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DNVGL-RP-E304

Damage assessment of fibre ropes for offshore mooring

active, Most Current
Organization: DNVGL
Publication Date: 1 September 2019
Status: active
Page Count: 24
scope:

Introduction

The purpose of this recommended practice is to provide assessment basis for the suitability of a polyester mooring rope to remain in service, after it has been mechanically damaged by external objects.

The recommended practice is applicable to any parallel-subrope type of rope. The inputs required to perform the necessary calculations are provided by the rope manufacturer. This information is given in the manufacturer's report.

The damage assessment is based on the subrope-to-rope relationship, since the subrope is the primary building block of the rope. Subrope-to-rope assessment is required since the effect of damage is highly dependent on the damage distribution.

This implies that for a given loss of area, the resulting rope strength and fatigue performance will vary depending on the distribution of the damage.

The result of the damage assessment is a revised minimum breaking strength MBS, denoted MBSDAMAGED.

This (revised) MBSDAMAGED is used to determine if a damaged rope is suitable for temporary or prolonged service, and use of this recommended practice shall provide documentation for that decision.

Prolonged service may be possible if the fatigue performance of the damaged rope is deemed satisfactory.

Document History

DNVGL-RP-E304
September 1, 2019
Damage assessment of fibre ropes for offshore mooring
Introduction The purpose of this recommended practice is to provide assessment basis for the suitability of a polyester mooring rope to remain in service, after it has been mechanically damaged by...
July 1, 2017
DAMAGE ASSESSMENT OF FIBRE ROPES FOR OFFSHORE MOORING
A description is not available for this item.
July 1, 2017
Damage assessment of fibre ropes for offshore mooring
The purpose of this recommended practice is to provide assessment basis for the suitability of a polyester mooring rope to remain in service, after it has been mechanically damaged by external...
April 1, 2005
DAMAGE ASSESSMENT OF FIBRE ROPES FOR OFFSHORE MOORING
Application of the recommended practice The purpose of this recommended practice is to provide assessment basis for the suitability of a polyester mooring rope to remain in service, after it has...

References

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