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V SHIPSSeptember 26th, 2012
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The requirement very much depends on the type of vessel and
more so the liquids being carried.
Crude Oil Carrier Crude
Products Carrier CPP
Chemical/Oil Carrier CPP & Chemicals & VegoilChemical Carrier Chemicals & Vegoil
Bunker vessel (heavy) fuels
Owners requirement for Chemical Resistance
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The requirement very much depends on the type of vessel and
more so the liquids being carried.
Crude Oil Carrier Crude
Products Carrier CPP
Chemical/Oil Carrier CPP & Chemicals &VegoilChemical Carrier Chemicals & Vegoil
Bunker vessel (heavy) fuels
Owners requirement for Chemical Resistance
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The requirement very much depends on the type of vessel and
more so the liquids being carried.
Crude epoxy
CPP pure epoxy
Vegoil Free Fatty Acids (FFA%) phenolic epoxyChemicals wide chemical resistance phenolic epoxy
zinc silicate
Owners requirement for Chemical Resistance
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The requirement very much depends on the type of vessel and
more so the liquids being carried.
Tankguard CPC epoxy
Tankguard HB pure epoxy
Tankguard Special standard phenolic epoxyTankguard Special Ultra high-end phenolic epoxyTankguard Zinc zinc silicate
Owners requirement for Chemical Resistance
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Tankguard Zinc
The renew zinc silicate tank coating
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Single hull vs Double Hull Cargo temperature
BUT BEFORE THAT..
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Single hull vs Double Hull Cargo temperature
Cleaning How, and where to get the info
- how to clean who are the experts- hot cleaning water vs cold wall effct
- organic coating vs inorganic coating
- absorption vs desorption
BUT BEFORE THAT..
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Single hull vs Double Hull Cargo temperature
Cleaning How, and where to get the info
Paint challenges Blisters; detachments; pit corrosion
- too limited time for cleaning / ventilation
- tank top of COT: Sulphur Reducing Bacteria
- ageing of coating deckhead
- pit corrosion on tank top
- fast deterioration of zinc silicate
BUT BEFORE THAT..
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Single hull vs Double Hull Cargo temperature
Cleaning How, and where to get the info
Paint challenges Blisters; detachments; pit corrosion
Training Riga (done in the past November 2010)
- under discussion with Neil Barnes to organise cargo tankcoating training for Riga office in the near future
BUT BEFORE THAT..
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Single hull vs Double Hull Cargo temperature
Cleaning How, and where to get the info
Paint challenges Blisters; detachments; pit corrosion
Training Riga
Approach of owners Mondreas; Sonangol; Tri Star; Perosea
BUT BEFORE THAT..
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Tankguard Zinc
The renew zinc silicate tank coating
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Introduction of an upgraded zinc silicate tank coating
Substantially improved resistance to mud cracking
Mud-crack Resistance over 200 microns
Negligible spray dust
Relatively Smooth surface
Easier to cleaning in between cargoes
Easy inspection ofpossiblespray-dustafterapplication
Upgraded zinc silicate tank coating
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Tankguard Special Ultra
The new top-of the range epoxy phenolic tank coating
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Tankguard Special Ultra
%FFA resistance 100%
Methanol resistance YES
Swelling in aggressivechemicals Negligible
General chemical resistance Excellent
Min. application/curetemperature
5C
Post cure 3 days at 60C or 2 days at70C or 1 day at 80C
Product characteristics
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Customers concerns on tank coatings
Owners/Managers/Charterers
CARGO
Flexibility in use
Chemical Resistance
CLEANING
Easy to clean
Ventilation
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Chemical Resistance
Looking at the chemical resistance of the typical cargoes shipped
in Tankguard Special Ultra coated tanks:- Palm Oil no limitations- Vegoils in general no limitations- Oleochemicals no limitations
- CPP no limitations- Chemicals closer look required, but widest chemicalresistance for a phenolic epoxyor alike in themarket
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Chemical Resistance
Looking at the chemical resistance of the typical cargoes shipped
in Tankguard Special Ultra coated tanks:- Palm Oil no limitations- Vegoils no limitations- Oleochemicals no limitations
- CPP no limitations- Chemicals closer look required, but widest chemicalresistance for a phenolic epoxyor alike in themarket
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Vegoil (derivates)
This typical reaction between an alcohol & an acid is called anester.
