ISO 18797-1:2016
(Main)Petroleum, petrochemical and natural gas industries - External corrosion protection of risers by coatings and linings - Part 1: Elastomeric coating systems-polychloroprene or EPDM
Petroleum, petrochemical and natural gas industries - External corrosion protection of risers by coatings and linings - Part 1: Elastomeric coating systems-polychloroprene or EPDM
ISO 18797-1:2016 specifies the minimum requirements for materials selection, surface preparation, application, inspection, testing, qualification and acceptance criteria of external coating for steel risers pipes used in the splash zone, their field joints and clamps/guides, using an elastomeric protective coating based on polychloroprene, EPDM or equivalent. This is applicable for new construction and repair of applied pipes before installation. Maintenance requirements and field repairs are covered in ISO 18797-2. ISO 18797-1:2016 also specifies the requirements for transportation, handling and storage of riser pipes before and after surface preparation and coating application.
Industries du pétrole, de la pétrochimie et du gaz naturel — Protection de la corrosion externe des tubes de production par revêtements et doublures — Partie 1: Systèmes de revêtement élastomère-polychloroprène ou EPDM
L'ISO 18797-1:2016 spécifie les exigences minimales applicables à la sélection des matériaux, à la préparation de surface, à l'application, à l'inspection, aux essais, à la qualification et aux critères d'acceptation de revêtement externe pour tuyaux de risers en acier utilisés dans la zone d'action des vagues, leurs joints soudés sur site et colliers/guides, au moyen d'un revêtement de protection en élastomère à base de polychloroprène, EPDM ou équivalent. Cela concerne les nouvelles constructions et les réparations de tuyaux appliqués avant installation. Les exigences de maintenance et les réparations sur site sont traitées dans l'ISO 18797‑2. L'ISO 18797-1:2016 spécifie également les exigences de transport, de manutention et de stockage des tuyaux de risers avant et après la préparation de surface et l'application du revêtement.
General Information
Overview
ISO 18797-1:2016 provides minimum technical requirements for the external corrosion protection of risers in the petroleum, petrochemical and natural gas industries using elastomeric coating systems based on polychloroprene, EPDM or equivalent. The standard covers materials selection, surface preparation, application, inspection, testing, qualification and acceptance criteria for coated steel riser pipes used in the splash zone, including field joints and clamps/guides. It applies to new construction and pre-installation repairs; in-service maintenance and field repairs are addressed in ISO 18797-2.
Key topics and technical requirements
- Materials and handling
- Minimum requirements for elastomeric coating materials (polychloroprene, EPDM or equivalents)
- Packaging, transportation, storage and handling of pipes and coating materials before/after surface preparation
- Surface preparation
- Removal of contaminants and pipe imperfections
- Abrasive blast cleaning as a core preparatory method
- Coating application
- Priming and application methods for blast-cleaned surfaces
- Vulcanization and manual application for clamps, guides, bolt holes and flanges
- Procedures for coating of field joints and pre-installation repairs
- Inspection and testing
- Visual inspection, holiday detection, thickness measurement, adhesion (bond) testing, hardness testing
- Elastomer-specific tests: tensile, tear, elongation, compression set, abrasion, ozone resistance, specific gravity, cathodic disbondment, thermal conductivity and vulcanization characteristics
- Ultrasonic and sound testing for defect detection
- Qualification, documentation and quality
- Qualification of application and inspection personnel
- Test reports, batch certificates and acceptance/rejection criteria
- Requirements for handling and stacking coated pipes
Practical applications and users
ISO 18797-1 is intended for organizations and professionals involved in offshore and nearshore riser installation and fabrication:
- Corrosion and materials engineers specifying riser protection systems
- Coating manufacturers and suppliers of polychloroprene/EPDM systems
- Offshore fabricators and pipe coating contractors performing pre-installation application
- QA/QC and inspection teams performing coating verification and acceptance
- Asset owners and operators defining procurement and inspection criteria for risers in the splash zone
This standard supports reliability and asset protection by reducing external corrosion risks to risers exposed to cyclic wet/dry splash-zone conditions.
Related standards
- ISO 18797-2 (maintenance and field repairs)
- Referenced test standards such as ISO 34, ISO 37, ISO 48, ISO 813/ISO 814, ISO 815 and ISO 1431-1 for elastomer property testing
- Developed under ISO/TC 67 (materials, equipment and offshore structures)
Keywords: external corrosion protection, risers, elastomeric coating, polychloroprene, EPDM, splash zone, riser pipes, coating application, surface preparation, inspection and testing.
Standards Content (Sample)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18797-1
ISO/TC 67 Secretariat: NEN
Voting begins on: Voting terminates on:
2015-09-14 2015-12-14
Petroleum, petrochemicals and natural gas industries —
External corrosion protection of risers by coatings and
linings —
Part 1:
Elastomeric coating systems — Polychloroprene or EPDM
Titre manque
ICS: 75.180.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 18797-1:2015(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2015
ISO/DIS 18797-1:2015(E)
© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved
ISO/DIS 18797-1
Contents Page
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 3
3.1 Terms and definitions . 3
3.2 Abbreviated terms . 5
4 Pre-work requirements . 6
4.1 General . 6
4.2 Health, safety and environmental (HSE) . 6
4.3 Qualification of coating/lining application and inspection personnel . 6
5 Materials . 7
5.1 General requirements . 7
5.2 Material requirements . 8
5.3 Materials packing, handling and storage . 9
5.4 Coating materials . 9
6 Bare pipes transportation, handling and storage . 10
6.1 Transportation and handling of pipes . 10
6.2 Storage of pipes . 10
7 Surface preparation . 10
7.1 General . 10
7.2 Pipe imperfections/damages removal . 11
7.3 Contaminants removal . 11
7.4 Abrasive blast cleaning . 11
8 Coating application for risers. 12
8.1 General . 12
8.2 Priming and coating on abrasive blast cleaned surface . 13
8.3 Polychloroprene or EPDM application and vulcanization . 14
8.4 Manual coating application on clamps, guides, bolt holes, inner sections of flanges and
pipe section used for modifications at worksites . 15
8.5 Coating application of field joints . 15
8.6 Coating repair . 16
9 Inspection and testing . 16
9.1 General . 16
9.2 Testing of elastomer properties . 16
9.3 Inspection/testing of coated pipes . 18
9.4 Inspection and testing of field joint coating . 20
9.5 Test reports and certificate of compliance . 20
10 Coating damage/defect repair . 20
10.1 Defect acceptance criteria . 20
10.2 Repair procedures . 21
11 Handling and stacking of coated pipes . 21
12 Quality requirements . 22
13 Documentation . 22
Annex A (informative) Contents in a batch certificate . 23
ISO/DIS 18797-1
Annex B (normative) Physical properties of polychloroprene or EPDM elastomer . 24
Annex C (normative) Riser pipe external coating progress chart . 26
Bibliography . 28
iv © ISO 2014 – All rights reserved
ISO/DIS 18797-1
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.
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the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received. www.iso.org/patents
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO's adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
ISO 18797-1 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries.
ISO 18797 consists of the following parts, under the general title Petroleum, petrochemical and natural gas
industries — External corrosion protection of risers by coatings and linings:
Part 1: Elastomeric coating systems-polychloroprene or EPDM
Part 2: Maintenance and field repair
ISO/DIS 18797-1
Introduction
This part of ISO 18797 is based on GSO 2273. This International Standard defines the minimum technical
requirements for the external corrosion protection of risers by coatings and linings based on elastomeric
coating systems-polychloroprene, EPDM or equivalent elastomeric coatings that are employed in the oil and
gas industry and provides technical guidance for developing local standards and specifications in order to
ensure compliance in coating and lining material selection and performance with contract requirements.
Users of this International Standard should be aware that further or differing requirements can be needed for
individual applications. This International Standard is not limiting the contractor and/or manufacturer from
proposing or company from accepting alternative engineering solutions for the individual application. This can
be particularly applicable where there is innovative or developing technology. Where an alternative is
proposed, the specification issuer should identify any deviations from this International Standard and provide
details.
This International Standard does not incorporate any form of passive fireproofing requirements or any related
compatibility issues. Any requirements with regards to passive fireproofing should be addressed separately.
vi © ISO 2014 – All rights reserved
DRAFT INTERNATIONAL STANDARD ISO/DIS 18797-1
Petroleum, petrochemical and natural gas industries — External
corrosion protection of risers by coatings and linings — Part 1:
Elastomeric coating systems-polychloroprene or EPDM
1 Scope
This International Standard specifies the minimum requirements for materials selection, surface preparation,
application, inspection, testing, qualification and acceptance criteria of external coating for steel risers pipes
used in the splash zone, their field joints and clamps/guides, using an elastomeric protective coating based on
polychloroprene, EPDM or equivalent. This is applicable for new construction and repair of applied pipes
before installation. Maintenance requirements and field repairs is covered in Part-2.
This International Standard also specifies the requirements for transportation, handling and storage of riser
pipes before and after surface preparation and coating application.
