ISO 16145-3:2012

INTERNATIONAL ISO
STANDARD 16145-3
First edition
2012-10-01
Ships and marine technology — Protective
coatings and inspection method —
Part 3:
Cargo oil tanks of crude oil tankers
Navires et technologie maritime — Revêtements de protection et
méthode d’inspection —
Partie 3: Réservoirs d’huile de chargement de réservoirs de pétrole brut
Reference number
©
ISO 2012
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ii © ISO 2012 – All rights reserved

Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 3
4.1 Symbols . 3
4.2 Abbreviated terms . 3
5 General procedures for coating work . 3
6 Standard for coating work . 4
6.1 Areas considered . 4
6.2 Surface preparation . 6
6.3 Primary surface preparation and shop priming . 7
6.4 Secondary surface preparation . 9
6.5 Coating .10
6.6 Treatment for coating defects .13
7 Inspection .14
7.1 Inspection procedure .14
7.2 Coating inspection .14
7.3 Dry film thickness measurement .16
Annex A (informative) Measurement of the conductivity for abrasives .21
Annex B (informative) Measurement of water soluble salt.23
Annex C (informative) Inspection items and management of inspection .25
Annex D (informative) Assessment of the degree of damage .30
Annex E (informative) Standard for coating technical file (CTF) .31
Bibliography .40
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16145-3 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee
SC 8, Ship design.
ISO 16145 consists of the following parts, under the general title Ships and marine technology — Protective
coatings and inspection method:
— Part 1: Dedicated sea water ballast tanks
— Part 2: Void spaces of bulk carriers and oil tankers
— Part 3: Cargo oil tanks of crude oil tankers
The following parts are under preparation:
— Part 4: Automated measuring method for the total amount of water-soluble salts
— Part 5: Assessment method for coating damages
iv © ISO 2012 – All rights reserved

