SIST EN ISO 15618-1:2003
(Main)Qualification testing of welders for under-water welding - Part 1: Diver-welders for hyperbaric wet welding (ISO 15618-1:2001)
Qualification testing of welders for under-water welding - Part 1: Diver-welders for hyperbaric wet welding (ISO 15618-1:2001)
This standard applies to welding processes where the skill of the diver-welder has a significant influence on weld
quality.
This standard specifies essential requirements, ranges of approval, test conditions, acceptance requirements and
certification for the approval testing of diver-welder performance for the welding of steels underwater in hyperbaric
wet environment. The recommended format for the certificate of approval testing is given in Annex A.
During the approval test the diver-welder should be required to show adequate practical experience and job
knowledge (test non mandatory) of the welding processes, materials and safety requirements for which he is to be
approved, information on these aspects is given in Annex B.
This standard is applicable when the diver-welder's testing is required by the purchaser, by inspection authorities or
by other organisations.
The welding processes referred to in this standard include those fusion welding processes which are designated as
manual or partly mechanised welding. It does not cover fully mechanised and fully automatic processes (see 5.2).
All new approvals should be in accordance with this standard from the date of this issue.
However, this standard does not invalidate previous diver-welder approvals made to former national standards or
specifications, providing the intent of the technical requirements is satisfied and the previous approvals are relevant
to the application and production work on which they are employed.
Also, where additional tests should be carried out to make the approval technically equivalent it is only necessary
to do the additional tests on a test piece which should be made in accordance with this standard.
Prüfung von Schweißern für Unterwasserschweißen - Teil 1: Unterwasserschweißer für Nassschweißen unter Überdruck (ISO 15618-1:2001)
Diese Norm ist für Schweißprozesse anzuwenden, bei denen das Können des Unterwasserschweißers einen
entscheidenden Einfluss auf die Qualität der Schweißung hat.
Diese Norm legt die wesentlichen Anforderungen, Geltungsbereiche, Prüfbedingungen, Bewertungsanforderungen
und Bescheinigungen über die Prüfung zur Anerkennung des Unterwasserschweißers für Stahlschweißungen unter
Wasser in einer nassen Überdruckumgebung fest. Im Anhang A ist der empfohlene Vordruck für die Prüfungs-
bescheinigung zur Anerkennung wiedergegeben.
Bei der Prüfung zur Anerkennung des Unterwasserschweißes sollte der Nachweis gefordert werden, dass er
angemessene praktische Erfahrungen und Fachkenntnisse (Prüfung nicht obligatorisch) hinsichtlich der Schweiß-
prozesse, Werkstoffe und Sicherheitsanforderungen hat, für die er anerkannt werden soll; Hinweise dafür sind im
Anhang B enthalten.
Diese Norm ist anzuwenden, wenn eine Prüfung des Unterwasserschweißers vom Kunden, durch Abnahmeorganisa-
tionen oder von sonstigen Stellen gefordert wird.
Diese Norm bezieht sich auf solche Schmelzschweißprozesse, die vom Unterwasserschweißer von Hand oder
teilmechanisch ausgeführt werden, vollmechanische und vollautomatische Prozesse werden in dieser Norm nicht
berücksichtigt (siehe 5.2).
Alle neuen Anerkennungen sollten vom Tag der Veröffentlichung dieser Norm mit ihr übereinstimmen.
Diese Norm setzt jedoch bestehende Anerkennungen von Unterwasserschweißern, die nach früheren nationalen
Normen oder Vorschriften abgelegt worden sind, nicht außer Kraft, vorausgesetzt, die technischen Anforderungen
sind erfüllt und die früheren Prüfungen entsprechen der Anwendung und der Fertigung, in der sie eingesetzt werden.
Epreuve de qualification des soudeurs pour le soudage sous l'eau - Partie 1: Scaphandriers soudeurs pour le soudage hyperbare en pleine eau (ISO 15618-1:2001)
La présente norme s'applique a des procédés de soudage pour lesquels l'habileté manuelle du scaphandrier soudeur a une influence déterminante sur la qualité de l'assemblage.
