Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 8: Welding of tubes to tube-plate joints (ISO 15614-8:2016)

ISO 15614-8:2016 specifies requirements for the qualification testing of welding procedures for the arc welding of tube to tube-plate joints in metallic materials by manual, partly mechanized, fully mechanized, or automatic processes.
ISO 15614-8:2016 is a part of a series of standards. Details of this series are given in ISO 15607, Annex A.
Qualification by tube to tube-plate joint tests can be used for all joints even if they are fully loaded or only seal welded as required in application standards.
ISO 15614-8:2016 applies to fusion welding of metallic materials for tube to tube-plate joints with a remaining gap between the tube and the tube-plate for some length of the tube-plate thickness. This part of ISO 15614 does not apply to tube-sheets with forged end connections with welded tubes (external/internal bore welds).
For welding of tube to tube-plate joints with mechanical expansion which is load bearing, welding procedure test is to be defined.
For other applications and/or requirements, this part of ISO 15614 can be used if required by the specification.
Repair welding is to be considered in the welding procedure test.

Anforderung und Qualifizierung von Schweißverfahren für metallische Werkstoffe - Schweißverfahrensprüfung - Teil 8: Einschweißen von Rohren in Rohrböden (ISO 15614-8:2016)

Dieser Teil der ISO 15614 legt die Anforderungen für die Qualifizierung von Schweißverfahrensprüfungen für das Lichtbogenschweißen metallischer Werkstoffe für die Verbindungen von Rohren in Rohrböden durch manuelle, mechanisierte oder automatische Verfahren fest.
Dieser Teil der ISO 15614 ist Teil einer Normenreihe. Einzelheiten dieser Normenreihe sind in ISO 15607, Anhang A, enthalten.
Die Qualifizierung von Prüfungen für die Verbindungen von Rohren in Rohrböden kann entsprechend der Anwendungsnorm für solche, die voll zu belasten oder nur dicht zu schweißen sind, erteilt werden.
Dieser Teil der ISO 15614 ist für das Schmelzschweißen metallischer Werkstoffe für Rohre in Rohrböden anzuwenden, wenn zwischen diesen ein Spalt besteht. Dieser Teil der ISO 15614 ist nicht für Rohrböden mit gegossenen Endstücken zur Verbindung mit geschweißten Rohren (Außen-/Innenbohrschweißungen) anzuwenden.
Für das Schweißen von Rohren in Rohrböden unter mechanischer Vorspannung sollte die aufgebrachte Last in der Schweißverfahrensprüfung definiert sein.
Für andere Anwendungen und/oder Anforderungen kann dieser Teil der ISO 15614 angewendet werden, wenn sie in der Spezifikation gefordert wird.
Reparaturschweißungen werden in der Schweißverfahrensprüfung berücksichtigt.

Descriptif et qualification d'un mode opératoire de soudage sur les matériaux métalliques - Épreuve de qualification d'un mode opératoire de soudage - Partie 8: Soudage de tubes sur plaques tubulaires (ISO 15614-8:2016)

L'ISO 15614-8:2016 spécifie les exigences pour l'épreuve de qualification de modes opératoires pour le soudage à l'arc d'assemblages de tubes sur plaque tubulaire en matériaux métalliques avec des procédés manuels, semi-automatique, automatiques ou entièrement automatique.
L'ISO 15614-8:2016 fait partie d'une série de normes. Les détails sur cette série de normes sont donnés dans l'ISO 15607, Annexe A.
La qualification par des épreuves pour assemblages de tubes sur plaque tubulaire peut être utilisée pour tous les assemblages, même si ces derniers sont entièrement soumis à une charge ou s'ils comportent seulement des soudures d'étanchéité comme l'exigent les normes d'application.
L'ISO 15614-8:2016 s'applique au soudage par fusion des matériaux métalliques pour les assemblages de tubes sur plaque tubulaire avec jeu subsistant après soudage entre le tube et la plaque tubulaire sur une certaine longueur de l'épaisseur de la plaque tubulaire. L'ISO 15614-8:2016 ne s'applique pas aux assemblages tubes sur plaque avec raccordements forgés sur des tubes soudés (soudures sur alésage intérieur/extérieur).
Pour la réalisation d'assemblages de tubes sur plaque tubulaire suivis d'une expansion mécanique résistante de tube, l'épreuve de qualification du mode opératoire de soudage doit être définie.
Pour d'autres applications et d'autres exigences, l'ISO 15614-8:2016 peut être utilisée si cela est prévu dans la spécification.
La réparation par soudage doit être incluse dans l'épreuve de qualification du mode opératoire de soudage.

