NORSOK
Standard
NORSOK M-004:2018
Published: 2018-12-23
Language: English
Piping and equipment insulation
Reference number:
NORSOK M-004:2018 (en)
© NORSOK 2018
ICS: 75.180.01, 913.12, 13.220.99, 29.080
Copyright protected document
Unless otherwise specified, no part of this document may be reproduced or used in any form or
in any way without written permission obtained in advance. This includes photocopies and
electronic use, such as publishing on the Internet or an intranet. Any reproduction that violates
this may lead to seizure, liability and/or legal prosecution. Requests related to reproduction are
to be directed to Standard Online AS.
NORSOK M-004:2018
Contents
Foreword .......................................................................................................................................................................... v
Introduction.................................................................................................................................................................. vii
1
Scope .......................................................................................................................................................................1
2
Normative references .......................................................................................................................................1
3
Terms and definitions.......................................................................................................................................3
4
Symbols and abbreviations.............................................................................................................................6
5
Qualification requirements ............................................................................................................................7
5.1
Qualification of personnel ................................................................................................................................. 7
5.1.1 Qualification of insulation fitters .................................................................................................................... 7
5.1.2 Qualification of supervisors, foremen and QC personnel ..................................................................... 7
5.2
Qualification of insulation system .................................................................................................................. 7
5.2.1 Class 5 and F: Fire insulation............................................................................................................................ 8
5.2.2 Class 6, 7 and 8: Acoustic insulation ............................................................................................................. 8
5.2.3 Sealing of penetrations ....................................................................................................................................... 8
5.3
Insulation procedure ........................................................................................................................................... 9
5.3.1 Insulation procedure specification (IPS)..................................................................................................... 9
5.3.2 Drawings for penetration seals .................................................................................................................... 10
5.3.3 Inspection and test plan (ITP) ...................................................................................................................... 10
6
Materials ............................................................................................................................................................. 11
6.1
Environmentally requirements .................................................................................................................... 11
6.2
Selection of insulation materials ................................................................................................................. 11
6.3
Selection of cladding ......................................................................................................................................... 13
6.3.1 Metallic cladding................................................................................................................................................. 13
6.3.2 Non-metallic cladding ...................................................................................................................................... 14
6.4
Aluminium foils ................................................................................................................................................... 15
6.5
Sealers and sealing tape and gaskets ......................................................................................................... 15
6.6
Perforated guards .............................................................................................................................................. 15
6.7
Accessories ........................................................................................................................................................... 15
7
Design engineering ......................................................................................................................................... 16
7.1
Designing for insulation .................................................................................................................................. 16
7.1.1 Class 1: Heat conservation ............................................................................................................................. 17
7.1.2 Insulation systems with vapour barrier ................................................................................................... 17
7.1.3 Insulation of valves and flanges ................................................................................................................... 17
7.2
Calculation of insulation thickness ............................................................................................................. 18
7.2.1 Class 1,2,4 and 9 ................................................................................................................................................. 18
7.2.2 Class 3 ..................................................................................................................................................................... 18
7.2.3 Class 5 or F ............................................................................................................................................................ 18
7.2.4 Class 6, 7 and 8 .................................................................................................................................................... 19
7.3
Combination of insulation classes ............................................................................................................... 19
7.3.1 General.................................................................................................................................................................... 19
7.3.2 Thermal insulation and/or personnel protection combined with fire protection ................. 19
7.3.3 Thermal insulation and/or personnel protection combined with acoustic insulation......... 19
7.3.4 Fire protection combined with acoustic insulation ............................................................................. 19
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NORSOK M-004:2018
7.3.5
Thermal insulation and/or personnel protection combined with fire protection and
acoustic insulation ............................................................................................................................................. 19
8
Installation and inspection .......................................................................................................................... 20
8.1
General.................................................................................................................................................................... 20
8.1.1 Workmanship ...................................................................................................................................................... 20
8.1.2 Technical requirements................................................................................................................................... 20
8.1.3 Insulation with vapour barrier ..................................................................................................................... 20
8.2
Piping insulation................................................................................................................................................. 21
8.3
Vessel insulation ................................................................................................................................................. 21
8.3.1 Vessel insulation ................................................................................................................................................. 21
8.3.2 Segment insulation of vessel ......................................................................................................................... 21
8.4
Cladding ................................................................................................................................................................. 21
8.4.1 Metallic cladding................................................................................................................................................. 21
8.4.2 Non-metallic cladding ...................................................................................................................................... 22
8.4.3 GRP ........................................................................................................................................................................... 23
8.5
Flanges and valves ............................................................................................................................................. 23
8.5.1 General.................................................................................................................................................................... 23
8.5.2 Surface material for jackets ........................................................................................................................... 23
8.5.3 Insulation materials for prefabricated boxes ......................................................................................... 23
8.5.4 Insulation boxes with vapour barrier ........................................................................................................ 23
8.5.5 Locking mechanism........................................................................................................................................... 24
8.5.6 Identification ........................................................................................................................................................ 24
8.6
Non-contact insulation..................................................................................................................................... 24
8.7
Drainage ................................................................................................................................................................. 25
8.8
Instrument insulation....................................................................................................................................... 25
8.9
Sealing of penetrations .................................................................................................................................... 25
8.10 Inspection .............................................................................................................................................................. 25
Annex A (informative) Key data for insulation ............................................................................................... 26
Annex B (normative) Qualification of new products .................................................................................... 27
B.1
General.................................................................................................................................................................... 27
B.2
Testing .................................................................................................................................................................... 27
B.3
Documentation .................................................................................................................................................... 27
Annex C (informative) Test piece for site test ................................................................................................. 28
Annex D (normative) Material Data sheets (MDSs) ...................................................................................... 29
Bibliography ................................................................................................................................................................. 37
iv
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NORSOK M-004:2018
Foreword
NORSOK M-004:2018 was adopted as NORSOK Standard 2018-12-23.
NORSOK M-004:2018 supersedes NORSOK R-004 Rev. 3, August 2006.
NORSOK is an acronym for the competitive position of the Norwegian continental shelf and comprise
petroleum industry standards in Norway. The collaboration initiative in 1993 between the authorities
and the petroleum industry initiated the development of NORSOK standards.
Reducing the project execution time and developing and operating cost for petroleum installations on
the Norwegian shelf was the target.
The intention for the Petroleum industry is to develop and use standards providing good technical and
cost-effective solutions to ensure that the petroleum resources are exploited and managed in the best
possible way by the industry and the authorities. The industry will actively contribute to the
development and use of international standards in the global market.
The NORSOK standards shall:
 bridge the gap based on experiences from the Norwegian continental shelf where the international
standards are unsatisfactorily;
 replace oil company specifications where possible;
 be available as references for the authorities’ regulations;
 be cost effective; and
 promote the Norwegian sector as an attractive area for investments and activities.
Developing new NORSOK standards and regular maintenance of existing standards shall contribute to
maintain the competitiveness both nationally and internationally for the Norwegian petroleum
industry.
The NORSOK standards are developed by experts from the Norwegian petroleum industry and
approved according to the consensus principles as laid down by the guidelines given in NORSOK A-001
N directive.
The NORSOK standards are owned by the Norwegian Oil and Gas Association, the Federation of
Norwegian Industries and the Norwegian Shipowners' Association. They are managed and published by
Standards Norway.
Historically, piping and equipment insulation has been under the formal responsibility of NORSOK EG R
Mechanical. Due to transfer of responsibility from NORSOK EG R Mechanical to NORSOK EG M Materials,
the standard is re-issued as NORSOK M-004:2018, edition 1.
The re-issuance of the standard also reflects a major revision and update of the standard itself. The
update is based on industry experience over the last years.
The major changes are listed as follows:
-
-
the standard has been re-structured and rewritten.
o Qualification requirements are included in a separate section.
o Material requirements are included in a separate section.
o Design engineering requirements are included in a separate section.
o Installation and inspection requirements are included in a separate section.
criteria for fire testing has been aligned with requirements in S-001 and best practise in the
industry;
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NORSOK M-004:2018
-
-
a sketch showing test piece for site test has been included as Annex C (informative annex);
material data sheets for insulation materials, incl. GRP cladding, have been established and included
as Annex D (normative);
all references to relevant international standards have been reviewed and changed where
convenient. Several changes are made;
requirements for aerogel insulation materials have been included;
requirements for polymer-based fire protection have been included;
temperature definitions applicable for assessing personnel protection, material selection and
vapour barrier are added;
IPT requirements have been deleted;
in general, selection criteria and selection possibilities are included in tables where convenient, and
not as free text;
reference to “Insulation Handbook” is removed.
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NORSOK © 2018
-
-
Annex A and C are informative. Annex B and D are normative.
NORSOK M-004:2018
Introduction
NORSOK M-004:2018 has been established by a working group nominated by NORSOK EG M (expert
group for materials). The working group was represented by insulation suppliers, engineering and
fabrication contractors, institutes and operators. The standard has been established based on
consensus and covers Norwegian Petroleum industry requirements.
The standard shall be used by the onshore and offshore Norwegian Petroleum industry. The standard
specifies good technical and cost-effective solutions.
The standard is relevant for:
•
•
•
•
insulation suppliers – providing insulation systems complying with the standard;
certification bodies, test laboratories –personnel qualifications and insulation system testing
and qualifications;
engineering and fabrication contractors – detail engineering and facilitating of insulation
systems;
operators – purchasing and maintenance of insulation systems.
The standard covers insulation for piping and equipment for the following insulation purposes:
•
•
•
•
thermal purposes;
fire protection;
acoustic protection;
personnel protection.
Additionally, the standard covers penetration seals through cellar decks, bulkheads, etc., for fire
protection and explosion purposes.
Corrosion under insulation (CUI) is a major challenge for onshore and offshore installations. In all life
cycle phases, it is important to have high focus on how to minimize CUI, from design to decommission.
