In reply to:
Because
the sheath didn't "fray" but "powdered" it seems there's a severe problem with the structural integrity of the actual sheath fibers. Upon analyzing the rope, it appeared to be
only in the area of the 6-meter marked sections, which were noticeably softer than the rest of the rope. Rubbing the sheath in these areas with a fingernail caused additional "powdering."
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The shot shows worn sections,
about three meters off both ends, -------------------------------------------------------
A friend of mine who also works at the store had a Nomad and sent it back to Petzl after
the sheath crisped up and disintegrated within the first week of use. Petzl sent my friend a new rope and the same thing happened. Unreasonable wear from light falls or tying knots and loading them. Shealth damage like nothing we have ever seen on any ropes.