cosalt/bexco offshore mooring systems single point moorings mark brooks ieng miie business...
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Cosalt/Bexco Offshore Mooring Systems
Single Point Moorings
Mark Brooks IEng MIIEBusiness Development Manager
for operational performance, reliability, safety & on-time delivery
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
The major business activities of
Cosalt: safety & protection
Rope – Fibre, Wire & Combination
Rigging & Lifting
Marine Safety Equipment
Life Saving Appliance Servicing
Fire Fighting & Inspection
“the complete marine service provider”
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Cosalt: safety & protection
Cosalt plc turnover ~ £Stg 151 million
Cosalt: Safety & Protection ~ £Stg 35 million
18 UK Businesses in port based locations
The markets of Cosalt: safety & protection
Onshore17%
Retail & Cash Sale5%
Offshore, Ocean & Coastal31%
Industrial & Waterside
23%
Harbour & Rivers24%
Major Rope Constructions
3-Strand 6-Strand
Circular Braided - Ultraline 8-Strand
12-Strand
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Double Braided (2-in-1)
Fibres & Ranking
Polypropylene
Polyester / Nylon
Aramid
UHMPE
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Rope Properties – Wear & TearFiber type Cut
resistanceabrasion resistance
dry wetDyneemapolyester
nylonPP
aramid
++++++++
+++
++++
+++++
++++++o-
Testing rope wear is
always machine
dependent
Tests can be used to rank
materials & rope
constructions
Static load
rope on metal
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Yarn on Yarn or Rope on ropelong lengths chafing against each other:- type of wear (abrasive, melting)- environment (dry, wet)
Yarn on metal or Rope on metallong lengths chafing over an object:- type of wear (abrasive, melting)- environment (dry, wet)- protection
rope on rope
rope on metal
Rope Testing - Abrasion
Marine Finish is used to improve the Safe Working Life in marine environment
Test conform ASTM D6611-00
Yarn-on-Yarn Abrasion
10
100
1000
10000
100000
0% 2% 4% 6%
Applied Tension (N/tex)
cycl
es to
fai
lure
Marine Finish
standard
Marine Finish
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Advantages of 8-strand rope:+ efficient construction+ torque-free+ easy to handle+ easy to splice
Points of attention:- yarns can be pulled- in winching: only on a split
drum
8-Strand Multiplait Rope Construction
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Advantages :better abrasion resistance; smooth surface (strands/yarns will not get caught easily) rope is round : visual aspect easy to use on the winch (no burying because of round
construction) non-rotating endless ropes possible very easy to splice ideal for lifting with free end (non rotating + round)
12-Strand Multiplait Rope Construction
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Ultraline Construction
Rope Construction
Typical penetration of UV
into rope is 1-2 mm
cores
cover
- Cover not only protects against abrasion, but also UV- Small repairs are possible if inner strength has not been ccompromised – strength will not be affected.
- All rope strength is contained within central cores.
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Double Braided Construction
Rope Construction
- Strength is shared 50/50 between braided core and braided cover / sheath- Most common type of rope used for SPM mooring hawsers
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
OCIMF GUIDELINES
Type approval of nylon SPM Hawsers is conducted under the OCIMF 2000 Guidelines, 1st Edition
Major Difference between OCIMF 1987 and OCIMF 2000
Number of tests required
Should be repeated every 5 years
Larger than 20” ropes are to now be tested
Quantification of the behaviour of the marine finish
TCLL values (8 strand): polypropylene 52% polyamide (standard) 55% steel (laid) 60%
polyester 70% Ultraline® Nylon 75% Double Braid Nylon
69.1% Deltaflex 80%
Dyneema > 100%
Oil Companies Int. Marine Forum standard fatigue test
Thousand Cycle Load Level
40
50
60
70
80
90
0 1000 2000 3000 4000 5000 6000
cycles
% M
BL
TCLL is an accelerated fatigue test to obtain a quick comparison between ropes and materials
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
tension-tension fatigue life
0%
20%
40%
60%
80%
100%
1 10 100 1000 10000 100000 100000 1E+07
cycles to failure
Peak load (% MBL)
BL3
Other
TR
TCLL values
The effect of different TCLL values is translated back to load levels representative for practical loading conditions (here these are assumed to be less than 40% of the MBL).
Following the OCIMF the cyclic fatigue curve is represented as the peak load versus the logarithmic of the cycles to failure.
As recommended the cyclic curve is represented by a linear line, going through 1 cycle @100% and the TCLL load value obtained for a 1 000 cycles.
When translating the differences in TCLL to load levels encountered in practical situations, their importance becomes clear.
