Cosalt/Bexco Offshore Mooring Systems

1
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Single Point Moorings Mark Brooks IEng
MIIE Business Development Manager
2
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
3
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
4
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Major Rope Constructions
Circular Braided - Ultraline
Double Braided (2-in-1)
12-Strand
5
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Fibres Ranking
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Rope Properties Wear Tear

• Testing rope wear is always machine dependent

• Tests can be used to rank materials rope
  constructions

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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Rope Testing - Abrasion
Yarn on Yarn or Rope on rope long lengths
chafing against each other - type of wear
(abrasive, melting) - environment (dry,
wet) Yarn on metal or Rope on metal long
lengths chafing over an object - type of wear
(abrasive, melting) - environment (dry,
wet) - protection
rope on rope
rope on metal
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Marine Finish
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
8-Strand Multiplait Rope Construction

• 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

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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
12-Strand Multiplait Rope Construction

• 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)

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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Ultraline Construction
Rope Construction

• 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.

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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

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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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Oil Companies Int. Marine Forum standard fatigue
test

• 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 gt 100

TCLL is an accelerated fatigue test to obtain a
quick comparison between ropes and materials
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
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 _at_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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
Heavy Duty Shackles Thimbles
- Vetted approved suppliers only - ISO
9001/9002 - Close working partnership - European
Manufacture - Laboratory testing facilities
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
Heavy Duty Shackles
- Forged alloy steel - Finish painted /
Galvanised - Double nuts S/S cotter pins - MBL
is 5 x SWL
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
SPM Cast Thimble
- High strength cast corrosion resistant steel
(Galvanised) - Stainless steel - Shackle
retaining bar
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
Tubular Thimble
- Fabricated construction - Mild steel - Finish
galvanised / plastic coated
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
Bellmouth Thimble
- Reusable - Mild steel (galvanised) - Stainless
steel
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
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
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Components
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!!
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Mooring Hawser Supply
Manufacturing hawsers since 1997
Active Areas / Representation
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Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Operation Maintenance Guidelines
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
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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
Offshore Mooring Systems www.cosalt.co.uk
/ www.bexco.be
also on CD-Rom
32
Cosalt/Bexco Offshore Mooring Systems
for operational performance, reliability, safety
on-time delivery
Any questions?
Cosalt International Limited Fish Dock Road
Grimsby N.E. Lincolshire DN31 3NW United
Kingdom Telephone [phone] Facsimile
44 (0) 1472 504257 e-mail rope_at_cosalt.co.uk
Photographs courtesy of Bluewater Engineering BV
Geolitel Corporation