La présente norme spécifie les principales exigences a respecter, les domaines de validité, les conditions d'essais, les exigences d'acceptation et de notification des résultats de l'épreuve de qualification pour la mise en ?uvre du soudage sous l'eau des aciers par des scaphandriers soudeurs dans un environnement hyperbare en pleine eau. Le modele recommandé pour le certificat d'épreuve de qualification est donné dans l'Annexe A.
Pendant l'épreuve de qualification, il convient de demander au scaphandrier soudeur de faire preuve de son expérience pratique et de sa compétence technologique (épreuve non obligatoire) portant sur les procédés de soudage, les matériaux et les exigences de sécurité applicables a la qualification en cours, des informations sur ces points sont données dans l'Annexe B.
La présente norme est applicable dans le cas ou la qualification du scaphandrier soudeur est exigée par le client, par l'organisme d'inspection ou par une autre instance.
Les procédés de soudage concernés par la présente norme sont les procédés de soudage par fusion, manuels ou semi-automatiques. La présente norme ne s'applique pas aux procédés totalement mécanisés ou automatiques (voir 5.2).
Il convient que toute nouvelle qualification soit conforme a la présente norme des parution de celle-ci.
Preskušanje varilcev za podvodno varjenje - 1. del: Podvodni varilci za mokro varjenje v vodi pod povišanim tlakom (ISO 15618-1:2001)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 15618-1:2003
01-maj-2003
Preskušanje varilcev za podvodno varjenje - 1. del: Podvodni varilci za mokro
varjenje v vodi pod povišanim tlakom (ISO 15618-1:2001)
Qualification testing of welders for under-water welding - Part 1: Diver-welders for
hyperbaric wet welding (ISO 15618-1:2001)
Prüfung von Schweißern für Unterwasserschweißen - Teil 1: Unterwasserschweißer für
Nassschweißen unter Überdruck (ISO 15618-1:2001)
Epreuve de qualification des soudeurs pour le soudage sous l'eau - Partie 1:
Scaphandriers soudeurs pour le soudage hyperbare en pleine eau (ISO 15618-1:2001)
Ta slovenski standard je istoveten z: EN ISO 15618-1:2001
ICS:
03.100.30 Vodenje ljudi Management of human
resources
25.160.10 Varilni postopki in varjenje Welding processes
SIST EN ISO 15618-1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 15618-1:2003
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SIST EN ISO 15618-1:2003
EUROPEAN STANDARD
EN ISO 15618-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2001
ICS 25.160.01
English version
Qualification testing of welders for under-water welding - Part 1:
Diver-welders for hyperbaric wet welding (ISO 15618-1:2001)
Epreuve de qualification des soudeurs pour le soudage Prüfung von Schweißern für Unterwasserschweißen - Teil
sous l'eau - Partie 1: Scaphandriers soudeurs pour le 1: Unterwasserschweißer für Nassschweißen unter
soudage hyperbare en pleine eau (ISO 15618-1:2001) Überdruck (ISO 15618-1:2001)
This European Standard was approved by CEN on 14 August 2000.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15618-1:2001 E
worldwide for CEN national Members.