Specifikacija in kvalifikacija varilnih postopkov za kovinske materiale - Preskus varilnega postopka - 8. del: Varjenje cevi na cevne plošče (ISO 15614-8:2016)

Ta del standarda ISO 15614 določa zahteve za kvalifikacijsko preskušanje varilnih postopkov za obločno varjenje cevi na cevne plošče v kovinskih materialih z ročnimi, delno mehaniziranimi, v celoti mehaniziranimi ali samodejnimi postopki.
Ta del standarda ISO 15614 je del skupine standardov. Podrobnosti o tej skupini so podane v standardu ISO 15607,
dodatek A.
Kvalifikacija s preskusi varjenja cevi na cevne plošče se lahko uporablja za vse spoje, tudi če so polno obremenjeni ali samo zatesnjeni, kot to zahtevajo standardi za vrsto uporabe.
Ta del standarda ISO 15614 se uporablja za talilno varjenje cevi na cevne plošče v kovinskih materialih,
pri čemer je med cevjo in cevno ploščo prostor za nekaj dolžine debeline cevne plošče.
Ta del standarda ISO 15614 se ne uporablja za cevne stene s kovanimi zaključnimi povezavami z varjenimi cevmi
(zvari z zunanjo/notranjo izvrtino).
Za varjenje cevi na cevne plošče z mehansko razširitvijo, ki je nosilna, je treba
določiti preskus postopka. Za druge vrste uporabe in/ali zahteve se lahko ta del standarda ISO 15614 uporablja, če to zahteva specifikacija. Pri preskusu postopka varjenja je treba upoštevati reparaturno varjenje.

General Information

Status
Published
Publication Date
05-Apr-2016
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
06-Apr-2016
Completion Date
06-Apr-2016

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SLOVENSKI STANDARD
SIST EN ISO 15614-8:2016
01-julij-2016
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SIST EN ISO 15614-8:2003

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Specification and qualification of welding procedures for metallic materials - Welding

procedure test - Part 8: Welding of tubes to tube-plate joints (ISO 15614-8:2016)

Anforderung und Qualifizierung von Schweißverfahren für metallische Werkstoffe -

Schweißverfahrensprüfung - Teil 8: Einschweißen von Rohren in Rohrböden (ISO 15614

-8:2016)

Descriptif et qualification d'un mode opératoire de soudage sur les matériaux métalliques

- Épreuve de qualification d'un mode opératoire de soudage - Partie 8: Soudage de

tubes sur plaques tubulaires (ISO 15614-8:2016)
Ta slovenski standard je istoveten z: EN ISO 15614-8:2016
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
SIST EN ISO 15614-8:2016 en,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 15614-8:2016
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SIST EN ISO 15614-8:2016
EN ISO 15614-8
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2016
EUROPÄISCHE NORM
ICS 25.160.10 Supersedes EN ISO 15614-8:2002
English Version
Specification and qualification of welding procedures for
metallic materials - Welding procedure test - Part 8:
Welding of tubes to tube-plate joints (ISO 15614-8:2016)

Descriptif et qualification d'un mode opératoire de Anforderung und Qualifizierung von Schweißverfahren

soudage sur les matériaux métalliques - Épreuve de für metallische Werkstoffe -

qualification d'un mode opératoire de soudage - Partie Schweißverfahrensprüfung - Teil 8: Einschweißen von

8: Soudage de tubes sur plaques tubulaires (ISO 15614- Rohren in Rohrböden (ISO 15614-8:2016)

8:2016)
This European Standard was approved by CEN on 2 January 2016.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15614-8:2016 E

worldwide for CEN national Members.
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SIST EN ISO 15614-8:2016
EN ISO 15614-8:2016 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 97/23/EC — Pressure Equipment ............................................... 4

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SIST EN ISO 15614-8:2016
EN ISO 15614-8:2016 (E)
European foreword

This document (EN ISO 15614-8:2016) has been prepared by Technical Committee ISO/TC 44 "Welding

and allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat

of which is held by DIN.