NORSOK M-004 has strong relationship to NORSOK C-002, NORSOK M-001, NORSOK M-501, NORSOK S001 and NORSOK S-002. Where this standard refers to these standards, this standard shall be read and
understood in conjunction with these standards.
The corresponding annexes A and C are informative. Annexes B and D are normative.
Normative text contains the requirements of the standard. Informative text is only guidance to the
reader. All text in foreword, introduction and notes is informative text. Note to entries in section 3 and
annexes to the document may be either normative or informative.
The bibliography lists standards, norms, laws, regulations and other literature that may be relevant to
the use of this document.
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NORSOK Standard
NORSOK M-004:2018
Piping and equipment insulation
1
Scope
This NORSOK standard covers the minimum requirements for insulation of pipes, equipment, vessels,
tanks, valves, flanges, instrument tubing and penetrations for offshore/onshore installations. This
standard covers thermal insulation, personnel protection, fire protection and acoustic protection.
This standard is not intended for subsea installation.
This NORSOK standard does not cover refractory or HVAC (heating, ventilation and air condition)
related items.
2
Normative references
The following referenced documents contain text which fully or in part is part of the requirements in
the document. For dated references, only the edition cited applies. For undated references, the latest
edition of the cited document applies (including amendments).
NORSOK C-002,
Architectural components and equipment
Material selection
NORSOK M-001,
Surface preparation and protective coating
NORSOK S-001,
NORSOK S-002,
Working environment
ISO 178,
Plastics- Determination of flexural properties
NORSOK M-501,
ISO 37,
ISO 527,
Technical Safety
Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain
properties
Plastics- Determination of tensile products
ISO 834,
Fire-resistance tests – Elements of building constructions – (all parts)
ISO 5660-1,
Reaction-to-fire tests – Heat release, smoke production and mass loss rate – Part 1:
Heat release rate (cone calorimeter method) and smoke production rate (dynamic
measurement)
ISO 8497,
Thermal insulation – Determination of steady-state thermal transmission
properties of thermal insulation for circular pipes
ISO 9865,
Textiles – Determination of water repellency of fabrics by the Bundesmann rain
shower test
ISO 12944-9,
Paints and vanishes – Corrosion protection of steel structures by protective paint
systems – Part 9: Protective paint systems and laboratory performance test
methods for offshore and related structures
ISO 15665,
Acoustics – Acoustics insulation for pipes, valves and flanges (including
Corrigendum 1)
ISO 9364,
NORSOK © 2018
Continuous hot-dip aluminium/zinc-coated steel sheet of commercial, drawing and
structural qualities
1
NORSOK M-004:2018
ISO 20340:2009,
Paints and varnishes – Performance requirements for protective paint system for
offshore and related structures
ISO 80079-36,
Explosive atmospheres – Part 36: Non-electrical equipment for explosive
atmospheres – Basic method and requirements
EN 823,
Thermal-insulating products for building applications – Determination of thickness
ISO 22899-1,
Determination of the resistance to jet fires of passive fire protection materials –
Part 1: General requirements
EN 822,
Thermal-insulating products for building applications – Determination of length
and width
EN 1363-2,
Fire resistance test. Alternative and additional procedures
EN 1608,
Thermal-insulating products for building applications – Determination of tensile
strength parallel to faces
EN 10346,
Continuously hot-dip coated steel flat product for cold forming
EN 1604,
Thermal-insulating products for building applications – Determination of
dimensional stability under specified temperature and humidity conditions
EN 1609,
Thermal insulating products for building applications – Determination of shortterm water absorption by partial immersion
EN 12086,
Thermal insulating products for building applications – Determination of water
vapour transmission properties.
EN 12667,
Thermal performance of building materials and products – Determination of
thermal resistance by means of guarded hot plate and heat flow meter methods –
Products of high and medium thermal resistance
EN 12939,
Thermal performance of building materials and products – Determination of
thermal resistance by means of guarded hot plate and heat flow meter methods –
Thick products of high and medium thermal resistance
EN 13468,
Thermal insulating products for building equipment and industrial installations –
Determination of trace quantities of water-soluble chloride, fluoride, silicate,
sodium ions and pH
EN 13471:2001,
Thermal insulating products for building equipment and industrial installations –
Determination of the coefficient of thermal expansion
EN 13472,
Thermal insulating products for building equipment and industrial installations –
Determination of short-term water absorption by partial immersion of preformed
pipe insulation
EN 13501-1:2007+A1 Fire classifications of construction products and building elements – Part 1:
Classification using data from reaction to fire test
EN 14303,
Thermal insulation products for building equipment and industrial installations –
Factory made mineral wool (MW) products – Specification
EN 14305,
Thermal insulation products for building equipment and industrial installations –
Factory made cellular glass (CG) products – Specification
EN 14707,
Thermal insulating products for building equipment and industrial installations –
Determination of maximum service temperature for preformed boxes
EN 14304,
Thermal insulation products for building equipment and industrial installations –
Factory made flexible elastomeric foam (FEF) products – Specification
EN 14706,
Thermal insulating products for building equipment and industrial installations –
Determination of maximum service temperature
2
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NORSOK M-004:2018
EN 60332-1-1
Tests on electrical and optical fibre cables under fire conditions – Part 1-1 Tests
for vertical flame propagation for a single insulated wire or cable – Apparatus
EN 60332-1-3
Tests on electrical and optical fibre cables under fire conditions – Part 1-3 Tests
for vertical flame propagation for a single insulated wire or cable – Procedure for
determination of flaming droplets/particles
EN 60332-1-2
EN ISO 12241,
EN ISO 13787,
ASTM C-201,
Tests on electrical and optical fibre cables under fire conditions – Part 1-2 Tests
for vertical flame propagation for a single insulated wire or cable – Procedure for
1 kW pre-mixed flame
Thermal insulation for building equipment and industrial installations –
Calculation rules
Thermal insulation products for building equipment and industrial installations –
Determination of declared thermal conductivity
Standard Test Method for Thermal Conductivity of Refractories
ASTM C1728,
Standard Specification for Flexible Aerogel Insulation
DNVGL-CP-0165,
Cable and pipe penetrations
ASTM-E662,
IACS UR S14,
IMO 2010
IMO 2010
IMO 2010
IMO 2010
NES 713,
Standard Test Method for Specific Optical Density of Smoke Generated by Solid
Materials
Testing procedures of watertight compartments
FTP Code Part 1 Non- combustibility test
FTP Code Part 2 Smoke and toxicity test
FTP Code Part 3 Test for "A", "B" and "F" Class Divisions
FTP Code Part 5 Test for surface flammability
Toxicity Test Apparatus
Regulations
Marine Equipment Directive, Directive No. 2014/90/EU
PSA,
The Facilities Regulations (Innretningsforskriften)
PSA,
EC,
3
Technical and Operational Regulations (Teknisk og operasjonell forskrift for
landanlegg)
Regulations No. 1272/2008
Terms and definitions
In this document, the following terms and definitions apply.
3.1
shall (requirement)
expression in the content of a document conveying objectively verifiable criteria to be fulfilled and from
which no deviation is permitted if compliance with the document is to be claimed
Note 1 to entry:
clause 7.2 Table 3.
NORSOK © 2018
Requirements are expressed using the verbal forms specified in ISO/IEC Directives, Part 2
3
NORSOK M-004:2018
3.2
should (recommendation)
expression in the content of a document conveying a suggested possible choice or course of action
deemed to be particularly suitable without necessarily mentioning or excluding others
Note 1 to entry:
Recommendations are expressed using the verbal forms specified in ISO/IEC Directives,
Part 2 clause 7.3 Table 4.
Note 2 to entry:
In the negative form, a recommendation is the expression that a suggested possible choice
or course of action is not preferred but it is not prohibited.
3.3
may (permission)
expression in the content of a document conveying consent or liberty (or opportunity) to do something
Note 1 to entry:
clause 7.4 Table 5.
Permissions are expressed using the verbal forms specified in ISO/IEC Directives Part 2
3.4
can (possibility and capability)
1: expression in the content of a document conveying expected or conceivable material, physical or
causal outcome.
2: expression in the content of a document conveying the ability, fitness, or quality necessary to do or
achieve a specified thing
Note 1 to entry:
Possibility and capability is expressed using the verbal forms specified in ISO/IEC
Directives, Part 2 clause 7.5 Table 6.
3.5 temperature definitions
Normal operating temperature: temperature during normal operation, including normal variations.
Maximum operating temperature: maximum temperature including plant operation at unstable
condition. Unstable condition includes start-up/ shutdown, control requirements and process upsets.
Ambient temperature; temperature of the air surrounding the product to be insulated. The product
might be a pipe, valve, vessel, etc.
In this standard, the following temperature definitions applies:
• personnel protection: normal operating temperature, Tn, shall be used for evaluation of the
need for personnel protection;
• vapour barrier: normal operating temperature, Tn, shall be used for evaluation of the need
for vapour barrier.
Material selection: maximum operating temperature, Tm, shall be used for insulation and cladding
material selection.
3.6
indoor
mechanically ventilated rooms
3.7
Company
operating company, normally a company, ship/rig owner, contractor or subcontractor that is
responsible for the facility
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NORSOK M-004:2018
3.8
Insulation Class 1: Heat conservation
The purpose is to reduce heat losses and to maintain temperatures for the efficient operation of the
process.
3.9
Insulation Class 2: Cold medium conservation
The purpose is to maintain low temperature and control heat input to the process.
3.10
Insulation Class 3: Personnel protection
Protection of personnel from surfaces with temperatures below -10 °C or above 70 °C in normal
operating conditions.
3.11
Insulation Class 4: Frost protection
Insulation to prevent freezing, precipitation and inside condensation.
3.12
Insulation Class 5 and F: Fire protection
The purpose is to reduce the heat input and secure that the temperature on piping, vessels and
equipment is below the specified critical temperature when exposed to the specified fire scenario for
the actual area of installation. Class F is used only for protection of pressurized flange connections if
adjoining piping or equipment is not insulated, otherwise Class 5 alone shall be used.