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Contents
Page
Foreword . 3
Introduction . 4
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 6
4 Symbols and abbreviations . 6
4.1 General . 6
4.2 Test piece . 6
4.3 Consumable . 6
4.4 Miscellaneous . 6
5 Essential variables for approval testing . 6
5.1 General . 6
5.2 Welding processes . 6
5.3 Joint types (butt and fillet welds) . 7
5.4 Material groups . 7
5.5 Consumables . 7
5.6 Dimensions . 7
5.7 Welding positions . 8
5.8 Hyperbaric environment . 8
6 Range of approval . 8
6.1 General . 8
6.2 Welding process . 8
6.3 Joint types . 8
6.4 Material groups . 8
6.5 Consumables . 9
6.6 Dimensions . 9
6.7 Welding positions . 9
6.8 Hyperbaric environment . 10
7 Examination and testing . 11
7.1 General . 11
7.2 Supervi si on . 11
7.3 Shapes and dimensions of test pieces . 11
7.4 Welding conditions . 16
7.5 Test methods . 16
7.6 Test pieces and test specimens . 17
8 Acceptance requirements for test pieces . 21
9 Re-tests . 22
10 Period of validity . 22
10.1 Initial approval . 22
10.2 Prol ongati on . 22
11 Certificate . 22
12 Designation . 23
Annex A (informative) Diver-welder approval test certificate for hyperbaric wet welding . 24
Annex B (informative) Job knowledge . 26
2
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Foreword
The text of EN ISO 15618-1:2001 has been prepared by Technical Committee CEN/TC 121 "Welding", the
secretariat of which is held by DS, in collaboration with Technical Committee ISO/TC 44 "Welding and allied
processes".
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 June 2002, and conflicting national standards shall be withdrawn at the latest by
June 2002.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland and the United Kingdom.
3
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Introduction
This standard covers the principles to be observed in the approval testing of diver-welder performance for the fusion
welding of steels in a hyperbaric wet environment.
The ability of the diver-welder to follow verbal or written instructions and testing of his skill are therefore important
factors in ensuring the quality of the welded product.
Testing of skill to this standard depends on welding methods in which uniform rules and test conditions are complied
with, and standard test pieces are used.
This standard is intended to provide the basis for the mutual recognition by examining bodies for approval relating
to the diver-welder's competence in the various fields of application. Tests should be carried out in accordance with
this standard unless additional tests are specified by the relevant application standard when these should be applied.
The test weld can be used to approve a welding procedure and the diver-welder provided that all the relevant
requirements, e.g. test piece dimensions, are satisfied.
The diver-welder's skill and job knowledge continue to be approved only if the diver-welder is working with
reasonable continuity on welding work within the extent of approval.
1 Scope
This standard applies to welding processes where the skill of the diver-welder has a significant influence on weld
quality.
This standard specifies essential requirements, ranges of approval, test conditions, acceptance requirements and
certification for the approval testing of diver-welder performance for the welding of steels underwater in hyperbaric
wet environment. The recommended format for the certificate of approval testing is given in Annex A.
During the approval test the diver-welder should be required to show adequate practical experience and job
knowledge (test non mandatory) of the welding processes, materials and safety requirements for which he is to be
approved, information on these aspects is given in Annex B.
This standard is applicable when the diver-welder's testing is required by the purchaser, by inspection authorities or
by other organisations.
The welding processes referred to in this standard include those fusion welding processes which are designated as
manual or partly mechanised welding. It does not cover fully mechanised and fully automatic processes (see 5.2).
All new approvals should be in accordance with this standard from the date of this issue.
However, this standard does not invalidate previous diver-welder approvals made to former national standards or
specifications, providing the intent of the technical requirements is satisfied and the previous approvals are relevant
to the application and production work on which they are employed.
Also, where additional tests should be carried out to make the approval technically equivalent it is only necessary
to do the additional tests on a test piece which should be made in accordance with this standard. Consideration of
previous approvals to national standards or specifications should be at the time of the enquiry/contract stage and
agreed between the contracting parties.