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 34 (all parts), Rubber, vulcanized or thermoplastic ― Determination of tear strength
ISO 37, Rubber, vulcanized or thermoplastic ― Determination of tensile stress-strain properties
ISO 48, Rubber, vulcanized or thermoplastic ― Determination of hardness (hardness between 10 IRHD and
100 IRHD)
ISO 813, Rubber, vulcanized or thermoplastic ― Determination of adhesion to rigid substrate - 90 Degrees
peel method
ISO 814, Rubber, vulcanized or thermoplastic ― Determination of adhesion to metal ― Two-plate method
ISO 815-1, Rubber, vulcanized or thermoplastic, Determination of compression set ― Part 1: At ambient or
elevated temperatures
ISO 815-2, Rubber, vulcanized or thermoplastic, Determination of compression set ― Part-2: At low
temperatures
ISO 1431-1, Rubber, vulcanized or thermoplastic ― Resistance to ozone cracking ― Part 1: Static and
dynamic strain testing
ISO 1817, Rubber, vulcanized or thermoplastic ― Determination of the effect of liquids
ISO 2781, Rubber, vulcanized or thermoplastic ― Determination of density
ISO 2812-2, Paints and varnishes ― Determination of resistance to liquids ― Part 2: Water immersion
method
ISO 4649, Rubber, vulcanized or thermoplastic ― Determination of abrasion resistance using a rotating
cylindrical drum device
ISO/DIS 18797-1
ISO 7619-1, Rubber, vulcanized or thermoplastic ― Determination of indentation hardness ― Part 1:
Durometer method (Shore hardness)
ISO 8501-1, Preparation of steel substrate 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 Note: SSPC SP10 is equivalent to
ISO 8501-1
ISO 8502-2, Preparation of steel substrate before application of paints and related products ― Tests for the
assessment of surface cleanliness ― Part 2: Laboratory determination of chloride on cleaned surfaces
ISO 8502-3, 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 8502-4, Preparation of steel substrates before application of paints and related products ― Tests for the
assessment of surface cleanliness ― Part 4: Guidance on the estimation of the probability of condensation
prior to paint application
ISO 8502-5, Preparation of steel substrates before application of paints and related products ― Tests for the
assessment of surface cleanliness ― Part 5: Measurement of chloride on steel surfaces prepared for painting
(ion detection tube method)
ISO 8502-6, Preparation of steel substrate before application of paints and related products Tests for the
assessment of surface cleanliness ― Part 6: Extraction of soluble contaminants for analysis Bresle method
ISO 8502-9, Preparation of steel substrate 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 8503-2, Preparation of steel substrate before application of paints and related products ― Surface
roughness characteristics of blast-cleaned steel substrates ― Part 2: Method for grading of surface profile of
abrasive blast-cleaned steel ― Comparator procedure
ISO 8503-4, Preparation of steel substrates before application of paints and related products ― Surface
roughness characteristics of blast-cleaned steel substrates ― Part 4: Method for the calibration of ISO surface
profile comparators and for the determination of surface profile ― Stylus instrument procedure
ISO 8503-5, Preparation of steel substrates before application of paints and related products ― Surface
roughness characteristics of blast-cleaned steel substrates ― Part 5: Replica tape method for the
determination of the surface profile
ISO 10474, Steel and steel products ― Inspection documents
ISO 11126 (all parts), Preparation of steel substrates before application of paints and related products ―
Specifications for Non-metallic blast-cleaning abrasives
EN 12664, Thermal performance of building materials and products ― Determination of thermal resistance by
means of guarded hot plate and heat flow meter methods ― Dry and moist Products of medium and low
thermal resistance
EN 14879-4: Organic coating systems and linings of protection of industrial apparatus and plants against
corrosion caused by aggressive media – Part 4: Linings on metallic components
ISO 21457, Petroleum, petrochemical and natural gas industries — Materials selection and corrosion control
for oil and gas production systems
ISO/DIS 18797-1
ISO 21809-3, Petroleum and natural gas industries — External coatings for buried or submerged pipelines
used in pipeline transportation systems — Part 3: Field joint coatings
ISO 29601, Paints and varnishes -- Corrosion protection by protective paint systems ― Assessment of
porosity in a dry film
API RP 5LW, Recommended practice for transportation of line pipe on barges and marine vessels
API RP 5L1, Recommended practice for railroad transportation of the pipe
ASTM D2084, Standard test method for rubber property ― Vulcanization using oscillating disc cure meter
ASTM D4285, Standard test method for indicating oil or water in compressed air
ASTM D5894, Standard practice for cyclic salt fog/UV exposure of painted metal, (alternating exposures in a
fog/dry cabinet and a UV/condensation cabinet)
SSPC-AB 2, Cleanliness of recycled ferrous metallic abrasive
SSPC-PA 2, Coating application standard No.2 ― Procedure for determining conformance to dry coating
thickness requirements
SSPC-SP 1, Surface preparation specification No.1 ― Solvent cleaning
SSPC-SP 10/NACE No. 2, Joint surface preparation standard ―- Near white metal blast cleaning
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1.1
atmospheric zone
areas of offshore structures and riser pipes that extend upward from the splash zone up to top decks of the
platform which are exposed to sun, wind, sprays and rains
3.1.2
applicator
organization appointed by contractor/client to perform application of coatings/linings on riser pipes as per
project procedures prepared in accordance with this International Standard
3.1.3
contractor
organization appointed by the client to perform the works in accordance with this International Standard
3.1.4
client
organization for which professional services are rendered or person that receives a product
3.1.5
dew point
temperature at which moisture in air will condense out on to a solid surface, like blast cleaned metal surface or
newly coated surfaces
ISO/DIS 18797-1
3.1.6
dust
loose fine particulate matter present on a steel surface prepared for rubber lining, arising from blast cleaning
or other grinding activities or from worksite environments
3.1.7
elastomeric coatings
flexible skins, permanently bonded to risers and structures
Note 1 to entry: Elastomeric coatings are designed and developed to withstand aggressive environment or conditions
affecting platform structures and risers in marine splash zones. These provide add on durability to designed life to
structures and risers in offshore environment, while providing resistance to sea water ingression, ozone oxidation, erosion
and abrasion.
3.1.8
ethylene propylene diene monomer
EPDM
elastomeric compound or synthetic rubber applied as a protective coating on riser pipes in splash zones to
withstand erosion of riser pipe material caused by continuous exposure to sea water and wave actions
Note 1 to entry: EPDM provides resistance to outdoor and high temperature services in the range of 350 °C to
1 200 °C.
3.1.9
flash rusting
slight rust formation on a freshly blast cleaned carbon steel surfaces due to humidity in air and if not painted
within four hours from start of blasting
3.1.10
holiday
discontinuity in a protective coating (cracks, pinholes, voids, etc.) that exhibits electrical conductivity when
exposed to specific voltage
Note 1 to entry: Holiday also means a small defect in the lining that would permit corrosion of substrate under service
conditions for which lining is designed. The term can be considered synonymous with cracks or mechanical damages
occurred in rubber lining, while in services.
3.1.11
manufacturer
organization responsible for the manufacture of coating material(s)
3.1.12
platform
offshore structure used to accommodate oil and gas wells related production equipment, pipelines and living
quarters
3.1.13
production batch
one loading capacity of the internal mixer used for preparing the mixed rubber prior to forming strip of sheet
3.1.14
polychloroprene
light yellow synthetic rubber compound obtained by polymerization of chloroprene
Note 1 to entry: Polychloroprene is commonly known as neoprene compound.
Note 2 to entry: Polychloroprene is applied as a protective coating on riser pipes in splash zones and below to
withstand erosion of riser pipe material caused by continuous exposure to sea water and wave actions. It provides
resistance to outdoor and services temperature in the range of 35 °C to 90 °C.
ISO/DIS 18797-1
3.1.15
riser
section of pipeline carrying crude/gas between ocean floor and upper decks of platform on offshore structures
3.1.16
shore hardness
methods for determining the hardness of materials by means of durometer
3.1.17
site
lands and waters and other places on, under, in or through which the works are to be carried out and any
other lands, waters or places provided by the client for the purposes of the contract together with any other
places designated in the contract
3.1.18
splash zone
external surfaces of an offshore structure or pipeline that are, periodically wet and dry by the influence of the
astronomical tides, winds and waves. The limits are as defined by the contract specifications
3.1.19
surface profile
micro-roughness of surface generally expressed as an average of height of highest peaks relative to lowest
valleys sometime referred to as amplitude
3.1.20
vulcanization
curing of elastomeric materials by chemical reaction under heat and pressure to improve strength and
elasticity of applied rubber lining
3.1.21
works
activities to be executed in accordance with the contract, as defined in the specified conditions and including
both permanent and temporary activities
3.2 Abbreviated terms
µm micrometer (microns)
ASTM American Society for Testing and Materials
BS British Standard
DFT Dry Film Thickness
HSE Health, safety and environment
ITP Inspection Test Plan
MS Method Statement
MSDS Material Safety Data Sheet
NACE National Association of Corrosion Engineers
NPS Nominal Pipe Size
pphm parts per hundred million
ISO/DIS 18797-1
PPT Pre-Production Trial
PQT Procedure Qualification Trial
QA/QC Quality Assurance/Quality Control
SSPC The Society for Protective Coatings
4 Pre-work requirements
4.1 General
4.1.1 All requirements in this International Standard and the referenced documents shall be followed,
except if they are modified or supplemented by project specification or datasheet.
4.1.2 The equipment, materials, consumables, spaces, and stockpile areas that are necessary to carry out
surface preparation, coating application, qualification testing, inspection and QA/QC shall be in accordance
with this International standard and in a manner satisfactory to the client.
4.1.3 Surface preparation, priming, coating application, qualification testing / inspection and QA/QC works
shall be carried out in a continuous sequence as per this International standard and as recommended by the
manufacturers, unless otherwise specified by the client.
4.2 Health, safety and environmental (HSE)
4.2.1 All necessary health, safety and environmental (HSE) procedures shall be employed to protect
personnel and the surrounding environment during on-site/field works. The contractors shall submit their HSE
manual for client's approval. The approved HSE procedures for the safe coating/lining processes shall be
strictly followed.
4.2.2 All relevant international safety requirements, client's safety regulations for contractors and lifting
equipment regulations shall be adhered, while performing coating and lining works.
4.2.3 Materials safety data sheets (MSDS) for all chemicals to be used within client's operation areas shall
be submitted to the client for review and approval. Health and safety precautions shall be clearly described on
each materials container/package.
4.2.4 All wastes resulting from supply, preparation and application shall be contained, collected and
properly disposed of in accordance with international/local environmental protection standards/regulations.
4.3 Qualification of coating/lining application and inspection personnel
4.3.1 The coating/lining operatives shall be competent to undertake the coating application, inspection/
testing procedures and repair work. The qualification shall be obtained as agreed with the client or by
demonstration at a procedure qualification trial (PQT) during pre-production trial (PPT).
4.3.2 Inspectors and applicator personnel carrying out the coating inspection shall be competent to carry
out the requirements of this International Standard. The applicator shall request the manufacturer of the
coating/lining material(s) and equipment to provide technical assistance to the coating/lining operatives if
necessary.
ISO/DIS 18797-1
5 Materials
5.1 General requirements
5.1.1 The general requirements for the selection of materials for coating system and surface preparation
shall be in accordance with ISO 21457. Materials proposed for coating of the riser pipe shall be tested by the
product manufacturer and approved by the client before use. Non-conforming materials shall be rejected and
replaced with approved materials. Test certificates shall be provided for all materials.
5.1.2 Identification of corrosion mechanism and parameter for evaluation when performing selection of
materials for pipelines, piping related to transport and processing of hydrocarbon production including utility,
injection system and well heads shall be in accordance with ISO 21457.
NOTE ISO 21457 refers to materials that are generally available with properties that are known and documented. It
also allows other materials to be evaluated and qualified for use.
5.1.3 Materials shall be of high quality, uniform in composition and free from all inclusions and foreign
contaminants.
5.1.4 Materials shall not contain any asbestos/fibrous constituents, i.e., fibrous fillers or asbestos felt.
5.1.5 The contractor shall provide details of manufacturer, materials composition, technical specification,
physical properties, data sheets and test certificates for all materials, prior to use, for the client's review and
approval. The client has the right to request a complete performance test for any material used during the
surface preparation and coating processes. The contractor and/or lining applicator shall select
polychloroprene or EPDM compound, which is suitable for company specified characteristics and services and
also select adhesive system, which will provide an adequate bond between rubber and riser pipe surface to
ascertain designed life of services in sea water splash zone. Adhesive system shall depend upon type of
rubber compound and method of vulcanization.
5.1.6 The client shall at least provide the following characteristics of riser lines or pipe sections to be coated
with polychloroprene or EPDM rubber:
a) nominal diameter;
b) wall thickness;
c) type of pipe joint;
d) design temperature (max-min);
e) operating temperature (max-min);
f) design pressure, service – sea water splash zone;
g) chemical analysis of sea water and designed service life of coating while indicating special site
requirements.
5.1.7 Rubber compound and adhesive system shall be selected on basis of previous project references and
industry experience to ascertain that it is suitable for specified services. If this requirement could not be
satisfied, appropriate testing shall be carried out as per manufacturer’s recommendations. Where it is not
possible to test sample elastomer lining in actual conditions, specified service conditions shall be simulated
accurately.
