)
Newsletter # 2 : THE IMPORTANCE OF TCLL
|
In this newsletter we would like to highlight the importance of the TCLL (Thousand Cycle Load Level), a neutral tool for ship managers / ship owners for selecting the most economical mooring ropes for your vessels. |
|
It becomes increasingly more difficult to understand the difference in quality of mooring ropes, due to new products coming into the market continuously. |
|
Different products highlight different characteristics. A benchmark which is increasingly being used in the maritime industry is the TCLL value. TCLL expresses the maximum % of the nominal breaking strength at which a rope can be cycle loaded one thousand times, tested under strict conditions. Simply said, the TCLL value expresses the rope’s resistance against tension-tension fatigue. The higher the TCLL value, the greater the resistance against high cycle loads is. |
 |
|
The TCLL value originates from the OCIMF guidelines for SPM mooring hawsers. The Oil Companies International Marine Forum is voluntary association of oil companies having an interest in the shipment and terminalling of crude oil and oil products in general. This guideline is an attempt to achieve an uniform approach to the safe mooring of tankers. The European rope standards (like any other national standard) are very basic and do not guarantee any quality. Although the principles for the OCIMF guidelines are primarily developed for VLCC, the basic data can be extrapolated and applied to the mooring of smaller tankers and all seagoing vessels.
|
|
Earlier we determined, under supervision by Lloyd’s Register of Shipping, the TCLL value of our main category ropes:
|
|
These values illustrate that it will be expected that the lifetime of the ropes made by Lankhorst Ropes exceeds the lifetime of the polypropylene (TCLL of 52 %) and polyamide based mooring ropes. We hope this information will be helpful for you in order to achieve an economic purchase policy for your need of mooring ropes and to reduce your cost of ownership.
For more information, please contact the Maritime Division of Lankhorst Ropes.
|
P.O. Box 203
8600 AE Sneek
The Netherlands
T: 0031 515 487 654
T: 0031 515 487 550
E: info@lankhorstropes.com