kSIST FprEN ISO 12736-2:2023

SLOVENSKI STANDARD
oSIST prEN ISO 12736-2:2022
01-marec-2022
Industrija za predelavo nafte in zemeljskega plina - Mokre toplotne izolacijske
prevleke za naftovode in podvodno opremo - 2. del: Kvalifikacijski postopki za
proizvodne postopke in postopke pri uporabi (ISO/DIS 12736-2:2021)
Petroleum and natural gas industries - Wet thermal insulation systems for pipelines and
subsea equipment - Part 2: Qualification processes for production and application
procedures (ISO/DIS 12736-2:2021)
Erdöl- und Erdgasindustrie - Wärmedämmschicht für Rohrleitungen und
Unterwasseranlagen - Teil 2: Qualifizierungsprozess für Produktions- und
Anwendungsverfahren (ISO/DIS 12736-2:2021)
Industries du pétrole et du gaz naturel - Revêtements pour isolation thermique humide
de canalisations, lignes d'écoulement et structures sous-marines - Partie 2: Processus
de qualification des procédures de production et d'application (ISO/DIS 12736-2:2021)
Ta slovenski standard je istoveten z: prEN ISO 12736-2
ICS:
25.220.20 Površinska obdelava Surface treatment
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
oSIST prEN ISO 12736-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 12736-2:2022

---------------------- Page: 2 ----------------------
oSIST prEN ISO 12736-2:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 12736-2
ISO/TC 67/SC 2 Secretariat: UNI
Voting begins on: Voting terminates on:
2021-12-20 2022-03-14
Petroleum and natural gas industries — Wet thermal
insulation systems for pipelines and subsea equipment —
Part 2:
Qualification processes for production and application
procedures
ICS: 25.220.20; 75.180.10
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
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 12736-2:2021(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 2021

---------------------- Page: 3 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2021 – All rights reserved

---------------------- Page: 4 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms.7
4.1 Symbols . 7
4.2 Abbreviated terms . 8
5 Conformance . 8
5.1 Rounding . 8
5.2 Conformity to requirement . 8
6 Material classes . 9
7 Project specific qualification processes for production and application procedures .9
7.1 General requirements . 9
7.2 Purchase order requirements . 10
7.2.1 General information . 10
7.2.2 Additional information . 10
7.3 Production qualification process . 11
7.3.1 Process description . 11
7.3.2 Project specific qualification considerations . 11
7.3.3 Procedure qualification trial .12
7.3.4 Pre-production trial .12
7.3.5 Production testing . 13
7.4 Application procedures.13
7.4.1 Application procedure specification . 13
7.4.2 Inspection and test plan . 14
7.4.3 Qualification of operators . 15
8 Production testing and inspection .16
8.1 General . 16
8.2 Material tests and inspection . 16
8.3 System tests and inspection . 16
8.4 Inspection documents and traceability. 16
8.5 Guidance in generating an ITP. 17
9 Factory repair .33
9.1 General . 33
9.2 Damage/defect characterization . 33
9.3 Testing . 33
10 Final documentation .33
11 Handling, storage and transportation.34
11.1 Handling, storage and transportation at coating yard .34
11.2 Handling, storage and transportation at site .34
Annex A (informative) Guidelines for using this document.35
Annex B (informative) Guidelines on the design of wet thermal insulation systems on a
project basis .40
Annex C (normative) Fatigue test .46
Annex D (normative) k-value for projects .47
iii
© ISO 2021 – All rights reserved

---------------------- Page: 5 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
Annex E (normative) Inorganic microsphere content and breakage and air entrapment in
inorganic syntactic foams .53
Bibliography .56
iv
  © ISO 2021 – All rights reserved

---------------------- Page: 6 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
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 of the voluntary nature of standards, 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
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 2, Pipeline
transportation systems.
This second edition partly cancels and replaces the first edition (ISO 12736:2014), which has been
technically revised and split into three parts.
The main changes compared to the previous edition are as follows:
— clearer delineation between commercial projects and validation;
— introduction of material classes;
— elimination of system specific qualification testing tables;
— introduction of detailed thermal conductivity testing requirements;
— introduction of project specific functional tests;
— addition of informative annexes with guidelines for using this document and design of systems.
A list of all parts in the ISO 12736 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
© ISO 2021 – All rights reserved

---------------------- Page: 7 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
Introduction
Users of this document are advised that further or differing requirements can be required for individual
applications. This document is not intended to inhibit a vendor from offering, or the purchaser from
accepting, alternative equipment or engineering solutions for the individual application. This can be
particularly applicable where there is innovative or developing technology. Where an alternative is
offered, it is the responsibility of the vendor to identify any variations from this document and provide
details. Annex A further clarifies the intended use of this document.
vi
  © ISO 2021 – All rights reserved