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 October 2016, and conflicting national standards shall

be withdrawn at the latest by October 2016.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent

rights.
This document supersedes EN ISO 15614-8:2002.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this

document.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,

Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,

Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,

Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 15614-8:2016 has been approved by CEN as EN ISO 15614-8:2016 without any

modification.
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SIST EN ISO 15614-8:2016
EN ISO 15614-8:2016 (E)
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 97/23/EC — Pressure Equipment

This European Standard has been prepared under a mandate given to CEN by the European

Commission and the European Free Trade Association to provide a means of conforming to Essential

Requirements of the New Approach Directive 97/23/EC.

Once this standard is cited in the Official Journal of the European Union under that Directive and has

been implemented as a national standard in at least one Member State, compliance with the clauses of

this standard given in Table ZA confers, within the limits of the scope of this standard, a presumption of

conformity with the corresponding Essential Requirements of that Directive and associated EFTA

regulations.
Table ZA — Correspondence between this European Standard and Directive 97/23/EC

Clause(s)/subclause(s) of this EN Essential Requirements (ERs) of Qualifying remarks/Notes

Directive 97/23/EC
Clauses 5, 6, 7, 8, 9 Annex I, 3.1.2 Permanent joining

WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling

within the scope of this part of ISO 15614.
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SIST EN ISO 15614-8:2016
INTERNATIONAL ISO
STANDARD 15614-8
Second edition
2016-03-01
Specification and qualification of
welding procedures for metallic
materials — Welding procedure test —
Part 8:
Welding of tubes to tube-plate joints
Descriptif et qualification d’un mode opératoire de soudage sur
les matériaux métalliques — Épreuve de qualification d’un mode
opératoire de soudage —
Partie 8: Soudage de tubes sur plaques tubulaires
Reference number
ISO 15614-8:2016(E)
ISO 2016
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ..............................................................................................................................................................................................................................vii

1 Scope .................................................................................................................................................................................................................................1

2 Normative references ......................................................................................................................................................................................1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Symbols and abbreviated terms ........................................................................................................................................................... 2

5 Preliminary welding procedure specification (pWPS) .................................................................................................3

5.1 General ........................................................................................................................................................................................................... 3

5.2 Parameters for all welding process ....................................................................................................................................... 3

5.3 Parameters for particular welding processes .............................................................................................................. 4

6 Qualification of welding procedure ..................................................................................................................................................5

7 Welding of test pieces ......................................................................................................................................................................................5

7.1 General ........................................................................................................................................................................................................... 5

7.2 Type of test piece .................................................................................................................................................................................. 5

7.2.1 Joint preparation and joint construction .................................................................................................... 5

7.2.2 Tube ends welded on triangular pitch .......................................................................................................... 5

7.2.3 Tube ends welded on square pitch .................................................................................................................. 6

8 Examination and testing ...............................................................................................................................................................................7

8.1 Performance .............................................................................................................................................................................................. 7

8.1.1 General...................................................................................................................................................................................... 7

8.1.2 Visual testing ....................................................................................................................................................................... 7

8.1.3 Penetrant testing ............................................................................................................................................................. 8

8.1.4 Radiographic testing ..................................................................................................................................................... 8

8.1.5 Macroscopic examination ........................................................................................................................................ 8

8.1.6 Hardness test ...................................................................................................................................................................... 8

8.1.7 Push-out or pull-out test ........................................................................................................................................... 8

8.2 Acceptance levels .................................................................................................................................................................................. 9

8.2.1 General...................................................................................................................................................................................... 9

8.2.2 Visual testing ....................................................................................................................................................................... 9

8.2.3 Penetrant testing ............................................................................................................................................................. 9

8.2.4 Radiographic testing ..................................................................................................................................................... 9

8.2.5 Macroscopic examination .....................................................................................................................................10

8.2.6 Hardness values .............................................................................................................................................................10

