SIST EN ISO 21329:2005

Petroleum and natural gas industries - Pipeline transportation systems - Test procedures for mechanical connectors (ISO 21329:2004)

ISO 21329:2004 specifies requirements and provides guidance for the testing of mechanical connectors for use in pipeline transportation systems for the petroleum and natural gas industries as defined in ISO 13623.
The tests specified in ISO 21329:2004 are intended to form part of the design verification process for connectors. They provide objective evidence that connectors conform to a defined performance envelope.  
ISO 21329:2004 does not cover the use of design procedures as part of the qualification process for mechanical connectors, nor does it address fabrication and quality control. However, it can be used as input to a qualification procedure.Although its principles can be applied, ISO 21329:2004 does not address a) connectors that are designed to rotate in use, b) manifolds, c) topsides pipework or piping, d) flanges, e) connectors used in pipelines installed by reeling or J-tube pulls, f) factory acceptance testing, g) statistical bases for risk analysis.

Erdöl- und Erdgasindustrie - Rohrleitungstransportsysteme - Prüfverfahren für mechanische Verbindungen (ISO 21329:2004)

Industries du pétrole et du gaz naturel - Systemes de transport par conduites - Modes opératoires d'essai des connecteurs métalliques (ISO 21329:2004)

L'ISO 21329:2004 spécifie des exigences et donne des préconisations pour l'essai des connecteurs mécaniques destinés à être utilisés dans les systèmes de transport par conduites de l'industrie du pétrole et du gaz naturel, tels que définis dans l'ISO 13623.
Les essais spécifiés dans l'ISO 21329:2004  sont destinés à faire partie intégrante du processus de vérification de conception des connecteurs. Ils visent à fournir la preuve objective que les connecteurs sont conformes à une enveloppe de performances définie.
L'ISO 21329:2004 ne couvre ni l'utilisation de procédures de conception dans le cadre du processus de qualification des connecteurs mécaniques, ni le contrôle de fabrication et de qualité. Elle peut toutefois servir de référence pour une procédure de qualification.
Bien qu'il soit possible d'en appliquer les principes, l'ISO 21329:2004 ne couvre pas les éléments suivants:
a)    les connecteurs conçus pour être utilisés en rotation;
b)    les collecteurs;
c)    les canalisations et tuyauteries des superstructures;
d)    les brides;
e)    les connecteurs utilisés dans des conduites installées par bobinage ou par extraction de tubes en J;
f)     les essais de réception en usine;
g)    les bases statistiques d'analyse des risques.

Petroleum and natural gas industries - Pipeline transportation systems - Test procedures for mechanical connectors (ISO 21329:2004)

General Information

• Status: Published
• Publication Date: 28-Feb-2005
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2005
• Due Date: 01-Mar-2005
• Completion Date: 01-Mar-2005
• Ref Project: EN ISO 21329:2004 - Petroleum and natural gas industries - Pipeline transportation systems - Test procedures for mechanical connectors (ISO 21329:2004)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 21329:2005
01-marec-2005
Petroleum and natural gas industries - Pipeline transportation systems - Test
procedures for mechanical connectors (ISO 21329:2004)
Petroleum and natural gas industries - Pipeline transportation systems - Test procedures
for mechanical connectors (ISO 21329:2004)
Erdöl- und Erdgasindustrie - Rohrleitungstransportsysteme - Prüfverfahren für
mechanische Verbindungen (ISO 21329:2004)
Industries du pétrole et du gaz naturel - Systemes de transport par conduites - Modes
opératoires d'essai des connecteurs métalliques (ISO 21329:2004)
Ta slovenski standard je istoveten z: EN ISO 21329:2004
ICS:
75.200 2SUHPD]DVNODGLãþHQMH Petroleum products and
QDIWHQDIWQLKSURL]YRGRYLQ natural gas handling
]HPHOMVNHJDSOLQD equipment
SIST EN ISO 21329:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 21329:2005

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SIST EN ISO 21329:2005
EUROPEAN STANDARD
EN ISO 21329
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2004
ICS 75.200
English version
Petroleum and natural gas industries - Pipeline transportation
systems - Test procedures for mechanical connectors (ISO
21329:2004)
Industries du pétrole et du gaz naturel - Systèmes de Erdöl- und Erdgasindustrie - Rohrleitungstransportsysteme
transport par conduites - Modes opératoires d'essai des - Prüfverfahren für mechanische Verbindungen (ISO
connecteurs métalliques (ISO 21329:2004) 21329:2004)
This European Standard was approved by CEN on 23 September 2004.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21329:2004: E
worldwide for CEN national Members.