---------------------- Page: 8 ----------------------
oSIST prEN ISO 12736-2:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 12736-2:2021(E)
Petroleum and natural gas industries — Wet thermal
insulation systems for pipelines and subsea equipment —
Part 2:
Qualification processes for production and application
procedures
1 Scope
This document defines the minimum requirements for project specific product and process qualification
of wet thermal insulation systems applied to pipelines in a factory setting and subsea equipment in the
petroleum and natural gas industries.
This document is not applicable to:
— pre-fabricated sections;
— thermal insulation in the annulus of a steel pipe-in-pipe system;
— maintenance works on existing installed wet thermal insulation systems;
— project qualification of anticorrosion coatings or the requirements for application thereof.
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 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore
hardness)
ISO 1133 (all parts), Plastics — Determination of the melt mass-flow rate (MFR) and the melt volume-flow
rate (MVR) of thermoplastics
ISO 1183 (all parts), Plastics — Methods for determining the density of non-cellular plastics
ISO 2781, Rubber, vulcanized or thermoplastic — Determination of density
ISO 3104, Petroleum products — Transparent and opaque liquids — Determination of kinematic viscosity
and calculation of dynamic viscosity
ISO 7619-1, Rubber, vulcanized or thermoplastic — Determination of indentation hardness — Part 1:
Durometer method (Shore hardness)
ISO 8301, Thermal insulation — Determination of steady-state thermal resistance and related properties
— Heat flow meter apparatus
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)
1
© ISO 2021 – All rights reserved

---------------------- Page: 9 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
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 10474, Steel and steel products — Inspection documents
ISO 12736-1:202X, Petroleum and natural gas industries — Wet thermal insulation systems for pipelines,
flow lines, equipment and subsea structures — Part 1: Validation of materials and insulation systems
ISO 12736-3, Petroleum and natural gas industries — Wet thermal insulation systems for pipelines, flow
lines, equipment and subsea structures — Part 3: Interfaces between systems, field joint coating, field
repairs and prefabricated insulation
3 Terms and definitions
For the purposes 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 https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
agreed
specified in the purchase order
Note 1 to entry: To be discussed by the system provider (3.47) and system purchaser (3.48) with input from end
user (3.10) as required.
3.2
application procedure specification
quality specification document, or group of specifications, describing procedures, method, equipment,
tools, etc. used for system (3.44) application
3.3
batch
quantity of material (3.23) produced in a continuous manufacturing operation using raw materials of
the same source or grade
3.4
bend
permanently curved or angled section of tubular pipe
3.5
blown foam
insulation material (3.23) formed by incorporating a gas phase into a polymer matrix
3.6
certificate of analysis
document provided by the manufacturer which indicates results of specific tests or analysis, including
test methodology, performed on a defined lot of the manufacturer’s product and corresponding
conformity ranges
3.7
construction joint
interface (3.18) where both systems (3.44) are identical
2
  © ISO 2021 – All rights reserved

---------------------- Page: 10 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
3.8
cool down time
time taken for a fluid contained within a pipeline (3.29) or subsea equipment (3.42) to reach a pre-
determined temperature from specific start temperatures (internal and external) when flow is stopped
3.9
cutback
length of item left uncoated at each end for joining purposes
Note 1 to entry: Joining purposes are welding for example.
3.10
end user
company that owns and/or operates the pipeline (3.29) or subsea equipment (3.42)
3.11
factory applied
applied in a permanent facility
3.12
field joint
uncoated area that results when two pipe sections, or a pipe section and a fitting (3.13), with cutbacks
(3.9) are assembled by welding or other methods
3.13
fitting
receptacle on a piece of subsea equipment (3.42), which interfaces to a pipeline (3.29)
3.14
high molecular weight precursor thermoset
material (3.23), which is a polymeric compound that remains malleable until application of sufficient
heat to cause network formation and then does not flow upon reheating
EXAMPLE Butyl rubber.
3.15
inorganic syntactic foam
insulation material (3.23) formed by dispersing inorganic hollow particles within a polymer matrix
3.16
inspection and test plan
document providing an overview of the sequence of inspections and tests, including appropriate
resources and procedures
3.17
inspection document
document issued by the system provider (3.47) and attesting that the supplied system (3.44) is in
conformity with the requirement given in purchase order
Note 1 to entry: See also ISO 10474.
3.18
interface
location where two systems (3.44) meet and affect each other.
Note 1 to entry: A field joint system has two interfaces.
Note 2 to entry: In the case of multilayer systems, interfaces can be made up of multiple sub-interfaces.
3
© ISO 2021 – All rights reserved

