new rules for crude oil tanks
TRANSCRIPT
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8/10/2019 New Rules for Crude Oil Tanks
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New Rules for Crude Oil Tanks
Guiding you through the changes
We have established a dedicated team of experienced people, committed to guide you through
the IMO PSPC implementation phase and are well placed to provide owners and shipyards with
sound guidance in the future.
For further information please contact:
Region Name Job title Email address
Europe, Middle East, Africa Andrew Maidment Technical Service Support Manager [email protected]
Americas John Kelly Technical Manager [email protected]
India, South East Asia, China Khiew Lee Yen Technical Operations Executive [email protected]
Japan, Australasia, Korea JongJin Jung Technical Manager [email protected]
International Paint Ltd,
Stoneygate Lane, Felling
Gateshead, NE10 0JYUnited Kingdom
Call: +44 (0)191 469 6111
Fax:+44 (0)191 495 2003
Send an email:
Visit our website:
www.international-marine.com/pspc
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Important Notes:
All representations and statements concerning the product(s) in this pu blication are accurate to the best
of our knowledge. Statements made in this publication are advisory only and are not intended to be specific
recommendations or warranties of any product, combination of products or fitness for any particular purpose.
To the extent permitted by law, we do not accept any liability to any person for any loss or damage ( direct
or indirect) that may arise from any use or reliance on any of the methods or information contained in this
publication for any purpose.
Unless otherwise agreed in writing, all products supplied and technical advice or recommendations given
are subject to the Conditions of Sale of our supplying company. Any warranties, if given, are contained in
those standard Conditions of Sale and are the only ones made with respect to any products we sell to you
or advice or recommendations we give to you.
We hereby disclaim any warranties or representations, expressed or implied, by operation of law or otherwise,
including, without limitation, any implied warranty of merchantability or fitness for a particular purpose.
For each of our products the relevant Product Data Sheet, Material Safety Data Sheet and package labelling
comprise an integral information system about the product in question. Copies of our Product Data Sheets
and Material Safety Data Sheets are available on request or from our website: www.international-marine.com
and Internationaland all products mentioned in this publication are trademarks of, or are licensed to,
AkzoNobel. AkzoNobel, 2012
International Paint Ltd is part of AkzoNobel,the Netherlands based company servingcustomers throughout the world withcoatings and chemicals.
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8/10/2019 New Rules for Crude Oil Tanks
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NO SMOKING
Aggressive
components
in crude oil
(sludge)
Corrosion
of deck
head plating
COHO SOX
HS
60C
THERMALCYCLING
25C
Condensation
InertGas
InertGas
InertGas
InertGas
InertGas
InertGas
oaded -
orrosion potential
rom thermal cycling
Loaded - Corrosion potential from thermal cycling
NO SMOKING
Pitting and ruststaining
of thetanktop
STEELPLATE
DRAIN WATER
OILCOAT
Pitting(Anode)
Sludge(Cathode)
HSINERT
GASINERT
GAS
Unloaded - Corrosion potential from pitting in tank bottom
* Note
1) Dimension A to be from upper most PMA height to upper deck height
0.3m
SIDE C.O.TANK
UPPER DECK
W.B.TKS
W.B.TKS CENTER C.O.TANK
First tripping bracket
Detail (typ. ) for BHD
CL
A
Bulkhead
Trans. Web.
OUTERLONGLBHD
SIDESHEL
L
INNERLONG
LBHD
Typical section of V.L.C.C
*
Why is there the need for the new performance standard?
The change from single hull to the introduction of
double hull structural arrangements for crude oil
tankers has revealed a number of double hull tankers
suffering from accelerated corrosion in areas of their
cargo tanks due to a thermal barrier which promoted
a more aggressive corrosive environment.
It has become common practice for many leading
owners and shipyards to use sound protective
coatings in the upper and lower areas of cargo tank
spaces. Now, these new regulations mean that
certain areas of cargo tanks must be suitably coated
for all new crude oil tankers above 5000 dwt.
The new IMO PSPC COT performance standard
A new set of SOLAS regulations, approved at MSC87 in May 2010, are effective for new crude oil
tankers from 1st January 2013 under the IMO Performance Standard for Protective Coatings of
Cargo Oil Tanks (IMO PSPC COT).
Just like IMO PSPC for water ballast tanks, the new
standard, designed to ensure longevity of cargo
oil tank coatings, stipulates that coatings must
remain in good condition for a minimum of 15
years - as defined by the International Association
of Classification Societies (IACS).
For a cargo oil tank coating to comply, all coatings
must have a Type Approval Certificate (TAC) which
means that the product has demonstrated the
expected performance, the quality of the supplied
material is assured and that the supply location has
met the requirements of the body issuing the TAC.
All coatings used within the cargo oil tanks must
now comply with PSPC regulations for crude oil
tanks on vessels greater than 5000 dwt at new
building, where:
The building contract is placed on or after 1st
January 2013 or, in the absence of a buildingcontract,
The keels of which are laid or which are at a
similar stage of construction on or after 1st July
2013,
Or the delivery of which is on or after 1st
January 2016.
What areas are affected by the new regulations?
The following areas are the minimum areas that shall be protected according to the standard:
Key coating requirements of IMO PSPC COT
Coating target useful life of 15 years for which it is
intended to be in GOOD condition
Epoxy coatings, to be applied as a multi-coat
system with a light top colour to aid inspection
The nominal dry lm thickness judged according
to the 90/10 rule to be 320 m
Zinc silicate shop primer inhibitor free, orequivalent accepted
A Type Approval Certicate (TAC) demonstrating
the expected coating performance and quality is
to be issued by a third party, independent of the
coating manufacturer
Surface preparation and coating application
throughout the coating process is to be inspected
to ensure compliance with this standard
Inspection results to be recorded in the ships
coating technical file.
Protecting your assets
For the foreseeable future, crude oil tankers will be
exposed to a corrosive environment. However, in
conjunction with the existing compulsory requirement
to coat ballast tanks, the new PSPC requirement
to coat the crude oil cargo tanks on new tankers
means that the basis for a long service life with limited
corrosion of essential structures should now be
possible.
For todays tanker operators, high quality protective
coatings offer a real cost-effective and practical route
to protection of crude oil cargo tanks from corrosion.
The choice of anticorrosive can have a major impact
on shipyard production and on-board operating
costs. Choose carefully; coatings must provide the
correct balance of properties to optimise the return
on investment for tanker owners / operators and
shipyards.
Deckhead with complete internal structure,
including brackets connecting to longitudinal and
transverse bulkheads.
Longitudinal and transverse bulkheads to becoated to the uppermost means of access level.
On cargo tank bulkheads without an uppermost
means of access the coating to extend to 10% of
the tanks height at centreline but need not extend
more than 3 m down from the deck.
Flat inner bottom and all structure to height of
0.3 m above inner bottom to be coated.
KEY
W.B. TKS = Water ballast tanks
OUTER LONGL BHD =
Outer longitudinal bulkhead
INNER LONGL BHD =
Inner longitudinal bulkhead
C.O. TANK = Cargo oil tank
Detail (typ.) for BHD =
Detail (typical) for bulkhead
Trans. Web. = Transverse web frame
PMA = Permanent Means of Access
Shaded areas only to be painted