The certificate of approval testing is issued under the sole responsibility of the examiner or examining body.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 288-1
Specification and approval of welding procedures for metallic materials – Part 1: General rules for fusion welding
EN 288-2
Specification and approval of welding procedures for metallic materials – Part 2: Welding procedure specification
for arc welding
EN 499
Welding consumables – Covered electrodes for manual metal arc welding of non alloy and fine grain steels –
Classification
4
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
EN 571-1
Non destructive testing – Penetrant testing – Part 1: General principles
EN 910
Destructive tests on welds in metallic materials – Bend tests
EN 970
Non-destructive examination of fusion welds – Visual examination
EN 1290
Non-destructive examination of welds – Magnetic particles examination of welds
EN 1320
Destructive tests on welds in metallic materials – Fracture test
EN 1321
Destructive tests on welds in metallic materials – Macroscopic and microscopic examination of welds
EN 1435
Non-destructive examination of welds – Radiographic examination of welded joints
EN 1714
Non destructive examination of welds – Ultrasonic examination of welded joints
EN ISO 4063
Welding and allied processes – Nomenclature of processes and reference numbers (ISO 4063:1998)
prEN ISO 5817
Welding – Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) – Quality levels
for imperfections (ISO/DIS 5817:2000)
EN ISO 6520-1
Welding and allied processes – Classification of geometric imperfections in metallic materials – Part 1: Fusion
welding (ISO 6520:1998)
EN ISO 6947
Welds – Working positions – Definitions of angles of slope and rotation (ISO 6947:1993)
CR ISO 15608
Welding – Guidelines for a metallic material grouping system (ISO/TR 15608:2000)
ISO 857-1
Welding and allied processes – Vocabulary – Part 1: Metal welding processes
5
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
3 Terms and definitions
For the purposes of this standard, the following terms and definitions and the definitions in EN 288-1 apply.
3.1
diver-welder
a person who performs the welding under hyperbaric conditions
3.2
hyperbaric wet welding
the process of welding in a hyperbaric wet environment at an elevated pressure with no mechanical barrier around
the arc and with the diver-welder working directly in the water
4 Symbols and abbreviations
4.1 General
Where the full wording is not used, the following symbols and abbreviations shall be used when completing the test
certificate (see annex A).
4.2 Test piece
a nominal throat thickness
BW butt weld
D outside diameter of the smaller pipe
FW fillet weld
Pplate
t plate or pipe wall thickness
Tpipe
z leg length of fillet weld
4.3 Consumable
R rutile covering
RR rutile thick covering
RB rutile basic covering
fc flux cored
mc metal cored
4.4 Miscellaneous
bs welding from both sides
gg back gouging or back grinding of welds
mb welding with backing material
ss single-side welding
wd water depth
sa salt water
fr fresh water
5 Essential variables for approval testing
5.1 General
The criteria specified in this clause shall be examined in order to identify the ability of the diver-welder in these
areas. Each criterion is considered to be a significant factor in the approval testing.
The diver-welder approval test shall be carried out on test pieces and is independent of the type of construction.
5.2 Welding processes
Welding processes are defined in ISO 857-1 and reference numbers of welding processes for symbolic representa-
tion are listed in EN ISO 4063.
This standard covers the following welding processes applicable in hyperbaric wet environment.
6
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
111 manual metal arc welding (metal arc welding with covered electrode);
114 self-shielded tubular-cored arc welding;
136 tubular cored metal arc welding with active gas shield;
137 tubular cored metal arc welding with inert gas shield.
Other fusion welding processes by agreement.
5.3 Joint types (butt and fillet welds)
1
Test pieces shall be produced for butt weld (BW) and fillet weld (FW) in plates (P) or pipes ) (T) for approval tests
in accordance with 7.3.
5.4 Material groups
The designation of steel groups of material as defined in CR ISO 15608 shall apply.
This standard applies to the following material groups according to CR ISO 15608: 1 and 8.
In general, diver-welder's approval test shall involve depositing weld metal having a chemical composition compatible
with any of the steels in the parent metal group(s).
When the filler metal is dissimilar to the parent metal group, an approval for that combination of parent metal group
and filler metal is needed.
5.5 Consumables
5.5.1 General
It is assumed that in most approval tests the filler metal will be similar to the parent metal. When a diver-welder's
test has been carried out using a filler metal, shielding gas or flux suitable for a certain material group, this test will
only confer approval on the diver-welder to use those consumables (filler metal, shielding gas or flux) for other
materials from the same material group.