8.2.7 Push-out or pull-out load ......................................................................................................................................10

8.3 Re-test ..........................................................................................................................................................................................................10

9 Range of qualification ..................................................................................................................................................................................11

9.1 General ........................................................................................................................................................................................................11

9.2 Related to the manufacturer ....................................................................................................................................................11

9.3 Related to the material ..................................................................................................................................................................11

9.3.1 Parent metal ......................................................................................................................................................................11

9.3.2 Tube-plate and tube dimensions ....................................................................................................................11

9.3.3 Tube pitch ...........................................................................................................................................................................11

9.4 Common to all welding procedures ...................................................................................................................................11

9.4.1 Welding process ............................................................................................................................................................11

9.4.2 Welding position of tube-plate .........................................................................................................................11

9.4.3 Type of joint ......................................................................................................................................................................11

9.4.4 Filler metal, classification .....................................................................................................................................12

9.4.5 Filler metal, dimensions .........................................................................................................................................12

9.4.6 Type of current ...............................................................................................................................................................12

9.4.7 Arc energy (heat input) ...........................................................................................................................................12

9.4.8 Pre-heat temperature ...............................................................................................................................................12

© ISO 2016 – All rights reserved iii
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)

9.4.9 Interpass temperature .............................................................................................................................................12

9.4.10 Post-weld heat treatment ......................................................................................................................................12

9.4.11 Shielding gas .....................................................................................................................................................................12

10 Welding procedure qualification record form (WPQR) ............................................................................................12

Annex A (informative) Welding procedure qualification record form for tube to tube-plate

joints (WPQR) .......................................................................................................................................................................................................14

Bibliography .............................................................................................................................................................................................................................18

iv © ISO 2016 – All rights reserved
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee

SC 10, Quality management in the field of welding.

This second edition cancels and replaces the first edition (ISO 15614-8:2002), which has been

technically revised.

ISO 15614 consists of the following parts, under the general title Specification and qualification of

welding procedures for metallic materials — Welding procedure test:

— Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys

— Part 2: Arc welding of aluminium and its alloys
— Part 3: Fusion welding of non-alloyed and low-alloyed cast irons
— Part 4: Finishing welding of aluminium castings
— Part 5: Arc welding of titanium, zirconium and their alloys
— Part 6: Arc and gas welding of copper and its alloys
— Part 7: Overlay welding
— Part 8: Welding of tubes to tube-plate joints
— Part 9: Underwater hyperbaric wet welding
— Part 10: Hyperbaric dry welding
— Part 11: Electron and laser beam welding
— Part 12: Spot, seam and projection welding
— Part 13: Upset (resistance butt) and flash welding
© ISO 2016 – All rights reserved v
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)
— Part 14: Laser-arc hybrid welding of steels, nickel and nickel alloys

Requests for official interpretations of any aspect of this International Standard should be directed to

the Secretariat of ISO/TC 44/SC 10 via your national standards body. A complete listing of these bodies

can be found at www.iso.org.
vi © ISO 2016 – All rights reserved
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)
Introduction

All new welding procedure tests are to be carried out in accordance with this part of ISO 15614 from

the date of its issue. However, this part of ISO 15614 does not invalidate previous welding procedure

tests made to former national standards or specifications or previous issues of this part of ISO 15614.

© ISO 2016 – All rights reserved vii
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SIST EN ISO 15614-8:2016
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SIST EN ISO 15614-8:2016
INTERNATIONAL STANDARD ISO 15614-8:2016(E)
Specification and qualification of welding procedures for
metallic materials — Welding procedure test —
Part 8:
Welding of tubes to tube-plate joints
1 Scope

This part of ISO 15614 specifies requirements for the qualification testing of welding procedures for

the arc welding of tube to tube-plate joints in metallic materials by manual, partly mechanized, fully

mechanized, or automatic processes.

This part of ISO 15614 is a part of a series of standards. Details of this series are given in ISO 15607,

Annex A.

Qualification by tube to tube-plate joint tests can be used for all joints even if they are fully loaded or

only seal welded as required in application standards.

This part of ISO 15614 applies to fusion welding of metallic materials for tube to tube-plate joints

with a remaining gap between the tube and the tube-plate for some length of the tube-plate thickness.