3.13
Insulation class 6, 7 and 8; Acoustic insulation
Acoustic insulation is specified in order to ensure that noise emission from piping, valves, flanges and
equipment meets the area noise requirements for the working environment. The definition of the
classes of acoustic insulation is as given in ISO 15665, Clause 4. This standard specifies the minimum
insertion loss for each class related to the diameter of the pipe on which it is to be applied.
Class 6
Minimum insertion loss shall be in accordance with the definition given in ISO 15665 for class A.
Valves and flanges shall be insulated when and as required by Company.
Class 7
Minimum insertion loss shall be in accordance with the definition given in ISO 15665 for class B.
Flanges to be insulated. Valves to be insulated when and as required by Company.
Class 8
Minimum insertion loss shall be in accordance with the definition given in ISO 15665 for class C.
Valves and flanges shall be insulated.
3.14
Insulation Class 9: External condensation and icing protection
The purpose is to prevent outside condensation on piping and equipment with normal operating
temperatures below ambient.
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NORSOK M-004:2018
4
Symbols and abbreviations
For this document, the following symbols and abbreviations apply.
AG
Aerogel
AES
Alkali Earth Silicate
CG
Cellular Glass
ASTM
CL
CUI
c/c
DN
EG M
EG R
EVA
FEF
FROSIO
GRP
HSE
IACS
IMO
IPS
American Society for Testing and Materials
symbol of the declared level of soluble chlorides
Corrosion under insulation
centre/centre
Diameter Nominal
Expert Group Materials
Expert Group Mechanical
Ethylene-Vinyl Acetate
Flexible Elastomeric Foam
Faglig Råd for Opplæring og Sertifisering av Inspektører innen Overflatebehandling
Glass fibre Reinforced Polyester
Health, Safety and Environment
International Association of Classification Societies (e.g. DNVGL, Lloyds, TÜV)
International Maritime Organisation
Insulation Procedure Specification
ISO
International Organization for Standardization
MW
Mineral Wool
ITP
Inspection and Test Plan
OD
Outer Diameter of Cladding
PBFP
Polymer Based Fire Protection
P&ID
PSA
Piping & Instrument Diagram
Petroleum Safety Authority (Petroleumstilsynet – PTIL)
EN
European Standard
ST
Service Temperature
QC
Tn
Quality Control
Normal operating temperature
Tm
Maximum operating temperature
Wp
symbol of the declared level for short-term water absorption
Wlp
pH
RH
6
symbol of the declared level of long-term water absorption
potential of Hydrogen
Relative Humidity
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NORSOK M-004:2018
5
Qualification requirements
5.1 Qualification of personnel
5.1.1 Qualification of insulation fitters
All operators shall be qualified. For each work team, minimum 50 % workers shall be qualified to
tradesman level. Operators shall be qualified to tradesman level as insulation fitter. The remaining
operators shall as minimum be qualified by a theoretical examination and practical site test, as given
below. The test scheme shall be subject to Company approval. Company is entitled to be present during
the test. Notification shall be sent min five working days in advance. Insulation contractors shall have a
list of personnel that have passed the test, and this shall be available for the Company. The site test shall
be carried out for each Contract or Project and shall reflect the actual scope of work.
Guidance note: If agreed by Company, the site test can be omitted provided documented relevant site
test.
Prior to the theoretical examination test, the unskilled/semi-skilled operators shall have undergone
relevant theoretical training, e.g. by class lessons.
The theoretical examination test shall demonstrate relevant knowledge of health and safety hazard, use
of protection equipment, insulation materials, application of insulation materials, insulation systems
surface requirements, how to avoid corrosion under insulation and prevent ingress of moisture.
The practical test shall be supervised by a qualified supervisor and examined by qualified QC personnel.
The test shall be carried out with project specific insulation classes and materials according to IPS, on
relevant parts of the test piece in Annex C.
An examination certificate, with photo identification, shall be issued if the candidate passes the
theoretical examination test and the practical test.
The theoretical training, examination and practical test shall be documented. Inspection personnel shall
have access to training, examination and practical test procedures.
5.1.2 Qualification of supervisors, foremen and QC personnel
Personnel carrying out inspection or verification shall be qualified FROSIO Inspector level III, within
insulation. FROSIO Inspector level II, may carry out the inspection work under the supervision of an
inspector level III.
Supervisors and foremen shall be qualified to tradesman level and shall have documented minimum
3 years’ experience with insulation work corresponding to work described in this standard.
All QC- and supervision personnel shall be familiar with the requirements in this NORSOK standard.
5.2 Qualification of insulation system
The insulation systems for the following applications shall be tested, documented and when required
Type Approved/certified prior to any use:
 Class 5 and F: The selected fire protection system shall be tested and documented as described in
Sec. 5.2.1;
 Class 6, 7 and 8: All materials shall be tested, and documented as described in Sec. 5.2.2;
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NORSOK M-004:2018
 sealing penetrations in fire divisions shall be tested and Type Approved as described in Sec. 5.2.3.
5.2.1 Class 5 and F: Fire insulation
Selected fire insulation system (including any removable jackets or boxes) shall be tested and properly
documented in accordance with relevant requirements, e.g.:
 PSA requirements as stated in the Facilities Regulations (Innretningsforskriften) and the Technical
and Operational Regulations (Teknisk og operasjonell forskrift for landanlegg) and NORSOK S-001
Technical Safety;
 pool fire testing – the testing shall be performed according to the method described in ISO 834-1.
For a hydrocarbon pool fire, the standard time-temperature curve described in EN 1363-2 shall be
used. Design criteria relevant for evaluation of acceptable fire resistance is given in the Design
Accidental Load specification;
 jet-fire testing - insulation used for passive fire protection against a jet-fire shall be tested in
accordance with the method described in ISO 22899-1. Depending upon the heat flux described in
the Design Accidental Load specification modification of the heat load method might be necessary.
Design criteria relevant for evaluation of acceptable fire resistance is given in the Design Accidental
Load specification;
 explosion testing – there is no standardised method or system for explosion testing. However,
explosion testing shall be carried out to document that the passive fire insulation systems resist the
design accidental loads to which they may be exposed. The explosion testing should be
instrumented to measure:
o
o
o
NOTE
overpressure;
flame arrival time;
explosion loading response using strain gauges, displacement transducers, etc.
Materials and systems already tested according to OTI 95634 can be accepted if agreed with
Company
Fire testing of pipe insulation, boxes and removable jackets shall ensure that all important design
details are covered, e.g. inspection hatches, drains, end caps, joints and section overlaps.
Tests shall be carried out on complete insulation system installed on a test piece on a relevant
dimension, if not otherwise agreed with Company.
5.2.2
Class 6, 7 and 8: Acoustic insulation
All systems shall be tested, and the insertion loss documented in accordance with the measurement
procedure outlined in ISO 15665, Clause 10.
5.2.3
Sealing of penetrations
Penetrations in fire divisions shall not reduce the fire and explosion integrity, stability or the
temperature limitations of such divisions.
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The installed penetration seal shall have an approved and valid certificate issued by recognized
accredited registrar and classification society such as DNVGL or Lloyds. For A, B and F class additionally
in accordance with the Marine equipment directive.
Penetration seals shall be tested in same direction as intended installed. To be installed in both
bulkhead and deck applications, the penetration seals shall be tested in both type of divisions.
Additionally, separate testing is required for single pipes, multiple pipes and cable penetrations.
The following requirements apply:
 penetration sealings for a hydrocarbon fire, “H” Class Division, shall be tested according to the
method described in IMO 2010 FTP Code, part 3 with the following modifications:
o
o
standard time-temperature curve found in EN 1363-2;
acceptance criteria for hydrocarbon fire divisions are found in the Facilities Regulations.
 penetration sealings for a cellulosic fire shall be tested for compliance with IMO 2010 FTP Code
Part 3 Test for "A", "B" and "F" Class Divisions;
 penetration sealing materials shall be tested for compliance with IMO 2010 FTP Code Part 2 and 5
or EN 13501-1:2007+A1.
The following requirements apply (when relevant):
 jet fire testing according to ISO 22899-1 (see Guidance Note in 5.2.1);
 blast requirements specified in the Design Accidental Load specifications;
 water tightness according to DNVGL-CP-0165 Sec. 4.3 and IACS UR S14, Sec. 4.3.
5.3 Insulation procedure
5.3.1 Insulation procedure specification (IPS)
A detailed IPS shall be established based on the requirements of this NORSOK standard, in addition to
relevant project requirements. The IPS shall be approved by Company prior to installation.
The IPS shall as a minimum contain following documents:
 detailed sketches, which shows the system build-up for each insulation class, including necessary
details needed to fulfil the work (also for combination of systems);
 product data sheet for all type of materials;
 detailed drawings and necessary documentation for all type of removable insulation jackets or
boxes for flanges and valves;
 for accessories such as rivets, adjustable ex-centre locks, bands, wires, clips, and breather springs
etc., materials, thicknesses, dimension, type shall be specified.
The IPS shall be followed during all insulation work.
The following changes in the insulation application parameters requires the IPS to be re-approved:
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 any change of insulation material and/or type of cladding;
 change of system build-up;
 change type/manufacture of removable insulation solutions.
5.3.2 Drawings for penetration seals
Penetration seal manufacturer shall prepare typical installation drawings that show any required
installation restrictions determined during the laboratory approval testing. These drawings shall be
referenced on the type approval certificate. The seals shall be installed in accordance with these
drawings. Drawings shall be included in the IPS and penetration dossier. According to NORSOK C-002 a
penetration dossier shall be developed and include penetration for all areas on the installation.
