API RP 9B-2015 pdf 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.
2.3.7 Rope Speed High speeds when running blocks under light load may cause damage to the wire rope. “Whipping” of the wire rope may cause contact with sheave guards or other structural members. 2.3.8 Lubrication of Wire Rope Wire ropes are well lubricated when manufactured; however, the lubrication will not last throughout the entire service life of the rope. Periodically, therefore, the rope will need to be field lubricated. When necessary, lubricate the rope with a compatible lubricant which will penetrate and adhere to the rope, and which is free from acid or alkali. 2.3.9 Clamps and Rotary Line Dead-End Tie Down The clamps used to fasten lines for dead-ending shall not kink, flatten, or crush the rope. The rotary line dead-end tie down is equal in importance to any other part of the system. The deadline anchorage system shall be equipped with a drum and clamping device strong enough to withstand the loading, and designed to prevent damage to the wire line that would affect service over the sheaves in the system. Consideration should be given to adding a second clamp at the deadline anchor when a plastic filled drill line is used to further reduce the likelihood of slippage.
2.3.10 Wire Breakage from Martensite in Drilling Lines Care should be taken to maintain proper winding of rotary drilling lines on the drawworks drum in order to avoid excessive friction which may result in the formation of martensite. Martensite may be formed by excessive friction at kick over points on the drum, in worn grooves of sheaves, slippage in sheaves, or friction resulting from rubbing against a derrick member. A line guide should be employed between the drum and the fast line sheave to reduce vibration and keep the drilling line from rubbing against the derrick. On rigs with motion compensations, the high line speeds and sudden direction reversals can cause rope slippage in sheave grooves which can result in martensite formation.