This part of ISO 15614 does not apply to tube-sheets with forged end connections with welded tubes

(external/internal bore welds).

For welding of tube to tube-plate joints with mechanical expansion which is load bearing, welding

procedure test is to be defined.

For other applications and/or requirements, this part of ISO 15614 can be used if required by the

specification.
Repair welding is to be considered in the welding procedure test.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 3452-1, Non-destructive testing — Penetrant testing — Part 1: General principles

ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers

ISO 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic

materials — Part 1: Fusion welding

ISO 9015-1, Destructive tests on welds in metallic materials — Hardness testing — Part 1: Hardness test on

arc welded joints
ISO 9606-1, Qualification testing of welders — Fusion welding — Part 1: Steels

ISO 9606-2, Qualification test of welders — Fusion welding — Part 2: Aluminium and aluminium alloys

ISO 9606-3, Approval testing of welders — Fusion welding — Part 3: Copper and copper alloys

ISO 9606-4, Approval testing of welders — Fusion welding — Part 4: Nickel and nickel alloys

© ISO 2016 – All rights reserved 1
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)

ISO 9606-5, Approval testing of welders — Fusion welding — Part 5: Titanium and titanium alloys,

zirconium and zirconium alloys

ISO 9692-1, Welding and allied processes — Types of joint preparation — Part 1: Manual metal arc welding,

gas-shielded metal arc welding, gas welding, TIG welding and beam welding of steels

ISO 14175, Welding consumables — Gases and gas mixtures for fusion welding and allied processes

ISO 14732, Welding personnel — Qualification testing of welding operators and weld setters for mechanized

and automatic welding of metallic materials

ISO 15607:2003, Specification and qualification of welding procedures for metallic materials — General rules

ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding

procedure specification — Part 1: Arc welding

ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding

procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys

ISO 17636-1, Non-destructive testing of welds — Radiographic testing — Part 1: X- and gamma-ray

techniques with film

ISO 17637, Non-destructive testing of welds — Visual testing of fusion-welded joints

ISO 17639, Destructive tests on welds in metallic materials — Macroscopic and microscopic examination

of welds
ISO/TR 15608, Welding — Guidelines for a metallic materials grouping system
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 15607 apply.

4 Symbols and abbreviated terms

a throat thickness (mm) (in this case, the minimal distance between root point and weld

surface)
b width of the weld reinforcement (mm)
d pore size (mm)
d tube-outside diameter (mm)
d minimum distance between two pipes (mm)
g gap between tube and tube plate (mm)
h height or width of imperfection (mm)
s starting point of the root run
t tube-wall thickness (mm)
t cladding thickness (mm)
t tube-plate thickness (mm)
x overlap (mm)
2 © ISO 2016 – All rights reserved
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)
Figure 1 — Presentation of symbols in an example
5 Preliminary welding procedure specification (pWPS)
5.1 General

The qualification for tube to tube-plate welding tests shall be based on a pWPS in accordance with

ISO 15609-1. It shall specify the relevant parameters listed in 5.2 and 5.3.
5.2 Parameters for all welding process

Details relating to the following parameters shall be recorded for all welding processes:

a) welding process, or processes, when more than one is used in making a complete joint;

b) tube-plate specification and thickness and details of any cladding and its thickness;

c) tube specification, thickness, and outside diameter;
d) pitch type (square or triangular) and distance between pipes;
e) joint geometry, actual borehole, diameter and fit-up tolerances (sketch);
f) cleaning and degreasing (time during the fabrication steps and type);
g) jigging or tacking, tacking position, and expansion (before welding);
h) tube-plate and welding position;
i) type and/or trade name of welding consumables;
j) size (diameter) and wire feed speed or rate of wire addition per run;
k) pre-heating and interpass temperature, including method of control;
l) if necessary, travel speed;

m) number and arrangement of runs, starting points of runs, and weld dimensions (sketch);

n) welding sequence;
o) post-weld heat treatment, including method of control;
© ISO 2016 – All rights reserved 3
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SIST EN ISO 15614-8:2016
ISO 15614-8:2016(E)
...

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