The drawings shall as a minimum contain the following information unless otherwise agreed with
Company:
 fire rating A0/A60/H0/H60 etc;
 minimum and maximum frame (sleeve) dimensions;
 installation symmetry;
 maximum operation temperature;
 minimum and maximum pipe diameter;
 minimum distance between pipes (multiple);
 minimum distance between pipes and frame (sleeve);
 fire exposure side;
 relevant valid certificate references;
 any deviation from certificate;
 any requirement for insulation coat-back.
5.3.3 Inspection and test plan (ITP)
Insulation contractor shall establish both an inspection and test plan (ITP) and an inspection log for the
insulation works. The ITP shall reflect work during production, at delivery and all other pertinent
phases.
The ITP shall be approved by Company.
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6
Materials
6.1 Environmentally requirements
The insulation materials shall fulfil the following requirements:
 shall be tested according to IMO 2010 FTP Code Part 1 or EN 13501-1:2007+A1, for fire
classification. Requirements for fire classification for different insulation materials are given in
MDS for the materials;
 additional requirements regarding non-combustibility and prohibited substances and products are
given in NORSOK S-001 and NORSOK S-002.
6.2 Selection of insulation materials
In general, selection of insulation materials shall be in accordance with Table 1. Alternative insulation
system and materials may be used if the proposed materials and methods satisfy the technical
requirements in this NORSOK standard, see Annex B. All insulation material is subject to Company
approval.
Selection of insulation materials for instrument tubing from DN 10 to and including DN 32 is given in
Table 2. Instrument tubing sizes above 32 mm shall be insulated as piping. Piping tubing shall be
insulated as piping.
Manufacturer of pre-insulated instrument tubes may be used pending approval by Company.
Material data sheets for the following insulation materials are given in Annex D:
 Aerogel (AG);
 Alkali Earth Silicate (AES);
 Cellular Glass (CG);
 Flexible Elastomeric Foam (FEF);
 Mineral Wool (MW).
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Table 1 – Selection of insulation material
Insulation class
Normal operating
Temperature
Insulation material
1
-
Aerogel, AES fibre, cellular glass or mineral wool 1), 2)
3
70 °C < Tn ≤ 150 °C
Insulating coating or perforated guards
2
-
3
Tn ≥ 150 °C
4
Aerogel3) or Cellular glass
Aerogel, AES fibre, cellular glass or mineral wool 1), 2)
-
Aerogel, cellular glass or mineral wool 1), 2)
6, 7, 8
-
9
-
Aerogel, AES fibres, cellular glass or mineral wool 1, 2) as per
qualified system
5
-
Notes
1)
2)
3)
Insulation/fire protection material in accordance with qualified
system. Systems with mineral wool or AES fibres shall comply
with note 1
Aerogel or cellular glass
At Tn temperatures < 180 °C Mineral wool and AES fibres shall only be used as part of a non-contact insulation system or used as a
secondary (outer layer) insulation material applied over e.g. aerogel or cellular glass.
In dry rooms with no sprinkler/deluge system, mineral wool may be used directly on pipes/vessels with a normal operating
temperature above +40 °C. Indoor areas with regular water cleaning or testing of seawater deluge system are not considered dry.
For low temperature application, long term fit for use documentation relevant for onshore/offshore applications in Norway is not
available. For low temperature applications, special consideration should be made. Not recommended for cryogenic (<- 80°C)
temperatures.
Table 2 – Selection of insulation material for instrument tubing (DN 10 mm to DN 32 mm)
Normal operating
Temperature
Tn ≤ 110 °C
110 °C < Tn ≤ 180 °C
Tn > 180 °C
Notes
1)
2)
12
Insulation material
FEF
Mineral wool (MW)
Cladding material
Non-metallic cladding
Non-metallic or metallic cladding
Metallic cladding
Surface temperature on heat tracing cables is to be checked prior to deciding material types for insulation of instrument tubing.
Non-metallic cladding may be either separately applied onto the insulation material on site or may be factory applied to the insulation
material.
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6.3 Selection of cladding
Selection of cladding materials shall be in accordance with Table 3.
Table 3 – Table 3 – Selection of cladding material
Insulation class
All,
except class 5 or F
Application
Offshore
SS316
Aluminium alloy AlMn1
GRP
Non-metallic1) other than GRP
Onshore
5 or F
Notes
1)
2)
Cladding material
SS316
Aluminium alloy AlMn1
GRP
Non-metallic1) other than GRP
Aluzinc, AZ185 2)
All
Cladding to be tested and documented as part of the system
Types of non-metallic cladding shall be subject to Company approval.
Aluzinc is accepted for onshore applications providing:
- No risk for corrosive environment/ atmosphere
- Company approval.
6.3.1 Metallic cladding
6.3.1.1 Stainless steel
Stainless steel metal cladding shall be type SS316, 2D finish and thickness according to table 4.
Table 4 – Cladding thickness, SS316
Dimension, cladding
SS316 2D sheet
< OD 250
0,5 mm
OD 250 – OD 900
0,7 mm
> OD 900
0,9 mm
6.3.1.2 Aluminium alloy
Aluminium alloy cladding shall be type AlMn1 (AA 3103) or equal corrosion resistance and thickness
according to table 5.
Table 5 – Cladding thickness, aluminium.
Dimension, cladding
Aluminium sheet
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≤OD 450
0,7 mm
> OD 450
0,9 mm
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6.3.1.3 Aluzinc
Aluzinc cladding shall be type hot dip coated steel with an alloy of zinc and aluminium to ISO 9364.
Coating weight shall be 185 g/m². Thickness according to table 6.
Table 6 – Cladding thickness, Aluzinc
Dimension, cladding
Aluzinc sheet
≤ OD 300
0,6 mm
OD 300 – OD 1500
0,8 mm
> OD 1500
1,0 mm
6.3.2 Non-metallic cladding
Requirements in Table 7 shall be fulfilled for non-metallic cladding, except GRP.
Table 7 provide minimum requirements for non-metallic cladding (flexible/soft or rigid/hard types) in
terms of fire properties and aging. The table does not define mechanical properties, as these will
depend on the actual product type.
Mechanical properties such as tensile strength, elongation, tear resistance etc. as well as water vapour
transmission/permeability shall be documented for the relevant product, and it is for the Company to
decide if the material is fit for purpose for the actual application.
GRP is covered by MDS GRP, see annex D.
Table 7 – Table 7 – Requirements for non-metallic cladding.
Property
Test method
Heat release
ISO 5660-1
Smoke and toxicity
IMO 2010 FTP code part 2
Flame spread/surface
flammability
Aging resistance
Mechanical properties of
material, including joint
Water vapour
transmission
Decomposition
Requirement
Results to be provided for fire risk
assessment
IMO 2010 FTP code part 5
Pass IMO 2010 FTP code part 52)
ISO 20340:2009/ISO 12944-9:2018,
4200 hours cyclic aging (UV, Salt spray
and freezing)1
It shall be documented that the material
(including system for joining) will
maintain min. 90 % of its tensile
strength/elongation properties after the
accelerated aging
EN 12086
Notes
Pass IMO 2010 FTP code part 22)
Shall be documented
Shall be documented
The material including system for joining
shall not decompose at temperatures from
–20 °C to 70 °C.
1) ISO 20340:2009 is withdrawn and is replaced by ISO 12944-9. Previous tests according to ISO 20340:2009 are acceptable.
2) Criteria for Bulkhead, wall and ceiling linings
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Any possible shrinkage or temperature instability of the non-metallic cladding shall be documented.
For factory applied non-metallic cladding used on FEF on instrument tubing (see Table 2), the tensile
strength shall be minimum 4 MPa, tear strength shall be minimum 5 N/mm and elongation at break
shall be minimum 150 %.
6.4 Aluminium foils
For vapour barrier applications, the following shall apply:
 minimum aluminium foil thickness shall be 25 µm;
 minimum 10 µm polymer coating shall be applied on both sides of the aluminium foil;
 minimum total thickness shall be 45 µm.
For heat tracing and/or coating protection and heat distribution applications, the following shall apply
if aluminium foil is required by the electro discipline:
 minimum aluminium foil thickness shall be 45 µm.
For wrapping of insulation materials used in insulation boxes and jackets, aluminium foil with polymer
coating shall be used, minimum total thickness shall be 45 µm.
6.5 Sealers and sealing tape and gaskets
Joint sealers and sealing tape and gaskets shall be permanently flexible through a relevant temperature
range and shall be capable of withstanding repeated expansion and contraction.
6.6 Perforated guards
Stainless steel perforated metal cladding shall be of type SS316 with 5 or 8 mm hole diameter and 8 or
12 mm hole pitch. Thickness shall be according to table 4 and the finish shall be 2B or 2D.
Distance holders shall be made of polytetrafluorethylene (PTFE) or rubber. Minimum numbers of
distance holders shall be three per circumferential location.
Distance holders shall be installed with c/c maximum 300 mm in both longitudinal and circumferential
direction.
As an alternative to perforated guards, Company approved insulating coating can be applied. The
application shall be in accordance with NORSOK M-501 and supplier's recommendation.
6.7 Accessories
All metal accessories shall be of type SS316, except grommets for reinforced drain holes in tailor made
jackets, which may be of brass. For aluminium cladding, special considerations shall be made.
Stainless steel wire for securing of insulation shall be minimum 1.0 mm thick.
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Table 8 – Steel banding and locking clips
Equipment
Piping and equipment
Vessels
Notes
Band width x thickness
[mm x mm]
12 x 0,4
19 x 0,4
Clips length x width x thickness
[mm x mm x mm] 1)
20 x 13 x 0,7
20 x 20 x 0,7
1) Clip type shall be Stainless Steel Closed Seals
7
Design engineering
7.1 Designing for insulation
The extent of insulation and heat tracing shall be clearly shown on P&ID’s and piping isometrics.
Insulation class and/or combination classes shall be denoted on the line label, according to the
Company ENS (engineering numbering system). In case where multiple insulation classes cannot be
shown in line label, the most stringent ones shall be given in line label. Additional classes may be
denoted by note on the P&ID.