5.5.2 Metal-arc welding with covered electrodes
Covered electrode groups are classified with respect to the most important characteristics according to EN 499 as
given in 4.3. In the case of hyperbaric wet welding only three of these classifications are applicable. These are
– R rutile covering;
– RR rutile thick covering;
– RB rutile basic covering.
NOTE The covered electrodes for wet application are specially designed electrodes with an additional water
protective coating adjusted according to the composition of the alloying elements of the core wire and the flux.
For flux cored arc welding in wet environment special designed wire electrodes are applied. These are of the
seamless or the folded type. The internal flux is covered and protected against excessive moisture penetration
by the surrounding metal.
5.6 Dimensions
The diver-welder approval test shall be based on the thickness of the material (i.e. plate thickness or wall thickness
of pipe) and pipe diameters which the diver-welder will use in production. A range of approval is listed for each of
the ranges of plate thickness and pipe wall thickness or pipe diameter as specified in tables 1 and 2.
It is not intended that thicknesses or diameters should be measured precisely but rather the general philosophy
behind the values given in tables 1 and 2 should be applied.
1
) The word "pipe", alone or in combination, is used to mean "pipe", "tube" or "hollow section".
7
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Table 1 - Test piece thickness (plate or pipe) and range of approval
Test piece thickness t
Range of approval
mm
t £ 6‡ t (max. 6 mm)
t > 6 0,5 t to 2 t (min. 6 mm)
Table 2 - Test piece diameter and range of approval
a
Test piece diameter D
Range of approval
mm
D £ 100 0,7 D to 2 D
100 < D £ 300 0,5 D to 2 D (min. 75 mm)
D > 300 > 0,5 D
a
For structural hollow sections "D" is the dimension of the
smallest side.
5.7 Welding positions
The welding positions shall be taken from EN ISO 6947.
The positions PF and H-L045 are exclusively used for process 114, 136 and 137 (see table 4).
5.8 Hyperbaric environment
The diver-welder approval test shall be carried out under actual or simulated hyperbaric conditions, taking into
account:
– diving depth;
– visibility;
– water temperature;
– salinity.
6 Range of approval
6.1 General
As a general rule, the test piece approves the diver-welder not only for the conditions used in the test, but also for
all joints which are considered easier to weld. The range of approval for each type of test is given in the relevant
subclauses and tables. In these tables the range of approval is indicated in the same horizontal line.
6.2 Welding process
Each test approves one welding process. A change of welding process requires a new approval test. However, it is
possible for a diver-welder to be approved for more than one welding process by a single test or by several approval
tests to be used to cover a multi-process joint.
6.3 Joint types
Depending on the test piece, the range of welds for which the diver-welder is approved is shown in table 3; the
following additional criteria are applicable:
a) approval for welds in plates in all relevant positions covers welds on pipes having an outside diameter
‡ 600 mm;
b) in cases where the production work is predominantly fillet welding, it is recommended that the diver-welder
should be approved also by an appropriate fillet welding test, i.e. on plate, pipe or branch connection;
c) approval of welding from both sides without gouging covers welds from one side with backing and welds from
both sides with gouging;
d) in cases where the production work is either predominantly branch welding or involves a complex branch
connection, it is recommended that the diver-welder should receive special training. In some cases a diver-welder
approval test on a branch connection including any restricted access may be necessary.
8
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Table 3 - Range of approval for tests (Details of weld type)
Range of approval
Butt welds Lap welds Fillet welds
welded from welded from
one side both sides
Details of weld type
(ss) (bs)
with
with backing
gouging plate pipe plate pipe
(mb)
(gg)
welded with
a a
from one backing x x x x x x
side (ss) (mb)
Butt welds
welded with
a a
from both gouging x x x x x x
sides (bs) (gg)
Lap welds
a a
plate – – x x x x
pipe – – x x x x
plate
a
Fillet
– – – – x x
welds
pipe
– – – – x x
a
See 6.3 a)
Key
x indicates those welds for which the welder is approved
– indicates for what the diver welder is not approved
6.4 Material groups
According to the material group of the test piece, specified in 5.4, the diver-welder is only approved for this special
material group. For any steel not covered the diver-welder shall carry out an approval test, which only approves for
that steel.
