Natural fibre rope

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11. Natural fibre rope
11.1. Fibre quality
11.1.1. Natural fibre rope for use on a lifting appliance or for
slings should be of good grade manila (abaca) or other fibre of equal
quality.
11.2. Compliance with other requirements
11.2.1. The rope should comply with the requirements of
section 10.1 and paragraphs 10.2.1 and 10.5.2.
11.3. Thimble or loop splice
11.3.1. A thimble or loop splice in a rope should have not less
than three full tucks, each tuck with all the yarns in the strand.
11.4. Care
11.4.1. When a rope is not in use, it should be stored in a
suitable place, hung upon wooden pegs or galvanised hooks in a
ventilated position away from any source of heat.
11.4.2. A rope that has become wet should be dried naturally.
11.4.3. A rope that has been or is suspected of having been in
contact with any acid, alkali or any other substance known to be
detrimental to fibre rope should be taken out of service and destroyed
unless in the case of a long rope the area of contamination is
definitely known, in which case that area may be cut out and the
rope spliced.
11.4.4. In some cases, it is advantageous to use only ropes that
have been suitably treated with a rot-proofing agent and/or a water
repellant.
11.4.5. A rope intended to be used for a boatswain's chair
should be suitably tested before a person is hoisted in the chair.'
1One test is to use successive parts of the rope for a tug of war, with three men
either side, the tension being applied progressively, i.e. first one man at each end
of the rope, then two and finally three.
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