All design shall allow for necessary space for insulation. Particular care shall be taken in piping design
to ensure sufficiently long straight pipe runs around e.g. branches, bends, valves and supports, to enable
proper installation of insulation.
Insulation adjacent to flanges in piping and equipment shall be terminated to allow removal of bolts
without damage to insulation. Minimum free space from the flange to the nearest part of the insulation
shall be equal to the bolt length +25 mm. The termination of the weather protection shall not allow
ingress of water.
Insulated pipes and insulation boxes shall have a minimum 100 mm clearance from surroundings
(parallel insulated/non-insulated lines, bends, tees, structural steel, cable and instrument tubing trays
etc.).
When a rigid type of insulation is used, provision shall be made for longitudinal expansion and
contraction.
Vessels of diameter 1 500 mm and smaller shall be insulated as piping when it comes to:
 support rings, ref. Sec. 8.3.1;
 cladding, ref. Sec. 8.4.1;
 steel band, ref. Sec. 6.7.
However, the vessel shall have insulation installed to allow for inspection of doubling plates, ref. Sec.
8.11.
Bolts on flanges on liquid nozzles from large vessels, more than 4 tons of hydrocarbon should be fire
protected, see NORSOK S-001.
Requirement for coating under insulation is given in NORSOK M-001. The coating system and
application requirement shall be as specified in NORSOK M-501.
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7.1.1 Class 1: Heat conservation
For heat conservation class 1, except for steam services or when otherwise specified, the following shall
not be insulated:
 vessel manhole, handhole covers, nozzles and flanges;
 exchanger nozzles and flanges;
 valves and piping flanges;
 control valves, line valves and fittings, which are to be removed periodically;
 expansion and rotation joint, slide valves and similar equipment.
If the line has heat tracing the heat tracing cable must be protected in places without insulation.
7.1.2 Insulation systems with vapour barrier
All insulation systems with normal operating temperatures below ambient shall have vapour barrier.
Ambient temperature shall be calculated for each project. If normal operating temperature is
alternating below and above ambient temperature, the requirement of vapour barrier shall be
evaluated based on exposure time and temperature.
To protect the vapour barrier, where metal sheet cladding is used, it shall be applied an additional layer
of insulation/spacers. Minimum thickness of the insulation/spacers shall be the length of the
screws/pop rivets or similar + 10mm. The type of insulation/spacers to be used is subject to Company
approval.
7.1.3 Insulation of valves and flanges
When choosing between removable insulation solutions, close attention must be paid to the geometry
of the equipment, weather condition, mechanical impact, high pressure washing, use of chemicals, flare,
available space and size.
Tailor made jackets are only permitted for indoor applications, and only for insulation systems without
vapour barrier. Tailor made jackets shall not be used for valves and flanges above DN400. Using jackets
where there are sharp edges leads to wear and tear of the jacket. Bolts should be covered by plastic caps
to protect the jackets.
Removable insulation for flanges and valves, prefabricated insulation boxes, fire protection systems for
bolts and nuts or tailor-made jackets shall be suitable for quick removal and reinstallation.
For class 5 or F fire protection systems for bolts and nuts may be used, given that the flanges are part of
system with emergency depressurisation capability and the fire protective properties are tested and
documented in accordance with the depressurisation rate.
Prefabricated insulation boxes, which shall be frequently subject for inspection or maintenance, shall be
provided with an inspection hatch with toggle latches and gasket between the hatch and the cladding.
The insulation shall be easily removable under the hatch. Inspection hatches shall be located where
required by Company and shall be indicated on the fabrication isometric.
Insulation boxes for valves and flanges etc. in vertical lines shall be designed with the “roof tile”
principles on the upper section to prevent water ingress.
For valves above DN 900 in all classes, except insulation systems requiring vapour barrier, insulation
boxes with inspection hatches/doors shall be used.
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7.2 Calculation of insulation thickness
7.2.1 Class 1,2,4 and 9
For all thermal insulation classes, class 1,2,4 and 9, the insulation thickness shall be calculated in
accordance with EN ISO 12241, and based upon project requirements for heat loss, energy input, etc.
For thermal calculations on non-contact insulation systems, the annular gap/void provided by the
spacer system shall be included as part of the outer pipe diameter in the calculations (pipe diameter for
calculation = actual pipe diameter + 2 x gap/void). For flat surfaces the contribution of the gap/void can
be ignored.
7.2.2 Class 3
Class 3 shall only be installed if the pipe or equipment are closer than 2,1 m vertically and 0,8 m
horizontally to walkways and normal working areas. Guards as perforated SS316 plate, or alternatively
insulating coatings, shall be used for normal operating temperatures between 70 °C and 150 °C.
Insulation, as class 1, shall be used for normal operating temperatures above 150 °C.
If perforated guards are used, the length of distance holders shall be according to Table 9.
Table 9 – Length of distance holders
Nominal pipe size (DN)
Normal operating temperature (°C)
70˚C ≤ Tn ≤ 150˚C and Tn˂ -10 °C
DN < 80
DN≥ 80
30 mm
50 mm
Where insulating coating is used, the thickness shall be according to manufacturer documentation and
recommendation.
If insulation is used the insulation thickness shall be calculated in accordance with EN ISO 12241 based
upon project design conditions to secure a surface temperature below 70 ˚C.
7.2.3 Class 5 or F
For class 5 or F insulation, required insulation thickness, and combination of insulating materials, shall
be determined based on relevant fire testing. The following shall be taken into consideration:
 extrapolations of test results are generally not acceptable. New systems or combination of
materials shall be subject to relevant fire tests prior to acceptance. Extrapolation in the section
factor dimension, i.e. material thickness versus surface area, is possible if the calculation model
accounts for heat capacity in test specimen, and proper correlation between calculation model and
tested results can be documented;
 type and duration of fire and explosion scenarios;
 properties of pipe work and vessel material (critical temperatures in piping materials);
 content of pipe work and vessel (critical temperature, operating temperature);
 depressurization time for the exposed system;
 properties of the insulating material.
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For fire scenarios consisting of several fire loads (e.g. jet-fire or hydrocarbon-fire) the most stringent
fire condition shall be used for selecting the fire protection solution. The most stringent fire condition is
defined as that condition where the test specimen experiences the highest temperature rise for its
respective fire load and duration.
For combination of fire loads (e.g. jet-fire and hydrocarbon-fire) the total temperature rise can be
estimated from a transient calculation model under the following circumstances:
 documentation of a proper correlation between calculated temperature and test results for at least
two sampling points for all relevant fire loads;
 heat capacity in insulation materials are accounted for in calculation model;
 calculation model is to be approved by Company.
7.2.4 Class 6, 7 and 8
For acoustic insulation, the insulation thickness shall be according to the system tested.
7.3 Combination of insulation classes
7.3.1 General
The guidelines below are given for insulation systems where insulation shall serve more than one
purpose.
Within the same installation one shall try to limit the number of pipe insulation systems by choosing
alternative that provide combinations of sufficient personnel protection, heat insulation, cold medium
conservation, fire protection and noise insulation when and as required.
7.3.2 Thermal insulation and/or personnel protection combined with fire protection
Use the build-up for fire protection and if necessary increase the thickness of the insulation to fulfil the
requirement for thermal insulation. If the thermal insulation requires vapour barrier, vapour barrier
shall be added.
7.3.3 Thermal insulation and/or personnel protection combined with acoustic
insulation
Use the build-up for acoustic insulation and if necessary increase the thickness of the insulation to fulfil
the requirement for thermal insulation. If the thermal insulation requires vapour barrier, vapour
barrier shall be added.
7.3.4 Fire protection combined with acoustic insulation
The build-up shall fulfil both the requirement for acoustic insulation and fire protection.
7.3.5 Thermal insulation and/or personnel protection combined with fire protection
and acoustic insulation
The build-up shall fulfil both the requirement for acoustic insulation and fire protection. If necessary
increase the thickness of the insulation to fulfil the requirement for thermal insulation. If the thermal
insulation requires vapour barrier, vapour barrier shall be added to the build-up.
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8
Installation and inspection
This section covers general insulation requirements for the different insulation systems. For specific
insulation materials, additional installation requirements are given in applicable Material Data Sheets,
see Annex D.
8.1 General
Piping and equipment shall be insulated according to the insulation classes, normal operating
temperature and insulation thickness defined in the P&ID, piping isometric, data sheets and IPS.
8.1.1 Workmanship
All insulation materials shall be stored in dry areas, and all insulation work shall be performed in dry
conditions.
All surfaces to be insulated shall be clean and dry. For application of sealers, tape and glue/ adhesive all
surfaces shall be clean and dry, and surface temperature shall be min. 3°C above dew point.
The insulation materials and the external cladding shall be installed in such a way that water does not
enter the insulation material or between the insulation and the pipe/equipment surface during design
life.
Insulation on valves shall leave the packing gland accessible, except for class 5 or F where Company
would specify the need for protection. Special attention shall be given for valves with vapour barrier.
Class 5 and F shall be installed such that the fire performance is not affected by the specified design
explosion loads.
If insulation is applied prior to testing of pipe work, welds and joints shall be left un-insulated to allow
inspection during testing. In cases where the insulation may be exposed to weather or dirt/moisture
during this period, the insulation terminations at the joints shall be properly protected with temporary
cladding until the insulation work is finalized.
Insulation shall be installed to allow for inspection, i.e. typical inspection points (tag plates, welds on
doubling plates on vessels etc.).
Discontinued insulation work shall be properly covered to avoid damage and keep the insulation clean
and dry.
8.1.2 Technical requirements
All insulation shall be installed with tightly fitted and staggered joints. Voids within the insulation are
not acceptable.
Sharp edges are not allowed.
8.1.3 Insulation with vapour barrier
Aluminium foils joint overlaps shall be minimum 50 mm. It is of vital importance that the vapour
barrier is smoothly and firmly applied to the insulation such that it forms a fully vapour tight layer.