5.1.8 Polychloroprene and EPDM coating as described in this International Standard comprise the following
coats or layers of coating materials:
ISO/DIS 18797-1
a) 1st coat – Primer coat that shall be compatible with the bonding agent and is bonded adequately to the
steel substrate;
b) 2nd coat – Bonding agent that shall be compatible with both the primer and the elastomer coating;
c) 3rd coat – Tack cement rubber solution (rubber compound solution); if deemed necessary.
d) 4th coat – Elastomeric coating material (polychloroprene or EPDM).
5.1.9 Elastomer compound and adhesive manufacturing facility and in-house testing laboratory shall be in
compliance with the Quality Management System requirements.
5.1.10 The materials shall be compatible with each other to provide adequate bonding when vulcanized to
enhance inbuilt chemical and physical properties as desired for corrosion protection of riser pipes in the
splash zone.
5.1.11 Nylon tape to be wrapped temporarily over the elastomer coated pipe shall be of sufficient strength to
withstand tension and secure coating tightly adherent to substrate. It shall also withstand autoclave
temperatures during the vulcanization process.
5.1.12 The contractor/applicator shall provide the following to the client for review and approvals, well before
entering into actual application of elastomer coating on specified surfaces:
a) name and number of elastomer compound;
b) test panels coated with proposed elastomer compound and vulcanized as a reference sample;
c) test certificate by in-house laboratory as well as client's designated external laboratory certifying
qualification of polychloroprene and/or EPDM, meeting desired chemical and physical properties along
with satisfaction of special considerations, if any.
5.1.13 Clearance for usage shall be obtained for coating materials to be used on riser pipes in sea water
splash zone from local and international environment authorities governing or controlling marine pollution to
specified norms.
5.1.14 On client’s approval of selected elastomeric coating/ lining, the applicator shall assess site
requirements, prepare method statement (MS), inspection test plan (ITP) and quality assurance/quality control
documentations and submit to the client for approval.
5.1.15 After approval of documents (as in 5.1.14) the applicator shall arrange for procedure qualification trial
(PQT), demonstrating coating work to be carried out on automatic pipe coating machine and also by hand lay
methods, while producing a test sample (as required in 5.1.12). The PQT shall be witnessed by the contractor,
client and coating material manufacturer for approvals.
5.2 Material requirements
5.2.1 Polychloroprene elastomer coatings for risers shall be suitable for use in sea water, ambient air
temperatures down to 35 °C and service temperatures of maximum +90 °C for the specified design life.
5.2.2 Ethylene propylene diene monomer (EPDM) elastomer coatings for risers shall be suitable for use in
sea water, ambient air temperatures down to 35 °C and service temperatures of maximum +120 °C for the
specified design life.
5.2.3 Other equivalent products shall comply with the material requirements specified within this
International Standard.
ISO/DIS 18797-1
5.3 Materials packing, handling and storage
5.3.1 All materials shall be supplied in manufacturer’s original packaging in an undamaged condition to the
plant/coating yard, clearly marked with the batch code, storage conditions, date of manufacture, shelf life and
accompanied with the relevant batch certificate. The content of a batch certificate for different coating
materials are shown in Annex A for reference.
5.3.2 All materials taken to work site shall be stored in covered, cool, dry, well-ventilated areas and shall be
kept clean, dry and free from any contaminants prior to and during application in addition to the
manufacturer’s recommendations. Any material that has been affected by the climate or contaminated in any
way shall be rejected and replaced with approved materials.
5.4 Coating materials
5.4.1 All coating materials, in any one system, should originate from one client's approved manufacturer
with his assurance that they are fully compatible with one another.
5.4.2 Bulk of coating materials shall be stored in air conditioned store rooms at temperature and under
conditions as specified by material manufacturer as it should not be affected by climate or other factors.
Coating materials found in unusable conditions shall be replaced by new stocks. Materials shall be used on
first-in-first-out basis stock rotations. Expired material shall be quarantined and then disposed of as per HSE
norms.
5.4.3 Elastomer coating materials shall be uniform in composition and free from contaminations.
5.4.4 The metal bonding agent and the elastomer bonding agent shall be those recommended by the
polychloroprene rubber/EPDM manufacturers, or equivalent, as selected or developed for the environmental
conditions and application process considered in this International Standard.
5.4.5 The applied coating shall be resistant to oxidation, solar radiation, ozone, oil contamination and
marine organisms. It shall be suitable and stable under applicable service temperature range. It shall be
resistant to damage caused by twisting and flexing, exhibit outstanding physical toughness, resist degradation
from UV, ozone and marine weather conditions, and exhibit better fire retardant properties.
5.4.6 The applied coating shall be suitable for long-term use in offshore environments when immersed
continuously in sea water (under the influence of cathodic protection), in the splash zone or in the atmospheric
zone with moist conditions and salt laden air.
5.4.7 The applied coating shall be capable of preventing corrosion under the specified conditions. It shall
have good resistance to mechanical damage and exhibit strong adhesion to steel.
5.4.8 The applied coating material shall have physical properties in accordance with those listed in Annex
B. It shall be tested in accordance with 9.2. The applied coating shall have proven resistance to cathodic
disbondment in accordance with the parameters set in Annex B.
5.4.9 If the client requests antifouling treatments to the surface of the coated riser pipe work, the contractor
shall propose a compatible material required for antifouling, stating the application method and thickness of
any treatment for client's approval. In most cases the thickness of any treatment will be in addition to the
minimum thickness specified for the elastomer coating.
5.4.10 Elastomeric coating manufacturer shall confirm compatibility of antifouling paints.
ISO/DIS 18797-1
6 Bare pipes transportation, handling and storage
6.1 Transportation and handling of pipes
6.1.1 The contractor shall specify the proposed method for transportation, handling and storage of pipes for
the client's approval. These requirements shall be in accordance with the relative clauses under API RP 5LW
or API RP 5L1, unless otherwise specified.
6.1.2 All pipes shall be inspected at the time of loading and unloading. All damage to pipe existing at that
time shall be reported. Damaged pipe shall be marked and kept separately until repaired, after which it can be
coated.
6.1.3 The pipe shall be fitted with end caps to protect the pipe end bevels. These caps shall be maintained
by the applicator until the pipe is withdrawn from its custody. Damaged or lost end caps shall be replaced. The
applicator shall ensure that the pipes are returned to the contractor/client in the same condition as they were
received.
6.1.4 At all times, for the purpose of loading, unloading and handling of pipe, the contractor shall use
approved certified slings, spreader bars and protected pipe end hooks to the satisfaction of the client's lifting
equipment regulations/standards. All slings, hooks, supports and skids shall be padded and suitable to
prevent damage or deterioration of pipe and coating.
6.1.5 The contractor shall provide the client, prior to commencement of work, with all current load test
certificates for each and every crane, fork lift truck, overhead gantry and all other lifting appliances (like slings,
spreader bars, pipe hooks, etc.), in conjunction with all necessary procedures, to be used for the purposes of
the work. This shall include all standby equipment as well.
6.1.6 Internal surfaces of riser pipe sections shall be cleaned and inspected to ensure that they are free of
corrosion pitting. Internal surface severely corroded with pitting shall be rejected and replaced with new
sections.
6.2 Storage of pipes
6.2.1 Prior to commencement of works, the applicator shall provide the client with full details of his
proposed method of stock piling and storage areas for subsequent inspection and approval. The applicator
shall obtain written approval from the client of his procedures prior to handling pipes as a minimum. Pipes
should be stored in rows of width and spacing as per industry best practices.
6.2.2 Pipe identification shall be recorded upon receipt. Pipe identification shall be maintained by bonding
an identification tag on each pipe at all times. The tag shall be stamped with the pipe number, length and
intended riser location. To ensure better traceability of riser pipe sections, internal surfaces of pipe at ends
shall be marked for further verifications.
7 Surface preparation
7.1 General
7.1.1 End caps shall be carefully removed when preparing the pipe for surface preparation and shall be
retained for replacement when completing the coating process. Damaged or lost end caps during surface
preparation shall be replaced. Both external and internal surfaces of each pipe shall be cleaned to remove
non-adhesive mill scale/deposits.
7.1.2 The contractor shall submit a surface preparation procedure and details of equipment and materials
that will be used in the process for the client's approval.
ISO/DIS 18797-1
7.2 Pipe imperfections/damages removal
7.2.1 Before starting any surface preparation, pipes shall be inspected for general condition and the
presence of defects/damage should be referred to the client's representative to establish whether they can be
satisfactorily removed as an alternative to rejecting the pipe by the client.
7.2.2 All surface imperfections/defects that have arisen during fabrication and/or handling/transportation/
storage, such as weld spatter, slivers, dents, gouges, flattening, etc., shall be removed by suitable methods
approved by the client. The pipe surface to be coated shall be smooth, free of porosity, undercuts, cracks and
cavities.
7.2.3 The contractor shall provide suitable isolated storage space for the handling of all pipes requiring
repairs.
7.3 Contaminants removal
7.3.1 Prior to surface preparation, oil, grease and other contaminants shall be removed from the steel
surface by means of a water-soluble degreasing agent/detergent, ensuring that the emulsified mixture is
completely removed from the surface by washing or steam cleaning/ rinsing with fresh potable water. The
surface shall first dry before further surface preparation activities are carried out.
7.3.2 Heavy deposits of oil, grease and other fatty matter should initially be broken up, by appropriate
solvent using clean rags, before the above procedure is adopted. Solvent cleaning shall be in accordance with
SSPC-SP 1. Only solvents that do not leave any residues on the surface shall be used.
7.3.3 If degreaser chemicals are used to clean the riser pipe sections, no residue that can impair the
bonding of the coating system shall be left. Degreaser chemicals shall have clearance for usage from local
authorities governing or controlling pollution to specified standards.
7.4 Abrasive blast cleaning
7.4.1 Prior to blast cleaning, the pipe surface and ground area shall be checked for dryness. Dew point
readings shall be taken before, during and after blasting operations. Pipe surface temperature shall be at least
3 °C above dew point, relative humidity shall be in the range of 5 % to 85 %, and substrate temperature shall
be in the range of 10 °C to 50 ⁰C.
7.4.2 Uniform pre-heating of the steel pipes shall be carried out, if necessary, to maintain dry surface prior
to or during automatic abrasive blast cleaning, however heating shall be controlled to prevent softening of
plastic end caps. Pipe ends shall be plugged with end caps to prevent damage to the internal surface during
blasting.
7.4.3 The compressed air used in the cleaning method shall be free of water and oil. The air supply shall be
checked for water and oil contaminations in accordance with the procedure specified in ASTM D4285 prior to
blast cleaning and regularly throughout blast cleaning operations.
7.4.4 Blasting materials shall be clean, dry and suitably stored to maintain excellent conditions prior to use.
Expendable abrasives and those used for open blasting shall not be recycled. However, approved non-
expendable abrasives for use
...