Based on the result for the OCIMF TCLL test a Cosalt/Bexco ULTRALINE BL3 will last some 10 000 000 cycles when cycling to 40% of its MBL. A.N. OTHER with a TCLL of 68% will last some 380 000 cycles for examples, and ropes with a lower TCLL even less cycles
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Typical SPM Assembly
- Buoy / FPSO Chafe Chain
- Heavy Duty Shackles
- Rope Thimbles
- Mooring Hawser
- FPSO / Shuttle Tanker Chafe Chain
- Support Buoy / Pick-up Buoy
- Pick-up Ropes / Messenger Lines
- Load Monitoring Systems
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Buoy / FPSO & FPSO / Shuttle Tanker Chafe Chains
- Vetted & approved suppliers only - ISO 9001/9002
- Close working partnership
- Majority is European Manufacture / Far Eastern can be supplied if requested
- Production Range 16mm - 120mm Diameter in various grades
- Laboratory & testing facilities
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Heavy Duty Shackles & Thimbles
- Vetted & approved suppliers only - ISO 9001/9002
- Close working partnership
- European Manufacture
- Laboratory & testing facilities
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Heavy Duty Shackles
- Forged alloy steel
- Finish painted / Galvanised
- Double nuts & S/S cotter pins
- MBL is 5 x SWL
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
SPM Cast Thimble
- High strength cast corrosion
resistant steel (Galvanised)
- Stainless steel
- Shackle retaining bar
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Tubular Thimble
- Fabricated construction
- Mild steel
- Finish galvanised / plastic coated
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Bellmouth Thimble
- Reusable
- Mild steel (galvanised)
- Stainless steel
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Mooring Hawsers
- Manufactured by BEXCOropes
- All hawsers supplied manufactured & supplied to OCIMF 2000
- Over 8 years experience, SPM hawsers
- Reference history
Selection of mooring hawser
- Repeat loading
- OCIMF TCLL value
- Abrasion resistance
- Energy absorption
Constructions available
- BL3 Ultraline Nylon
- DB12 Double Braid Nylon
- DF8 Deltaflex Composite
Enhancements
- PU coating
- Additional protection sleeves
- Tubular rope floats
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Support Buoy / Pick-up Buoy
- Vetted & approved supplier only
- Close working partnership
- UK Manufacture
Cylindrical Chain Support Buoy
- Central steelwork
- Galvanised swivel ends
- Resiliant closed cell foam
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Support Buoy / Pick-up Buoy
- Vetted & approved supplier only
- Close working partnership
- UK Manufacture
Cylindrical Through Chain Support Buoy
- Through steel tube
- Chain lock plate one end
- Resiliant closed cell foam
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Support Buoy / Pick-up Buoy
- Vetted & approved supplier only
- Close working partnership
- UK Manufacture
Pick-up Buoy
- Fixed eye each end
- Central steelwork
- Resilient closed cell foam
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Pick-up Ropes / Messenger Lines
- Nutech brand
- High strength co-polymer yarn
- High visibility yellow colour*
- Permanent flotation - SG 0.91
- Non-rotating, torque-free rope
- Fully UV stabilised
- Excellent abrasion resistance
- Flexible, easy to handle & splice* other colours available on request
Available in 8 or 12 strand construction
Also available SPUNSTAPLE POLYPROPYLENE
Components
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Load Monitoring Systems
- Vetted & approved suppliers only - ISO 9001/9002
- Close working partnership
- European Manufacture
- Laboratory & testing facilities
Benefits of Load Monitoring
- Safe operation
- Hawser life prediction
- Optimise hawser service life
- ‘Bells & whistles’!!
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Mooring Hawser Supply
31
76
25
6757
68 63
90
141
113
0
20
40
60
80
100
120
140
160
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
Manufacturing hawsers since 1997
Active Areas / Representation
Operation & Maintenance Guidelines
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
“To achieve optimum life operators need to develop inspection, handling and
maintenance procedures based on local conditions”
We are here to help you with this
IF THERE IS ANY DOUBT ABOUT THE CONDITION
OF A ROPE IT SHOULD BE REJECTED
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Supporting Documentation
FactFile [Bulletin No.14]
Offshore Mooring Systems
Offshore Mooring Systems
“Total System Management”
also on CD-Rom
Offshore Mooring Systems
www.cosalt.co.uk /
www.bexco.be
Cosalt International LimitedFish Dock Road Grimsby N.E. Lincolshire DN31 3NW
United Kingdom
Telephone 44 (0) 1472 504258 Facsimile 44 (0) 1472 504257e-mail: rope@cosalt.co.uk
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety & on-time delivery
Any questions?
Photographs courtesy of Bluewater Engineering BV & Geolitel Corporation
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