For insulation class 2, items with complicated shape or areas with poor access, where a proper
application of the aluminium foil used for vapour barrier cannot be obtained, a layer of mastic shall be
applied on the outside of the insulation to ensure tightness of the vapour barrier. The mastic shall
overlap the aluminium foil by at least 50 mm. Type of mastic shall be specified in IPS.
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In order to avoid frost formation or condensation on pipe supports or protrusions/penetration the
following apply:
 insulated prefabricated pipe supports shall be used;
 insulation and vapour barrier shall be extended with minimum length of 3 times insulation
thickness on to the support/protrusion.
8.2 Piping insulation
Insulation joints shall be butted firmly together, and the insulation shall be secured with glass fibre
reinforced tape or stainless-steel band. Insulation shall be secured with bands over the outer layer at
each side of radial joints and at the centre of each section and minimum c-c 250mm.
Insulation on long vertical pipe runs shall be supported with rings spaced on 3 600 mm maximum
centres installed on the piping. Width of rings shall be half the thickness of the insulation material and
min 30 mm. On piping with vapour barrier, insulation covering on rings shall be minimum 2/3 of the
insulation thickness.
The rings shall be fastened to the piping as described in IPS.
8.3 Vessel insulation
8.3.1 Vessel insulation
Insulation of all vessels shall be supported on rings with a distance of 900 mm c/c installed on the
vessel. Rings shall also be provided around nozzles above DN 200 mm. The rings shall be fastened
according to IPS.
Insulation on vessel heads shall be fastened with bands spaced not more than 300 mm c/c. The bands
shall be fixed to the fixing ring installed on the vessel.
8.3.2 Segment insulation of vessel
No adhesive shall be used to bond segment insulation to the vessel.
8.3.2.1 Insulation with vapour barrier
Where required, manholes and handholes shall be provided with removable covers of the same
insulation thickness as the shell insulation. Covers shall be secured to the shell insulation and sealed to
provide vapour tightness.
Joint sealer shall be applied on all segment edges and in accordance with the manufacturer's
recommendations.
Termination of insulation on all layers, including contact surfaces where removable insulation covers
are installed, shall be vapour sealed.
8.4 Cladding
8.4.1 Metallic cladding
All cladding seams shall be installed by "roof tile" principle and the application of joint sealer shall be
inside the cladding.
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Longitudinal seams of metal cladding on horizontal or sloping pipelines shall be located maximum
60 degrees away from the lowest point of the circumference. Longitudinal seams shall be overlapped
30 mm for OD < 150 mm, for OD ≥ 150 mm seams shall be overlapped 50 mm.
Circumferential seams of metal cladding on horizontal or sloping pipelines shall be overlapped
minimum 50 mm. Circumferential seams shall be crimped 50 mm from the edge on one side.
For bends and vessel zeppelin, over and under crimps shall be used in the overlap.
Metallic cladding for vessel insulation shall be edge crimped and overlapped 75 mm on longitudinal and
circumferential seams. For hot insulation with operating temperature above 180 °C, the overlap shall be
100 mm.
Head covers on vessels shall overlap shell covers by 100 mm.
All seams on metallic cladding shall be provided with a sealant in between the overlap.
Cladding shall be terminated with a fold, min 5 mm fold out, and gasket to prevent water ingress and
galvanic corrosion.
For terminations where there is no risk of water ingress (e.g. on the underside of vertically installed
valve/flange boxes), terminations without fold and gaskets are acceptable. However, if the piping is uninsulated, a fold out with gasket is required to protect coated pipe from the 316 cladding of the box.
The gap in the cut outs shall be 5-10 mm before gasket is installed and 3-5 mm after gasket is installed.
Metallic cladding shall be built with a slope on top of vertical vessels and square tanks/containers with
flat roof, min 10° incline.
The bottom heads of skirt-supported vessels may be covered with flat metallic cladding.
Removable insulation covers shall be provided for removable vessels heads.
Metallic cladding shall be fastened with stainless steel bands. Only for difficult details (e.g. bends,
T-pieces etc.) pop rivets or screws may be used.
In cases where pop rivets are used, the rivet holes shall be predrilled prior to installation of cladding. If
pre-drilling is impossible, the length of the drilling bit shall not exceed 6 mm.
On vessel cladding, breather springs shall be used on bands, if required, for expansion.
On vertical vessels and piping, "S" clips, minimum 0,7 mm, shall be used to keep the cladding sheets
from sliding. Minimum four clips per seam.
8.4.2 Non-metallic cladding
Use of combustible non-metallic cladding in enclosed areas shall be subject to written approval by
Company related to HSE aspects.
Application of non-metallic cladding shall be done in accordance with vendor's recommendations.
Terminations against piping with a temperature above the maximum design temperature for the nonmetallic cladding shall be metallic cladding with sufficient length to avoid overheating of the nonmetallic cladding.
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8.4.3 GRP
GRP cladding shall be fastened with stainless steel bands as for metallic cladding.
8.5 Flanges and valves
8.5.1 General
Insulation boxes and jackets mounted more than 2.5 meters above deck levels shall be secured by steel
banding.
Tailor made jackets shall fit the actual valve/flange/equipment and secure minimum 100 mm overlap
to incoming insulated pipe.
Valve and flange boxes in systems with vapour barrier shall be insulated without any air gaps between
object and insulation, and fully sealed with a continuous vapour barrier.
8.5.2 Surface material for jackets
Jacket surface material shall prevent water being absorbed by the insulation material. The material
shall be suitable for use against design temperatures and shall have an adequate wear resistance to
withstand frequent handling and normal tear and wear. It shall be tested for flame spread according to
IMO 2010 FTP Code 5 equal to self-extinguishing properties, and for smoke and toxic gases according to
IMO 2010 FTP Code 2.
The cover, including seams, shall be weather tight according to ISO 9865.
Guidance note:
Materials already tested according to IACS UR S 14.4.4.3 can be accepted if agreed with Company
Precautions shall be implemented in the design and fabrication of the jackets to prevent the insulation
material from sagging causing reduction of the insulation properties.
Jackets for flanges and valves shall be formed such that it sheds water.
8.5.3 Insulation materials for prefabricated boxes
Precautions shall be implemented in the design and fabrication of the prefabricated boxes to prevent
the insulation material from sagging causing reduction of the insulation properties.
All insulation materials shall be totally wrapped in aluminium foil and fastened to the cladding when
used in insulation boxes.
8.5.4 Insulation boxes with vapour barrier
Due to the various shapes and design of valves and flanges, special attention shall be drawn towards the
performance of the insulation work. The build-up of insulation shall be identical to the insulation on
straight pipes. Where a perfect fit between the insulation and the valve is not possible, the void shall be
filled with mineral wool. All cut outs shall be properly sealed and completely airtight.
Insulation boxes shall have a fixed neck fastened to the box and secured around the pipe with band.
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8.5.5 Locking mechanism
The locking mechanism of the tailor-made jackets shall be hook-and loop fastener type, minimum width
50 mm.
The flat fastener type locking mechanism shall be located minimum 10 mm from the outer edge of any
overlaps.
Minimum width of overlap shall be 100 mm longitudinally for jackets applied on valves/flanges larger
than DN 80, and 50 mm for jackets applied on valves/flanges DN 80 and smaller.
Jackets for thermal-/acoustic insulation may be fastened to the pipe with nylon straps or equal, except
in escape route areas where stainless steel bands shall be used. Jackets for fire insulation shall be
secured with stainless steel bands. When steel bands are used for securing the jacket the steel band
shall be protected to avoid cutting into the jackets.
Adjustable and lockable ex-centre locks shall have safe working load of minimum 900 N, and each part
of the lock to be fastened with minimum two pop rivets. Ex-centric locks shall be secured with safety
pin.
8.5.6 Identification
Each removable part of an insulation cover shall be provided with an identification plate in SS316 with
the following information:
 vendor name;
 line number;
 tag number when relevant;
 part number and total number of parts, (e.g. part 1 of 3);
 design requirement (insulation class, fire requirements etc.).
The identification number system shall be easily read prior to and after installation. The font shall be
engraved with black colour and be UV resistant.
The vendor shall identify each cover on drawings and store this information as retain documentation.
If other cladding than SS316 is used, special consideration must be made to avoid galvanic corrosion.
8.6 Non-contact insulation
The spacer system shall ensure an annular gap/void of min 12 mm between the steel surface and the
insulation.
Guidance note:
In selection of material of spacers, both the risk of mechanical damage to the coating system and
heat tracing and galvanic corrosion shall be considered.
The spacers shall be installed according to the installation manual from Manufacturer and approved by
Company.
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8.7 Drainage
For all insulation systems and insulation classes for piping and equipment there shall be minimum 10
mm diameter drain holes in all low points, and a minimum of one hole every 3 m on horizontal runs.
Drain holes shall penetrate the whole insulation system (except for classes with vapour barrier).
Necessary precaution shall be taken to avoid damage to the surface protection on the piping and heat
tracing cables. For classes with vapour barrier, drain holes shall only be in the cladding. The drainage in
class 5 or F shall be of approved type.
For instrument tubing insulated with FEF drain holes are not required.
Tailor made jackets and pre-shaped boxes shall be provided with drainage at its lowest point.
8.8 Instrument insulation
For insulation of instruments, insulation boxes with inspection window should be used.
8.9 Sealing of penetrations
Penetration seals installed, including the materials and method of assembly, shall be equal to detail
drawings referred to in the approval test certificates.
Penetration seals shall be installed in the same orientation as tested. To be installed in both bulkhead
and deck application, the penetration seal shall be tested in both type of divisions and, in addition, for
both single pipe and multiple pipe and cable penetrations.
The minimum and maximum size (length x width, cross sectional area or diameter) shall not exceed the
restrictions specified in the test certificate.
Steel frame (sleeve) may be of carbon steel, galvanized steel or stainless steel regardless of type of steel
used in laboratory test.