INTERNATIONAL ISO
STANDARD 18797-1
First edition
2016-09-01
Petroleum, petrochemical and natural
gas industries — External corrosion
protection of risers by coatings and
linings —
Part 1:
Elastomeric coating systems-
polychloroprene or EPDM
Industries du pétrole, de la pétrochimie et du gaz naturel —
Protection de la corrosion externe des risers par revêtements et
doublures —
Partie 1: Systèmes de revêtement élastomère-polychloroprène ou EPDM
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
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CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 3
4 Abbreviated terms . 5
5 Pre-work requirements . 6
5.1 General . 6
5.2 Health, safety and environmental (HSE) . 6
5.3 Qualification of coating/lining application and inspection personnel . 6
6 Materials . 7
6.1 General requirements . 7
6.2 Material requirements. 8
6.3 Materials packing, handling and storage . 9
6.4 Coating materials . 9
7 Bare pipes transportation, handling and storage .10
7.1 Transportation and handling of pipes .10
7.2 Storage of pipes .10
8 Surface preparation .10
8.1 General .10
8.2 Pipe imperfections/damages removal .11
8.3 Contaminants removal .11
8.4 Abrasive blast cleaning .11
9 Coating application for risers .13
9.1 General .13
9.2 Priming and coating on abrasive blast-cleaned surface .13
9.3 Polychloroprene or EPDM application and vulcanization .14
9.4 Manual coating application on clamps, guides, bolt holes, inner sections of flanges
and pipe section used for modifications at worksites .15
9.5 Coating application of field joints .16
9.6 Coating repair .16
10 Inspection and testing .17
10.1 General .17
10.2 Testing of elastomer properties .17
10.2.1 General.17
10.2.2 Cure and hardness .17
10.2.3 Specific gravity.17
10.2.4 Rheological properties . .17
10.2.5 Tensile strength, tear strength and elongation at break .17
10.2.6 Compression set .18
10.2.7 Abrasion resistance .18
10.2.8 Ozone resistance .18
10.2.9 Adhesion .18
10.2.10 Resistance to seawater .18
10.2.11 Thermal conductivity . .18
10.2.12 Vulcanization characteristics (rotorless curemeters) .18
10.2.13 Cathodic disbondment .19
10.2.14 Volume resistivity .19
10.3 Inspection/testing of coated pipes .19
10.3.1 Visual inspection .19
10.3.2 Holiday detection .19
10.3.3 Thickness test .20
10.3.4 Adhesion (bond) test . .20
10.3.5 Hardness testing .20
10.3.6 Ultrasonic inspection .20
10.3.7 Sound testing .20
10.3.8 Rejection .20
10.4 Inspection and testing of field joint coating .21
10.5 Test reports and certificate of compliance .21
11 Coating damage/defect repair .21
11.1 Defect acceptance criteria .21
11.2 Repair procedures .21
12 Handling and stacking of coated pipes .22
13 Quality requirements .22
14 Documentation .23
Annex A (informative) Contents in a batch certificate .24
Annex B (normative) Physical properties of polychloroprene or EPDM elastomer .25
Annex C (normative) Riser pipe external coating progress chart .26
Bibliography .28
iv © ISO 2016 – All rights reserved
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries.
A list of all parts in the ISO 18797 series can be found on the ISO website.
Introduction
This document is based on GSO 2273. This document defines the minimum technical requirements
for the external corrosion protection of risers by coatings and linings based on elastomeric coating
systems-polychloroprene, EPDM or equivalent elastomeric coatings that are employed in the oil and
gas industry and provides technical guidance for developing local standards and specifications in
order to ensure compliance in coating and lining material selection and performance with contract
requirements.
Users of this document need to be aware that further or differing requirements can be needed for
individual applications. This document is not limiting the contractor and/or manufacturer from
proposing or company from accepting alternative engineering solutions for the individual application.
This can be particularly applicable where there is innovative or developing technology. Where an
alternative is proposed, the specification issuer needs to identify any deviations from this document
and provide details.
This document does not incorporate any form of passive fireproofing requirements or any related
compatibility issues. Any requirements with regards to passive fireproofing are to be addressed
separately.
vi © ISO 2016 – All rights reserved
INTERNATIONAL STANDARD ISO 18797-1:2016(E)
Petroleum, petrochemical and natural gas industries —
External corrosion protection of risers by coatings and
linings —
Part 1:
Elastomeric coating systems-polychloroprene or EPDM
1 Scope
This document specifies the minimum requirements for materials selection, surface preparation,
application, inspection, testing, qualification and acceptance criteria of external coating for steel risers
pipes used in the splash zone, their field joints and clamps/guides, using an elastomeric protective
coating based on polychloroprene, EPDM or equivalent. This is applicable for new construction and
repair of applied pipes before installation. Maintenance requirements and field repairs are covered in
ISO 18797-2.
This document also specifies the requirements for transportation, handling and storage of riser pipes
before and after surface preparation and coating application.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 34 (all parts), Rubber, vulcanized or thermoplastic — Determination of tear strength
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD and
100 IRHD)
ISO 813, Rubber, vulcanized or thermoplastic — Determination of adhesion to rigid substrate — 90 degree
peel method [alternative to ISO 814]
ISO 814, Rubber, vulcanized or thermoplastic — Determination of adhesion to metal — Two-plate method
[alternative to ISO 813]
ISO 815-1, Rubber, vulcanized or thermoplastic — Determination of compression set — Part 1: At ambient
or elevated temperatures
ISO 815-2, Rubber, vulcanized or thermoplastic — Determination of compression set — Part 2: At low
temperatures
ISO 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and
dynamic strain testing
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 2781, Rubber, vulcanized or thermoplastic — Determination of density
ISO 2812-2, Paints and varnishes — Determination of resistance to liquids — Part 2: Water immersion method
ISO 4649, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a rotating
cylindrical drum device
ISO 6502, Rubber — Guide to the use of curemeters
ISO 7619-1, Rubber, vulcanized or thermoplastic — Determination of indentation hardness — Part 1:
Durometer method (Shore hardness)
1)
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
ISO 8502-2, Preparation of steel substrates before application of paints and related products — Tests for
the assessment of surface cleanliness — Part 2: Laboratory determination of chloride on cleaned surfaces
ISO 8502-3, 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 8502-4, Preparation of steel substrates before application of paints and related products — Tests for the
assessment of surface cleanliness — Part 4: Guidance on the estimation of the probability of condensation
prior to paint application
ISO 8502-5, Preparation of steel substrates before application of paints and related products — Tests for
the assessment of surface cleanliness — Part 5: Measurement of chloride on steel surfaces prepared for
painting (ion detection tube method)
ISO 8502-6, Preparation of steel substrates before application of paints and related products — Tests for
the assessment of surface cleanliness — Part 6: Extraction of soluble contaminants for analysis — The
Bresle method
ISO 8502-9, Preparation of steel substrate 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 8503-2, 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
ISO 8503-4, Preparation of steel substrates before application of paints and related products — Surface
roughness characteristics of blast-cleaned steel substrates — Part 4: Method for the calibration of ISO
surface profile comparators and for the determination of surface profile — Stylus instrument procedure
[alternative to ISO 8503-5]
ISO 8503-5, Preparation of steel substrates before application of paints and related products — Surface
roughness characteristics of blast-cleaned steel substrates — Part 5: Replica tape method for the
determination of the surface profile [alternative to ISO 8503-4]
ISO 10474:2013, Steel and steel products — Inspection documents
ISO 11126 (all parts), Preparation of steel substrates before application of paints and related products —
Specifications for non-metallic blast-cleaning abrasives
ISO 21457, Petroleum, petrochemical and natural gas industries — Materials selection and corrosion
control for oil and gas production systems
ISO 21809-3, Petroleum and natural gas industries — External coatings for buried or submerged pipelines
used in pipeline transportation systems — Part 3: Field joint coatings
1) SSPC SP10 is equivalent to ISO 8501-1.
2 © ISO 2016 – All rights reserved
ISO 29601, Paints and varnishes — Corrosion protection by protective paint systems — Assessment of
porosity in a dry film [alternative to ASTM D5162]
EN 10204:2004, Metallic products — Types of inspection documents
EN 12664, Thermal performance of building materials and products — Determination of thermal resistance
by means of guarded hot plate and heat flow meter methods — Dry and moist products of medium and low
thermal resistance [alternative to ISO 29601]
EN 14879-4:2007, Organic coating systems and linings of protection of industrial apparatus and plants
against corrosion caused by aggressive media — Part 4: Linings on metallic components
API RP 5LW, Recommended Practice for Transportation of Line Pipe on Barges and Marine Vessels
[alternative to API RP 5L1]
API RP 5L1, Recommended Practice for Railroad Transportation of Line Pipe [alternative to API RP 5LW]
ASTM D2084, Standard Test Method for Rubber Property ― Vulcanization Using Oscillating Disc Cure Meter
ASTM D4285, Standard Test Method for Indicating Oil or Water in Compressed Air
ASTM D5162, Standard Practice for Discontinuity (Holiday) Testing of Nonconductive Protective Coating
on Metallic Substrates [alternative to ISO 29601]
ASTM D5894, Standard Practice for Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating Exposures
in a Fog/Dry Cabinet and a UV/Condensation Cabinet)
SSPC-AB 2, Cleanliness of Recycled Ferrous Metallic Abrasive
SSPC-PA 2, Procedure for Determining Conformance to Dry Coating Thickness Requirements
SSPC-SP 1, Solvent Cleaning
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
atmospheric zone
areas of offshore structures and riser pipes that extend upward from the splash zone (3.18) up to top
decks of the platform (3.12) which are exposed to sun, wind, sprays and rains
3.2
applicator
organization appointed by contractor (3.3)/client (3.4) to perform application of coatings/linings on
riser pipes as per project procedures prepared in accordance with this document
3.3
contractor
organization appointed by the client (3.4) to perform the works (3.21) in accordance with this document
3.4
client
organization for which professional services are rendered or person that receives a product
3.5
dew point
temperature at which moisture in air will condense out on to a solid surface, like blast-cleaned metal
surface or newly coated surfaces
3.6
dust
loose fine particulate matter present on a steel surface prepared for rubber lining, arising from blast
cleaning or other grinding activities or from worksite environments
3.7
elastomeric coatings
flexible skins, permanently bonded to risers (3.15) and structures
Note 1 to entry: Elastomeric coatings are designed and developed to withstand aggressive environment or
conditions affecting platform structures and risers in marine splash zones. These provide add on durability to
designed life to structures and risers in offshore environment, while providing resistance to seawater ingression,
ozone oxidation, erosion and abrasion.
3.8
ethylene propylene diene monomer
EPDM
elastomeric compound or synthetic rubber applied as a protective coating on riser pipes in splash
zones (3.18) to withstand erosion of riser pipe material caused by continuous exposure to seawater
and wave actions
Note 1 to entry: EPDM provides resistance to outdoor and high temperature services in the range of -35 °C to 120 °C.
3.9
flash rusting
slight rust formation on a freshly blast-cleaned carbon steel surfaces due to humidity in air and if not
painted within 4 h from start of blasting
3.10
holiday
discontinuity in a protective coating (cracks, pinholes, voids, etc.) that exhibits electrical conductivity
when exposed to specific voltage
Note 1 to entry: Holiday also means a small defect in the lining that would permit corrosion of substrate
under service conditions for which lining is designed. The term can be considered synonymous with cracks or
mechanical damages occurring in rubber lining, while in services.
3.11
manufacturer
organization responsible for the manufacture of coating material(s)
3.12
platform
offshore structure used to accommodate oil and gas wells related production equipment, pipelines and
living quarters
3.13
production batch
one loading capacity of the internal mixer used for preparing the mixed rubber prior to forming strip
of sheet
3.14
polychloroprene
light yellow synthetic rubber compound obtained by polymerization of chloroprene
Note 1 to entry: Polychloroprene is commonly known as polychloroprene compound.
