than a motor, used for retarding or stopping motion by means of friction or power. button line: a rope suspended between the top of the cableway towers to position the slack carriers at prede- termined locations as the trolley moves longitudinally along the track cable. The button line is normally above and clear of the track cables. The buttons attached to the button line are of varying sizes to permit some of the slack carriers to pass by while stopping the carrier designated for that location. cab: a housing provided for the operator in which the cableway controls are contained. cableway: a device used for hoisting, lowering, and trans- porting loads within a prescribed path, longitudinally and laterally. The load block (upper) travels on a rope catenary system having span ends that are supported on fixed or movable towers (masts) or other elevated supports. carriage (trolley): a framework that travels by its sheaves (wheels) on the track cable(s). It is pulled along the track cable by the inhaul-outhaul rope and includes the upper load block (see Fig. 19-0.2.1-1). designer (original): the qualified person or persons desig- nated to design the components of a cableway for a given set of circumstances relating to, but not limited to, capacity, span, height, and terrain (also, see manufacturer). designer (other than original): the qualified person or per- sons designated to modify the design or arrangement of an existing cableway to a new set of circumstances. design factor, rope: the ratio of minimum breaking force to working load. drift: the act of pulling or pushing the lower load block or load horizontally by means of an external force. drum: the cylindrical member around which a rope is wound and through which power is transmitted to the ropes.head tower (mast): a vertical support structure, guyed or counterweighted for stability, whose purpose is to support the track cable and operating ropes. The head tower is the tower located closest to the load hoist and inhaul-outhaul hoist. inhaul-outhaul (rope): the rope system that pulls the trol- ley and load toward the head tower (inhaul), or pulls the trolley and load away from the head tower (outhaul). inhaul-outhaul hoist (trolley hoist): a hoist having two drums, one of which winds on rope while the other drum simultaneously unwinds rope; or a single drum hoist from which the rope winds on one end while the rope unwinds from the other drum end (see Figs. 19-0.2.2-1, 19-0.2.2-2, and 19-0.2.2-3). The hoist is powered by a prime mover.