6.5 Consumables
It is not permitted to:
– change the standard or commercial designation of the electrodes and waterprotective coating;
– add or omit the waterprotective coating;
– change the nominal electrode diameter;
– change the nominal composition of the shielding gas.
6.6 Dimensions
The range of approval according to plate thickness or wall thickness of pipe and/or pipe diameter is shown in
tables 1 and 2.
6.7 Welding positions
The range of approval for each welding position is given in table 4. The welding positions and codes refer to
9
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
EN ISO 6947.
Table 4 - Range of approval according to welding position
Range of approval
Plate Pipe
Welding position of Butt welds Fillet welds Lap welds Fillet welds
test piece
PA PC PG PF PE PA PB PG PF PD PB PD PG PF H-L045 J-L045 PB PG PF PD
c c a c c a,b a c a,d
PA x – – – – x x – – – – – – – – – x – – –
PC x x – – – x x – – – – – – – – – x – – –
Butt
PG – – x – – – – x – – – – – – – – – x – –
welds
c
PF x – – x – x x – x – – – – – – – x – x –
P
L
PE x x – – x x x – – x – – – – – – x – – x
A
T
PA – – – – – x – – – – – – – – – – – – – –
E
S
PB – – – – – x x – – – – – – – – – x – – –
Fillet
PG – – – – – – – x – – – – – – – – – x – –
welds
c
PF – – – – – x x – x – – – – – – – x – – –
d
PD – – – – – x x – – x – – – – – – x – – x
PB – – – – – x x – – – x – – – – – x – – –
PD – – – – – x x – – x x x – – – – x – – x
a
PG – – – – – – – x – – – – x – – – – x – –
Lap
welds 3
PF – – – – – x x – x – x – – x – – x – x –
P
c
H-L045 – – – – – x x – x x x x – x x – x – x x
I
P
E J-L045 – – – – – x x x – x x x x – – x x x – x
S
a,b
PB – – – – – x x – – – – – – – – – x – – –
a
PG – – – – – – – x – – – – – – – – – x – –
Fillet
welds c
PF – – – – – x x – x – – – – – – – x – x –
a,d
PD – – – – – x x – – x – – – – – – x – – x
a
for pipes welded in: pipe fixed; axis horizontal; weld: vertical
b
for pipes welded in: pipe fixed; axis vertical; weld: horizontal
c
see to 5.7
d
This is an approved position and which is covered by the other related test.
Key
x indicates those welding positions for which the diver-welder is approved
– indicates those welding positions for which the diver-welder is not approved
6.8 Hyperbaric environment
The diver-welder approval test shall be carried out under actual or simulated hyperbaric conditions at the appropriate
water depth.
The range of approval for water depth is given in table 5.
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Table 5 - Range of approval according to water depth
Depth of welding Range of approval
Type of welding
for test piece wd
Wet welding of parent wd < 20 m 0 m up to 20 m
metal suitable for mild 20 m £ wd < 50 m 10 m up to wd + 20 m
steel filler metal 50 m £ wd < 100 m 0,85 wd up to 1,10 wd
Wet welding of parent
metal suitable for
wd 0,90 wd up to wd + 3 m
austenitic stainless filler
metal
Wet welding of parent
metal suitable for wd 0,90 wd up to wd + 10 m
other filler metals
NOTE 1 For the maximum depth approved, depth shall be measured from the lower
extremity of the test weldment with a tolerance of plus or minus 250 mm.
NOTE 2 For the minimum depth approved, depth shall be measured from the upper
extremity of test weldment with a tolerance of plus or minus 250 mm.
7 Examination and testing
7.1 General
Only approved commercial diver can participate in the examinations and tests.
7.2 Supervision
The welding and testing of test pieces shall be witnessed by an examiner or examining body.