4 © ISO 2016 – All rights reserved
Note 2 to entry: Polychloroprene is applied as a protective coating on riser pipes in splash zones (3.18) and below
to withstand erosion of riser pipe material caused by continuous exposure to seawater and wave actions. It
provides resistance to outdoor and services temperature in the range of −35 °C to 90 °C.
3.15
riser
section of pipeline carrying crude/gas between ocean floor and upper decks of platform (3.12) on
offshore structures
3.16
shore hardness
methods for determining the hardness of materials by means of durometer
3.17
site
lands and waters and other places on, under, in or through which the works (3.21) are to be carried
out and any other lands, waters or places provided by the client (3.4) for the purposes of the contract
together with any other places designated in the contract
3.18
splash zone
external surfaces of an offshore structure or pipeline that are, periodically wet and dry by the influence
of the astronomical tides, winds and waves, the limits are as defined by the contract specifications
3.19
surface profile
micro-roughness of surface generally expressed as an average of height of highest peaks relative to
lowest valleys sometime referred to as amplitude
3.20
vulcanization
curing of elastomeric materials by chemical reaction under heat and pressure to improve strength and
elasticity of applied rubber lining
3.21
works
activities to be executed in accordance with the contract, as defined in the specified conditions and
including both permanent and temporary activities
4 Abbreviated terms
µm micrometer (microns)
ASTM American Society for Testing and Materials
BS British Standard
DFT dry film thickness
HSE health, safety and environment
GSO Gulf Standardization Organization ITP
MS method statement
MSDS material safety data sheet
NACE National Association of Corrosion Engineers
NPS nominal pipe size
pphm parts per hundred million
PPT pre-production trial
PQT procedure qualification trial
QA/QC quality assurance/quality control
SSPC Society for Protective Coatings
5 Pre-work requirements
5.1 General
5.1.1 All requirements in this document and the referenced documents shall be followed, except if they
are modified or supplemented by project specification or datasheet.
5.1.2 The equipment, materials, consumables, spaces and stockpile areas that are necessary to carry
out surface preparation, coating application, qualification testing, inspection and QA/QC shall be in
accordance with this document and in a manner satisfactory to the client.
5.1.3 Surface preparation, priming, coating application, qualification testing/inspection and QA/QC
works shall be carried out in a continuous sequence as per this document and as recommended by the
manufacturers, unless otherwise specified by the client.
5.2 Health, safety and environmental (HSE)
5.2.1 All necessary health, safety and environmental (HSE) procedures shall be employed to protect
the personnel and the surrounding environment during on-site/field works. The contractors shall
submit their HSE manual for client’s approval. The approved HSE procedures for the safe coating/lining
processes shall be strictly followed.
5.2.2 All relevant international safety requirements, client’s safety regulations for contractors and
lifting equipment regulations shall be adhered, while performing coating and lining works.
5.2.3 Materials safety data sheets (MSDS) for all chemicals to be used within the client’s operation
areas shall be submitted to the client for review and approval. Health and safety precautions shall be
clearly described on each materials container/package.
5.2.4 All wastes resulting from supply, preparation and application shall be contained, collected
and properly disposed of in accordance with international/local environmental protection
standards/regulations.
5.3 Qualification of coating/lining application and inspection personnel
5.3.1 The coating/lining operatives shall be competent to undertake the coating application,
inspection/testing procedures and repair work. The qualification shall be obtained as agreed with the
client or by demonstration at a procedure qualification trial (PQT) during pre-production trial (PPT).
5.3.2 Inspectors and applicator personnel carrying out the coating inspection shall be competent
to carry out the requirements of this document. The applicator shall request the manufacturer of the
coating/lining material(s) and equipment to provide technical assistance to the coating/lining operatives
if necessary.
6 © ISO 2016 – All rights reserved
6 Materials
6.1 General requirements
6.1.1 The general requirements for the selection of materials for coating system and surface
preparation shall be in accordance with ISO 21457. Materials proposed for coating of the riser pipe
shall be tested by the product manufacturer and approved by the client before use. Non-conforming
materials shall be rejected and replaced with approved materials. Test certificates shall be provided for
all materials.
6.1.2 Identification of corrosion mechanism and parameter for evaluation when performing selection
of materials for pipelines, piping related to transport and processing of hydrocarbon production including
utility, injection system and wellheads shall be in accordance with ISO 21457.
NOTE ISO 21457 refers to materials that are generally available with properties that are known and
documented. It also allows other materials to be evaluated and qualified for use.
6.1.3 Materials shall be of high quality, uniform in composition and free from all inclusions and foreign
contaminants.
6.1.4 Materials shall not contain any asbestos/fibrous constituents, i.e. fibrous fillers or asbestos felt.
6.1.5 The contractor shall provide details of manufacturer, materials composition, technical
specification, physical properties, data sheets and test certificates for all materials, prior to use, for the
client’s review and approval. The client has the right to request a complete performance test for any
material used during the surface preparation and coating processes. The contractor and/or lining
applicator shall select polychloroprene or EPDM compound, which is suitable for company specified
characteristics and services and also select adhesive system, which will provide an adequate bond
between rubber and riser pipe surface to ascertain designed life of services in seawater splash zone.
Adhesive system shall depend upon the type of rubber compound and method of vulcanization.
6.1.6 The client shall at least provide the following characteristics of riser lines or pipe sections to be
coated with polychloroprene or EPDM rubber:
a) nominal diameter;
b) wall thickness;
c) type of pipe joint;
d) design temperature (max-min);
e) operating temperature (max-min);
f) design pressure, service – seawater splash zone;
g) chemical analysis of seawater and designed service life of coating while indicating special site
requirements.
6.1.7 Rubber compound and adhesive system shall be selected on the basis of previous project
references and industry experience to ascertain that it is suitable for specified services. If this requirement
could not be satisfied, appropriate testing shall be carried out as per manufacturer’s recommendations.
Where it is not possible to test sample elastomer lining in actual conditions, specified service conditions
shall be simulated accurately.
6.1.8 Polychloroprene and EPDM coating as described in this document comprise the following coats
or layers of coating materials:
a) 1st coat — primer coat that shall be compatible with the bonding agent and is bonded adequately to
the steel substrate;
b) 2nd coat — bonding agent that shall be compatible with both the primer and the elastomer coating;
c) 3rd coat — tack cement rubber solution (rubber compound solution), if deemed necessary;
d) 4th coat — elastomeric coating material (polychloroprene or EPDM).
6.1.9 Elastomer compound and adhesive manufacturing facility and in-house testing laboratory shall
be in compliance with the quality management system requirements.
6.1.10 The materials shall be compatible with each other to provide adequate bonding when vulcanized
to enhance inbuilt chemical and physical properties as desired for corrosion protection of riser pipes in
the splash zone.
6.1.11 Nylon tape to be wrapped temporarily over the elastomer coated pipe shall be of sufficient
strength to withstand tension and secure coating tightly adherent to substrate. It shall also withstand
autoclave temperatures during the vulcanization process.
6.1.12 The contractor/applicator shall provide the following to the client for review and approvals, well
before entering into actual application of elastomer coating on specified surfaces:
a) name and number of elastomer compound;
b) test panels coated with proposed elastomer compound and vulcanized as a reference sample;
c) test certificate by in-house laboratory as well as client’s designated external laboratory certifying
qualification of polychloroprene and/or EPDM, meeting desired chemical and physical properties
along with satisfaction of special considerations, if any.
6.1.13 Clearance for usage shall be obtained for coating materials to be used on riser pipes in seawater
splash zone from local and international environment authorities governing or controlling marine
pollution to specified norms.
6.1.14 On client’s approval of selected elastomeric coating/lining, the applicator shall assess site
requirements, prepare method statement (MS), inspection test plan (ITP) and quality assurance/quality
control documentations and submit to the client for approval.
6.1.15 After approval of documents (as in 6.1.14), the applicator shall arrange for procedure qualification
trial (PQT), demonstrating coating work to be carried out on automatic pipe coating machine and also by
hand lay methods, while producing a test sample (as required in 6.1.12). The PQT shall be witnessed by
the contractor, client and coating material manufacturer for approvals.
6.2 Material requirements
6.2.1 Polychloroprene elastomer coatings for risers shall be suitable for use in seawater, ambient air
temperatures down to −35 °C and service temperatures of maximum +90 °C for the specified design life.
6.2.2 Ethylene propylene diene monomer (EPDM) elastomer coatings for risers shall be suitable
for use in seawater, ambient air temperatures down to −35 °C and service temperatures of maximum
+120 °C for the specified design life.
8 © ISO 2016 – All rights reserved
6.2.3 Other equivalent products shall comply with the material requirements specified within this
document.
6.3 Materials packing, handling and storage
6.3.1 All materials shall be supplied in the manufacturer’s original packaging in an undamaged
condition to the plant/coating yard, clearly marked with the batch code, storage conditions, date
of manufacture, shelf life and accompanied with the relevant batch certificate. The content of a batch
certificate for different coating materials are shown in Annex A for reference.
6.3.2 All materials taken to worksite shall be stored in covered, cool, dry, well-ventilated areas and
shall be kept clean, dry and free from any contaminants prior to and during application in addition to the
manufacturer’s recommendations. Any material that has been affected by the climate or contaminated in
any way shall be rejected and replaced with approved materials.
6.4 Coating materials
6.4.1 All coating materials, in any one system, should originate from one client’s approved manufacturer
with his assurance that they are fully compatible with one another.
6.4.2 Bulk of coating materials shall be stored in air conditioned store rooms at temperature and under
conditions as specified by material manufacturer as it should not be affected by climate or other factors.
Coating materials found in unusable conditions shall be replaced by new stocks. Materials shall be used
on first-in-first-out basis stock rotations. Expired material shall be quarantined and then disposed of as
per HSE norms.
6.4.3 Elastomer coating materials shall be uniform in composition and free from contaminations.
6.4.4 The metal bonding agent and the elastomer bonding agent shall be those recommended by
the polychloroprene rubber/EPDM manufacturers, or equivalent, as selected or developed for the
environmental conditions and application process considered in this document.
6.4.5 The applied coating shall be resistant to oxidation, solar radiation, ozone, oil contamination and
marine organisms. It shall be suitable and stable under applicable service temperature range. It shall
be resistant to damage caused by twisting and flexing, exhibit outstanding physical toughness, resist
degradation from UV, ozone and marine weather conditions and exhibit better fire retardant properties.
6.4.6 The applied coating shall be suitable for long-term use in offshore environments when immersed
continuously in seawater (under the influence of cathodic protection), in the splash zone or in the
atmospheric zone with moist conditions and salt laden air.
6.4.7 The applied coating shall be capable of preventing corrosion under the specified conditions. It
shall have good resistance to mechanical damage and exhibit strong adhesion to steel.
6.4.8 The applied coating material shall have physical properties in accordance with those listed in
Annex B. It shall be tested in accordance with 10.2. The applied coating shall have proven resistance to
cathodic disbondment in accordance with the parameters set in Annex B.
6.4.9 If the client requests antifouling treatments to the surface of the coated riser pipe work, the
contractor shall propose a compatible material required for antifouling, stating the application method
and thickness of any treatment for client’s approval. In most cases, the thickness of any treatment will be
in addition to the minimum thickness specified for the elastomer coating.