---------------------- Page: 11 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
3.19
J-lay
method of pipeline (3.29) installation in which pipelines are assembled by welding together pre-
insulated pipes, with subsequent application of a field joint (3.12) system, in vertical position, onboard
an installation vessel with a tower
Note 1 to entry: The pipeline is lowered into the water vertically and creates a characteristic J-shape when
touching the seabed.
Note 2 to entry: This method is used mainly for deep water.
3.20
jumper
short section of pipeline (3.29) that transfers fluid between two pieces of subsea equipment (3.42)
3.21
liquid precursor elastomeric thermoset
material (3.23), which is a polymeric compound with its glass transition below ambient temperature,
that is produced via combination of one or more components that can be pumped and flow as liquids
and which reacts to create a crosslinked polymer that does not flow upon reheating
EXAMPLE Liquid precursor silicone rubber.
3.22
liquid precursor non-elastomeric thermoset
material (3.23), which is a polymeric compound with its glass transition above ambient temperature,
that is produced via combination of one or more components that can be pumped and flow as liquids
and which reacts to create a crosslinked polymer that does not flow upon reheating
EXAMPLE Liquid epoxy.
3.23
material
polymeric compound applied to the surface to be protected/insulated in units of discrete thickness
(layers) to build up a system (3.44)
3.24
material data sheet
form containing typical data regarding the physical and mechanical properties of a particular material
(3.23) used in the coating process including guidelines and recommendations for its processing and use
3.25
material manufacturer
legal entity responsible for the manufacture of one or more materials (3.23) utilized in a system (3.44)
3.26
material maximum and minimum rated temperature
maximum and minimum temperature to which a particular material (3.23) can be continuously
exposed, as per system provider (3.47) recommendation, during storage or in service as part of a system
(3.44)
Note 1 to entry: For multi-layer systems, the material maximum rated temperature can be less than the system
maximum rated temperature (3.45).
3.27
material maximum operating temperature
the specific maximum temperature that a particular material (3.23) will see during service as part of a
system (3.44) as designed for a specific project
4
  © ISO 2021 – All rights reserved

---------------------- Page: 12 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
3.28
maximum rated pressure
maximum hydrostatic pressure to which the system (3.44) can be exposed, according to the system
provider (3.47)
3.29
pipeline
flowline
tubular piping used to convey fluids
Note 1 to entry: Pipeline includes jumpers (3.20), risers (3.36) and field joints (3.12).
3.30
pi tape
precision vernier periphery tape that allows the direct and accurate measurement of the diameter of
tubular objects without the need for calipers or micrometres
3.31
pre-fabricated insulation
section of stand-alone insulative material (3.23), which is factory manufactured into its final form and
then installed in the field by mechanically fastening or bonding to a corrosion protected structure
3.32
pre-production trial
series of tests performed immediately before the start of production, designed to demonstrate that the
requirements of the validated system (3.44) and/or procedure qualification trial (3.33) are achieved, as
outlined in this document and as agreed
3.33
procedure qualification trial
series of tests designed to demonstrate that the materials (3.23), system provider (3.47), equipment and
procedures can produce the system (3.44) in accordance with the validation dossier (3.54) and meet the
specific project requirements as outlined in this document and as agreed
3.34
project
scope of work agreed upon contractually between system purchaser (3.48) and system provider (3.47)
3.35
reel-lay
R-lay
method of pipeline (3.29) installation in which long stalks (3.41) of pre-insulated pipes are pre-
assembled by welding and application of field joint (3.12) system onshore before being spooled onto
large reels onboard the installation vessel, which then lays the pipes by unspooling the reel offshore
3.36
riser
vertical portion of a pipeline (3.29), including the bottom bend, arriving on or departing from an
offshore surface installation
3.37
safety data sheet
DEPRACATED: material safety data sheet
form intended to provide workers and emergency personnel with procedures for handling and working
with a material (3.23) utilized in the manufacture of the system (3.44) in a safe manner including
physical data
Note 1 to entry: Physical data can include flash point, toxicity and first aid.
5
© ISO 2021 – All rights reserved

---------------------- Page: 13 ----------------------
oSIST prEN ISO 12736-2:2022
ISO/DIS 12736-2:2021(E)
3.38
service life
specified period of use for a system (3.44) in service
4.39
S-lay
method of pipeline (3.29) installation in which pipelines are assembled by welding together pre-
insulated pipes, with subsequent application of a field joint (3.12) system, onboard an installation vessel
in a horizontal orientation
Note 1 to entry: The pipeline curvature created from the vessel down to the seabed is a characteristic S-shape.
Note 2 to entry: This method is used mainly for low to medium water depths.
3.40
solid/solid filled
insulation material (3.23) which systematically does not contain voids, bubbles, or hollow particles
3.41
stalk
continuous string of welded and field joint (3.12) coated pipe, which is prepared in readiness for pipe
spooling onto a reel-lay (3.35) barge
Note 1 to entry: Note1 to entry: A number of stalks will normally be required to make up a pipeline (3.29).
3.42
subsea equipment
components from a subsea production system, including subsea processing items and structures, meant
to control hydrocarbons, not including pipelines (3.29)
EXAMPLE Valve, connector, manifold, christmas tree, flowline end termination.
3.43
substrate
surface to which a material (3.23) is applied or is to be applied
3.44
system
all of the various materials (3.23) and the combination thereof, which can include layers of anti-
corrosion, insulation, adhesive, and protective materials, as defined by cross-section to the underlying
substrate (3.43) at a single point, which function together to act as a wet thermal insulation (3.55)
3.45
system maximum and minimum rated temperature
maximum and minimum temperature to which a particular system (3.44) can be continuously exposed,
as per system provider (3.47) recommendation, during storage or in service
3.46
system maximum operating temperature
...