Figure 18. Improper coiling & reeling can create open (a) or closed kinks (b). The open kink will open the rope lay; the closed kink will close it.
Starting loop (c): Do not allow the rope to form a loop. If, however, a loop does form and is removed at the stage shown, a kink can be avoided.
Kink (d): In this case, the looped rope was put under tension, the kink was formed, the rope is permanently damaged and must be removed.
Unwinding wire rope from its reel also requires careful and proper procedure. There are three methods to perform this step correctly:
- The reel is mounted on a shaft supported by two jacks or a roller payoff (Fig. 19). Since the reel is free to rotate, the rope is pulled from the reel by a workman holding the rope end, and walking away from the reel as it unwinds. A braking device should be employed so that the rope is kept taut and the reel is restrained from over-running the rope. This is necessary particularly with powered de-reeling equipment.
- Another coiling & reeling method involves mounting the reel on an unreeling stand (Fig. 20). It is then unwound in the same manner as described above. In this case, however, greater care must be exercised to keep the rope under tension sufficient to prevent the accumulation of slack – a condition that will cause the rope to drop below the lower reel head.
- In another accepted method, the end of the rope is held while the reel itself is rolled along the ground. With this procedure, the rope will pay off properly however, the end being held will travel in the direction the reel is being rolled. As the difference between the diameter of the reel head and the diameter of the wound rope increases, the speed of travel will increase.