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Abrasion Resistant Coatings for Ice Class Vessels Mike Winter
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Abrasion Resistant Coatings for Ice Class Vessels Mike Winter
Mike Winter Technical Manager – Americas Marine and Protective Coatings International Paint, LLC, Houston, TX [email protected] www.international-marine.com
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Case Histories
Typical Coating Specifications
Coatings Performance Requirements
The Challenge of Ice
Background
Abrasion Resistant Coatings for Ice Class Vessels
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Background Although there has been a lot of recent attention
regarding Arctic trading routes opening up and
the effect on the shipping industry, the challenges of
operating ships in ice conditions and the engineering
required to do so safely has been known for a
long time
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The Challenge of Ice 5
The Challenge of Ice
Ice damage to conventional coating
resulting in corrosion
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Coatings Performance Requirements 6
Coatings Performance Requirements
Abrasion Resistance Corrosion Resistance
Impact Resistance
Flexibility
Low Frictional Resistance
Smoothness
Resistance to Ice Adhesion
Class Certification
Performance at -50⁰C Fouling Protection
Shipyard application
High Film Build
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Coating Performance Requirements 7
Various test methods are available to measure impact resistance, abrasion resistance, tensile strength and elongation of coatings
Mechanical Properties
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Coating Performance Requirements 8
Coatings also need to provide corrosion resistance during permanent sea water immersion and compatibility with cathodic protection systems
Corrosion Resistance
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Coating Performance Requirements 9
The primary characteristics of mechanical properties and corrosion resistance are derived from the polymer system.
High build, high solids content two component epoxy/amine systems preferred. Formulated to create a hard, impact and abrasion resistant film, but without becoming too brittle at low temperatures
Excellent adhesion to steel is characteristic of these systems
Coating Chemistry
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Coating Performance Requirements 10
Other requirements
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Coating Performance Requirements 11
Class Recognition
Depending on Class Society
and Ice Classification, use of a
Recognized Abrasion Resistant coating
may enable a reduction in scantling
thickness
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Typical Coating Specifications 12
Factors to consider:
Trading in first year or multi year ice?
Classification society requirements with respect to specific ice class
Ice class coating for ice belt only or full underwater hull?
Use of antifouling system over ice coating?
Likely trading pattern?
Regional Legislation with respect to invasive species requiring antifouling systems
Typical Coating Specifications
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Typical Coating Specifications 13
Antifouling or not?
Vessel without antifouling after
4 weeks stationary at quayside
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Typical Coating Specifications 14
Steel preparation: Remove weld spatter and grind sharp edges and uneven welds
Surface preparation: Abrasive blasted to ISO 8501-1 (2007): Sa 2½ and a surface profile minimum of 60μ . Remove all shop primer.
Coating scheme:
1 x 500μ dft Intershield 163 Inerta 160
Optional antifouling scheme:
1 x 75μ Intergard 263
Antifouling paint as specified
Example Coating Specification
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Typical Coating Specifications 15
Application at Newbuilding
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Case Histories 16
Case Histories – Ice Trial
SCF Yamal –
Russian Arc7 class
Ice breaking LNG carrier
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Case Histories 17
In dock condition after ice trial
Intershield 163 Inerta 160
ice class coating
Antifouling applied over
abrasion resistant coating – fouling
control during newbuild fitting out
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Case Histories 18
https://www.youtube.com/watch?v=HMSelzstcco
Yamal LNG – video clip
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Case Histories 19
MV Monchegorsk
Russian Arc 7 class
Container/Ore carrier –
Murmansk/ Arkhangelsk/
Dudinka
to N.Europe and N.Asia
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Case histories 20
MV Monchegorsk – 7 years in service
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Case Histories 21
Timofey Guzhenko (2 years)
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Case Histories 22
CCGS Henry Larsen
Pierre Radison Class icebreaker
Arctic Class 4
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CCGS Henry Larsen – 2 years service
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CCGS Louis St. Laurent
11,345 GT icebreaker
Arctic Class 4.
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Case Histories 25
STQ Ferry
Approx 3 m ice belt
with ice class coating
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Summary 26
Environmental changes are leading to increasing interest in shipping traversing Arctic waters
Vessels trading through ice require special coatings that can resist ice damage in order to protect the hull from corrosion
Fortunately, for over 30 years specialized coatings have been available with demonstrated excellent performance on ice trading vessels, including ice breakers, operating in Baltic, Canadian Arctic and Russian Arctic conditions.
Summary