Steel frame (sleeve) that was welded to the test assembly shall be welded. When bolted to the test
assembly it may be either bolted or welded.
Penetration seals shall be installed in the same manner and with the same type of insulation on the seal
that was used in the type approval certificate. However, the insulation applied to the bulkhead or deck
being penetrated to make a fire division may be of any approved insulation, which meets the fire
requirements.
Penetration seals that were tested with the sealing located entirely on the exposed/unexposed side
shall be installed in the same way.
Steel frame (sleeve) that was tested symmetrically shall be installed with approximately equal parts on
each side of the division.
8.10 Inspection
Work during production, at delivery and all other pertinent phases, shall be duly inspected and
documented with an inspection log. This log shall be available for the Company.
Personnel carrying out inspection or verification shall have access to workshop and personnel.
Inspection shall be carried out at each stage of the work, but as a minimum before the second layer is
installed, after installation of vapour barrier, plus before and after cladding is applied.
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Annex A
(informative)
Key data for insulation
Insulation class
Insulation materials
Cladding
Material 3),4)
Class 1
Heat conservation
Aerogel, AES fibre,
cellular glass
mineral wool 1)
SS316, aluminium AlMn1,
GRP or non-metallic
(other than GRP)
Class 3
Personnel
protection
At Tn≤ 150ºC Perforated
guards or insulating
coating.
At Tn > 150ºC as class 1.
Where relevant as
class 1.
Class 5 or F
Fire protection
Insulation/fire protection In accordance with the
material in accordance
qualified system
with qualified system.
Class 2
Cold medium
conservation
Class 4
Frost protection
Class 6, 7 and 8
Acoustic
insulation
Class 9
External
condensation and
icing protection
Aerogel
Cellular glass
Other comments
SS316, aluminium AlMn1, Vapour barrier, see 6.4 and 7.1.2.
GRP or non-metallic
(other than GRP)
Aerogel,
cellular glass
mineral wool 1)
SS316, aluminium AlMn1, Vapour barrier, see 6.4 and 7.1.2.
GRP or non-metallic
(other than GRP)
Aerogel, AES fibres,
cellular glass or mineral
wool 1) as per qualified
system
SS316, aluminium AlMn1, Shall be installed in accordance with
GRP or non-metallic
the tested/qualified system
(other than GRP) in
accordance with the
qualified system
Aerogel,
cellular glass
The system selection is dependent on
the actual protection requirement and
shall be accepted in writing by client
for each case.
SS316, aluminium AlMn1, Vapour barrier, see 6.4 and 7.1.2.
GRP or non-metallic
(other than GRP)
Notes
1)
2)
3)
4)
26
At Tn < 180 °C Mineral wool and AES fibres shall only be used as part of a non-contact insulation system, or used as a secondary (outer
layer) insulation material applied over e.g. aerogel or cellular glass.
In dry rooms with no sprinkler/deluge system, mineral wool may be used directly on pipes/vessels with a normal operating
temperature above +40 °C. Indoor areas with regular water cleaning or testing of seawater deluge system are not considered dry.
Use of non-metallic cladding shall be subject to Company approval
Aluzinc, AZ185, cladding material may be used onshore, see 6.3
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Annex B
(normative)
Qualification of new products
B.1
General
This clause lists additional requirements for testing and documentation for qualifying of new products
developed for piping and equipment insulation purposes.
B.2
Testing
B.2.1
Testing of technical properties
All products shall be tested for technical properties by an external third-party institute or accredited
laboratory.
The test shall be relevant and in accordance with insulation classes described in this NORSOK standard.
B.2.2
Life cycle test
All products shall be tested for life cycle properties by an external third-party Institute or accredited
laboratory. Test methods and acceptance criteria shall be agreed with Company. The test shall be
relevant and in accordance with the products strain and stress exposure and in relevance to products
expected life cycle.
B.3
Documentation
The supplier shall prove that the products technical properties (see Table B.1) are in accordance with,
and fulfil, requirements described for insulation classes in this NORSOK standard, or another specific
project requirements.
Table B.1 — Declaration of technical properties
Property
Requirement
Test method
Length
Always declare nom. incl. tolerance
EN 822
Thickness
Always declare nom. incl. tolerance
EN 823
Width
Dimensional stability
Reaction to fire
Maximum ST (+)
Thermal conductivity, λD
Always declare nom. incl. tolerance
Rel. dimensional changes < 1 %
Always declared
Always to be declared
Determined and verified in accordance
with EN ISO 13787
EN 822
EN 1604
EN 13501-1:2007+A1 or
IMO 2010 FTP Code Part 1
EN 14706 / EN 14707
EN 12667, EN 12939 or ISO
8497
Tensile strength parallel to faces
(handling property)
≥ 2 x weight of product
EN 1608
Trace quantities of water soluble
ions and the pH-value
CL: to be declared
pH: neutral to slightly alkaline
EN 13468
Water absorption (Wp)
< 1 kg/m2
EN 1609 / EN 13472
The documentation shall be in written format, i.e. rapport, from an external third-party Institute or
accredited laboratory.
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Annex C
(informative)
Test piece for site test
28
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Annex D
(normative)
Material Data sheets (MDSs)
The materials shall be delivered in accordance with the standard referred to in the MDS’. In addition,
the MDS’ specify the selected options in the referred standard and additional requirements which shall
be added or supersede the corresponding requirements in the referred standard. Provided the MDS’ do
not specify any additional requirements all the requirements of the referred standard apply. The latest
edition of the referred standard shall apply unless a specific year of issue is specified by the purchaser.
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MATERIAL DATA SHEET
MDS AES
Rev. 1
TYPE OF MATERIAL: Alkali Earth Silicate (AES)
General
Products
Application
Standard
This specification describes the minimum requirements for AES materials.
Products shall meet the requirements for bio-soluble fibres in Note Q of Regulation (EC) No.
1272/2008.
AES insulation products are supplied in slabs and blankets.
AES can be used for all classes, except class 2 and 9.
NA
MATERIAL DATA AND PROPERTIES
Thermal conductivity
Shall be measured and declared according to ASTM C-201 or EN 12667 and fulfil the
requirement in the table below.
Thermal conductivity, λD (max value)
temp. °C
λD - W/mk
Reaction to fire
Max. service
temperature
EN 14706
200
0,05
400
0,09
1 kg/m2
Trace quantities of
water soluble CL
EN 13468
< 10 mg/kg
pH-value:
EN 13468
INSTALLATION REQUIREMENTS
General
0,19
1000
0,25
Maximum service temperature, ST (+), shall be declared
EN 1609
EN 13471:2001
0,13
800
Class A1 according to EN 13501-1:2007+A1 or non-combustible
according to IMO 2010 FTP Code Part 1.
If supplied with surface covering the cover shall meet the
requirements according to IMO 2010 FTP Code Part 5.
Short-term water
absorption:
Coefficient of thermal
expansion,
600
TE: < 1 %
Neutral
Installation according to installation manual from Manufacturer and project specific
requirements.
For classes 5, 6, 7 and 8, installation shall be done as described in the relevant test
reports/installation instructions for the qualified systems.
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MATERIAL DATA SHEET
MDS AG
Rev. 1
TYPE OF MATERIAL: Aerogel (AG)
General
This MDS specifies the selected options in the referred standard and additional
requirements which shall be added or supersede the corresponding requirements in the
referred standard.
Products
Blankets
Application
Aerogel can be used for all insulation classes.
Standard
ASTM C1728
MATERIAL DATA AND PROPERTIES
Acceptance criteria
Type I: Grade 1B
Type III: Grade 1A and 2A
Additional
requirements
Reaction to fire: Min Class B-s1, d0 according to EN 13501-1:2007+A1, or non-combustible
according to IMO 2010 FTP Code Part 1.
General
Installation according to installation manual from Manufacturer and project specific
requirements.
Installation requirements
For classes 5, 6, 7 and 8, installation shall be done as described in the relevant test
reports/installation instructions for the qualified systems.
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MATERIAL DATA SHEET
MDS CG
Rev. 1
TYPE OF MATERIAL: Cellular glass (CG)
General
Products
Application
Standard
This MDS specifies the selected options in the referred standard and additional requirements
which shall be added or supersede the corresponding requirements in the referred standard.
Cellular glass insulation products are supplied as prefabricated piping and equipment
elements/sections. The product shall be delivered with anti-abrasive coating if used directly
on piping/equipment.
CG can be used for all insulation classes.
For temperature above +180 °C an outside reinforcement mesh/coating shall be used.
EN 14305
MATERIAL DATA AND PROPERTIES
Thermal conductivity
Ref. EN 14305 Sec. 4.2.1. The following thermal conductivity shall apply:
Thermal conductivity, λD (max value)
Temp. °C
-180 °C -150 °C -120 °C
λD - W/mk 0.020
Reaction to fire
Other requirements
0.022
EN 14305 Sec. 4.2.4.
EN 14305 Sec. 4.3.2
32
0.041
+40 °C
0.046
+80 °C
0.054
+120 °C +180 °C +240 °C
0.061
0.075
0.090
Class A1 according to EN 13501-1:2007+A1, or non-combustible
according to IMO 2010 FTP Code Part 1.
Maximum service temperature, ST (+), shall be declared
Water vapour diffusion resistance: μ ≈ ∞
INSTALLATION REQUIREMENTS
CG with non-metallic
cladding
0.040
+10 °C
EN 14305 Sec. 4.3.11
EN 14305 Sec. C.6
Vessel
0.034
+0 °C
Minimum service temperature, ST (-), shall be declared
EN 14305 Sec. 4.3.12
Piping
0.029
-40 °C
EN 14305 Sec. 4.3.3
EN 14305 Sec. 4.3.10
General
0.025
-80°C
Short term/long term water absorption: Wp and Wlp
Trace quantities of water soluble chlorides (Cl): ≤ 2 mg/kg and
the pH-value shall be neutral to slightly alkaline
Coefficient of thermal expansion/contraction to be declared
Installation according to installation manual from Manufacturer and project specific
requirements.