Introduction
The ISO 16145 series addresses qualified coating and inspection works in accordance with the
requirements of IMO PSPC.
Technical Committee ISO/TC 8, Ships and marine technology, SC 8, Ship design has decided to standardize
a coating and inspection method for the IMO PSPC series.
Coating quality itself depends largely on the surface preparation and coating application. Therefore, the right
application of surface preparation and coating in accordance with coating manufacturer’s recommendations
including inspections at each step are of vital importance.
This part of ISO 16145 is intended to serve as a standard for ship owners, shipyards, coating manufacturers,
coating inspectors and coating applicators in applying IMO PSPC in the new building stage.
INTERNATIONAL STANDARD ISO 16145-3:2012(E)
Ships and marine technology — Protective coatings and
inspection method —
Part 3:
Cargo oil tanks of crude oil tankers
1 Scope
This part of ISO 16145 specifies a method of protective coatings and its inspection of cargo oil tanks for crude
oil tankers of not less than 5 000 tones deadweight, which are contracted for new building on or after 1 January
2013; or in the absence of a building contract, the keels of which are laid or which are at a similar stage of
construction on or after 1 July 2013; or the delivery of which is on or after 1 January 2016.
NOTE A crude oil tanker is an oil tanker engaged in the trade of carrying crude oil. This part of ISO 16145 applies to
crude oil tankers and crude oil/product carriers as defined in items 1.11.1 or 1.11.4 of the Supplement to the International
Oil Pollution Prevention Certificate (Form B).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable
for its application. For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
ISO 8501-1:2007, Preparation of steel substrates before application of paints and related products — Visual
assessment of surface cleanliness — Part 1: Rust grades and preparation grades of uncoated steel substrates
and of steel substrates after overall removal of previous coatings
1)
ISO 8501-3:2001 , Preparation of steel substrates before application of paints and related products — Visual
assessment of surface cleanliness — Part 3: Preparation grades of welds, cut edges and other areas with
surface imperfections
ISO 8502-3:1992, Preparation of steel substrates before application of paints and related products — Tests for
the assessment of surface cleanliness — Part 3: Assessment of dust on steel surfaces prepared for painting
(pressure-sensitive tape method)
ISO 8502-9:1998, Preparation of steel substrates before application of paints and related products — Tests for
the assessment of surface cleanliness — Part 9: Field method for the conductometric determination of water-
soluble salts
ISO 8503-1:2012, Preparation of steel substrates before application of paints and related products — Surface
roughness characteristics of blast-cleaned steel substrates — Part 1: Specifications and definitions for ISO
surface profile comparators for the assessment of abrasive
ISO 8503-2:2012, Preparation of steel substrates before application of paints and related products — Surface
roughness characteristics of blast-cleaned steel substrates — Part 2: Method for the grading of surface profile
of abrasive blast-cleaned steel — Comparator procedure
IACS UI SC223, For Application of SOLAS Regulation II-1/3-2 Performance Standard for Protective Coatings
(PSPC) for Dedicated Seawater Ballast Tanks in All Types of Ships and Double-side Skin Spaces of Bulk
Carriers, adopted by Resolution MSC.215 (82)
IMO Res.MSC.288 (87), Performance standard for protective coatings for cargo oil tanks of crude oil tankers
1) Withdrawn International Standard revised by ISO 8501-3:2006.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
90/10 rule
rule according to which 90% of all thickness measurements should be greater than or equal to nominal dry film
thickness (NDFT) and none of the remaining 10% measurements shall be below 90% of NDFT
3.2
abrasive
metallic or non-metallic particles which are used in blasting work for removing mill scale, rust or foreign
substance on the surface to be coated using pressurized air or a high-speed rotating impeller
NOTE A steel shot ball is used mainly in the primary surface preparation and steel grit is used mainly in the secondary
surface preparation; however, garnet or non-metallic abrasives may be used in some circumstances.
3.3
coating inspector
qualified person certified to at least NACE Coating Inspector Level 2, FROSIO Inspector Level III, or an equivalent
qualification with at least two years’ documented relevant coating inspection experience and as agreed by ship
owner, shipyard and coating manufacturer as specified in IACS UI SC223, adopted by Resolution MSC.215 (82)
3.4
erection
final assembly of blocks or pre-erected blocks
EXAMPLE On the dry dock or ground building berth.
3.5
line quality controller
line QC
person, other than the coating inspector or assistant to the coating inspector, who carries out the inspection
work prior to the official inspection
3.6
measurement of representative dry film thickness (DFT)
measurement of typical dry film thickness (DFT) after each main coating in order to use it as a reference in a
follow-up coating by measuring the film thickness of certain representative parts of the compartment
NOTE It is not necessary to keep a record of the representative DFT.
3.7
pre-erection
assembly of blocks in large units corresponding to the crane capacity for erection
3.8
shop primer
prefabrication primer coating applied to steel plates, often in automatic plants (and before the first coat of a
coating system)
3.9
stain
light shadows, slight streaks or minor discolorations
2 © ISO 2012 – All rights reserved

4 Symbols and abbreviated terms
4.1 Symbols
C electric conductivity of solutions
m
C electric conductivity of abrasive
s
K cell constant
4.2 Abbreviated terms
CTF coating technical file
DFT dry film thickness
FROSIO Faglig Råd for Opplæring og Sertifisering av Inspektører innen Overflatebehandling
(The Norwegian Professional Council for Education and Certification of Inspectors
for Surface Treatment)
IACS International Association of Classification Societies Ltd
IMO International Maritime Organization
JSRA-SPSS The Shipbuilding Research Association of Japan - Standard for the preparation of
steel surface prior to painting
JSTRA SPSS for PSPC Japan Ship Technology Research Association - Standard for the preparation of
steel substrate for PSPC (SPSS for PSPC)
NACE NACE International
NDFT nominal dry film thickness
PSPC performance standard for protective coatings
QA quality assurance
QC quality control
SOC statement of compliance
SSPC The Society for Protective Coatings (former Steel Structure Painting Council, USA)
TAC type approval certificate
COT cargo oil tank
5 General procedures for coating work
The typical hull construction process for coating is listed in Table 1 below.
...