6.4.10 Elastomeric coating manufacturer shall confirm compatibility of antifouling paints.
7 Bare pipes transportation, handling and storage
7.1 Transportation and handling of pipes
7.1.1 The contractor shall specify the proposed method for transportation, handling and storage of
pipes for the client’s approval. These requirements shall be in accordance with the relative clauses under
API RP 5LW or API RP 5L1, unless otherwise specified.
7.1.2 All pipes shall be inspected at the time of loading and unloading. All damage to pipe existing
at that time shall be reported. Damaged pipe shall be marked and kept separately until repaired, after
which it can be coated.
7.1.3 The pipe shall be fitted with end caps to protect the pipe end bevels. These caps shall be
maintained by the applicator until the pipe is withdrawn from its custody. Damaged or lost end caps shall
be replaced. The applicator shall ensure that the pipes are returned to the contractor/client in the same
condition as they were received.
7.1.4 At all times, for the purpose of loading, unloading and handling of pipe, the contractor shall use
approved certified slings, spreader bars and protected pipe end hooks to the satisfaction of the client’s
lifting equipment regulations/standards. All slings, hooks, supports and skids shall be padded and
suitable to prevent damage or deterioration of pipe and coating.
7.1.5 The contractor shall pr
...
NORME ISO
INTERNATIONALE 18797-1
Première édition
2016-09-01
Industries du pétrole, de la
pétrochimie et du gaz naturel —
Protection de la corrosion externe des
risers par revêtements et doublures —
Partie 1:
Systèmes de revêtement élastomère-
polychloroprène ou EPDM
Petroleum, petrochemical and natural gas industries — External
corrosion protection of risers by coatings and linings —
Part 1: Elastomeric coating systems-polychloroprene or EPDM
Numéro de référence
©
ISO 2016
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2016, Publié en Suisse
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
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Tel. +41 22 749 01 11
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copyright@iso.org
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ii © ISO 2016 – Tous droits réservés
Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 3
4 Abréviations . 6
5 Exigences préalables aux travaux . 6
5.1 Généralités . 6
5.2 Santé, sécurité et environnement (HSE) . 6
5.3 Qualification du personnel chargé de l’application du revêtement/lining et des contrôles 7
6 Matériaux . 7
6.1 Exigences générales . 7
6.2 Exigences relatives aux matériaux . 9
6.3 Conditionnement, manutention et stockage des matériaux . 9
6.4 Matériaux de revêtement . 9
7 Transport, manutention et stockage des tuyaux nus .10
7.1 Transport et manutention des tuyaux .10
7.2 Stockage des tuyaux .11
8 Préparation de surface .11
8.1 Généralités .11
8.2 Élimination des imperfections/dommages des tuyaux .11
8.3 Élimination de contaminants .12
8.4 Décapage par projection d’abrasif .12
9 Application du revêtement pour risers .14
9.1 Généralités .14
9.2 Application de primaire et revêtement sur la surface décapée par projection d’abrasif .15
9.3 Application et vulcanisation de polychloroprène ou EPDM .15
9.4 Application manuelle du revêtement sur colliers, guides, trous de fixation, sections
internes des brides et de la section de tuyau pour modifications sur les sites de travail .16
9.5 Application de revêtement de joints soudés sur site .17
9.6 Réparation de revêtement .18
10 Contrôles et essais .18
10.1 Généralités .18
10.2 Essais portant sur les propriétés des élastomères .19
10.2.1 Généralités .19
10.2.2 Polymérisation et dureté .19
10.2.3 Gravité spécifique . .19
10.2.4 Propriétés rhéologiques .19
10.2.5 Résistance à la traction, résistance au déchirement et allongement à la rupture 19
10.2.6 Déformation rémanente après compression .19
10.2.7 Résistance à l’abrasion.20
10.2.8 Résistance à l’ozone .20
10.2.9 Adhérence .20
10.2.10 Résistance à l’eau de mer .20
10.2.11 Conductivité thermique .20
10.2.12 Caractéristiques de vulcanisation (rhéomètres sans rotor) .20
10.2.13 Décollement cathodique .21
10.2.14 Résistivité transversale .21
10.3 Contrôle/Essai des tuyaux revêtus .21
10.3.1 Examen visuel.21
10.3.2 Détection des manques .21
10.3.3 Essai d’épaisseur . .21
10.3.4 Essai d’adhérence . .22
10.3.5 Essais de dureté .22
10.3.6 Contrôle par ultrasons .22
10.3.7 Essais acoustiques .22
10.3.8 Refus .23
10.4 Contrôle et essais du revêtement des joints soudés sur site .23
10.5 Comptes rendus d’essais et certificat de conformité .23
11 Réparation de dommage/défaut de revêtement .23
11.1 Critères d’acceptation de défaut .23
11.2 Procédures de réparation .23
12 Manutention et empilage de tuyaux revêtus .24
13 Exigences de qualité .24
14 Documentation .25
Annexe A (informative) Contenu d’un certificat de lot .26
Annexe B (normative) Propriétés physiques de l’élastomère polychloroprène ou EPDM .27
Annexe C (normative) Tableau d’avancement du revêtement externe des tuyaux de riser .29
Bibliographie .31
iv © ISO 2016 – Tous droits réservés
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www.
iso.org/directives).
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de
droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l’élaboration du document sont indiqués dans l’Introduction et/ou dans la liste des déclarations de
brevets reçues par l’ISO (voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la signification des termes et expressions spécifiques de l’ISO liés à l’évaluation
de la conformité, ou pour toute information au sujet de l’adhésion de l’ISO aux principes de l’OMC
concernant les obstacles techniques au commerce (OTC), voir le lien suivant: www.iso.org/iso/
foreword.html.
Le comité chargé de l’élaboration du présent document est l’ISO/TC 67, Matériels, équipements et
constructions en mer pour les industries du pétrole, de la pétrochimie et du gaz naturel.
Une liste de toutes les parties de la série ISO 18797 peut être consultée sur le site Web de l’ISO.
Introduction
Le présent document est basé sur le GSO 2273. Le présent document définit les exigences techniques
minimales applicables à la protection contre la corrosion externe des risers par revêtements et
linings basée sur les systèmes de revêtement en élastomère-polychloroprène, EPDM ou revêtements
en élastomère équivalents employés dans l’industrie du pétrole et du gaz naturel, et fournit des
préconisations techniques pour l’élaboration de normes et spécifications locales afin de garantir la
conformité de la sélection et des performances des matériaux de revêtement et de lining aux exigences
contractuelles.
Les utilisateurs du présent document doivent avoir conscience que des exigences supplémentaires ou
différentes peuvent être nécessaires à des applications particulières. Le présent document n’interdit
pas à l’entrepreneur et/ou au fabricant de proposer des solutions techniques alternatives pour
l’application considérée, ni à l’entreprise de les accepter. Cela peut notamment s’appliquer en présence
de technologies innovantes ou en développement. Si une alternative est proposée, l’émetteur de la
spécification doit identifier tout écart par rapport au présent document et fournir des détails.
Le présent document ne comprend aucun type d’exigence d’ignifugeage passif or autres problèmes de
compatibilité associés. Toute exigence concernant l’ignifugeage passif est à traiter séparément.
vi © ISO 2016 – Tous droits réservés
NORME INTERNATIONALE ISO 18797-1:2016(F)
Industries du pétrole, de la pétrochimie et du gaz
naturel — Protection de la corrosion externe des risers par
revêtements et doublures —
Partie 1:
Systèmes de revêtement élastomère-polychloroprène ou
EPDM
1 Domaine d’application
Le présent document spécifie les exigences minimales applicables à la sélection des matériaux, à
la préparation de surface, à l’application, à l’inspection, aux essais, à la qualification et aux critères
d’acceptation de revêtement externe pour tuyaux de risers en acier utilisés dans la zone d’action des
vagues, leurs joints soudés sur site et colliers/guides, au moyen d’un revêtement de protection en
élastomère à base de polychloroprène, EPDM ou équivalent. Cela concerne les nouvelles constructions et
les réparations de tuyaux appliqués avant installation. Les exigences de maintenance et les réparations
sur site sont traitées dans l’ISO 18797-2.
Le présent document spécifie également les exigences de transport, de manutention et de stockage des
tuyaux de risers avant et après la préparation de surface et l’application du revêtement.
2 Références normatives
Les documents suivants cités dans le texte constituent, pour tout ou partie de leur contenu, des
exigences du présent document. Pour les références datées, seule l’édition citée s’applique. Pour les
références non datées, la dernière édition du document de référence s’applique (y compris les éventuels
amendements).
ISO 34 (toutes les parties), Caoutchouc vulcanisé ou thermoplastique — Détermination de la résistance au
déchirement
ISO 37, Caoutchouc vulcanisé ou thermoplastique — Détermination des caractéristiques de contrainte-
déformation en traction
ISO 48, Caoutchouc vulcanisé ou thermoplastique — Détermination de la dureté (dureté comprise entre
10 DIDC et 100 DIDC)
ISO 813, Caoutchouc vulcanisé ou thermoplastique — Détermination de l’adhérence à un substrat rigide —
Méthode par pelage à angle droit
ISO 814, Caoutchouc vulcanisé ou thermoplastique — Détermination de l’adhérence au métal — Méthode à
deux plaques [variante de la norme ISO 813]
ISO 815-1, Caoutchouc vulcanisé ou thermoplastique — Détermination de la déformation rémanente après
compression — Partie 1: À températures ambiantes ou élevées
ISO 815-2, Caoutchouc vulcanisé ou thermoplastique — Détermination de la déformation rémanente après
compression — Partie 2: À basses températures
ISO 1431-1, Caoutchouc vulcanisé ou thermoplastique — Résistance au craquelage par l’ozone — Partie 1:
Essais sous allongement statique et dynamique
ISO 1817, Caoutchouc vulcanisé ou thermoplastique — Détermination de l’action des liquides
ISO 2781, Caoutchouc vulcanisé ou thermoplastique — Détermination de la masse volumique
ISO 2812-2, Peintures et vernis — Détermination de la résistance aux liquides — Partie 2: Méthode par
immersion dans l’eau
ISO 4649, Caoutchouc vulcanisé ou thermoplastique — Détermination de la résistance à l’abrasion à l’aide
d’un dispositif à tambour tournant
ISO 6502, Caoutchouc — Guide pour l’emploi des rhéomètres
ISO 7619-1, Caoutchouc vulcanisé ou thermoplastique — Détermination de la dureté par pénétration —
Partie 1: Méthode au duromètre (dureté Shore)
1)
ISO 8501-1:2007 , Préparation des subjectiles d’acier avant application de peintures et de produits
assimilés — Évaluation visuelle de la propreté d’un subjectile — Partie 1: Degrés de rouille et degrés de
préparation des subjectiles d’acier non recouverts et des subjectiles d’acier après décapage sur toute la
surface des revêtements précédents
ISO 8502-2, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Essais pour apprécier la propreté d’une surface — Partie 2: Recherche en laboratoire des chlorures sur les
surfaces nettoyées
ISO 8502-3, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Essais pour apprécier la propreté d’une surface — Partie 3: Évaluation de la poussière sur les surfaces
d’acier préparées pour la mise en peinture (méthode du ruban adhésif sensible à la pression)
ISO 8502-4, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Essais pour apprécier la propreté d’une surface — Partie 4: Principes directeurs pour l’estimation de la
probabilité de condensation avant application de peinture
ISO 8502-5, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Essais pour apprécier la propreté d’une surface — Partie 5: Mesurage des chlorures sur les surfaces d’acier
préparées pour la mise en peinture (méthode du tube détecteur d’ions)
ISO 8502-6, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Essais pour apprécier la propreté d’une surface — Partie 6: Extraction des contaminants solubles en vue de
l’analyse — Méthode de Bresle
ISO 8502-9, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Essais pour apprécier la propreté d’une surface — Partie 9: Méthode in situ pour la détermination des sels
solubles dans l’eau par conductimétrie
ISO 8503-2, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Caractéristiques de rugosité des subjectiles d’acier décapés — Partie 2: Méthode de classification d’un profil
de surface en acier décapée par projection d’abrasif — Utilisation des comparateurs viso-tactiles
ISO 8503-4, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Caractéristiques de rugosité des subjectiles d’acier décapés — Partie 4: Méthode d’étalonnage des
comparateurs viso-tactiles ISO et de classification d’un profil de surface — Utilisation d’un appareil à palpeur
ISO 8503-5, Préparation des subjectiles d’acier avant application de peintures et de produits assimilés —
Caractéristiques de rugosité des subjectiles d’acier décapés — Partie 5: Méthode de l’empreinte sur ruban
adhésif pour la détermination du profil de surface
ISO 10474:2013, Aciers et produits sidérurgiques — Documents de contrôle
ISO 11126 (toutes les parties), Préparation des subjectiles d’acier avant application de peintures et de
produits assimilés — Spécifications pour abrasifs non métalliques destinés à la préparation par projection
1) La norme SSPC SP10 est l’équivalent de l’ISO 8501-1.