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SIST EN ISO 21329:2005

EN ISO 21329:2004 (E)





Foreword


This document (EN ISO 21329:2004) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum and natural gas industries" in
collaboration with Technical Committee CEN/TC 12 "Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries", the secretariat of which is
held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by April 2005, and conflicting national
standards shall be withdrawn at the latest by April 2005.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.


Endorsement notice

The text of ISO 21329:2004 has been approved by CEN as EN ISO 21329:2004 without any
modifications.

2

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SIST EN ISO 21329:2005


INTERNATIONAL ISO
STANDARD 21329
First edition
2004-10-01

Petroleum and natural gas industries —
Pipeline transportation systems — Test
procedures for mechanical connectors
Industries du pétrole et du gaz naturel — Systèmes de transport par
conduites — Modes opératoires d'essai des connecteurs mécaniques




Reference number
ISO 21329:2004(E)
©
ISO 2004

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
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ii © ISO 2004 – All rights reserved

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 2
4 Symbols and abbreviated terms. 4
4.1 Symbols. 4
4.2 Abbreviated terms. 6
5 Test categories. 6
5.1 General. 6
5.2 Pressure, temperature and depth ratings. 7
5.3 Application levels. 7
5.4 Confidence levels. 7
6 Test requirements. 9
6.1 General. 9
6.2 Purpose of tests . 10
6.3 Basis for mechanical loads. 10
6.4 Test-house selection. 11
6.5 Selection of tests and number of test samples .11
6.6 Additional tests. 12
6.7 Prior test results. 12
7 Connector manufacturer requirements. 14
7.1 General. 14
7.2 Quality control. 14
7.3 Connector geometry and performance data . 14
7.4 Selection of diameter. 14
7.5 Setting tolerances. 14
7.6 Connector material requirements . 16
7.7 Preparation of test samples. 17
7.8 Ports. 20
7.9 Replacement test samples. 20
7.10 Test record retention . 20
8 Test-house preparations. 20
8.1 General. 20
8.2 Calibration requirements. 21
8.3 Pressurization media. 22
9 Leak detection. 22
9.1 Leak-detection methods. 22
9.2 Leak-detection sensitivity. 22
9.3 External pressure leak detection. 22
10 Make-and-break testing. 23
10.1 General requirements. 23
10.2 Make-up method. 24
10.3 Repeated make-up and breakout . 26
10.4 Final make-up. 26
10.5 Reverse-torque tests of non-rotational make-up connectors . 26
10.6 Acceptance criteria. 26
© ISO 2004 – All rights reserved iii

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
11 Service-load test.27
11.1 Set-up.27
11.2 Confirmation of seal integrity .29
11.3 Selection of test pressures and temperatures .29
11.4 Installation tests.31
11.5 Hydrostatic pressure tests .33
11.6 Operational unrestrained tests.34
11.7 Operational restrained tests.36
12 Limit-load tests.38
12.1 General.38
12.2 Tension-to-failure test.39
12.3 Compression-to-failure test.40
12.4 Pressure-to-failure test.41
12.5 Bending-to-failure test.41
13 Bending-fatigue test procedures .42
13.1 General.42
13.2 Setting stress ranges for the test .42
13.3 Bending-fatigue test set-up.43
13.4 Bending-fatigue test procedure .43
13.5 Interpretation of fatigue results .44
Annex A (normative) Application levels.45
Annex B (normative) Connector geometry and performance data .48
Annex C (normative) Calculation of connector service loads .51
Annex D (normative) Test data tables .55
Annex E (normative) Connector test reports — Content.63
Annex F (informative) Test sizes and data extrapolation considerations.66
Annex G (informative) Additional testing for special applications.68
Annex H (informative) Additional information on fatigue.76
Bibliography.81

iv © ISO 2004 – All rights reserved

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 21329 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries, Subcommittee SC 2, Pipeline transportation systems.