H2C O R|
HC O R|
H2C O R
With R being C CxH
y||
O
Chemical Resistance - vegoils
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Vegoil (derivates)
Vegetable (and animal) oils are a chemical reaction between fattyacids & glycerine (glycerine is also called glycerol, being an alcohol).
H2C O R|
HC O R + H2O | water
H2C O RFatty acid glycerol ester
Chemical Resistance - vegoils
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Vegoil (derivates)
Vegetable (and animal) oils are a chemical reaction between fattyacids & glycerine (glycerine is also called glycerol, being an alcohol).
H2C O R H2C O H| |
HC O R + H2O HC O R + HO-R| water | free fatty acid
H2C O R H2C O R
The amount offatty acids being freed is expressed in a percentage:% FFA free fatty acid
Chemical Resistance - vegoils
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Vegoil (derivates)
Vegetable (and animal) oils are a chemical reaction between fattyacids & glycerine (glycerine is also called glycerol, being an alcohol).
Zinc silicate can handle 1 ~ 2 % Tankguard Zinc
Pure Epoxy can handle 10 ~ 15 % Tankguard HB
Phenolic Epoxy 10 ~ 50 % Tankguard Special
High-end Phenolic 100 % Tankguard Special Ultra
Chemical Resistance - vegoils
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Bio-fuels
- Bio fuel addition of ethanol to petrol- Bio diesel addition ofFAME to diesel
Chemical Resistance bio-fuels
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Bio-fuels
- Bio fuel addition of ethanol to petrol
Resistance to ethanol(may) require(s) aphenolic epoxyesp. forlong term performance of the coating system.
Chemical Resistance bio-fuels
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Bio-fuels
- Bio diesel addition ofFAME to diesel
The addition ofFAMEto diesel. This is basically not a challenge,provided that the FFA-% is not too high (but this is probably not allowedwithin the specifications).
Fatty Acid Methyl Ester
Chemical Resistance bio-fuels
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Biodiesel
The addition ofFAMEto diesel. This is basically not a challenge,provided that the FFA-% is not too high (but this is probably not allowed withinthe specifications).
H2C O R H2C O H| |HC O R + 3 HOCH3 HC O H + 3 H3CO-R
| Methanol | fatty acid methyl esterH
2
C O R H2
C O H
This process is called transesterfication and is predominantlydone to lower the viscosity.
Chemical Resistance bio-fuels
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Chemical Resistance
Often the main deciding factor when selecting a tank coating.
Extensive exposure testing has been performed- comparison with bench mark product- wide range of curing conditions including varying post-curing- a long list of chemicals tested- cyclic testing
Adhesion, blisters,discolouration, etc have been
evaluated
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Product Resistance List
The new Product Resistance List is a web based solution.
It is possible to download the program to a PC or CD for use when notconnected to the internet.
The resistance list is found as a link in Coatings, Products at www.jotun.com
and the direct address is www.jotunprl.com
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www.jotunprl.com
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What's new in the Resistance list?
Products:
Tankguard Zinc
Tankguard CPC
Tankguard HB
Tankguard Special
Tankguard Special Ultra
Advanced search function with MARPOL, IMO classes or IBC codes
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A "basic search"for methanol
Click anywhereon this line
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..and the resistancefor all our coatingsto methanol is listed
The Notes-textappear whenpointing at
them
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Changed to 6 months
Changed to 5 days
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Tailor made advice SEA based owner
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Chemical Resistance required
----- Far East / Arab Gulf & Red Sea
Chemicals; CCP; Palm OilChemicals depends on type of chemicals, but would suggestTankguard Special Ultra
CPP Tankguard HB would suffice
Palm Oil depending on the pretreatment, resulting in a certain level of FFA, probably
Tankguard Special Ultra would be best suggested
Tankguard HB pure epoxy
Tankguard Special Ultra high qualityphenolic epoxy
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Chemical Resistance required
----- Far East / Europe
----- Far East / Arab Gulf & Red Sea
----- Straits / Pakistan / India & China
FFAs & Chemicalszinc silicate Tankguard Zinc < 2%
pure epoxy Tankguard HB < 15%