2 © ISO 2016 – Tous droits réservés
ISO 21457, Industries du pétrole, de la pétrochimie et du gaz naturel — Choix des matériaux et contrôle de
la corrosion pour les systèmes de production de pétrole et de gaz
ISO 21809-3, Industries du pétrole et du gaz naturel — Revêtements externes des conduites enterrées ou
immergées utilisées dans les systèmes de transport par conduites — Partie 3: Revêtements des joints soudés
sur site
ISO 29601, Peintures et vernis — Anticorrosion par systèmes de peinture — Évaluation de la porosité d’un
feuil sec
EN 10204:2004, Produits métalliques — Types de documents de contrôle
EN 12664, Performance thermique des matériaux et produits pour le bâtiment — Détermination de la
résistance thermique par la méthode de la plaque chaude gardée et la méthode fluxmétrique — Produits
secs et humides de moyenne et basse résistance thermique [variante de la norme ISO 29601]
EN 14879-4:2007, Systèmes des revêtements organiques de peinture et autres revêtements rapportés
pour la protection des appareils et installations industriels contre la corrosion par des milieux agressifs —
Partie 4: Revêtements rapportés sur composants métalliques
API RP 5LW, Recommended Practice for Transportation of Line Pipe on Barges and Marine Vessels [variante
de la norme API RP 5L1]
API RP 5L1, Recommended Practice for Railroad Transportation of Line Pipe [variante de la norme
API RP 5LW]
ASTM D2084, Standard Test Method for Rubber Property ― Vulcanization Using Oscillating Disc Cure Meter
ASTM D4285, Standard Test Method for Indicating Oil or Water in Compressed Air
ASTM D5162, Standard Practice for Discontinuity (Holiday) Testing of Nonconductive Protective Coating
on Metallic Substrates [alternative to ISO 29601]
ASTM D5894, Standard Practice for Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating Exposures
in a Fog/Dry Cabinet and a UV/Condensation Cabinet)
SSPC-AB 2, Cleanliness of Recycled Ferrous Metallic Abrasive
SSPC-PA 2, Procedure for Determining Conformance to Dry Coating Thickness Requirements
SSPC-SP 1, Solvent Cleaning
3 Termes et définitions
Pour les besoins du présent document, les termes et définitions suivants s’appliquent.
L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en
normalisation, consultables aux adresses suivantes:
— ISO Online browsing platform: disponible à l’adresse http://www.iso.org/obp
— IEC Electropedia: disponible à l’adresse http://www.electropedia.org/
3.1
zone atmosphérique
parties des structures en mer et des tuyaux de risers qui s’élèvent au-dessus de la zone d’action des
vagues (3.18) jusqu’aux ponts supérieurs de la plate-forme (3.12) et qui sont exposées au soleil, au vent,
aux embruns et à la pluie
3.2
applicateur
organisme désigné par l’entrepreneur (3.3)/client (3.4) pour effectuer l’application des
revêtements/linings sur les tuyaux de riser suivant les procédures de projet préparées conformément
au présent document
3.3
entrepreneur
organisme désigné par le client (3.4) pour réaliser les travaux (3.21) conformément au présent document
3.4
client
organisme pour lequel des services professionnels sont rendus ou personne qui reçoit un produit
3.5
point de rosée
température à laquelle l’humidité dans l’air se condense sur une surface solide, telle qu’une surface
métallique décapée par projection ou des surfaces récemment revêtues
3.6
poussière
fines particules sans cohésion présentes sur une surface d’acier préparée pour recevoir un lining
en caoutchouc, générées par le décapage par projection ou autres activités de broyage, ou par les
environnements de sites de travail
3.7
revêtements en élastomère
peaux flexibles, fixées de manière permanente aux risers (3.15) et aux structures
Note 1 à l’article: Les revêtements en élastomère sont conçus et développés pour résister à un environnement
agressif ou à des conditions préjudiciables aux structures de plate-forme et aux risers dans les zones d’action des
vagues. Ils offrent une durabilité supplémentaire de la durée de vie de conception des structures et risers dans
un environnement marin, tout en assurant une résistance à la pénétration par l’eau de mer, l’oxydation à l’ozone,
l’érosion et l’abrasion.
3.8
éthylène-propylène-diène monomère
EPDM
composé d’élastomère ou caoutchouc synthétique appliqué comme revêtement de protection sur les
tuyaux de riser dans les zones d’action des vagues (3.18) afin de résister à l’érosion du matériau des
tuyaux de riser causée par l’exposition continue à l’eau de mer et aux actions des vagues
Note 1 à l’article: L’EPDM assure la résistance en service à l’extérieur et à haute température dans une plage de
−35 °C à 120 °C.
3.9
oxydation rapide
légère formation de rouille sur surfaces d’acier au carbone récemment décapées par projection due à
l’humidité dans l’air, si elles n’ont pas été peintes dans les 4 heures suivant le début du décapage
3.10
manque
discontinuité dans un revêtement de protection (fissures, piqûres, interstices, etc.) qui présente une
conductivité électrique lorsqu’elle est exposée à une tension spécifique
Note 1 à l’article: Un manque signifie également un petit défaut dans le lining qui pourrait permettre la corrosion
du substrat dans les conditions de service pour lesquelles le lining est conçu. Ce terme peut être considéré comme
étant un synonyme de fissures ou détériorations mécaniques qui apparaissent dans le lining de caoutchouc en
service.
4 © ISO 2016 – Tous droits réservés
3.11
fabricant
organisme chargé de la fabrication du ou des matériau(x) du revêtement
3.12
plate-forme
structure en mer utilisée pour intégrer les équipements de production associés aux puits de gaz et de
pétrole, les conduites et les quartiers d’habitation
3.13
lot de production
une capacité de chargement du mélangeur interne servant à préparer le mélange de caoutchouc avant
de former une bande de feuille
3.14
polychloroprène
composé de caoutchouc synthétique jaune pâle obtenu par polymérisation du chloroprène
Note 1 à l’article: Le polychloroprène est couramment appelé composé de polychloroprène.
Note 2 à l’article: Le polychloroprène est appliqué comme revêtement de protection sur les tuyaux de riser dans
les zones d’action des vagues (3.18) et en dessous de celles-ci afin de résister à l’érosion du matériau des tuyaux
de riser causée par l’exposition continue à l’eau de mer et aux actions des vagues. Il assure la résistance à la
température extérieure et en service dans une plage de −35 °C à 90 °C.
3.15
riser
section de conduite transportant le pétrole/gaz brut entre le fond océanique et les ponts supérieurs de
la plate-forme (3.12) sur les structures en mer
3.16
dureté Shore
méthodes permettant de déterminer la dureté des matériaux au moyen d’un duromètre
3.17
site
terres émergées et eaux et autres endroits sur, sous, dans ou à travers lesquels les travaux (3.21) doivent
être réalisés, et autres terres émergées, eaux ou endroits mis à disposition par le client (3.4) pour les
besoins du contrat, ainsi que tout autre endroit désigné dans le contrat
3.18
zone d’action des vagues
surfaces extérieures d’une structure en mer ou d’une conduite qui sont périodiquement humides et
sèches en raison de l’influence des marées astronomiques, des vents et des vagues, dont les limites sont
définies par les spécifications contractuelles
3.19
profil de surface
microrugosité d’une surface, généralement exprimée par la hauteur moyenne des plus hautes crêtes par
rapport aux creux les plus profonds, parfois appelé amplitude
3.20
vulcanisation
polymérisation de matériaux élastomères par réaction chimique sous l’action de la chaleur et de la
pression, destinée à améliorer la résistance et l’élasticité du lining de caoutchouc appliqué
3.21
travaux
activités à réaliser conformément au contrat, telles que définies dans les conditions spécifiées, et
comprenant à la fois les activités permanentes et temporaires
4 Abréviations
µm micromètre (microns)
ASTM American Society for Testing et Materials
BS Norme britannique (British Standard)
DFT épaisseur de feuil sec (dry film thickness)
HSE santé, sécurité et environnement (health, safety et environment)
GSO Organization de normalization du Golfe (Gulf Standardization Organization ITP)
MS exposé de méthode (method statement)
MSDS fiche technique de sécurité des matériaux
NACE Association nationale des ingénieurs en corrosion (National Association of Corrosion
Engineers)
NPS taille nominale de tuyau (nominal pipe size)
pphm partie pour cent millions
PPT essai de préproduction (pre-production trial)
PQT épreuve de qualification du mode opératoire (procedure qualification trial)
AQ/CQ assurance qualité/contrôle qualité
SSPC Société des revêtements de protection (Society for Protective Coatings)
5 Exigences préalables aux travaux
5.1 Généralités
5.1.1 Toutes les exigences du présent document et des documents référencés doivent être suivies, à
moins d’être modifiées ou complétées par la spécification du projet ou la fiche de données.
5.1.2 Les équipements, matériaux, consommables, espaces et zones d’amoncellement nécessaires à la
réalisation de la préparation de surface, à l’application d’un revêtement, aux essais de qualification, au
contrôle et à l’AQ/CQ doivent être conformes au document et de nature à satisfaire le client.
5.1.3 La préparation de surface, l’application du primaire, l’application du revêtement, les essais
et contrôles de qualification et les travaux d’AQ/CQ doivent être effectués suivant un ordre continu
conformément au présent document et aux recommandations des fabricants, sauf spécification contraire
du client.
5.2 Santé, sécurité et environnement (HSE)
5.2.1 Toutes les procédures de santé, sécurité et environnement (HSE) nécessaires doivent être
employées en vue de protéger le personnel et l’environnement immédiat durant les travaux sur
le site/terrain. L’entrepreneur doit soumettre son manuel HSE au client pour approbation. Les
procédures HSE approuvées pour des processus de revêtement/lining sûrs doivent être strictement
respectées.