© ISO 2004 – All rights reserved v

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
Introduction
In some circumstances mechanical connectors provide a lower cost and/or enabling advantage to welded
connectors usually used for pipelines. However, use of mechanical connectors has raised concerns about
pipeline integrity due to the potential for leak paths and absence of a direct method of inspection. In the past,
reassurance of the integrity of mechanical pipeline connectors has relied upon design information provided by
the manufacturer, the results of finite element analysis and past experience.
This International Standard is primarily applicable to connectors to be used in a large number, and hence
there is a significant burden in the number of connectors that need to be tested. However, it is recognized that
the test burden can be reduced in project-specific cases, for example if there is no concern about fatigue, if
the connector will not be subjected to fully restrained forces and/or if the connector design is less sensitive to
accuracy of tolerance matching of components at assembly.
The tests specified in this International Standard provide a physical demonstration of the integrity of the
pipeline connector. This International Standard has been developed from three main sources.
[14]
The first is the Low cost pipeline connector systems joint industry project (JIP), (1995-1997) , which defined
the load envelopes for pipelines, identified the practical issues of installation, and conducted demonstration
physical tests on three types of mechanical connectors.
The second source is ISO 13679, which has a parallel function for downhole connections.
[15]
The third is the Connection testing specification JIP, (1999-2000) . The JIP was sponsored by oil companies,
connector suppliers, pipeline construction contractors and design consultants.

vi © ISO 2004 – All rights reserved

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SIST EN ISO 21329:2005
INTERNATIONAL STANDARD ISO 21329:2004(E)

Petroleum and natural gas industries — Pipeline transportation
systems — Test procedures for mechanical connectors
1 Scope
This International Standard specifies requirements and provides guidance for the testing of mechanical
connectors for use in pipeline transportation systems for the petroleum and natural gas industries as defined
in ISO 13623.
The tests specified in this International Standard are intended to form part of the design verification process
for connectors. They provide objective evidence that connectors conform to a defined performance envelope.
This International Standard does not cover the use of design procedures as part of the qualification process
for mechanical connectors, nor does it address fabrication and quality control. However, it can be used as
input to a qualification procedure.
Although its principles can be applied, this International Standard does not address
a) connectors that are designed to rotate in use,
b) manifolds,
c) topsides pipework or piping,
d) flanges,
e) connectors used in pipelines installed by reeling or J-tube pulls,
f) factory acceptance testing,
g) statistical bases for risk analysis.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 783:1999, Metallic materials — Tensile testing at elevated temperature
ISO 3183-1, Petroleum and natural gas industries — Steel pipe for pipelines — Technical delivery conditions —
Part 1: Pipes of requirement class A
ISO 3183-2, Petroleum and natural gas industries — Steel pipe for pipelines — Technical delivery conditions —
Part 2: Pipes of requirement class B
© ISO 2004 – All rights reserved 1

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
ISO 3183-3, Petroleum and natural gas industries — Steel pipe for pipelines — Technical delivery conditions —
Part 3: Pipes of requirement class C
ISO 6892:1998, Metallic materials — Tensile testing at ambient temperature
ISO 9327, Steel forgings and rolled or forged bars for pressure purposes — Technical delivery conditions
ISO 13623, Petroleum and natural gas industries — Pipeline transportation systems
ISO 13679:2002, Petroleum and natural gas industries — Procedures for testing casing and tubing
connections
EN 10213, Technical delivery conditions for steel castings for pressure purposes
EN 10222-1, Steel forgings for pressure purposes – Part 1: General requirements for open die forgings
1)
ASTM A 370 , Standard Test Methods and Definitions for Mechanical Testing of Steel Products
ASTM A 487/A 487M, Standard Specification for Steel Castings Suitable for Pressure Service
ASTM A 694/A 694M, Standard Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings,
Valves, and Parts for High-Pressure Transmission Service
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply.
3.1
actual yield strength
yield strength of material determined from specimens directly related to components used in construction of
the test samples
3.2
application level
service loading envelope encompassing a group of pipeline and riser applications
3.3
batch
group of items manufactured or machined under controlled conditions to ensure consistent chemical
composition, processing and heat treatment such that the group can be considered as a single population
3.4
by agreement
unless otherwise indicated, agreement between the manufacturer and purchaser at the time of enquiry and
order
NOTE Adapted from ISO 3183-2:1996.
3.5
connector
mechanical device used to connect adjacent components in the pipeline

