Synthetic fibre ropes for towing, mooring and anchoring
|Publication Date:||1 March 2016|
This CP gives a description of the procedures and requirements related to documentation, design and type testing applicable for TA of synthetic fibre ropes for towing, mooring and anchoring.
This CP does not set the design requirements to the synthetic fibre ropes for towing, mooring and anchoring. TA is based on compliance with design requirements given in the rules and/or other regulations and standards. The CP describes how to document compliance with the requirements in order to obtain a TA certificate for the equipment. This includes, where relevant, technical requirements for how the type tests shall be performed.
The Society's type approval certificate will cover one grade of the actual product with the possibility to include variants.
For synthetic fibre ropes this means:
Grade: ropes made of different fibres (e.g.: polyamide, polyester, polypropylene, polyethylene) are considered different grades. In addition different qualities within each type of material are considered different grades, e.g. different polyethylene qualities (low density, high density, ultra high density, etc.) will be considered different grades. Braided and laid ropes are also considered different grades
variants: Different constructions (e.g.: 3-strand, 4-strand, 6-strand, etc.) and different dimensions (diameters) are considered as variants.
One DNV GL type approval certificate is normally limited to one manufacturer at one production site, however, other arrangements may be agreed upon with the Society.
The following properties/informati
all types of constructions
all dimensions or range of dimensions, e.g. diameter, circumference, etc.
net mass per metre
minimum breaking load
the product standard/specificati
The type approval programme covers only the rope itself, and only the aspects covered in the standards (as listed in Sec.2 ).
Type tests as specified in Sec.2 , are to be carried out and verified in one of the following ways:
at a DNV GL laboratory
at a recognized and independent laboratory or a laboratory accepted by the Society
at the manufacturer's premises in the presence of a surveyor.