The test pieces shall be marked with the identification of the examiner and the diver-welder before welding starts.
The examiner or examining body may stop the test if the welding conditions are not correct or if it appears that the
diver-welder does not have the technical competence to achieve the required standard, e.g. where there are
excessive and/or systematic repairs.
7.3 Shapes and dimensions of test pieces
The shape and dimensions of test pieces (see 5.6) are shown in figures 1 to 6.
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Dimensions in millimetres
Key
1 Backing bar or preparation in accordance with table 3
Figure 1 - Dimensions of test piece for a butt weld in plate
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Dimensions in millimetres
for t ‡ 6 mm, a £ 0,5 t
for t < 6 mm, 0,5 t £ a £ t
(z » 0,7 t)
a
Stop and restart at the centre
Figure 2 - Dimensions of test piece for fillet weld(s) on plate (T-joint)
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Dimensions in millimetres
Key
1 Shop weld
Figure 3 - Dimensions of test piece for fillet weld transverse from plate (lap joint)
Dimensions in millimetres
Key
1 Shop weld
Figure 4 - Dimensions of test piece for fillet weld longitudinal from plate (lap joint)
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
Dimensions in millimetres
Key
1 Shop weld
a
The outside diameter of the smaller pipe may be machined for joint fit up.
Figure 5 - Dimensions of test piece for fillet weld transverse from pipe (lap joint)
Dimensions in millimetres
t corresponds to the thinner part
for t ‡ 6 mm, a £ 0,5 t
for t < 6 mm, 0,5 t £ a £ t
(z » 0,7 t)
l = D + 150 mm min.
1
Figure 6 - Dimensions of test piece for fillet weld in pipe
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SIST EN ISO 15618-1:2003
EN ISO 15618-1:2001 (E)
7.4 Welding conditions
The approval test for the diver-welder shall correspond to the conditions used in production and follow a WPS or
pWPS prepared in accordance with EN 288-2.
The following conditions shall apply:
a) the welding equipment shall be equivalent to that used in production;
b) the test piece shall have at least one stop and one re-start in the root run and in the top capping run and
be identified in the inspection length to be examined (see figure 2);
c) any controlled heat input required in the WPS or pWPS is mandatory for the diver-welder's test piece;
d) identification of the test piece;
e) the diver-welder shall be allowed to remove minor imperfections, except on the surface layer, by grinding,
gouging or any other method used in production. The approval of the examiner or examining body shall be
obtained;
f) the test shall be carried out under actual or simulated hyperbaric conditions in the range of water depth
specified in 6.8;
g) only covered electrodes with a diameter of approximately 3,25 mm or flux cored electrodes designed for
wet application shall be used.
7.5 Test methods
Each completed weld shall be examined visually according to EN 970 in the as welded condition. When required
(see table 6), visual examination can be supplemented by magnetic particle (EN 1290), penetrant (EN 571-1) or
other test methods, and macroscopic examination (EN 1321) on butt welds. If accepted by visual inspection,
additional testing shall be performed as specified in table 6. The macroscopic specimen shall be prepared and
etched on one side to clearly reveal the weld.
Prior to mechanical testing, backing strips, where used, shall be removed. The test piece can be sectioned by
thermal cutting or by mechanical means discarding the first and last 25 mm of the test piece at the end of the
plates (see figures 7 and 8).
Table 6 - Test methods
Test method Butt weld plate Lap weld in pipe or plate Fillet weld
Visual examination mandatory mandatory mandatory
Radiographic
a,d a,d
mandatory mandatory not mandatory
examination
Bend test mandatory not mandatory not mandatory
a,c a,c
Fracture test mandatory mandatory mandatory
Macroscopic
b
mandatory mandatory not mandatory
examination
a
Radiographic examination or fracture test shall be used, but not both.
b
The fracture test may be replaced by macroscopic examination of at least four sections.
c
The minimum thickness of a test piece for fracture test sh
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