1) American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, USA
2 © ISO 2004 – All rights reserved

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
3.6
galling
localized damage to material surfaces resulting from contact conditions
NOTE Galling can be caused by cold welding of contacting material surfaces followed by tearing of the weld during
further sliding or rotation.
3.7
heat, noun
batch of steel prepared in one steel-making operation
[ISO 15590-1:2001]
3.8
liner
internal layer of a material different to that of the pipe body
NOTE The liner material may be, for example, plastic or non-ferrous.
3.9
load envelope
limit of loads (axial, pressure, torsion, bending, fatigue and temperature) within which a connector operates
during service or is tested
3.10
manufacturer
organization responsible for the design and manufacture of the equipment
NOTE 1 The manufacturer is not necessarily the vendor.
NOTE 2 Adapted from ISO 13707:2000.
3.11
operational restrained test
simulation of the loads due to operational cycling on a section of pipeline that is fully axially constrained
3.12
operational unrestrained test
simulation of the loads due to operational cycling on a section of pipeline or riser that is not axially constrained
and may have axial tension due to self-weight or externally applied tension
3.13
pipeline
those facilities through which fluids are conveyed, including pipe, pig traps, components and appurtenances
up to and including the isolating valves
[ISO 13623:2000]
3.14
purchaser
individual or organization that issues the order and specification to the vendor
NOTE The purchaser may be the owner or the owner's agent.
[ISO 13707:2000]
3.15
reverse torque
Z
torque applied during tests to simulate loads that might cause the connector to rotate or unscrew, if applicable
© ISO 2004 – All rights reserved 3

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
3.16
riser
that part of an offshore pipeline, including subsea spool pieces, which extends from the seabed to the pipeline
termination on an offshore installation
[ISO 13623:2000]
3.17
seal
barrier that resists the passage of fluids
[ISO 13678:2000]
3.18
multiple seals
sealing system that consists of more than one independent barrier and of which each barrier forms a seal
itself
3.19
specified minimum yield strength
minimum yield strength required by the specification or standard under which the material is purchased
[ISO 13623:2000]
3.20
test sample
assembly of a connector and two pieces of pipe specifically for testing
4 Symbols and abbreviated terms
4.1 Symbols
A operational unrestrained axial factor
F,un
A specified cross-sectional area of pipe
s
B bending factor for hydrostatic pressure test
F,hy
B bending factor for installation
F,in
B bending factor for unrestrained operation tests
F,un
D specified pipe inside diameter
i
D specified pipe outside diameter
o
E Young’s modulus of pipe
p
F axial force for restrained operation
re
F axial force for unrestrained operation
un
f von Mises' factor
vM
H depth rating
r
K load multiplication factor
4 © ISO 2004 – All rights reserved

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SIST EN ISO 21329:2005
ISO 21329:2004(E)
K torque factor
F
K  ratio of actual to specified minimum yield stress of the critical connector component material
cc
K  ratio of actual to specified minimum yield stress of the pipe body material
p
K stress concentration factor
SCF
L length of test sample between inner supports
L grip length of pipe
g
L unsupported pipe length for test sample
p
L length between scribe mark and coupling on test sample
s
M bending moment for installation
in
M bending moment for hydrostatic pressure test
hy
M bending moment for unrestrained operation
un
N total number of cycles
c
p design pressure
d
p external hydrostatic pressure
ex
p internal pressure value to be used for testing
H
p operating pressure based on MAOP at the connector
op
p
r manufacturer's rated pressure
p hydrostatic test pressure
t
S lowest fatigue stress range
L
S middle fatigue stress range
M
S highest fatigue stress range
H
S
...