What can be done to inspect the interior of a fiber rope for dirt and grit?

Pulling the strands open slightly is an effective method for inspecting the interior of a fiber rope for dirt and grit. This technique allows the inspector to visually and physically access the internal fibers of the rope. By doing so, any accumulation of dirt, grit, or other contaminants that may have penetrated the outer layers can be more easily identified. A clean interior is crucial to maintaining the rope's integrity and performance since foreign materials can cause abrasion and weaken the fibers.

The other methods listed may not provide as accurate or thorough an inspection. For example, checking the color might indicate wear on the outside but won’t reveal internal contamination. Soaking the rope in water may remove some surface dirt but risks causing additional problems, such as weakening the rope or promoting mold growth if not dried properly. Finally, looking for fraying ends could indicate damage but does not address what might be inside the rope. Thus, pulling the strands open offers the most direct and effective means of inspecting the interior for potential issues.