common phenolic epoxy Tankguard Special < 40%
high end phenolic epoxy Tankguard Special Ultra 100%
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Chemical Resistance required
----- Far East / Europe
----- Far East / Arab Gulf & Red Sea
----- Straits / Pakistan / India & China
FFAs &ChemicalsWe need to have a closer look at what chemicals are actually shipped,
& checked with the Chemical Resistance ofTankguard Special Ultra
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Chemical Resistance required
Acetic Acid NR
Acetone R
Acid oil mixture R
Alcohol various grades R
Alkanes R
Alkyl Benzenes R
Aniline R
Butyl Acetate R
Butyl Acrylate R
n-Butyl Alcohol R
tert-Butyl Alcohol R
Butylene Glycol R
n-Butyl Ether R
Chloroform R
Citric Acid R
Cyclohexanol R
Cyclohexane R
Cyclohexanone R
Dodecane ( all isomers) R
Ethylene Glycol R
Formic Acid NR
Glycerine R
Hexanol R
Lauric Acid R
Linseed Oil R
Methyl tert Butyl Ether R
Methyl Ethyl Ketone R
Molasses R
Nitric Acid NR
Nonane R
Nonyl Alcohol R
Octane ( all isomers ) R
Olefin Oil R
Paraffin wax R
Phenol NR
Propylene Glycol R
Propylene Tetramer R
Rapeseed Oil R
Propylene Trimer R
Pyrolysis Gasoline ( containing benzene ) R
Styrene Monomer R
Toluene R
Urea solution R
Xylenes R
White spirit R
Tankguard Special Ultra
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Chemical Resistance required
Acetic Acid NR
Acetone R
Acid oil mixture R
Alcohol various grades R
Alkanes R
Alkyl Benzenes R
Aniline R
Butyl Acetate R
Butyl Acrylate R
n-Butyl Alcohol R
tert-Butyl Alcohol R
Butylene Glycol R
n-Butyl Ether R
Chloroform R
Citric Acid R
Cyclohexanol R
Cyclohexane R
Cyclohexanone R
Dodecane ( all isomers) R
Ethylene Glycol R
Formic Acid NR
Glycerine R
Hexanol R
Lauric Acid R
Linseed Oil R
Methyl tert Butyl Ether R
Methyl Ethyl Ketone R
Molasses R
Nitric Acid NR
Nonane R
Nonyl Alcohol R
Octane ( all isomers ) R
Olefin Oil R
Paraffin wax R
Phenol NR
Propylene Glycol R
Propylene Tetramer R
Rapeseed Oil R
Propylene Trimer R
Pyrolysis Gasoline ( containing benzene ) R
Styrene Monomer R
Toluene R
Urea solution R
Xylenes R
White spirit R
Tankguard Special Ultra
For 4 chemicals Tankguard Special Ultra doesnot have sufficient chemical resistance
However, feedback from owner:1. Based on the certificate of fitness aceticacid, nitric acidand formic acidshall onlybe loaded in STAINLESS STEEL tanks
2. Most suppliers/receivers prefer STAINLESS
STEEL tanks when shippingphenol
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Certain owners active the SEA region are typically having the requirement
out-bound: Palm Oilproducts, including Palm Fatty Acid Distillates
in-bound: methyl alcohol; MEG; Caustic Soda; pygas; luboil & others
In case the cargo tanks are coated with Tankguard Special Ultra, there areno limitations from the coatings point of view.
Chemical Resistance Required
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Pre-wash after carriage of aggressivecargoes and bio-fuels:
this can be accepted for all cargoesthat require this pre-wash
This includes executing pre-wash
after carriage ofmethanol.
Note: the pre-wash procedure needs to be discussed.
Chemical Resistance Required
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In general in cargo tank coating, care regarding subsequent cargoes,since risk of:
- Cargo contamination
- Negative effect of sequence of chemicals
But these risks are not applicable when back-2-back shipment.Hence, any cargo can be shipped back-2-back.
Chemical Resistance Required
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50% of the cargoes understood to be
FAMEEthanolCaustic sodaGasoil
MethanolCrude vegoil
Chemical Resistance required by European owner
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50% of the cargoes understood to be
FAME REthanol R 1B, 10 5 days ventilation for R1, R2, R16 & R18Caustic soda RGasoil R
Methanol R 4,18 5 days ventilation for R1, R2, R16 & R18Crude vegoil R
Tankguard Special Ultra has resistance for the above cargoes
Chemical Resistance required by European owner
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75% of the cargoes also including
MTBEAromaticsUreasXylenes
StyreneMolassesIsomeratesCyclo-hexaneRefined vegoils
Chemical Resistance required by
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75% of the cargoes also including
MTBE RAromatics RUreas RXylenes R
Styrene RMolasses RIsomerates RCyclo-hexane RRefined vegoils R
Tankguard Special Ultra has resistance for the above cargoes
Chemical Resistance required by
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V SHIPSSeptember 26th, 2012
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