6 © ISO 2016 – Tous droits réservés
5.2.2 Toutes les exigences internationales pertinentes en matière de sécurité, toutes les règlementations
de sécurité du client destinées aux entrepreneurs et les règlementations relatives aux équipements de
levage doivent être respectées durant la réalisation de travaux de revêtement et de lining.
5.2.3 Les fiches techniques relatives à la sécurité des matériaux (MSDS) pour tous les produits
chimiques à utiliser dans les zones d’opération du client doivent être soumises au client pour examen
et approbation. Les précautions en matière de santé et de sécurité doivent être clairement indiquées sur
chaque conteneur/emballage de matériaux.
5.2.4 Tous les déchets résultant de la fourniture, de la préparation et de l’application doivent
être contenus, recueillis et éliminés correctement conformément aux normes/règlementations
internationales/locales de protection de l’environnement.
5.3 Qualification du personnel chargé de l’application du revêtement/lining et des
contrôles
5.3.1 Les applicateurs de revêtements/linings doivent posséder les compétences nécessaires pour
effectuer les travaux d’application du revêtement, mettre en œuvre les procédures de contrôle/d’essai
et effectuer les travaux de réparation. La qualification doit être obtenue comme convenu avec le client ou
par démonstration dans le cadre d’une épreuve de qualification du mode opératoire (PQT) lors de l’essai
de préproduction (PPT).
5.3.2 Les contrôleurs et le personnel de l’applicateur effectuant le contrôle du revêtement doivent
posséder les compétences requises pour mettre en œuvre les exigences du présent document.
L’applicateur doit demander au fabricant des équipements et du(des) produit(s) de revêtement/lining
de fournir une aide technique aux applicateurs de revêtements/linings, si nécessaire.
6 Matériaux
6.1 Exigences générales
6.1.1 Les exigences générales de sélection des matériaux pour le système de revêtement et la
préparation de surface doivent être conformes à l’ISO 21457. Les matériaux proposés pour le revêtement
du tuyau de riser doivent être soumis à essais par le fabricant du produit et approuvés par le client avant
utilisation. Les matériaux non conformes doivent être refusés et remplacés par des matériaux approuvés.
Des certificats d’essai doivent être fournis pour tous les matériaux.
6.1.2 L’identification du mécanisme de corrosion et le paramètre d’évaluation lors de la sélection
des matériaux pour les conduites, les tuyauteries liées au transport et au traitement de la production
d’hydrocarbures, y compris l’installation, le système d’injection et les têtes de puits, doivent être
conformes à l’ISO 21457.
NOTE L’ISO 21457 fait référence à des matériaux qui sont généralement disponibles et qui ont des propriétés
connues et documentées. Elle permet également à d’autres matériaux d’être évalués et qualifiés pour utilisation.
6.1.3 Les matériaux doivent être de bonne qualité, d’une composition uniforme, et exempts de toute
inclusion et de tout contaminant étranger.
6.1.4 Les matériaux ne doivent pas contenir d’amiante/de composants fibreux, c’est-à-dire de charges
fibreuses ou de feutre d’amiante.
6.1.5 L’entrepreneur doit fournir les coordonnées du fabricant, la composition des matériaux, la
Spécification technique, les propriétés physiques, les fiches de données et les certificats d’essai pour tous
les matériaux, avant utilisation, pour examen et approbation par le client. Le client a le droit de demander
un essai de performance complet pour tout matériau utilisé au cours des processus de préparation de
surface et de revêtement. L’entrepreneur et/ou l’applicateur du revêtement doivent choisir un composé
de polychloroprène ou d’EPDM adapté aux caractéristiques et services spécifiés par la société, ainsi qu’un
système d’adhésif, qui assurera une bonne adhérence entre le caoutchouc et la surface du tuyau de riser
afin de garantir la durée de vie de conception en service dans la zone d’action des vagues d’eau de mer. Le
système d’adhésif doit dépendre du type de composé de caoutchouc et de la méthode de vulcanisation.
6.1.6 Le client doit fournir au moins les caractéristiques suivantes de sections de canalisation ou de
tuyau de riser à revêtir avec le polychloroprène ou le caoutchouc EPDM:
a) diamètre nominal;
b) épaisseur de paroi;
c) type de joint de tuyau;
d) température de calcul (max.-min.);
d) température d’exploitation (max.-min.);
f) pression de calcul, service – zone d’action des vagues d’eau de mer;
g) analyse chimique de l’eau de mer et durée de vie de conception en service du revêtement en
indiquant les exigences spéciales du site.
6.1.7 Le composé de caoutchouc et le système d’adhésif doivent être choisis d’après les références de
projet précédentes et l’expérience du secteur afin de s’assurer qu’ils sont adaptés aux services spécifiés.
Si cette exigence n’a pas pu être satisfaite, des essais appropriés doivent être effectués suivant les
recommandations du fabricant. Lorsque l’essai d’un échantillon de lining en élastomère en conditions
réelles n’est pas possible, des conditions de service spécifiées doivent être simulées avec exactitude.
6.1.8 Le revêtement en polychloroprène et en EPDM décrit dans le présent document comprend les
couches ou pellicules suivantes de matériaux de revêtement:
re
a) 1 couche — couche primaire qui doit être compatible avec le liant et être suffisamment liée au
substrat en acier;
b) 2ème couche — liant qui doit être compatible avec le primaire et le revêtement en élastomère;
c) 3ème couche — solution caoutchouc-ciment d’accrochage (solution de composé de caoutchouc), si
cela est jugé nécessaire;
d) 4ème couche — matériau de revêtement élastomère (polychloroprène ou EPDM).
6.1.9 L’installation de fabrication du composé d’élastomère et de l’adhésif et le laboratoire d’essai
interne doivent être conformes aux exigences du système de management de la qualité.
6.1.10 Les matériaux doivent être compatibles entre eux pour assurer un collage adéquat à l’état
vulcanisé afin renforcer les propriétés chimiques et physiques inhérentes comme requis pour la
protection contre la corrosion des tuyaux de riser dans la zone d’action des vagues.
6.1.11 Le ruban de nylon à enrouler temporairement sur le tuyau revêtu d’élastomère doit avoir
une force suffisante pour supporter la tension et fixer le revêtement pour qu’il adhère étroitement au
substrat. Il doit également résister aux températures en autoclave durant le processus de vulcanisation.
6.1.12 L’entrepreneur/applicateur doit fournir les éléments suivants au client pour examen et
approbations, bien avant de lancer l’application du revêtement en élastomère sur les surfaces spécifiées:
a) nom et numéro du composé d’élastomère;
8 © ISO 2016 – Tous droits réservés
b) panneaux d’essai revêtus avec le composé d’élastomère proposé et vulcanisé comme échantillon de
référence;
c) certificat d’essai émis par le laboratoire interne, ainsi que par le laboratoire externe désigné par
le client, attestant que le polychloroprène et/ou l’EPDM sont qualifiés, conformes aux propriétés
chimiques et physiques désirées, et satisfont aux considérations spéciales éventuelles.
6.1.13 Une autorisation d’utilisation doit être obtenue pour les matériaux de revêtement à utiliser sur
les tuyaux de riser dans la zone d’action des vagues d’eau de mer auprès des autorités environnementales
locales et internationales qui gèrent ou contrôlent la pollution marine d’après des normes spécifiées.
6.1.14 Suite à l’approbation du client du revêtement/du lining en élastomère sélectionné, l’applicateur
doit déterminer les exigences du site, préparer l’exposé de méthode (MS), le plan de contrôle (ITP) et la
documentation d’assurance qualité/contrôle qualité et les soumettre au client pour approbation.
6.1.15 Après approbation des documents (suivant 6.1.14), l’applicateur doit organiser une épreuve de
qualification du mode opératoire (PQT), pour donner une démonstration des travaux de revêtement
à effectuer sur une machine de revêtement automatique de tuyaux, ainsi que des méthodes de pose
manuelle, en produisant un échantillon d’essai (comme requis en 6.1.12). L’entrepreneur, le client et le
fabricant du matériau de revêtement doivent être présents lors de la PQT pour approbations.
6.2 Exigences relatives aux matériaux
6.2.1 Les revêtements en polychloroprène élastomère pour risers doivent être adaptés à une
utilisation en eau de mer, à des températures de l’air ambiant pouvant descendre jusqu’à −35 °C et à des
températures en service de +90 °C maximum pour la durée de vie de conception spécifiée.
6.2.2 Les revêtements en éthylène-propylène-diène monomère (EPDM) pour risers doivent être
adaptés à une utilisation en eau de mer, à des températures de l’air ambiant pouvant descendre jusqu’à
−35 °C et à des températures en service de +120 °C maximum pour la durée de vie de conception
spécifiée.
6.2.3 Les autres produits équivalents doivent être conformes aux exigences relatives aux matériaux
spécifiées dans le présent document.
6.3 Conditionnement, manutention et stockage des matériaux
6.3.1 Tous les matériaux doivent être fournis dans l’emballage d’origine du fabricant, en bon état, sur
l’installation/le chantier de revêtement, clairement marqués avec le code de lot, les modalités de stockage,
la date de fabrication, la durée de stockage, et accompagnés par le certificat de lot correspondant. Le
contenu d’un certificat de lot pour différents matériaux de revêtement est donné dans l’Annexe A pour
référence.
6.3.2 En plus des recommandations du fabricant, tous les matériaux amenés sur le site de travail
doivent être stockés dans des zones couvertes, fraiches, sèches, bien ventilées, et doivent être maintenus
propres, secs et exempts de tout contaminant avant et durant l’application. Tous les matériaux ayant été
alté
...
Frequently Asked Questions
ISO 18797-1:2016 is a standard published by the International Organization for Standardization (ISO). Its full title is "Petroleum, petrochemical and natural gas industries - External corrosion protection of risers by coatings and linings - Part 1: Elastomeric coating systems-polychloroprene or EPDM". This standard covers: ISO 18797-1:2016 specifies the minimum requirements for materials selection, surface preparation, application, inspection, testing, qualification and acceptance criteria of external coating for steel risers pipes used in the splash zone, their field joints and clamps/guides, using an elastomeric protective coating based on polychloroprene, EPDM or equivalent. This is applicable for new construction and repair of applied pipes before installation. Maintenance requirements and field repairs are covered in ISO 18797-2. ISO 18797-1:2016 also specifies the requirements for transportation, handling and storage of riser pipes before and after surface preparation and coating application.
ISO 18797-1:2016 specifies the minimum requirements for materials selection, surface preparation, application, inspection, testing, qualification and acceptance criteria of external coating for steel risers pipes used in the splash zone, their field joints and clamps/guides, using an elastomeric protective coating based on polychloroprene, EPDM or equivalent. This is applicable for new construction and repair of applied pipes before installation. Maintenance requirements and field repairs are covered in ISO 18797-2. ISO 18797-1:2016 also specifies the requirements for transportation, handling and storage of riser pipes before and after surface preparation and coating application.
ISO 18797-1:2016 is classified under the following ICS (International Classification for Standards) categories: 75.180.10 - Exploratory, drilling and extraction equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase ISO 18797-1:2016 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.












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