For classes 5, 6, 7 and 8, installation shall be done as described in the relevant test
reports/installation instructions for the qualified systems.
Anti-abrasive coating shall be used to prevent damage to cellular glass and coating systems.
The anti-abrasive coating shall be completely dry before the insulation material is mounted.
The anti-abrasive coating shall be suitable at maximum operation temperatures.
Amount of wet applied anti-abrasive coating shall be used to effectively ensure sufficiently
smooth surface finish.
CG shall be prefabricated as pipe insulation elements according to dimensions and shape. To
cover fittings and other irregular surfaces, sections may be cut and fitted on site. Min.
thickness up to DN150 shall be 30 mm. Above DN150, min. thickness shall be 40 mm.
CG vessel (DN200) segments shall be mechanically fastened and tightened with metal
bands. For ≤DN150 segments glass fibre reinforced tape shall be used.
Prefabricated CG with factory applied non-metallic cladding shall be joint sealed with
suppliers recommended sealant.
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MATERIAL DATA SHEET
MDS FEF
Rev. 1
TYPE OF MATERIAL: Flexible Elastomeric Foam (FEF)
General
This MDS specifies the selected options in the referred standard and additional
requirements which shall be added or supersede the corresponding requirements in the
referred standard.
Products
Flexible Elastomeric Foam products with or without factory -applied non-metallic cladding
are delivered in prefabricated pipe section, rolls and slabs.
Application
FEF can be used for instrument tubing with diameter DN≤ 32 mm for all insulation classes,
for temperatures ≤ 110 °C.
Standard
EN 14304
MATERIAL DATA AND PROPERTIES
Thermal conductivity
Ref. EN 14304 Sec. 4.2.1. The following thermal conductivity values shall apply:
Thermal conductivity λD (Max value)
Mean temp. °C -50
-30
Reaction to fire
EN 14304 Sec. 4.2.4
FEF Reaction to Fire (RtF) to be declared depending on type of
FEF and factory applied surface covering.
Tubes: DL-s3-d0
Additional
requirements
EN 14304 Sec. 4.3.2
Maximum service temperature ST (+) shall be declared
EN 14304 Sec. 4.3.5
Water vapour diffusion resistance:
λ - W/mK
0.035
EN 14304 Sec. 4.3.3
EN 14304 Sec. 4.3.6
INSTALLATION REQUIREMENTS
General
0.038
-20
0.038
0
0.040
10
0.041
20
0.042
40
0.045
70
0.051
85
0.048
Minimum service temperature ST (-) shall be declared
T ≤ 10 ⁰C: μ > 4000
T > 10 ⁰C: μ > 2000
Trace quantities of water soluble ions (Cl- to be declared) and the
pH-value shall be declared
Installation according to installation manual from Manufacturer and project specific
requirements.
For classes 5, 6, 7 and 8, installation shall be done as described in the relevant test
reports/installation instructions for the qualified systems.
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MATERIAL DATA SHEET
MDS MW
Rev. 1
TYPE OF MATERIAL: Mineral wool (MW)
General
Products
Standard
Application
This MDS specifies the selected options in the referred standard and additional
requirements which shall be added or supersede the corresponding requirements in the
referred standard.
Products shall meet the requirements for bio-soluble fibres in Note Q of Regulation (EC) No.
1272/2008.
Mineral wool products are supplied as mandrel wound pipe sections, wired mats, mats and
slabs.
Wired mats shall be supplied with stainless steel (SS304) stitching wire and mesh.
EN 14303
All insulation classes except class 2 and 9.
At temperatures < 180⁰C MW shall only be used as part of a non-contact insulation system
or used as a secondary (outer layer) insulation material, applied over e.g. cellular glass or
aerogel.
MATERIAL DATA AND PROPERTIES
Thermal conductivity
Ref. EN 14303 Sec. 4.2.1. The following thermal conductivity values shall apply:
Thermal conductivity, λD (max value)
temp. °C
λD - W/mk
10
0.038
50
0.043
100
0.047
150
0.057
200
0.070
300
400
0.100 0.154
Reaction to fire
EN 14303 Sec. 4.2.4
Additional
requirements
EN 14303 Sec. 4.3.2
Maximum service temperature ST (+) shall be declared
EN 14303 Sec. 4.3.7
Trace quantities of water soluble chloride (Cl-) shall be < 10
mg/kg2, and the pH-value shall be neutral to slightly alkaline.
EN 14303 Sec. 4.3.5
INSTALLATION REQUIREMENTS
General
Class A1 according to EN 13501-1:2007+A1 or non-combustible
according to IMO 2010 FTP Code Part 1.
With surface covering: Class A2-s1, d0, according to
EN 13501-1:2007+A1 or according to IMO 2010 FTP Code Part 2
and 5.
Short-term water absorption, Wp
Installation according to installation manual from Manufacturer and project specific
requirements.
For classes 5, 6, 7 and 8, installation shall be done as described in the relevant test
reports/installation instructions for the qualified systems.
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MATERIAL DATA SHEET
MDS GRP
Rev. 1
TYPE OF MATERIAL: Weather resistant glass fibre reinforced polyester (GRP) cladding
General
This specification describes the minimum requirements for a GRP for cladding purposes.
Standard
NA
Products
Application
Laminate based on glass fibre reinforced polyester and/or vinyl ester resins. The material
can be supplied as prefabricated shells or as wet material by curing on site.
GRP is used for external areas subjected to mechanical loads or where a water tight cladding
is required.
MATERIAL DATA AND PROPERTIES
General requirements
Maximum material temperature resistance: ≥ 90⁰C
Layer thickness: ≥ 1,5 mm
ISO 178
Bending strength: ≥ 130 MPa
ISO 527
Elongation at break: ≥ 1 %
ISO 527
Reaction to fire
Aging test
Additional
requirements
General
Notes
1)
Tensile strength: ≥ 50 MPa
Shall meet the requirements for surface flammability and smoke and toxicity according to
IMO 2010 FTP Code Part 2 and Part 5.
Part 5 of this test should be conducted over a relevant insulation substrate in order to
demonstrate system performance.
ISO 12944-9
(cyclic test)
It shall be documented that the material (including system for
joining) will maintain min. 90 % of its tensile strength/elongation
properties after the accelerated aging. The GRP can be tested with or
without a UV durable topcoat.
Depending on design life and risk for direct sunlight exposure, GRP may be required
protected by a UV durable topcoat, with quality in line with topcoat in system 1 (NORSOK
M-501). The coating can be pre-applied to the prefabricated shells or site applied.
GRP shall be antistatic and fulfil the requirements in ISO 80079-36 Annex D (except high
voltage spray electrode test) 1).
Installation according to installation manual from Manufacturer and project specific
requirements.
Material already tested according to EN13463-1 can be accepted if agreed with Company
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MATERIAL DATA SHEET
MDS Polymer-Based Fire
Protection (PBFP)
Rev. 1
TYPE OF MATERIAL: Flexible EVA Polymer
General
Products
Flexible polymer-based fire protection supplied on rolls, sheets, or in extruded/moulded
form
Application
PBFP can be used for insulation Class 5 or F, or any other insulation classes in combination
with Class 5 or F
Standard
NA
MATERIAL DATA AND PROPERTIES
Reaction to fire
A polymer that utilizes endothermic reaction processes to change state from a flexible
polymer in to a micro-porous ceramic state
Flame propagation shall be tested according to EN 60332-1-1. Accept criteria according to
NEK-EN 60332-1-2, Annex A.
Flaming droplets/particles shall be tested according to NEK-EN 60332-1-3. Accept criteria
according to NEK-EN 60332-1-3, Annex A.
Additional
requirements
Maximum continuous service temperature ST (+) shall be declared. For higher continuous
operating temperatures, a thermal layer is required underneath the PBFP in order to
reduce the temperature to ST (+).
Minimum continuous service temperature ST (-) shall be declared. For lower temperatures,
a thermal layer is needed underneath the PBFP in order to increase the temperature to ST
(-).
EN 1609
Below 0,05 for both semi/fully submerged
NES 713
Toxicity Index reading below 1,2
ASTM E662
INSTALLATION REQUIREMENTS
General
Piping
Vessels
36
Above 85%
Installation according to installation manual from Manufacturer and project specific
requirements.
For Class 5 or F, or combined insulation including Class 5 or F, installation shall be done as
described in the relevant test reports/installation manuals for the qualified systems.
SS316 metal cladding shall be used on top of PBFP and fastened with metal banding and
pop rivets, according to tested system.
SS316 metal cladding shall be used on top of PBFP and fastened with metal banding and
pop rivets, according to tested system.
NORSOK © 2018
NORSOK M-004:2018
Bibliography
Standards and norms
[1]
[2]
OTI 95634:1996, Jet-fire resistance test of passive fire protection materials
EN 13463-1:2009, Non-electrical equipment indented for use in potentially explosive
atmospheres
NORSOK © 2018
37
This NORSOK standard is developed with broad petroleum
industry participation by interested parties in the Norwegian
petroleum industry and is owned by the Norwegian petroleum
industry represented by the Norwegian Oil and Gas Association,
the Federation of Norwegian Industries and the Norwegian
Shipowners’ Association.
Please note that whilst every effort has been made to ensure the
accuracy of this NORSOK standard, neither the Norwegian Oil and
Gas Association, the Federation of Norwegian Industries nor the
Norwegian Shipowners’ Association, or any of their members will
assume liability for any use thereof.
Standards Norway is responsible for the administration and
publication of this standard.
Standards Norway
P.O. Box 242
NO-1326 Lysaker
Norway
Standard Online AS
P.O. Box 252
NO-1326 Lysaker
Norway
petroleum@standard.no
salg@standard.no
Tel. +47 67 83 86 00
Tel. +47 67 83 87 00
www.standard.no/petroleum
Visiting address:
Mustads vei 1
NO-0283 Oslo