API RP 9B-2015 pdf free download
API RP 9B-2015 pdf free download.Application, Care, and Use of Wire Rope for Oil Field Service.
2.2 Handling During Installation 2.2.1 Stringing of Blocks Blocks should be strung to give a minimum of wear against the sides of sheave grooves. 2.2.2 Changing Lines and Cutoff It is good practice in changing lines to suspend the traveling block from the crown on a single line. This tends to limit the amount of rubbing on guards or spacers, as well as chances for kinks. This practice is also very effective in pull- through and cut-off procedure. 2.2.3 Rotation of Reel The reel should be set up on a substantial horizontal axis so that it is free to rotate as the rope is pulled off, and in such a position that the rope will not rub against derrick members or other obstructions while being pulled over the crown. A snatch block with a suitable size sheave should be used to hold the rope away from such obstructions. 2.2.4 Jacking The use of a suitable apparatus for jacking the reel off the floor and holding it so that it can turn on its axis is desirable. 2.2.5 Tension on Rope For proper spooling, new ropes shall be installed under tension. This will reduce rope crushing and, if the tension is sufficient, prevent the “pulling-in” of upper layers in multiple layer spooling. 2.2.6 Twist in Rope When installing a new rope, it is important that twist or torque not be in the installed rope. If twist or torque is apparent, the twist should be removed before the rope is anchored. 2.2.7 Kinking Care should be taken to avoid kinking a wire rope since a kink is cause for removal of the wire rope or damaged section. 2.2.8 Striking with Hammer Wire ropes should not be struck with any object such as a steel hammer, derrick hatchet, or crow bar which may cause wire displacement and distortion. Even when a soft metal hammer is used, it should be noted that a rope can be damaged by such blows. Therefore, when it is necessary to crowd wraps together, any such operation should be performed with the greatest of care; and a block of wood should be interposed between the hammer and rope. 2.2.9 Cleaning The use of solvent may be detrimental to a wire rope. If a rope becomes covered with dirt or grit, it should be cleaned with a brush and followed by appropriate lubrication as necessary. 2.2.10 Excess or Dead Wraps After properly securing the wire rope in the drum socket, the number of excess or dead wraps or turns specified by the equipment manufacturer should be maintained. For rigs with motion compensating equipment, enough additional rope shall be spooled on the drum to maintain the minimum number of dead wraps when the rope required by the compensator is at its maximum.
2.3.4 Winding on Drums Rope should be kept tightly and evenly wound on the drums. Sufficient tension must be applied to the dead wraps on the drill line after making a cut or during installation to prevent it being forced from the lagging and crushed or damaged. 2.3.5 Application of Loads Sudden, severe stresses are injurious to wire rope, and such applications should be reduced to a minimum. Application of severe shock or jerking load(s) can have (but are not limited to) the following consequences: reduced working life, loss of strength, permanent wire rope damage, and/or sudden failure due to overload. 2.3.6 Operating Speed Experience has indicated that wear increases with speed; economy results from moderately increasing the load and diminishing the speed.
